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Chapter 36

Voltage Reference (VREFV1)

36.1 Introduction

NOTE

For the chip-specific implementation details of this module's
instances, see the chip configuration information.

The Voltage Reference(VREF) is intended to supply an accurate voltage output that can
be trimmed in 0.5 mV steps. The VREF can be used in applications to provide a reference
voltage to external devices or used internally as a reference to analog peripherals such as
the ADC, DAC, or CMP. The voltage reference has three operating modes that provide
different levels of supply rejection and power consumption..

The following figure is a block diagram of the Voltage Reference.

K22F Sub-Family Reference Manual , Rev. 3, 7/2014

Freescale Semiconductor, Inc.

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Summary of Contents for MK22FN256VDC12

Page 1: ...K22F Sub Family Reference Manual Supports MK22FN256VDC12 MK22FN256VLL12 MK22FN256VMP12 MK22FN256VLH12 Document Number K22P121M120SF8RM Rev 3 7 2014...

Page 2: ...K22F Sub Family Reference Manual Rev 3 7 2014 2 Freescale Semiconductor Inc...

Page 3: ...Module Functional Categories 49 2 2 1 ARM Cortex M4 Core Modules 50 2 2 2 System Modules 51 2 2 3 Memories and Memory Interfaces 52 2 2 4 Clocks 52 2 2 5 Security and Integrity modules 52 2 2 6 Analog...

Page 4: ...SMC Configuration 68 3 3 3 PMC Configuration 68 3 3 4 Low Leakage Wake up Unit LLWU Configuration 69 3 3 5 MCM Configuration 71 3 3 6 Crossbar Light Switch Configuration 71 3 3 7 Peripheral Bridge Con...

Page 5: ...Controller Configuration 87 3 5 3 SRAM Configuration 87 3 5 4 System Register File Configuration 89 3 5 5 VBAT Register File Configuration 90 3 5 6 EzPort Configuration 90 3 6 Security 91 3 6 1 CRC C...

Page 6: ...Universal Serial Bus USB FS Subsystem 118 3 9 2 SPI configuration 123 3 9 3 I2C Configuration 127 3 9 4 UART Configuration 128 3 9 5 LPUART configuration 130 3 9 6 I2S configuration 131 3 10 Human ma...

Page 7: ...8 5 4 1 Device clock summary 149 5 5 Internal clocking requirements 152 5 5 1 Clock divider values after reset 153 5 5 2 VLPR mode clocking 153 5 6 Clock Gating 154 5 7 Module clocks 154 5 7 1 PMC 1 k...

Page 8: ...t sequence 175 Chapter 7 Power Management 7 1 Introduction 177 7 2 Clocking modes 177 7 2 1 Partial Stop 177 7 2 2 DMA Wakeup 178 7 2 3 Compute Operation 179 7 2 4 Peripheral Doze 180 7 2 5 Clock Gati...

Page 9: ...uence 196 9 2 2 JTAG to cJTAG change sequence 196 9 3 Debug Port Pin Descriptions 197 9 4 System TAP connection 197 9 4 1 IR Codes 197 9 5 JTAG status and control registers 198 9 5 1 MDM AP Control Re...

Page 10: ...4 1 Core Modules 218 10 4 2 System Modules 219 10 4 3 Clock Modules 219 10 4 4 Memories and Memory Interfaces 220 10 4 5 Analog 220 10 4 6 Timer Modules 221 10 4 7 Communication Interfaces 223 10 4 8...

Page 11: ...register definition 248 12 2 1 System Options Register 1 SIM_SOPT1 249 12 2 2 SOPT1 Configuration Register SIM_SOPT1CFG 251 12 2 3 System Options Register 2 SIM_SOPT2 252 12 2 4 System Options Registe...

Page 12: ...oader 13 1 Chip Specific Information 279 13 2 Introduction 279 13 3 Functional Description 281 13 3 1 Memory Maps 281 13 3 2 Kinetis Flashloader 281 13 3 3 Start up Process 282 13 3 4 Clock Configurat...

Page 13: ...337 Chapter 15 System Mode Controller SMC 15 1 Introduction 339 15 2 Modes of operation 339 15 3 Memory map and register descriptions 341 15 3 1 Power Mode Protection register SMC_PMPROT 342 15 3 2 P...

Page 14: ...LLWU 17 1 Introduction 369 17 1 1 Features 369 17 1 2 Modes of operation 370 17 1 3 Block diagram 371 17 2 LLWU signal descriptions 372 17 3 Memory map register definition 372 17 3 1 LLWU Pin Enable...

Page 15: ...MCM_PLACR 391 18 2 4 Interrupt Status and Control Register MCM_ISCR 392 18 2 5 Compute Operation Control Register MCM_CPO 395 18 3 Functional description 396 18 3 1 Interrupts 396 Chapter 19 Crossbar...

Page 16: ...with periodic triggering capability 409 21 4 2 DMA channels with no triggering capability 411 21 4 3 Always enabled DMA sources 411 21 5 Initialization application information 413 21 5 1 Reset 413 21...

Page 17: ...2 3 14 Error Register DMA_ERR 453 22 3 15 Hardware Request Status Register DMA_HRS 456 22 3 16 Enable Asynchronous Request in Stop Register DMA_EARS 459 22 3 17 Channel n Priority Register DMA_DCHPRIn...

Page 18: ...l Linking Disabled DMA_TCDn_BITER_ELINKNO 475 22 4 Functional description 476 22 4 1 eDMA basic data flow 476 22 4 2 Fault reporting and handling 479 22 4 3 Channel preemption 481 22 4 4 Performance 4...

Page 19: ...23 4 5 EWM Refresh Mechanism 509 23 4 6 EWM Interrupt 510 23 4 7 Counter clock prescaler 510 Chapter 24 Watchdog Timer WDOG 24 1 Introduction 511 24 2 Features 511 24 3 Functional overview 513 24 3 1...

Page 20: ...High WDOG_TMROUTH 526 24 7 10 Watchdog Timer Output Register Low WDOG_TMROUTL 526 24 7 11 Watchdog Reset Count register WDOG_RSTCNT 527 24 7 12 Watchdog Prescaler register WDOG_PRESC 527 24 8 Watchdo...

Page 21: ...ram 548 25 4 2 Low power bit usage 553 25 4 3 MCG Internal Reference Clocks 553 25 4 4 External Reference Clock 554 25 4 5 MCG Fixed Frequency Clock 554 25 4 6 MCG PLL clock 555 25 4 7 MCG Auto TRIM A...

Page 22: ...lator OSC32K 27 1 Introduction 581 27 1 1 Features and Modes 581 27 1 2 Block Diagram 581 27 2 RTC Signal Descriptions 582 27 2 1 EXTAL32 Oscillator Input 582 27 2 2 XTAL32 Oscillator Output 582 27 3...

Page 23: ...8 4 10 Cache Data Storage upper word FMC_DATAW1SnU 604 28 4 11 Cache Data Storage lower word FMC_DATAW1SnL 605 28 4 12 Cache Data Storage upper word FMC_DATAW2SnU 605 28 4 13 Cache Data Storage lower...

Page 24: ...d Writes 633 29 4 7 Read While Write RWW 634 29 4 8 Flash Program and Erase 634 29 4 9 Flash Command Operations 634 29 4 10 Margin Read Commands 638 29 4 11 Flash Command Description 639 29 4 12 Secur...

Page 25: ...egister CRC_CTRL 674 31 3 Functional description 675 31 3 1 CRC initialization reinitialization 675 31 3 2 CRC calculations 676 31 3 3 Transpose feature 677 31 3 4 CRC result complement 679 Chapter 32...

Page 26: ...ory map and register definitions 695 33 3 1 ADC Status and Control Registers 1 ADCx_SC1n 697 33 3 2 ADC Configuration Register 1 ADCx_CFG1 700 33 3 3 ADC Configuration Register 2 ADCx_CFG2 702 33 3 4...

Page 27: ...Minus Side General Calibration Value Register ADCx_CLM3 715 33 3 22 ADC Minus Side General Calibration Value Register ADCx_CLM2 716 33 3 23 ADC Minus Side General Calibration Value Register ADCx_CLM1...

Page 28: ...definitions 750 34 2 1 CMP Control Register 0 CMPx_CR0 750 34 2 2 CMP Control Register 1 CMPx_CR1 751 34 2 3 CMP Filter Period Register CMPx_FPR 753 34 2 4 CMP Status and Control Register CMPx_SCR 75...

Page 29: ...a High Register DACx_DATnH 776 35 4 3 DAC Status Register DACx_SR 777 35 4 4 DAC Control Register DACx_C0 778 35 4 5 DAC Control Register 1 DACx_C1 779 35 4 6 DAC Control Register 2 DACx_C2 780 35 5 F...

Page 30: ...7 1 4 DAC External Trigger Input Connections 797 37 1 5 Block diagram 797 37 1 6 Modes of operation 799 37 2 PDB signal descriptions 799 37 3 Memory map and register definition 799 37 3 1 Status and C...

Page 31: ...resolution 814 Chapter 38 FlexTimer Module FTM 38 1 Introduction 815 38 1 1 FlexTimer philosophy 815 38 1 2 Features 816 38 1 3 Modes of operation 817 38 1 4 Block diagram 818 38 2 FTM signal descript...

Page 32: ...FLTCTRL 855 38 3 21 Quadrature Decoder Control And Status FTMx_QDCTRL 858 38 3 22 Configuration FTMx_CONF 860 38 3 23 FTM Fault Input Polarity FTMx_FLTPOL 861 38 3 24 Synchronization Configuration FTM...

Page 33: ...21 Initialization trigger 924 38 4 22 Capture Test mode 926 38 4 23 DMA 927 38 4 24 Dual Edge Capture mode 928 38 4 25 Quadrature Decoder mode 935 38 4 26 BDM mode 940 38 4 27 Intermediate load 941 3...

Page 34: ...on information 957 39 6 Example configuration for chained timers 958 Chapter 40 Low Power Timer LPTMR 40 1 Introduction 961 40 1 1 Features 961 40 1 2 Modes of operation 961 40 2 LPTMR signal descript...

Page 35: ...er RTC_TPR 974 41 2 3 RTC Time Alarm Register RTC_TAR 974 41 2 4 RTC Time Compensation Register RTC_TCR 975 41 2 5 RTC Control Register RTC_CR 976 41 2 6 RTC Status Register RTC_SR 978 41 2 7 RTC Lock...

Page 36: ...er definitions 999 42 4 1 Peripheral ID register USBx_PERID 1001 42 4 2 Peripheral ID Complement register USBx_IDCOMP 1002 42 4 3 Peripheral Revision register USBx_REV 1002 42 4 4 Peripheral Additiona...

Page 37: ...register USBx_OBSERVE 1021 42 4 26 USB OTG Control register USBx_CONTROL 1021 42 4 27 USB Transceiver Control register 0 USBx_USBTRC0 1022 42 4 28 Frame Adjust Register USBx_USBFRMADJUST 1023 42 4 29...

Page 38: ...heral Chip Selects 1 3 1047 44 2 3 PCS4 Peripheral Chip Select 4 1047 44 2 4 PCS5 PCSS Peripheral Chip Select 5 Peripheral Chip Select Strobe 1047 44 2 5 SCK Serial Clock 1047 44 2 6 SIN Serial Input...

Page 39: ...78 44 4 5 Continuous Serial Communications Clock 1083 44 4 6 Slave Mode Operation Constraints 1084 44 4 7 Interrupts DMA requests 1085 44 4 8 Power saving features 1087 44 5 Initialization application...

Page 40: ...45 3 10 I2C Address Register 2 I2Cx_A2 1109 45 3 11 I2C SCL Low Timeout Register High I2Cx_SLTH 1109 45 3 12 I2C SCL Low Timeout Register Low I2Cx_SLTL 1110 45 4 Functional description 1110 45 4 1 I2...

Page 41: ...3 11 UART Control Register 4 UARTx_C4 1151 46 3 12 UART Control Register 5 UARTx_C5 1152 46 3 13 UART Extended Data Register UARTx_ED 1153 46 3 14 UART Modem Register UARTx_MODEM 1154 46 3 15 UART In...

Page 42: ...B UARTx_WP7816B_T0 1171 46 3 36 UART 7816 Wait Parameter Register B UARTx_WP7816B_T1 1171 46 3 37 UART 7816 Wait and Guard Parameter Register UARTx_WGP7816_T1 1172 46 3 38 UART 7816 Wait Parameter Reg...

Page 43: ...47 1 4 Block diagram 1219 47 2 Register definition 1220 47 2 1 LPUART Baud Rate Register LPUARTx_BAUD 1221 47 2 2 LPUART Status Register LPUARTx_STAT 1223 47 2 3 LPUART Control Register LPUARTx_CTRL 1...

Page 44: ...1264 48 3 7 SAI Transmit Data Register I2Sx_TDRn 1264 48 3 8 SAI Transmit FIFO Register I2Sx_TFRn 1265 48 3 9 SAI Transmit Mask Register I2Sx_TMR 1265 48 3 10 SAI Receive Control Register I2Sx_RCSR 12...

Page 45: ...49 2 Memory map and register definition 1291 49 2 1 Port Data Output Register GPIOx_PDOR 1293 49 2 2 Port Set Output Register GPIOx_PSOR 1294 49 2 3 Port Clear Output Register GPIOx_PCOR 1294 49 2 4 P...

Page 46: ...n register 1303 50 3 2 Bypass register 1303 50 3 3 Device identification register 1303 50 3 4 Boundary scan register 1304 50 4 Functional description 1305 50 4 1 JTAGC reset configuration 1305 50 4 2...

Page 47: ...y different numbering systems This suffix Identifies a b Binary number For example the binary equivalent of the number 5 is written 101b In some cases binary numbers are shown with the prefix 0b d Dec...

Page 48: ...by a colon represent either A subset of a register s named field For example REVNO 6 4 refers to bits 6 4 that are part of the COREREV field that occupies bits 6 0 of the REVNO register A continuous...

Page 49: ...ntegration module Power management and mode controllers Multiple power modes available based on high speed run run wait stop and power down modes Low leakage wakeup unit Miscellaneous control module C...

Page 50: ...the ARMv7 Architecture and Thumb 2 ISA and is upward compatible with the Cortex M3 Cortex M1 and Cortex M0 architectures Cortex M4 improvements include an ARMv7 Thumb 2 DSP ported from the ARMv7 A R p...

Page 51: ...VD trip points Low leakage wakeup unit LLWU The LLWU module allows the device to wake from low leakage power modes LLS and VLLS through various internal peripheral and external pin sources Miscellaneo...

Page 52: ...wing clock modules are available on this device Table 2 5 Clock modules Module Description Multi clock generator MCG The MCG provides several clock sources for the MCU that include Phase locked loop P...

Page 53: ...successive approximation ADC Analog comparators Compares two analog input voltages across the full range of the supply voltage 6 bit digital to analog converters DAC 64 tap resistor ladder network wh...

Page 54: ...insertion is available for each complementary pair Generation of hardware triggers Software control of PWM outputs Up to 4 fault inputs for global fault control Configurable channel polarity Programm...

Page 55: ...to communicate with a variety of serial devices such as standard codecs digital signal processors DSPs microprocessors peripherals and audio codecs that implement the inter IC sound bus I2S and the I...

Page 56: ...1 This part number is subject to removal Orderable part numbers K22F Sub Family Reference Manual Rev 3 7 2014 56 Freescale Semiconductor Inc...

Page 57: ...ific module to module interactions not necessarily discussed in the individual module chapters and links for more information 3 2 Core modules 3 2 1 ARM Cortex M4 Core Configuration This section summa...

Page 58: ...upts Nested Vectored Interrupt Controller NVIC NVIC Private Peripheral Bus PPB module Miscellaneous Control Module MCM MCM Private Peripheral Bus PPB module Single precision floating point unit FPU FP...

Page 59: ...e only available source of reference timing 3 2 1 3 Debug facilities This device has extensive debug capabilities including run control and tracing capabilities The standard ARM debug port that suppor...

Page 60: ...s 16 priority levels for interrupts Therefore in the NVIC each source in the IPR registers contains 4 bits For example IPR0 is shown below 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 1...

Page 61: ...e Debug Monitor 0x0000_0034 13 0x0000_0038 14 ARM core Pendable request for system service PendableSrvReq 0x0000_003C 15 ARM core System tick timer SysTick Non Core Vectors 0x0000_0040 16 0 0 0 DMA DM...

Page 62: ...LS recovery 0x0000_0098 38 22 0 5 WDOG or EWM Both watchdog modules share this interrupt 0x0000_009C 39 23 0 5 RNG Randon Number Generator 0x0000_00A0 40 24 0 6 I2C0 0x0000_00A4 41 25 0 6 I2C1 0x0000_...

Page 63: ...0110 68 52 1 13 PDB 0x0000_0114 69 53 1 13 USB OTG 0x0000_0118 70 54 1 13 0x0000_011C 71 55 1 13 0x0000_0120 72 56 1 14 DAC0 0x0000_0124 73 57 1 14 MCG 0x0000_0128 74 58 1 14 Low Power Timer 0x0000_01...

Page 64: ...NVIC s interrupt source number 2 Indicates the NVIC s ISER ICER ISPR ICPR and IABR register number used for this IRQ The equation to calculate this value is IRQ div 32 3 Indicates the NVIC s IPR regis...

Page 65: ...Power management Power management Nested Vectored Interrupt Controller NVIC NVIC Wake up requests AWIC wake up sources 3 2 3 1 Wake up sources The device uses the following internal and external inpu...

Page 66: ...an external bit clock or external master clock NMI Non maskable interrupt 3 2 4 FPU Configuration This section summarizes how the module has been configured in the chip For a comprehensive descriptio...

Page 67: ...g Port control Signal multiplexing 3 3 System modules 3 3 1 SIM Configuration This section summarizes how the module has been configured in the chip For a comprehensive description of the module itsel...

Page 68: ...d chapter Power Management Controller PMC Register access Peripheral bridge System Mode Controller SMC Resets Figure 3 7 System Mode Controller configuration Table 3 11 Reference links to related info...

Page 69: ...d in the chip For a comprehensive description of the module itself see the module s dedicated chapter Low Leakage Wake up Unit LLWU Power Management Controller PMC Peripheral bridge 0 Register access...

Page 70: ...P10 PTC6 LLWU_P10 pin LLWU_P11 PTC11 LLWU_P11 pin LLWU_P12 PTD0 LLWU_P12 pin LLWU_P13 PTD2 LLWU_P13 pin LLWU_P14 PTD4 LLWU_P14 pin LLWU_P15 PTD6 LLWU_P15 pin LLWU_M0IF LPTMR2 LLWU_M1IF CMP02 LLWU_M2IF...

Page 71: ...le Reference Full description Miscellaneous control module MCM MCM System memory map System memory map Clocking Clock distribution Power management Power management Transfers Private Peripheral Bus PP...

Page 72: ...Full description Crossbar switch Crossbar Switch System memory map System memory map Clocking Clock Distribution Crossbar switch master ARM Cortex M4 core ARM Cortex M4 core Crossbar switch master DMA...

Page 73: ...3 6 2 Crossbar Light Switch Slave Assignments The slaves connected to the crossbar switch are assigned as follows Slave module Slave port number Flash memory controller 0 SRAM controllers 1 2 Periphe...

Page 74: ...rossbar switch 3 3 7 1 Number of peripheral bridges This device contains one peripheral bridge 3 3 7 2 Memory maps The peripheral bridges are used to access the registers of most of the modules on thi...

Page 75: ...DMA request mux that allows up to 63 DMA request signals to be mapped to any of the 16 DMA channels Because of the mux there is not a hard correlation between any of the DMA request sources and a spec...

Page 76: ...l 0 21 FTM0 Channel 1 22 FTM0 Channel 2 23 FTM0 Channel 3 24 FTM0 Channel 4 25 FTM0 Channel 5 26 FTM0 Channel 6 27 FTM0 Channel 7 28 FTM1 Channel 0 29 FTM1 Channel 1 30 FTM2 Channel 0 31 FTM2 Channel...

Page 77: ...abled 62 DMA MUX Always enabled 63 DMA MUX Always enabled 1 Configuring a DMA channel to select source 0 or any of the reserved sources disables that DMA channel 3 3 8 2 DMA transfers via PIT trigger...

Page 78: ...map System memory map Register access Peripheral bridge AIPS Lite 0 AIPS Lite 0 Clocking Clock distribution Power management Power management Transfers Crossbar switch Crossbar switch 3 3 10 External...

Page 79: ...ent Power management Signal multiplexing Port Control Module Signal multiplexing 3 3 10 1 EWM clocks This table shows the EWM clocks and the corresponding chip clocks Table 3 22 EWM clock connections...

Page 80: ...ter WDOG Mode Controller Peripheral bridge 0 Register access Figure 3 15 Watchdog configuration Table 3 24 Reference links to related information Topic Related module Reference Full description Watchd...

Page 81: ...chip low power modes Table 3 26 WDOG low power modes Module mode Chip mode Wait Wait VLPW Stop Stop VLPS Power Down LLS VLLSx 3 4 Clock modules 3 4 1 MCG Configuration This section summarizes how the...

Page 82: ...referred to as the external reference clock and selection is determined by MCG_C7 OSCSEL bitfield The following table shows the chip specific clock assignments for this bitfield Table 3 28 MCG Oscill...

Page 83: ...memory map System memory map Clocking Clock distribution Power management Power management Signal multiplexing Port control Signal multiplexing Full description MCG MCG 3 4 2 1 OSC modes of operation...

Page 84: ...he chip For a comprehensive description of the module itself see the module s dedicated chapter Register access Flash memory Transfers Flash memory controller Peripheral bus controller 0 Figure 3 19 F...

Page 85: ...FF MK22FN256VLH12 256 0x0000_0000 0x0003_FFFF 1 This part number is subject to removal 3 5 1 3 Flash Memory Map The flash memory and the flash registers are located at different base addresses as show...

Page 86: ...en the EzPort is enabled EZP_CS asserted during reset Otherwise flash memory operates in NVM normal mode 3 5 1 7 Erase All Flash Contents An Erase All Flash Blocks operation can be launched by softwar...

Page 87: ...ontroller Flash memory controller System memory map System memory map Clocking Clock Distribution Transfers Flash memory Flash memory Transfers Crossbar switch Crossbar Switch Register access Peripher...

Page 88: ...n the memory map anchored at address 0x2000_0000 As such SRAM_L is anchored to 0x1FFF_FFFF and occupies the space before this ending address SRAM_U is anchored to 0x2000_0000 and occupies the space af...

Page 89: ...ripheral bridge 0 Register access Figure 3 23 System Register file configuration Table 3 34 Reference links to related information Topic Related module Reference Full description Register file Registe...

Page 90: ...emory map System memory map Clocking Clock distribution Power management Power management 3 5 5 1 VBAT register file This device includes a 32 byte register file that is powered in all power modes and...

Page 91: ...ort mode 3 5 6 2 Flash Option Register FOPT The FOPT EZPORT_DIS bit can be used to prevent entry into EzPort mode during reset If the FOPT EZPORT_DIS bit is cleared then the state of the chip select s...

Page 92: ...on Table 3 37 Reference links to related information Topic Related module Reference Full description CRC CRC System memory map System memory map Power management Power management 3 6 2 RNG Configurati...

Page 93: ...m memory map System memory map Clocking Clock distribution Power management Power management 3 7 Analog 3 7 1 16 bit SAR ADC Configuration This section summarizes how the module has been configured in...

Page 94: ...nnels The number of ADC channels present on the device is determined by the pinout of the specific device package For details regarding the number of ADC channel available on a particular package refe...

Page 95: ...d Reserved 001007 AD4b Reserved ADC0_SE4b 001017 AD5b Reserved ADC0_SE5b 001107 AD6b Reserved ADC0_SE6b 001117 AD7b Reserved ADC0_SE7b 01000 AD8 Reserved ADC0_SE88 01001 AD9 Reserved ADC0_SE99 01010 A...

Page 96: ...e voltage and not the VREF module 1 2 V reference voltage Prior to reading from this ADC channel ensure that you enable the bandgap buffer by setting the PMC_REGSC BGBE bit Refer to the device data sh...

Page 97: ...odule Disabled 1 Interleaved with ADC0_DP3 and ADC0_DM3 2 Interleaved with ADC0_DP3 3 Interleaved with ADC0_DP0 and ADC0_DM0 4 Interleaved with ADC0_DP0 5 ADCx_CFG2 MUXSEL bit selects between ADCx_SEn...

Page 98: ...the following configuration ADC0 AD8 AD9 ADC1 AD8 AD9 ADC0_SE8 ADC1_SE8 ADC0_SE9 ADC1_SE9 Figure 3 30 ADC hardware interleaved channels integration There are other pins on this device that have a simi...

Page 99: ...triggering the ADC is the PDB The PDB itself can be triggered by other peripherals For example RTC Alarm Seconds signal is connected to the PDB The PDB input trigger can receive the RTC alarm seconds...

Page 100: ...for this bitfield NOTE The ALTCLK option is only usable when OSCERCLK is in the MHz range A system with OSCERCLK in the kHz range has the optional clock source below minimum ADC clock operating frequ...

Page 101: ...ated chapter Signal multiplexing Module signals Register access CMP Peripheral bridge 0 Other peripherals Figure 3 31 CMP configuration Table 3 45 Reference links to related information Topic Related...

Page 102: ...st first enable the CMP and DAC prior to performing a CMP operation and capturing the output In this device control for this two staged sequencing is provided from the LPTMR The LPTMR provides a singl...

Page 103: ...configuration Table 3 47 Reference links to related information Topic Related module Reference Full description 12 bit DAC 12 bit DAC System memory map System memory map Clocking Clock distribution Po...

Page 104: ...chip For a comprehensive description of the module itself see the module s dedicated chapter Signal multiplexing Module signals Register access VREF Peripheral bus controller 0 Other peripherals Tran...

Page 105: ...guration This section summarizes how the module has been configured in the chip For a comprehensive description of the module itself see the module s dedicated chapter Signal multiplexing Module signa...

Page 106: ...0 Output 0101 PIT Ch 1 Output 0110 PIT Ch 2 Output 0111 PIT Ch 3 Output 1000 FTM0 initialization trigger and channel triggers as programmed in the FTM external trigger register EXTTRIG 1001 FTM1 init...

Page 107: ...acknowledgement input ADC1SC1B_COCO PDB channel 0 trigger pre trigger 1 acknowledgement input ADC0SC1A_COCO PDB channel 1 trigger pre trigger 0 acknowledgement input ADC0SC1B_COCO PDB channel 1 trigg...

Page 108: ...are connected to each CMP block and used for sample window 3 8 1 7 Pulse Out Enable Register Implementation The following table shows the comparison of pulse out enable register at the module and chip...

Page 109: ...se modules are configured Table 3 54 FTM Instantiations FTM instance Number of channels Features usage FTM0 8 3 phase motor 2 general purpose or stepper motor FTM1 21 Quadrature decoder or general pur...

Page 110: ...in or CMP1 output FTM0 FAULT2 FTM0_FLT2 pin FTM0 FAULT3 FTM0_FLT3 pin FTM1 FAULT0 FTM1_FLT0 pin or CMP0 output FTM1 FAULT1 CMP1 output FTM2 FAULT0 FTM2_FLT0 pin or CMP0 output FTM2 FAULT1 CMP1 output...

Page 111: ...e USB Interrupt Enable register INTEN SOFTOKEN to avoid USB enumeration conflicts 3 8 2 8 FTM Hall sensor support For 3 phase motor control sensor ed applications the use of Hall sensors generally 3 s...

Page 112: ...SRC that allow the user to select normal PWM Output Compare mode on the corresponding FTM timer channel or modulate with FTM1_CH1 The diagram below shows the implementation for FTM0 See SIM Block Guid...

Page 113: ...he PDB and ADC modules See PDB Instantiation and ADC triggers 3 8 2 11 FTM Global Time Base This chip provides the optional FTM global time base feature see Global time base GTB FTM0 provides the only...

Page 114: ...ode 3 8 3 PIT Configuration This section summarizes how the module has been configured in the chip For a comprehensive description of the module itself see the module s dedicated chapter Register acce...

Page 115: ...ter 3 8 4 Low power timer configuration This section summarizes how the module has been configured in the chip For a comprehensive description of the module itself see the module s dedicated chapter S...

Page 116: ...filter clock number Chip clock 00 0 MCGIRCLK internal reference clock not available in VLPS LLS VLLS modes 01 1 LPO 1 kHz clock not available in VLLS0 mode 10 2 ERCLK32K secondary external reference...

Page 117: ...odule Reference Full description RTC RTC System memory map System memory map Clocking Clock Distribution Power management Power management 3 8 5 1 RTC_CLKOUT signal When the RTC is enabled and the por...

Page 118: ...s See VBUS detect IRC48 with clock recovery block to eliminate the 48MHz crystal This is available for USB device mode only USB controller FS LS transceiver USB voltage regulator D D VREGIN VOUT33 Fig...

Page 119: ...ternal 5 V to 3 3 V USB regulator that powers the USB transceiver or the MCU depending on the application NOTE In the following examples VREGIN is used instead of VREG_IN0 Similarly VOUT33 is used ins...

Page 120: ...connected to VDD The USB regulator must be enabled by default to power the MCU When connected to a USB host the input source of this regulator is switched to the USB bus supply from the Li ion battery...

Page 121: ...mode 3 9 1 4 VBUS detect The USB FS controller does not include a dedicated VBUS detect pin However a GPIO pin with interrupt capability can be used to detect the presence of VBUS in device mode If a...

Page 122: ...l description USB controller USB controller System memory map System memory map Clocking Clock Distribution Transfers Crossbar switch Crossbar switch Signal Multiplexing Port control Signal Multiplexi...

Page 123: ...it is recommended that the USB regulator VREGIN and VOUT33 pins remain floating 3 9 2 SPI configuration This section summarizes how the module has been configured in the chip For a comprehensive descr...

Page 124: ...sters define different transfer attribute configurations The SPI module supports up to eight CTAR registers This device supports two CTARs on all instances of the SPI In master mode the CTAR registers...

Page 125: ...e SPI In VLPR and VLPW modes the max SPI_CLK frequency is 2MHz In stop and VLPS modes the clocks to the SPI module are disabled The module is not functional but it is powered so that it retains state...

Page 126: ...s Table 3 65 SPI clock connections Module clock Chip clock System Clock Bus Clock 3 9 2 11 Writing SPI Transmit FIFO The SPI supports 8 bit or 16 bit writes to the PUSH TX FIFO allowing a single write...

Page 127: ...Module signals 2 I C Figure 3 51 I2C configuration Table 3 66 Reference links to related information Topic Related module Reference Full description I2C I2C System memory map System memory map Clockin...

Page 128: ...ignal Multiplexing 3 9 4 1 UART configuration information This chip contains three UART modules This section describes how each module is configured on this device 1 Standard features of all UARTs RS...

Page 129: ...UART 2 Transmit data empty x x x Transmit complete x x x Idle line x x x Receive data full x x x LIN break detect x x x RxD pin active edge x x x Initial character detect x The error interrupt combin...

Page 130: ...related information Topic Related module Reference Full description LPUART0 LPUART System memory map System memory map Clocking Clock distribution Power management Power management Signal multiplexin...

Page 131: ...odule Reference Full description I2S I2S System memory map System memory map Clocking Clock Distribution Power management Power management Signal multiplexing Port control Signal Multiplexing 3 9 6 1...

Page 132: ...equests 3 9 6 2 4 I2S SAI clock generation Each SAI peripheral can control the input clock selection pin direction and divide ratio of one audio master clock The MCLK Input Clock Select bit of the MCL...

Page 133: ...alization of any of the I2S SAI registers 3 9 6 3 I2S SAI operation in low power modes 3 9 6 3 1 Stop and very low power modes In Stop mode the SAI transmitter and or receiver can continue operating p...

Page 134: ...Entry into stop mode is prevented not acknowledged while waiting for the transmitter and receiver to be disabled at the end of the current frame 3 10 Human machine interfaces 3 10 1 GPIO configuration...

Page 135: ...available on the devices covered by this document are detailed in Orderable part numbers Eight GPIO pins support a high drive capability PTB0 PTB1 PTD4 PTD5 PTD6 PTD7 PTC3 and PTC4 All other GPIO sup...

Page 136: ...Human machine interfaces K22F Sub Family Reference Manual Rev 3 7 2014 136 Freescale Semiconductor Inc...

Page 137: ...s There is an aliased region that maps a system address space to the Program flash section Flash region aliasing is specifically intended for references to read only data coefficients in the flash whi...

Page 138: ...Reserved 0x4200_0000 0x42FF_FFFF Aliased to peripheral bridge AIPS Lite bitband Cortex M4 core only 0x4300_0000 0x43FD_FFFF Reserved 0x43FE_0000 0x43FF_FFFF Aliased to general purpose input output GP...

Page 139: ...en to the alias region determines what value is written to the target bit Writing a value with bit 0 set writes a 1 to the target bit Writing a value with bit 0 clear writes a 0 to the target bit A 32...

Page 140: ...The unsecure state of user non secure aligns to no access control states set and the mid level state where user secure aligns to using the access control of execute only Control for this protection sc...

Page 141: ...tools An alternate IRC trim to the factory loaded trim can be stored at this location To override the factory trim user software must load new values into the MCG trim registers Non Volatile Byte Addr...

Page 142: ...these situations the application software must perform a read after write sequence to guarantee the required serialization of the memory operations 1 Write the peripheral register 2 Read the written...

Page 143: ...4001_3000 19 0x4001_4000 20 0x4001_5000 21 0x4001_6000 22 0x4001_7000 23 0x4001_8000 24 0x4001_9000 25 0x4001_A000 26 0x4001_B000 27 0x4001_C000 28 0x4001_D000 29 0x4001_E000 30 0x4001_F000 31 Flash m...

Page 144: ...0x4003_C000 60 0x4003_D000 61 Real time clock RTC 0x4003_E000 62 VBAT register file 0x4003_F000 63 DAC0 0x4004_0000 64 Low power timer LPTMR 0x4004_1000 65 System register file 0x4004_2000 66 0x4004_...

Page 145: ...4000 100 Multi purpose Clock Generator MCG 0x4006_5000 101 System oscillator OSC 0x4006_6000 102 I2C 0 0x4006_7000 103 I2C 1 0x4006_8000 104 0x4006_9000 105 0x4006_A000 106 UART 0 0x4006_B000 107 UART...

Page 146: ...p System 32 bit Address Range Resource 0xE000_0000 0xE000_0FFF Instrumentation Trace Macrocell ITM 0xE000_1000 0xE000_1FFF Data Watchpoint and Trace DWT 0xE000_2000 0xE000_2FFF Flash Patch and Breakpo...

Page 147: ...ssipation Various modules such as the USB OTG Controller have module specific clocks that can be generated from the IRC48MCLK or MCGPLLCLK or MCGFLLCLK clock In addition there are various other module...

Page 148: ...Clock options for some peripherals see note MCGFLLCLK MCGPLLCLK Note See subsequent sections for details on where these clocks are used PMC logic PMC LPO OSCCLK CG CG CG CG CG Clock gate RTC_CLKOUT C...

Page 149: ...bus and flash clock It is also an option for the debug trace clock MCGFLLCLK MCG output of the FLL MCGFLLCLK may clock some modules MCGPLLCLK MCG output of the PLL MCGFLLCLK or MCGPLLCLK may clock so...

Page 150: ...MCGOUTCLK clock divider In all stop modes and Compute Operation Bus clock Up to 60 MHz Up to 50 MHz Up to 4 MHz MCGOUTCLK clock divider In all stop modes except for partial STOP2 mode and Compute Ope...

Page 151: ...clocking is possible via SIM_SOPT1 OSC3 2KOUT to drive CLKOUT32K out in all low power modes CLKOUT32K 32 kHz 32 kHz 32 kHz ERCLK32K which is system OSC or LPO or RTC OSC depending on SIM_SOPT1 OSC3 2...

Page 152: ...RUN 80 MHz or slower in RUN 2 The bus clock frequency must be programmed to 60 MHz or less in HSRUN 50 MHz or less in RUN and an integer divide of the core clock The core clock to bus clock ratio is l...

Page 153: ...the user flexibility for a lower frequency low power boot option The flash erased state defaults to fast clocking mode since where the low power boot FTF_FOPT LPBOOT bit resides in flash is logic 1 in...

Page 154: ...e corresponding bit in SCGCx register to enable the clock Before turning off the clock make sure to disable the module Any bus access to a peripheral that has its clock disabled generates an error ter...

Page 155: ...k EZP_CLK Security CRC Bus clock RNGA Bus clock Analog ADC Bus clock OSCERCLK IRC48MCLK CMP Bus clock DAC Bus clock VREF Flash clock Timers PDB Bus clock FlexTimers Bus clock MCGFFCLK FTM_CLKINx PIT B...

Page 156: ...mode IRC48MCLK is forced disabled when the MCU transitions into VLPS LLSx and VLLSx low power modes NOTE IRC48MCLK is not forced disabled in Stop modes and should be disabled by software prior to Stop...

Page 157: ...the USB Host If the IRC48M clock is selected as the source of the PLL with MCG_C7 OSCSEL 10 then the clock frequency of the system clocks can shift as the USB device connects to the USB Host starting...

Page 158: ...figured to run from the 1 kHz LPO clock source PORTx_DFCR CS PORTx digital input filter clock Bus clock LPO Figure 5 4 PORTx digital input filter clock generation 5 7 6 LPTMR clocking The prescaler an...

Page 159: ...KOUT is disabled in LLSx and VLLSx modes CLKOUT32K controlled by SIM_SOPT1 OSC32KOUT can also be driven on the pins where the RTC_CLKOUT signal is an option overriding the existing pin mux configurati...

Page 160: ...RTC_CLKOUT and CLKOUT32K generation 5 7 8 USB FS OTG Controller clocking The USB FS OTG controller is a bus master attached to the crossbar switch As such it uses the system clock NOTE For the USB FS...

Page 161: ...ver function enabled 5 7 9 UART clocking UART0 and UART1 modules operate from the core system clock which provides higher performance level for these modules All other UART modules operate from the bu...

Page 162: ...ripheral can control the input clock selection pin direction and divide ratio of one audio master clock The I2S SAI transmitter and receiver support asynchronous bit clocks BCLKs that can be generated...

Page 163: ...I BCLK_OUT BCD BCLK I2Sx_MDR FRACT DIVIDE I2Sx_MCR MICS Clock Generation DIV I2Sx_TCR2 RCR2 SIM_SOPT2 PLLFLLSEL 01 00 MCGFLLCLK Direction Control Pad Interface Logic Fractional Clock Divider 11 IRC48M...

Page 164: ...Module clocks K22F Sub Family Reference Manual Rev 3 7 2014 164 Freescale Semiconductor Inc...

Page 165: ...nerator loss of lock LOL reset Stop mode acknowledge error SACKERR Software reset SW Lockup reset LOCKUP EzPort reset MDM DAP system reset Debug reset JTAG reset nTRST reset Each of the system reset s...

Page 166: ...start processing from a known set of initial conditions System reset begins with the on chip regulator in full regulation and system clocking generation from an internal reference When the processor e...

Page 167: ...ontinued filtering operation depending on the filtering mode selected When entering VLLS0 the RESET pin filter is disabled and bypassed The LPO filter has a fixed filter value of 3 Due to a synchroniz...

Page 168: ...age power modes The LLWU module is functional only in low leakage power modes In LLS mode only the RESET pin via the LLWU can generate a system reset In VLLSx modes all enabled inputs to the LLWU can...

Page 169: ...ledge the entry to stop mode if an error condition occurs The error can be caused by a failure of an external clock input to a module 6 2 2 8 Software reset SW The SYSRESETREQ bit in the NVIC applicat...

Page 170: ...stem reset This is the primary method for resets via the JTAG SWD interface The system reset is held until this bit is cleared Set the core hold reset bit in the MDM AP control register to hold the co...

Page 171: ...sources except a VLLS Wakeup that does not occur via the RESET_b pin It resets parts of the SMC LLWU and other modules that remain powered during VLLS mode The Chip Reset not VLLS reset also causes th...

Page 172: ...EXTEST HIGHZ and CLAMP instructions are active The reset source from the JTAG module is released when any other IR code is selected A JTAG reset causes the RCM s SRS1 JTAG bit to set 6 2 5 2 nTRST res...

Page 173: ...2 Boot options The device s functional mode is controlled by the state of the EzPort chip select EZP_CS pin during reset The device can be in single chip default or serial flash programming mode EzPo...

Page 174: ...speed on POR VLLSx and any system reset 0 Slower initialization The Flash initialization will be slower with the benefit of reduced average current during this time The duration of the recovery will...

Page 175: ...age as determined by the LVD The Mode Controller reset logic then controls a sequence to exit reset 1 A system reset is held on internal logic the RESET pin is driven out low and the MCG is enabled in...

Page 176: ...NMI input and the FOPT NMI_DIS field in the Flash Memory module If the NMI input is high or the NMI function is disabled in the NMI_DIS field the CPU begins execution at the PC location If the NMI inp...

Page 177: ...ode When configured for PSTOP2 only the core and system clocks are gated and the bus clock remains active The bus masters and bus slaves clocked by the system clock enter Stop mode but the bus slaves...

Page 178: ...ernal power switches enabling the clock generators in the MCG enabling the system and bus clocks but not the core clock and negating the stop mode signal to the bus masters and bus slaves The only dif...

Page 179: ...ynchronous DMA request 7 2 3 Compute Operation Compute Operation is an execution or compute only mode of operation that keeps the CPU enabled with full access to the SRAM and Flash read port but place...

Page 180: ...cates when entry has completed When exiting Compute Operation in Run mode the CPOACK status bit negates immediately When exiting Compute Operation in VLP Run mode the exit is delayed to allow the PMC...

Page 181: ...the corresponding bit in the SCGCx register to enable the clock Before turning off the clock make sure to disable the module For more details refer to the clock distribution and SIM chapters 7 3 Powe...

Page 182: ...is in a low power mode that supplies only enough power to run the chip at a reduced frequency Sleep Interrupt VLPS Very Low Power Stop via WFI Places chip in static state with LVD operation off Lowest...

Page 183: ...U and RTC can be used NVIC is disabled LLWU is used to wake up All of SRAM_U and SRAM_L are powered off The 32 byte system register file and 32 byte VBAT register file remain powered for customer crit...

Page 184: ...tware must re initialize the I O pins to their pre low power mode entry states before releasing the hold If the oscillator was configured to continue running during VLLSx modes it must be re configure...

Page 185: ...ted low power state All low power entry sequences are initiated by the core executing an WFI instruction The ARM core s outputs SLEEPDEEP and SLEEPING trigger entry to the various low power modes Syst...

Page 186: ...l register As part of this transition system clocking is re established and is equivalent to normal run VLPR mode clocking configuration 7 7 Flash Program Restrictions The flash memory on this device...

Page 187: ...ion Async operation static OFF Watchdog FF FF FF FF static OFF EWM FF static in CPO static static FF in PSTOP2 static static OFF Clocks 1kHz LPO ON ON ON ON ON ON in VLLS1 2 3 OFF in VLLS0 System osci...

Page 188: ...static wakeup on resume static wakeup on resume static wakeup on resume static wakeup on resume static OFF USB Voltage Regulator optional optional optional optional optional optional UART0 UART1 250...

Page 189: ...ALTCLK clocks only in CPO FF ADACK ALTCLK and ALTCLK2 clocks only FF in PSTOP2 ADACK and ALTCLK clocks only static OFF CMP9 FF HS or LS compare in CPO FF HS or LS compare FF in PSTOP2 HS or LS compare...

Page 190: ...ding EXTAL 7 System OSC and LPO clock sources are not available in VLLS0 Pulse counting is available in all modes 8 RTC_CLKOUT is not available CLKOUT32K can be configured as an alternate path of supp...

Page 191: ...security byte of the flash configuration field NOTE The security features apply only to external accesses via debug and EzPort CPU accesses to the flash are not affected by the status of FSEC In the...

Page 192: ...y is enabled The mass erase can be used to disable flash security but all of the flash contents are lost in the process A mass erase via the EzPort is allowed even when some memory locations are prote...

Page 193: ...nd other available resources Four debug interfaces are supported IEEE 1149 1 JTAG IEEE 1149 7 JTAG cJTAG Serial Wire Debug SWD ARM Real Time Trace Interface 1 pin asynchronous mode only The basic Cort...

Page 194: ...n Module Description SWJ DP cJTAG Modified Debug Port with support for SWD JTAG cJTAG AHB AP AHB Master Interface from JTAG to debug module and SOC system memory maps MDM AP Provides centralized contr...

Page 195: ...space Alternatively the six instruction comparators can individually configure the comparators to return a Breakpoint Instruction BKPT to the processor core on a match so providing hardware breakpoint...

Page 196: ...ug Port The debug port comes out of reset in standard JTAG mode and is switched into either cJTAG or SWD mode by the following sequences Once the mode has been changed unused debug pins can be reassig...

Page 197: ...ire Data Pull up JTAG_TCLK SWD_CLK I JTAG Test Clock I cJTAG Clock I Serial Wire Clock Pull down JTAG_TDI I JTAG Test Data Input Pull up JTAG_TDO TRACE_SWO O JTAG Test Data Output O Trace output over...

Page 198: ...G DP documentation for more information on these instructions Reserved 1 All other opcodes Decoded to select bypass register 1 The manufacturer reserves the right to change the decoding of reserved in...

Page 199: ...MDM AP SELECT 7 4 0x0 selects the bank with Status and Ctrl A 3 2 2 b00 selects the Status Register A 3 2 2 b01 selects the Control Register SELECT 7 4 0xF selects the bank with IDR A 3 2 2 b11 select...

Page 200: ...GREQ N Set to configure the system to be held in reset after the next recovery from a VLLSx mode This bit holds the in reset when VLLSx modes are exited to allow the debugger time to re initialize deb...

Page 201: ...control logic has started the mass erase operation When mass erase is disabled via MEEN and SEC settings an erase request due to seting of Flash Mass Erase in Progress bit is not acknowledged 1 Flash...

Page 202: ...bit is held until the debugger has had a chance to recognize that LLS was exited and is cleared by a write of 1 to the LLS VLLSx Status Acknowledge bit in MDM AP Control register 10 VLLSx Modes Exit T...

Page 203: ...HB AP supported sideband signal called HABORT This signal is driven into the Bus Matrix which resets the Bus Matrix state so that AHB AP can access the Private Peripheral Bus for last ditch debugging...

Page 204: ...routing to the TPIU This configuration enables the use of trace with low cost tools while maintaining the compatibility with trace probes 9 10 TPIU The TPIU acts as a bridge between the on chip trace...

Page 205: ...un to support core register access In these modes in which FCLK is left active the debug modules have access to core registers but not to system memory resources accessed via the crossbar With debug e...

Page 206: ...FF FF OFF static OFF ITM FF FF FF OFF static OFF TPIU FF FF FF OFF static OFF DWT FF FF FF OFF static OFF 9 13 Debug Security When security is enabled FSEC SEC 10 the debug port capabilities are limi...

Page 207: ...2 Signal Multiplexing Integration This section summarizes how the module is integrated into the device For a comprehensive description of the module itself see the module s dedicated chapter Register...

Page 208: ...Yes Yes Yes Yes Yes Pull enable at reset PTA0 PTA1 PTA2 PTA3 PTA4 Enabled Others Disabled Disabled Disabled Disabled Disabled Slew rate enable control Yes Yes Yes Yes Yes Slew rate enable at reset Di...

Page 209: ...ke sure to disable the module For more details refer to the clock distribution chapter 10 2 3 Signal multiplexing constraints 1 A given peripheral function must be assigned to a maximum of one package...

Page 210: ...B0_DM G1 12 7 E2 VOUT33 VOUT33 VOUT33 G2 13 8 D2 VREGIN VREGIN VREGIN H1 14 ADC0_DP1 ADC0_DP1 ADC0_DP1 H2 15 ADC0_DM1 ADC0_DM1 ADC0_DM1 J1 16 ADC1_DP1 ADC0_DP2 ADC1_DP1 ADC0_DP2 ADC1_DP1 ADC0_DP2 J2 1...

Page 211: ...JTAG_TMS SWD_DIO PTA3 UART0_ RTS_b FTM0_CH0 JTAG_TMS SWD_DIO J8 38 26 G5 PTA4 LLWU_P3 NMI_b EZP_CS_b PTA4 LLWU_P3 FTM0_CH1 NMI_b EZP_CS_b K7 39 27 F5 PTA5 DISABLED PTA5 USB_CLKIN FTM0_CH2 I2S0_TX_ BCL...

Page 212: ...TB16 SPI1_SOUT UART0_RX FTM_ CLKIN0 EWM_IN E9 63 40 D7 PTB17 DISABLED PTB17 SPI1_SIN UART0_TX FTM_ CLKIN1 EWM_OUT_ b D9 64 41 D6 PTB18 DISABLED PTB18 FTM2_CH0 I2S0_TX_ BCLK FTM2_QD_ PHA C9 65 42 C7 PT...

Page 213: ...SABLED PTC16 LPUART0_ RX C4 91 PTC17 DISABLED PTC17 LPUART0_ TX B4 92 PTC18 DISABLED PTC18 LPUART0_ RTS_b A4 PTC19 DISABLED PTC19 LPUART0_ CTS_b D4 93 57 C3 PTD0 LLWU_P12 DISABLED PTD0 LLWU_P12 SPI0_P...

Page 214: ...NC NC NC H3 NC NC NC J9 NC NC NC J4 NC NC NC A10 NC NC NC A9 NC NC NC B1 NC NC NC C2 NC NC NC 10 3 2 K22F Pinouts The following figure shows the pinout diagram for the devices supported by this docume...

Page 215: ...8 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 64 63 62 61 PTD7 PTD6 LLWU_P15 PTD5 PTD4 LLWU_P14 PTD3 PTD2 LLWU_P13 PTD1 PTD0 LLWU_P12 PTC11 LLWU_P11 PTC10 PTC9 PTC8 PTC7 PTC6 LLWU_P10 PTC5 LLWU_P9 PTC4...

Page 216: ...WU_P12 PTA0 VSS VSSA VREFL 3 XTAL32 4 PTD1 PTC10 VSS PTA1 VDD VDDA VREFH 4 EXTAL32 5 PTC11 LLWU_P11 PTC9 VDD PTA3 PTA2 PTA5 PTA4 LLWU_P3 5 VBAT 6 PTC8 PTC7 PTC1 LLWU_P6 PTB18 PTB16 PTB1 PTA13 LLWU_P4...

Page 217: ...0_DM3 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 99 79 78 77 76 PTD6 LLWU_P15 PTC7 PTC6 LLWU_P10 PTC5 LLWU_P9 PTC4 LLWU_P8 50 49 48 47 46 45 44 43 42 41 PTA18 VSS VDD PTA17 PTA16 PTA15 PTA14 PTA13 L...

Page 218: ...LKOUT32K PTA0 VBAT 6 VSS 7 PTC8 PTC7 PTC6 LLWU_P10 PTC5 LLWU_P9 VDD VSS VSS PTE4 LLWU_P2 PTA2 PTA5 7 RTC_ WAKEUP_B 8 PTC4 LLWU_P8 PTC3 LLWU_P7 PTC2 PTC1 LLWU_P6 PTB23 PTB22 PTB3 PTA1 PTA4 LLWU_P3 PTA1...

Page 219: ...G_TCLK SWD_CLK Serial Wire Clock I Table 10 5 TPIU Signal Descriptions Chip signal name Module signal name Description I O TRACE_SWO JTAG_TDO TRACE_SWO Trace output data from the ARM CoreSight debug b...

Page 220: ...O EZP_CLK EZP_CK EzPort Clock Input EZP_CS EZP_CS EzPort Chip Select Input EZP_DI EZP_D EzPort Serial Data In Input EZP_DO EZP_Q EzPort Serial Data Out Output 10 4 5 Analog Table 10 10 ADC 0 Signal D...

Page 221: ...e Module signal name Description I O CMP0_IN 5 0 IN 5 0 Analog voltage inputs I CMP0_OUT CMPO Comparator output O Table 10 13 CMP 1 Signal Descriptions Chip signal name Module signal name Description...

Page 222: ...ase B input Input pin associated with quadrature decoder phase B I Table 10 18 FTM 2 Signal Descriptions Chip signal name Module signal name Description I O FTM_CLKIN 1 0 EXTCLK External clock FTM ext...

Page 223: ...UT USB start of frame signal Can be used to make the USB start of frame available for external synchronization O Table 10 23 USB VREG Signal Descriptions Chip signal name Module signal name Descriptio...

Page 224: ...tem I O Table 10 27 I2C 1 Signal Descriptions Chip signal name Module signal name Description I O I2C1_SCL SCL Bidirectional serial clock line of the I2C system I O I2C1_SDA SDA Bidirectional serial d...

Page 225: ...generated I O I2S0_RX_FS SAI_RX_SYNC Receive Frame Sync The frame sync is an input sampled synchronously by the bit clock when externally generated and an output generated synchronously by the bit cl...

Page 226: ...tput I O PTC 31 0 1 PORTC31 PORTC0 General purpose input output I O PTD 31 0 1 PORTD31 PORTD0 General purpose input output I O PTE 31 0 1 PORTE31 PORTE0 General purpose input output I O 1 The availabl...

Page 227: ...its pin muxing state There is one instance of the PORT module for each port Not all pins within each port are implemented on a specific device 11 2 1 Features The PORT module has the following featur...

Page 228: ...output Individual mux control field supporting analog or pin disabled GPIO and up to six chip specific digital functions Pad configuration fields are functional in all digital pin muxing modes 11 2 2...

Page 229: ...face detailed signal description Signal I O Description PORTx 31 0 I O External interrupt State meaning Asserted pin is logic 1 Negated pin is logic 0 Timing Assertion may occur at any time and can as...

Page 230: ...5 1 236 4004_9044 Pin Control Register n PORTA_PCR17 32 R W See section 11 5 1 236 4004_9048 Pin Control Register n PORTA_PCR18 32 R W See section 11 5 1 236 4004_904C Pin Control Register n PORTA_PC...

Page 231: ...038 Pin Control Register n PORTB_PCR14 32 R W See section 11 5 1 236 4004_A03C Pin Control Register n PORTB_PCR15 32 R W See section 11 5 1 236 4004_A040 Pin Control Register n PORTB_PCR16 32 R W See...

Page 232: ...See section 11 5 1 236 4004_B030 Pin Control Register n PORTC_PCR12 32 R W See section 11 5 1 236 4004_B034 Pin Control Register n PORTC_PCR13 32 R W See section 11 5 1 236 4004_B038 Pin Control Regis...

Page 233: ...4 Pin Control Register n PORTD_PCR9 32 R W See section 11 5 1 236 4004_C028 Pin Control Register n PORTD_PCR10 32 R W See section 11 5 1 236 4004_C02C Pin Control Register n PORTD_PCR11 32 R W See sec...

Page 234: ...4004_D018 Pin Control Register n PORTE_PCR6 32 R W See section 11 5 1 236 4004_D01C Pin Control Register n PORTE_PCR7 32 R W See section 11 5 1 236 4004_D020 Pin Control Register n PORTE_PCR8 32 R W S...

Page 235: ...See section 11 5 1 236 4004_D07C Pin Control Register n PORTE_PCR31 32 R W See section 11 5 1 236 4004_D080 Global Pin Control Low Register PORTE_GPCLR 32 W always reads 0 0000_0000h 11 5 2 238 4004_D...

Page 236: ...ptions chapter for reset values per port DSE field Varies by port See the Signal Multiplexing and Signal Descriptions chapter for reset values per port PFE field Varies by port See Signal Multiplexing...

Page 237: ...falling edge 1011 Interrupt on either edge 1100 Interrupt when logic 1 Others Reserved 15 LK Lock Register 0 Pin Control Register fields 15 0 are not locked 1 Pin Control Register fields 15 0 are loc...

Page 238: ...n muxing modes 0 Fast slew rate is configured on the corresponding pin if the pin is configured as a digital output 1 Slow slew rate is configured on the corresponding pin if the pin is configured as...

Page 239: ...dress 84h offset Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 0 W GPWE GPWD Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PORTx...

Page 240: ...flag will be cleared automatically at the completion of the requested DMA transfer Otherwise the flag remains set until a logic 1 is written to the flag If the pin is configured for a level sensitive...

Page 241: ...7 26 25 24 23 22 21 20 19 18 17 16 R 0 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 CS W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PORTx_DFCR field descriptions Fi...

Page 242: ...ional description 11 6 1 Pin control Each port pin has a corresponding Pin Control register PORT_PCRn associated with it The upper half of the Pin Control register configures the pin s capability to e...

Page 243: ...ementing an external pull resistor will ensure a pin does not float when its input buffer is enabled note that the internal pull resistor is automatically disabled whenever the output buffer is enable...

Page 244: ...e interrupt status flag is set for any enabled DMA request in that port The DMA request negates after the DMA transfer is completed because that clears the interrupt status flags for all enabled DMA r...

Page 245: ...clock either the bus clock or the 1 kHz LPO clock If the synchronized input and the output of the digital filter remain different for a number of filter clock cycles equal to the filter width register...

Page 246: ...Functional description K22F Sub Family Reference Manual Rev 3 7 2014 246 Freescale Semiconductor Inc...

Page 247: ...isters 12 1 1 Features Features of the SIM include System clocking configuration System clock divide values Architectural clock gating control USB clock selection and divide values Flash and system RA...

Page 248: ...Device Identification Register SIM_SDID 32 R See section 12 2 8 262 4004_8034 System Clock Gating Control Register 4 SIM_SCGC4 32 R W F010_0030h 12 2 9 264 4004_8038 System Clock Gating Control Regist...

Page 249: ...during System Reset from Flash IFR x Undefined at reset SIM_SOPT1 field descriptions Field Description 31 USBREGEN USB voltage regulator enable Controls whether the USB voltage regulator is enabled 0...

Page 250: ...his field is reset only on POR LVD 00 System oscillator OSC32KCLK 01 Reserved 10 RTC 32 768kHz oscillator 11 LPO 1 kHz 17 16 OSC32KOUT 32K Oscillator Clock Output Outputs the ERCLK32K on the selected...

Page 251: ...ows the SOPT1 USBSSTBY bit to be written This register bit clears after a write to USBSSTBY 0 SOPT1 USBSSTBY cannot be written 1 SOPT1 USBSSTBY can be written 25 UVSWE USB voltage regulator VLP standb...

Page 252: ...04_7000h base 1004h offset 4004_8004h Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R 0 0 LPUARTSRC 0 0 0 USBSRC PLLFLLSEL W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5...

Page 253: ...h frequency clock for various peripheral clocking options 00 MCGFLLCLK clock 01 MCGPLLCLK clock 10 Reserved 11 IRC48 MHz clock 15 13 Reserved This field is reserved This read only field is reserved an...

Page 254: ...CLKSEL 0 FTM2CH1SRC FTM2CH0SRC FTM1CH0SRC 0 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 FTM2FLT0 0 FTM1FLT0 0 0 FTM0FLT1 FTM0FLT0 W Reset 0 0 0 0 0 0 0 0 0 0...

Page 255: ...1 FTM_CLK1 pin 24 FTM0CLKSEL FlexTimer 0 External Clock Pin Select Selects the external pin used to drive the clock to the FTM0 module NOTE The selected pin must also be configured for the FTM extern...

Page 256: ...ion through the appropriate pin control register in the port control module 0 FTM1_FLT0 pin 1 CMP0 out 3 Reserved This field is reserved This read only field is reserved and always has the value 0 2 R...

Page 257: ...Reserved This field is reserved This read only field is reserved and always has the value 0 15 8 Reserved This field is reserved This read only field is reserved and always has the value 0 7 6 UART1RX...

Page 258: ...7 6 5 4 3 2 1 0 R ADC1ALTTRGE N 0 ADC1PRETRGS EL ADC1TRGSEL ADC0ALTTRGE N 0 ADC0PRETRGS EL ADC0TRGSEL W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SIM_SOPT7 field descriptions Field Description 31 16 Rese...

Page 259: ...r timer LPTMR trigger 1111 Reserved 7 ADC0ALTTRGEN ADC0 alternate trigger enable Enable alternative conversion triggers for ADC0 0 PDB trigger selected for ADC0 1 Alternate trigger selected for ADC0 6...

Page 260: ...10 9 8 7 6 5 4 3 2 1 0 R 0 0 FTM2SYNCBIT FTM1SYNCBIT FTM0SYNCBIT W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SIM_SOPT8 field descriptions Field Description 31 24 Reserved This field is reserved This read...

Page 261: ...nel 1 output modulated by FTM1 channel 1 output 16 FTM0OCH0SRC FTM0 channel 0 output source 0 FTM0_CH0 pin is output of FTM0 channel 0 output 1 FTM0_CH0 pin is output of FTM0 channel 0 output modulate...

Page 262: ...7x Family 27 24 SUBFAMID Kinetis Sub Family ID Specifies the Kinetis sub family of the device 0000 Kx0 Subfamily 0001 Kx1 Subfamily tamper detect 0010 Kx2 Subfamily 0011 Kx3 Subfamily tamper detect 01...

Page 263: ...er 010 K3x Family or K1x K6x Family with tamper 011 K4x Family or K2x Family with tamper 100 K6x Family without tamper 101 K7x Family 110 Reserved 111 Reserved 3 0 PINID Pincount identification Specif...

Page 264: ...0 20 VREF VREF Clock Gate Control This bit controls the clock gate to the VREF module 0 Clock disabled 1 Clock enabled 19 CMP Comparator Clock Gate Control This bit controls the clock gate to the com...

Page 265: ...enabled 6 I2C0 I2C0 Clock Gate Control This bit controls the clock gate to the I 2 C0 module 0 Clock disabled 1 Clock enabled 5 4 Reserved This field is reserved This read only field is reserved and a...

Page 266: ...is reserved and always has the value 1 17 14 Reserved This field is reserved This read only field is reserved and always has the value 0 13 PORTE Port E Clock Gate Control This bit controls the clock...

Page 267: ...is reserved This read only field is reserved and always has the value 0 1 Reserved This field is reserved This read only field is reserved and always has the value 1 0 LPTMR Low Power Timer Access Con...

Page 268: ...s the clock gate to the ADC0 module 0 Clock disabled 1 Clock enabled 26 FTM2 FTM2 Clock Gate Control This bit controls the clock gate to the FTM2 module 0 Clock disabled 1 Clock enabled 25 FTM1 FTM1 C...

Page 269: ...ays has the value 0 13 SPI1 SPI1 Clock Gate Control This bit controls the clock gate to the SPI1 module 0 Clock disabled 1 Clock enabled 12 SPI0 SPI0 Clock Gate Control This bit controls the clock gat...

Page 270: ...orted while the flash memory is clock gated but entry into low power modes and HSRUN mode is blocked 0 Clock disabled 1 Clock enabled 12 2 12 System Clock Gating Control Register 7 SIM_SCGC7 Address 4...

Page 271: ...E The CLKDIV1 register cannot be written to when the device is in VLPR mode Address 4004_7000h base 1044h offset 4004_8044h Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7...

Page 272: ...de by 8 1000 Divide by 9 1001 Divide by 10 1010 Divide by 11 1011 Divide by 12 1100 Divide by 13 1101 Divide by 14 1110 Divide by 15 1111 Divide by 16 23 20 Reserved This field is reserved This read o...

Page 273: ...0 SIM_CLKDIV2 field descriptions Field Description 31 4 Reserved This field is reserved This read only field is reserved and always has the value 0 3 1 USBDIV USB clock divider divisor This field sets...

Page 274: ...IM_FCFG1 field descriptions Field Description 31 28 Reserved This field is reserved This read only field is reserved and always has the value 0 27 24 PFSIZE Program flash size This field specifies the...

Page 275: ...sabled for the duration of Wait mode An attempt by the DMA or other bus master to access the Flash when the Flash is disabled will result in a bus error This bit should be clear during VLP modes The F...

Page 276: ...example if MAXADDR0 0x20 the first invalid address of flash block 0 is 0x0004_0000 This would be the MAXADDR0 value for a device with 256 KB program flash in flash block 0 23 Reserved This field is r...

Page 277: ...Unique identification for the device 12 2 18 Unique Identification Register Mid High SIM_UIDMH Address 4004_7000h base 1058h offset 4004_8058h Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1...

Page 278: ...12 2 20 Unique Identification Register Low SIM_UIDL Address 4004_7000h base 1060h offset 4004_8060h Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R UID W Re...

Page 279: ...do not have an on chip ROM are shipped with the pre programmed Kinetis Flashloader in the on chip flash memory for one time in system factory programming The Kinetis Flashloader s main task is to load...

Page 280: ...peripherals Packet error detection and retransmission Fully supports flash security including ability to mass erase or unlock security via the backdoor key Protection of RAM used by the flashloader w...

Page 281: ...t the chip SetProperty Attempt to modify a writable property Supported 13 3 Functional Description The following sub sections describe the Kinetis Flashloader functionality 13 3 1 Memory Maps While ex...

Page 282: ...ed peripherals are initialized 3 The flashloader waits for communication to begin on a peripheral There is no timeout for the active peripheral detection process If communication is detected then all...

Page 283: ...s Was a Init UART1 SPI1 and I2C1 SPI1 entered interrupt state Has No activity detected on USB No Was Yes Figure 13 2 Kinetis Flashloader Start up Flowchart 13 3 4 Clock Configuration The Kinetis Flash...

Page 284: ...data phase is incoming from host to flashloader then it the data phase is part of the original command If the data phase is outgoing from flashloader to host then it the data phase is part of the res...

Page 285: ...al Response ACK Data packet ACK Process data Final data packet ACK Final Response ACK Process data Figure 13 4 Command with incoming data phase NOTE The host may not send any further packets while it...

Page 286: ...y sending a zero length data packet The final Generic Response packet sent after the data phase includes the status for the entire operation 13 3 5 3 Command with outgoing data phase The protocol for...

Page 287: ...the data phase is really considered part of the response command The host may not send any further packets while it the host is waiting for the response to a command If the ReadMemory Response command...

Page 288: ...get is packetized NOTE The term target refers to the Kinetis Flashloader device There are 6 types of packets used in device Ping packet Ping Response packet Framing packet Command packet Data packet R...

Page 289: ...ermine the baud rate before replying with the Ping Response packet Once the Ping Response packet is received by the host the connection is established and the host starts sending commands to the targe...

Page 290: ...tType 2 length_low Length is a 16 bit field that specifies the entire command or data packet size in bytes 3 length_high 4 crc16_low This is a 16 bit field The CRC16 value covers entire framing packet...

Page 291: ...mingPacketType_AckAbort Data phase is being aborted 0xA4 kFramingPacketType_Command The framing packet contains a command packet payload 0xA5 kFramingPacketType_Data The framing packet contains a data...

Page 292: ...command packet is 32 bytes long only 7 parameters can fit into the command packet Command packets are also used by the target to send responses back to the host As mentioned earlier command packets an...

Page 293: ...length 32 bits With the default maximum packet size of 32 bytes a command packet can contain up to 7 parameters 13 3 6 5 Data packet The data packet carries just the data either host sending data to t...

Page 294: ...The Command tag parameter identifies the response to the command sent by the host GetPropertyResponse The GetPropertyResponse packet is sent by the target in response to the host query that uses the...

Page 295: ...ckets shown in this section Please refer to the HID reports section for details of the USB HID packet structure 13 3 7 1 GetProperty command The GetProperty command is used to query the flashloader ab...

Page 296: ...Type_Command length 0x08 0x00 crc16 0x73 0xD4 Command packet commandTag 0x07 GetProperty flags 0x00 reserved 0x00 parameterCount 0x01 propertyTag 0x00000001 CurrentVersion The GetProperty command has...

Page 297: ...the values of the properties or options in the Kinetis Flashloader However the SetProperty command can only change the value of properties that are writable see Table 13 43 Properties used by Get SetP...

Page 298: ...cketType_Command length 0x0C 0x00 crc16 0x67 0x8D Command packet commandTag 0x0C SetProperty with property tag 10 flags 0x00 reserved 0x00 parameterCount 0x02 propertyTag 0x0000000A VerifyWrites prope...

Page 299: ...in the commandTag field of the command packet The FlashEraseAll command requires no parameters Process command Host Target FlashEraseAll 0x5a a4 04 00c4 2e 01 00 00 00 0x5a a4 0c 00 53 63 a0 00 04 02...

Page 300: ...Region command will fail and return kStatus_FlashAddressError 102 If any part of the region specified is protected the FlashEraseRegion command will fail and return kStatus_MemoryRangeInvalid 10200 Ta...

Page 301: ...ill with a byte pattern 8 bit the byte must be replicated 4 times in the pattern word To fill with a short pattern 16 bit the short value must be replicated 2 times in the pattern word For example to...

Page 302: ...us code 13 3 7 6 FlashProgramOnce command The FlashProgramOnce command writes data that is provided in a command packet to a specified range of bytes in the program once field Special care must be tak...

Page 303: ...th 0x10 0x00 crc16 0x7E4 0x89 Command packet commandTag 0x0E FlashProgramOnce flags 0 reserved 0 parameterCount 3 index 0x0000_0000 byteCount 0x0000_0004 data 0x1234_5678 Response upon successful exec...

Page 304: ...0 00 04 00 00 00 0x5a a4 10 00 3f 6f af 00 00 03 00 00 00 00 04 00 00 00 78 56 34 12 Figure 13 12 Protocol Sequence for FlashReadOnce Command Table 13 30 FlashReadOnce Command Packet Format Example Fl...

Page 305: ...e Field upon successful execution of the command or will return with a status code set to an appropriate error status code and a byte count set to 0 13 3 7 8 FlashReadResource command The FlashReadRes...

Page 306: ...00 06 5a a4 0c 00 75 a3 a0 00 00 02 00 00 00 00 10 00 00 00 Figure 13 13 Protocol Sequence for FlashReadResource Command Table 13 33 FlashReadResource Command Packet Format Example FlashReadResource...

Page 307: ...ied range of bytes in memory flash or RAM However if flash protection is enabled then writes to protected sectors will fail Special care must be taken when writing to flash First any flash sector writ...

Page 308: ...0c 00 27 1f a0 00ff 02 00 00 00 00 04 00 00 00 ACK 0x5a a1 ACK 0x5a a1 Data packet 0x5a a5 20 00 CRC16 32bytes data Process Data ACK 0x5a a1 Final Data packet 0x5a a5 length16 CRC16 32 bytes data ACK...

Page 309: ...return a GenericResponse packet with a status code set to kStatus_Success upon successful execution of the command or to an appropriate error status code 13 3 7 10 Read memory command The ReadMemory...

Page 310: ...eserved 0x00 parameterCount 0x02 startAddress 0x20000400 byteCount 0x00000064 Data Phase The ReadMemory command has a data phase Since the target Kinetis Flashloader works in slave mode the host need...

Page 311: ...command Table 13 39 Parameters for FlashSecurityDisable Command Byte Command 0 3 Backdoor key low word 4 7 Backdoor key high word Process command Host Target FlashSecureDisable with backdoor key 01020...

Page 312: ...the program counter to the code at the provided jump address R0 to the provided argument and a Stack pointer to the provided stack pointer address Prior to the jump the system is returned to the reset...

Page 313: ...at Example Reset Parameter Value Framing packet start byte 0x5A packetType 0xA4 kFramingPacketType_Command length 0x04 0x00 crc16 0x6F 0x46 Command packet commandTag 0x0B reset flags 0x00 reserved 0x0...

Page 314: ...loader Peripheral Pinmux Upon exit from the flashloader the flashloader leaves global interrupts disabled and restores the VTOR register to its default value 0x0 NOTE PORT clock gate pin mux and perip...

Page 315: ...n incoming packet is sent by the host with a selected I2C slave address and the direction bit is set as write An outgoing packet is read by the host with a selected I2C slave address and the direction...

Page 316: ...than supported length Yes payload data from target No Set payload length to maximum supported length No No Reached maximum Report a timeout Yes End No 2 bytes Read 1 byte from target 0x5A received 0xA...

Page 317: ...x00 will be sent as response to host if target is under the following conditions Processing incoming packet Preparing outgoing data Received invalid data The following flowcharts demonstrate how the h...

Page 318: ...out payload data from target No Set payload length to maximum supported length No No maximum Report a timeout error End Yes End No 2 bytes 0x5A received 0xA4 received Reached retries Send 0x00 to shi...

Page 319: ...uously with no delay between bytes in a fixed UART transmission mode 8 bit data no parity bit and 1 stop bit If the bytes of the ping packet are sent one by one with some delay between them the autoba...

Page 320: ...retries Figure 13 24 Host reads an ACK from target via UART Wait for ping response Yes Yes End Report Error No No Wait for 1 byte from target Wait for 1 byte from target 0x5A received 0xA7 received W...

Page 321: ...g packets instead the packetization inherent in the USB protocol itself is used The ability for the device to NAK Out transfers until they can be received provides the required flow control the built...

Page 322: ...d requests from the USB host 13 4 4 4 HID reports There are 4 HID reports defined and used by the flashloader USB HID peripheral The report ID determines the direction and type of packet sent in the r...

Page 323: ...e endian format and it is set to the size in bytes of the packet sent in the report This size does not include the Report ID or the Packet Length header itself During a data phase a packet size of 0 i...

Page 324: ...ontrols whether the flashloader will validate attempts to write to memory regions i e check if they are reserved before attempting to write ValidateRegions feature is enabled by default 0 No validatio...

Page 325: ...f the peripheral is available then the corresponding bit will be set in the property value All reserved bits must be set to 0 13 5 1 3 AvailableCommands Property This property value is a bitfield with...

Page 326: ...ss or length is outside addressable memory kStatus_ FlashAccessError 103 The FTFA_FSTAT ACCERR bit is set kStatus_FlashProtectionViolation 104 The FTFA_FSTAT FPVIOL bit is set kStatus_ FlashCommandFai...

Page 327: ...10200 Memory range conflicts with a protected region kStatus_UnknownProperty 10300 The requested property value is undefined kStatus_ReadOnlyProperty 10301 The requested property value cannot be writ...

Page 328: ...Kinetis Flashloader Status Error Codes K22F Sub Family Reference Manual Rev 3 7 2014 328 Freescale Semiconductor Inc...

Page 329: ...provide reset status information and reset filter control NOTE The RCM registers can be written only in supervisor mode Write accesses in user mode are blocked and will result in a bus error RCM memor...

Page 330: ...1 Other reset a bit is set if its corresponding reset source caused the reset Address 4007_F000h base 0h offset 4007_F000h Bit 7 6 5 4 3 2 1 0 Read POR PIN WDOG 0 LOL LOC LVD WAKEUP Write Reset 1 0 0...

Page 331: ...1 Reset caused by a loss of external clock 1 LVD Low Voltage Detect Reset If PMC_LVDSC1 LVDRE is set and the supply drops below the LVD trip voltage an LVD reset occurs This field is also set by POR...

Page 332: ...ESET command while the device is in EzPort mode 0 Reset not caused by EzPort receiving the RESET command while the device is in EzPort mode 1 Reset caused by EzPort receiving the RESET command while t...

Page 333: ...0 0 RCM_RPFC field descriptions Field Description 7 3 Reserved This field is reserved This read only field is reserved and always has the value 0 2 RSTFLTSS Reset Pin Filter Select in Stop Mode Select...

Page 334: ...ilter count is 5 00101 Bus clock filter count is 6 00110 Bus clock filter count is 7 00111 Bus clock filter count is 8 01000 Bus clock filter count is 9 01001 Bus clock filter count is 10 01010 Bus cl...

Page 335: ...g the last Chip Reset Address 4007_F000h base 7h offset 4007_F007h Bit 7 6 5 4 3 2 1 0 Read 0 EZP_MS 0 Write Reset 0 0 0 0 0 0 0 0 RCM_MR field descriptions Field Description 7 2 Reserved This field i...

Page 336: ...used by POR 1 Reset caused by POR 6 SPIN Sticky External Reset Pin Indicates a reset has been caused by an active low level on the external RESET pin 0 Reset not caused by external reset pin 1 Reset c...

Page 337: ...his reset Any enabled wakeup source in a VLLSx mode causes a reset 0 Reset not caused by LLWU module wakeup source 1 Reset caused by LLWU module wakeup source 14 2 7 Sticky System Reset Status Registe...

Page 338: ...ger system setting of the System Reset Request bit in the MDM AP Control Register 0 Reset not caused by host debugger system setting of the System Reset Request bit 1 Reset caused by host debugger sys...

Page 339: ...that mode This chapter describes all the available low power modes the sequence followed to enter exit each mode and the functionality available while in each of the modes The SMC is able to function...

Page 340: ...variety of stop modes are available that allow the state retention partial power down or full power down of certain logic and or memory I O states are held in all modes of operation Several registers...

Page 341: ...from supporting peripherals are valid The MCU is placed in a low leakage mode by powering down the internal logic and the system RAM2 partition The system RAM1 partition contents are retained in this...

Page 342: ...ry into any low power run or stop mode The enabling of the low power run or stop mode occurs by configuring the Power Mode Control register PMCTRL The PMPROT register can be written only once after an...

Page 343: ...allows the MCU to enter any low leakage stop mode LLS 0 Any LLSx mode is not allowed 1 Any LLSx mode is allowed 2 Reserved This field is reserved This read only field is reserved and always has the va...

Page 344: ...s read only field is reserved and always has the value 0 3 STOPA Stop Aborted When set this read only status bit indicates an interrupt occured during the previous stop mode entry sequence preventing...

Page 345: ...0 0 1 1 SMC_STOPCTRL field descriptions Field Description 7 6 PSTOPO Partial Stop Option These bits control whether a Partial Stop mode is entered when STOPM STOP When entering a Partial Stop mode fr...

Page 346: ...LSx 011 VLLS3 if PMCTRL STOPM VLLSx LLS3 if PMCTRL STOPM LLSx 100 Reserved 101 Reserved 110 Reserved 111 Reserved 15 3 4 Power Mode Status register SMC_PMSTAT PMSTAT is a read only one hot register wh...

Page 347: ...is VLPW 0001_0000 Current power mode is VLPS 0010_0000 Current power mode is LLS 0100_0000 Current power mode is VLLS 1000_0000 Current power mode is HSRUN 15 4 Functional description 15 4 1 Power mo...

Page 348: ...the previous figure Table 15 7 Power mode transition triggers Transition From To Trigger conditions 1 RUN WAIT Sleep now or sleep on exit modes entered with SLEEPDEEP clear controlled in System Contr...

Page 349: ...hich is controlled in System Control Register in ARM core See note 1 VLPS VLPR Interrupt NOTE If VLPS was entered directly from RUN transition 7 hardware forces exit back to RUN and does not allow a t...

Page 350: ...1 or 10 then only a Partial Stop mode is entered instead of STOP 3 If PMCTRL STOPM 000 and STOPCTRL PSTOPO 00 then VLPS mode is entered instead of STOP If PMCTRL STOPM 000 and STOPCTRL PSTOPO 01 or 10...

Page 351: ...es 4 The CPU clock is enabled and the CPU begins servicing the reset or interrupt that initiated the exit from the low power stop mode 15 4 2 3 Aborted stop mode entry If an interrupt occurs during a...

Page 352: ...the start PC from vector table offset 0x004 LR is set to 0xFFFF_FFFF To reduce power in this mode disable the clocks to unused modules using their corresponding clock gating control bits in the SIM s...

Page 353: ...a higher execution frequency is desired poll PMSTAT until it is set to RUN when returning from VLPR mode Any reset always causes an exit from VLPR and returns the device to RUN mode after the MCU exi...

Page 354: ...est occurs the CPU exits WAIT mode and resumes processing in RUN mode beginning with the stacking operations leading to the interrupt service routine A system reset will cause an exit from WAIT mode r...

Page 355: ...may be traded off NOTE All clock monitors must be disabled before entering these low power modes Stop VLPS VLPR VLPW LLS and VLLSx The various stop modes are selected by setting the appropriate fields...

Page 356: ...in normal RUN mode and PMCTRL STOPM 010 When VLPS is entered directly from RUN mode exit to VLPR is disabled by hardware and the system will always exit back to RUN In VLPS the on chip voltage regula...

Page 357: ...xiting via the RESET pin RCM_SRS0 PIN and RCM_SRS0 WAKEUP are set 15 4 5 4 Very Low Leakage Stop VLLSx modes This device contains these very low leakage modes VLLS3 VLLS2 VLLS1 VLLS0 VLLSx is often us...

Page 358: ...ves a corresponding acknowledge for each signal that is both CDBGPWRUPACK and CSYSPWRUPACK When both requests are asserted the mode controller handles attempts to enter STOP and VLPS by entering an em...

Page 359: ...ebug IP and then asserts the VLLDBGACK control bit to allow the RCM to release the ARM core from reset and allow CPU operation to begin The VLLDBGACK bit is cleared by the debugger or can be left set...

Page 360: ...Functional description K22F Sub Family Reference Manual Rev 3 7 2014 360 Freescale Semiconductor Inc...

Page 361: ...voltage regulator Active POR providing brown out detect Low voltage detect supporting two low voltage trip points with four warning levels per trip point 16 3 Low voltage detect LVD system This devic...

Page 362: ...voltage condition The low voltage detection threshold is determined by LVDSC1 LVDV After an LVD reset occurs the LVD system holds the MCU in reset until the supply voltage rises above this threshold T...

Page 363: ...in the I O are released and default to their reset state In this case no write to REGSC ACKISO is needed 16 5 Memory map and register descriptions Details about the PMC registers can be found here NOT...

Page 364: ...systems that must have LVD always on configure the Power Mode Protection PMPROT register of the SMC module SMC_PMPROT to disallow any very low power or low leakage modes from being enabled See the dev...

Page 365: ...e 0 1 0 LVDV Low Voltage Detect Voltage Select Selects the LVD trip point voltage V LVD 00 Low trip point selected V LVD V LVDL 01 High trip point selected V LVD V LVDH 10 Reserved 11 Reserved 16 5 2...

Page 366: ...Enables hardware interrupt requests for LVWF 0 Hardware interrupt disabled use polling 1 Request a hardware interrupt when LVWF 1 4 2 Reserved This field is reserved This read only field is reserved...

Page 367: ...in VLPx LLS and VLLSx modes 1 Bandgap voltage reference is enabled in VLPx LLS and VLLSx modes 3 ACKISO Acknowledge Isolation Reading this field indicates whether certain peripherals and the I O pads...

Page 368: ...eld Description 0 BGBE Bandgap Buffer Enable Enables the bandgap buffer 0 Bandgap buffer not enabled 1 Bandgap buffer enabled Memory map and register descriptions K22F Sub Family Reference Manual Rev...

Page 369: ...o exit both LLS and VLLS through a reset flow The LLWU module also includes two optional digital pin filters for the external wakeup pins See AN4503 Power Management for Kinetis and ColdFire MCUs for...

Page 370: ...interrupt flow when exiting LLS NOTE The LLWU interrupt must not be masked by the interrupt controller to avoid a scenario where the system does not fully exit Stop mode on an LLS recovery 17 1 2 2 V...

Page 371: ...leakge mode interrupt flow reset flow LLWU_P0 LLWU_P15 Pin filter 1 wakeup occurred Interrupt module flag detect WUPE15 2 Edge detect enter low leakge mode WUPE0 Edge detect Module7 interrupt flag LLW...

Page 372: ...that caused exit from a low leakage power mode includes external pin or internal module interrupt Wake up pin filter enable registers NOTE The LLWU registers can be written only in supervisor mode Wri...

Page 373: ...ct the edge detect type for the external wakeup input pins LLWU_P3 LLWU_P0 NOTE This register is reset on Chip Reset not VLLS and by reset types that trigger Chip Reset not VLLS It is unaffected by re...

Page 374: ...l input pin enabled with falling edge detection 11 External input pin enabled with any change detection 17 3 2 LLWU Pin Enable 2 register LLWU_PE2 LLWU_PE2 contains the field to enable and select the...

Page 375: ...ed with any change detection 1 0 WUPE4 Wakeup Pin Enable For LLWU_P4 Enables and configures the edge detection for the wakeup pin 00 External input pin disabled as wakeup input 01 External input pin e...

Page 376: ...sabled as wakeup input 01 External input pin enabled with rising edge detection 10 External input pin enabled with falling edge detection 11 External input pin enabled with any change detection 1 0 WU...

Page 377: ...keup Pin Enable For LLWU_P13 Enables and configures the edge detection for the wakeup pin 00 External input pin disabled as wakeup input 01 External input pin enabled with rising edge detection 10 Ext...

Page 378: ...le flag not used as wakeup source 1 Internal module flag used as wakeup source 4 WUME4 Wakeup Module Enable For Module 4 Enables an internal module as a wakeup source input 0 Internal module flag not...

Page 379: ...ot VLLS and by reset types that trigger Chip Reset not VLLS It is unaffected by reset types that do not trigger Chip Reset not VLLS See the Introduction details for more information Address 4007_C000h...

Page 380: ...clear the flag write a 1 to WUF3 0 LLWU_P3 input was not a wake up source 1 LLWU_P3 input was a wake up source 2 WUF2 Wakeup Flag For LLWU_P2 Indicates that an enabled external wakeup pin was a sourc...

Page 381: ...UF9 WUF8 Write w1c w1c w1c w1c w1c w1c w1c w1c Reset 0 0 0 0 0 0 0 0 LLWU_F2 field descriptions Field Description 7 WUF15 Wakeup Flag For LLWU_P15 Indicates that an enabled external wakeup pin was a s...

Page 382: ...was a source of exiting a low leakage power mode To clear the flag write a 1 to WUF9 0 LLWU_P9 input was not a wakeup source 1 LLWU_P9 input was a wakeup source 0 WUF8 Wakeup Flag For LLWU_P8 Indicate...

Page 383: ...Module 6 input was not a wakeup source 1 Module 6 input was a wakeup source 5 MWUF5 Wakeup flag For module 5 Indicates that an enabled internal peripheral was a source of exiting a low leakage power...

Page 384: ...anism 0 Module 0 input was not a wakeup source 1 Module 0 input was a wakeup source 17 3 9 LLWU Pin Filter 1 register LLWU_FILT1 LLWU_FILT1 is a control and status register that is used to enable disa...

Page 385: ...LWU_FILT2 is a control and status register that is used to enable disable the digital filter 2 features for an external pin NOTE This register is reset on Chip Reset not VLLS and by reset types that t...

Page 386: ...operational only in LLS and VLLSx modes The LLWU module contains pin enables for each external pin and internal module For each external pin the user can disable or select the edge type for the wakeup...

Page 387: ...a reset vector fetch 17 4 3 Initialization For an enabled peripheral wakeup input the peripheral flag must be cleared by software before entering LLS or VLLSx mode to avoid an immediate exit from the...

Page 388: ...Functional description K22F Sub Family Reference Manual Rev 3 7 2014 388 Freescale Semiconductor Inc...

Page 389: ...on 18 2 Memory map register descriptions The memory map and register descriptions below describe the registers using byte addresses MCM memory map Absolute address hex Register name Width in bits Acce...

Page 390: ...d descriptions Field Description 15 8 Reserved This field is reserved This read only field is reserved and always has the value 0 7 0 ASC Each bit in the ASC field indicates whether there is a corresp...

Page 391: ...crossbar masters Address E008_0000h base Ch offset E008_000Ch Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R 0 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0...

Page 392: ...the flags remain asserted until software clears the corresponding FPSCR bit Address E008_0000h base 10h offset E008_0010h Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R FIDCE 0 FIXCE FUFCE FOF...

Page 393: ...the processor s FPU Once set this bit remains set until software clears the FPSCR IDC bit 0 No interrupt 1 Interrupt occurred 14 13 Reserved This field is reserved This read only field is reserved an...

Page 394: ...ected in the processor s FPU Once set this bit remains set until software clears the FPSCR DZC bit 0 No interrupt 1 Interrupt occurred 8 FIOC FPU invalid operation interrupt status This read only bit...

Page 395: ...nly field is reserved and always has the value 0 2 CPOWOI Compute Operation wakeup on interrupt 0 No effect 1 When set the CPOREQ is cleared on any interrupt or exception vector fetch 1 CPOACK Compute...

Page 396: ...nabled FUFCE and an underflow occurs FUFC FPU overflow interrupt is enabled FOFCE and an overflow occurs FOFC FPU divide by zero interrupt is enabled FDZCE and a divide by zero occurs FDZC FPU invalid...

Page 397: ...is structure allows up to four bus masters to access different bus slaves simultaneously while providing arbitration among the bus masters when they access the same slave 19 1 1 Features The crossbar...

Page 398: ...of whether it actually owns the slave port it is targeting While the master does not have control of the slave port it is targeting it simply waits A master is given control of the targeted slave port...

Page 399: ...xed priority operation When operating in fixed priority mode each master is assigned a unique priority level with the highest numbered master having the highest priority for example in a system with 5...

Page 400: ...ber ID of the last master to perform a transfer on the slave bus The highest priority requesting master becomes owner of the slave bus at the next transfer boundary Priority is based on how far ahead...

Page 401: ...AXBS section of the configuration chapter for the reset state of the arbitration scheme Chapter 19 Crossbar Switch Lite AXBS Lite K22F Sub Family Reference Manual Rev 3 7 2014 Freescale Semiconductor...

Page 402: ...Initialization application information K22F Sub Family Reference Manual Rev 3 7 2014 402 Freescale Semiconductor Inc...

Page 403: ...assignments The bridge includes separate clock enable inputs for each of the slots to accommodate slower peripherals 20 1 1 Features Key features of the peripheral bridge are Supports peripheral slot...

Page 404: ...bar switch and the slave peripheral bus The peripheral bridge manages all transactions destined for the attached slave devices and generates select signals for modules on the peripheral bus by decodin...

Page 405: ...of this module s instances see the chip configuration information 21 1 1 Overview The Direct Memory Access Multiplexer DMAMUX routes DMA sources called slots to any of the 16 DMA channels This proces...

Page 406: ...ur always on slots can be routed to 16 channels 16 independently selectable DMA channel routers The first four channels additionally provide a trigger functionality Each channel router can be assigned...

Page 407: ...UX has no external pins 21 3 Memory map register definition This section provides a detailed description of all memory mapped registers in the DMAMUX DMAMUX memory map Absolute address hex Register na...

Page 408: ...slots peripheral slots or always on slots in the system NOTE Setting multiple CHCFG registers with the same source value will result in unpredictable behavior This is true even if a channel is disable...

Page 409: ...nctionally the DMAMUX channels may be divided into two classes Channels that implement the normal routing functionality plus periodic triggering capability Channels that implement only the normal rout...

Page 410: ...been seen This is illustrated in the following figure DMA request Peripheral request Trigger Figure 21 20 DMAMUX channel triggering normal operation After the DMA request has been serviced the periph...

Page 411: ...hod to periodically read data from external devices and transfer the results into memory without processor intervention Using the GPIO ports to drive or sample waveforms By configuring the DMA to tran...

Page 412: ...e software should initiate the start of a DMA transfer an always enabled DMA source can be used to provide maximum flexibility When activating a DMA channel via software subsequent executions of the m...

Page 413: ...use 21 5 2 Enabling and configuring sources To enable a source with periodic triggering 1 Determine with which DMA channel the source will be associated Note that only the first 4 DMA channels have pe...

Page 414: ...ing the channel 3 Write 0x85 to CHCFG1 base address 0x01 The following code example illustrates steps 1 and 3 above In File registers h define DMAMUX_BASE_ADDR 0x40021000 Example only Following exampl...

Page 415: ...le illustrates steps 2 and 3 above In File registers h define DMAMUX_BASE_ADDR 0x40021000 Example only Following example assumes char is 8 bits volatile unsigned char CHCFG0 volatile unsigned char DMA...

Page 416: ...In File main c include registers h CHCFG8 0x00 CHCFG8 0x87 Initialization application information K22F Sub Family Reference Manual Rev 3 7 2014 416 Freescale Semiconductor Inc...

Page 417: ...lex data transfers with minimal intervention from a host processor The hardware microarchitecture includes A DMA engine that performs Source and destination address calculations Data movement operatio...

Page 418: ...Data Write Address Internal Peripheral Bus eDMA Peripheral Request eDMA Done Figure 22 1 eDMA system block diagram 22 1 2 Block parts The eDMA module is partitioned into two major modules the eDMA eng...

Page 419: ...ata bus is the primary output The address and data path modules directly support the 2 stage pipelined internal bus The address path module represents the 1st stage of the bus pipeline address phase w...

Page 420: ...sfer control descriptor TCD organized to support two deep nested transfer operations 32 byte TCD stored in local memory for each channel An inner data transfer loop defined by a minor byte transfer co...

Page 421: ...mode via the control register If CR EDBG is cleared the DMA continues to operate If CR EDBG is set the eDMA stops transferring data If Debug mode is entered while a channel is active the eDMA continue...

Page 422: ...ialization Prior to activating a channel you must initialize its TCD with the appropriate transfer profile Memory map register definition K22F Sub Family Reference Manual Rev 3 7 2014 422 Freescale Se...

Page 423: ...9 8 7 6 5 4 3 2 1 0 CITER E_LINK CITER or CITER LINKCH CITER DOFF DLAST_SGA BITER E_LINK BITER or BITER LINKCH BITER START INT_MAJ INT_HALF D_REQ E_SG MAJOR E_LINK ACTIVE DONE BWC MAJOR LINKCH NBYTES...

Page 424: ...Request Register DMA_SERQ 8 W always reads 0 00h 22 3 8 446 4000_801C Clear DONE Status Bit Register DMA_CDNE 8 W always reads 0 00h 22 3 9 447 4000_801D Set START Bit Register DMA_SSRT 8 W always re...

Page 425: ...Loop Disabled DMA_TCD0_NBYTES_MLNO 32 R W Undefined 22 3 21 464 4000_9008 TCD Signed Minor Loop Offset Minor Loop Enabled and Offset Disabled DMA_TCD0_NBYTES_MLOFFNO 32 R W Undefined 22 3 22 465 4000_...

Page 426: ...ink Major Loop Count Channel Linking Disabled DMA_TCD1_BITER_ELINKNO 16 R W Undefined 22 3 32 475 4000_9040 TCD Source Address DMA_TCD2_SADDR 32 R W Undefined 22 3 18 462 4000_9044 TCD Signed Source A...

Page 427: ...bled DMA_TCD3_CITER_ELINKYES 16 R W Undefined 22 3 27 469 4000_9076 DMA_TCD3_CITER_ELINKNO 16 R W Undefined 22 3 28 470 4000_9078 TCD Last Destination Address Adjustment Scatter Gather Address DMA_TCD...

Page 428: ...65 4000_90A8 TCD Signed Minor Loop Offset Minor Loop and Offset Enabled DMA_TCD5_NBYTES_MLOFFYES 32 R W Undefined 22 3 23 466 4000_90AC TCD Last Source Address Adjustment DMA_TCD5_SLAST 32 R W Undefin...

Page 429: ...s DMA_TCD7_SADDR 32 R W Undefined 22 3 18 462 4000_90E4 TCD Signed Source Address Offset DMA_TCD7_SOFF 16 R W Undefined 22 3 19 462 4000_90E6 TCD Transfer Attributes DMA_TCD7_ATTR 16 R W Undefined 22...

Page 430: ...catter Gather Address DMA_TCD8_DLASTSGA 32 R W Undefined 22 3 29 471 4000_911C TCD Control and Status DMA_TCD8_CSR 16 R W Undefined 22 3 30 472 4000_911E TCD Beginning Minor Loop Link Major Loop Count...

Page 431: ...R W Undefined 22 3 24 467 4000_9150 TCD Destination Address DMA_TCD10_DADDR 32 R W Undefined 22 3 25 468 4000_9154 TCD Signed Destination Address Offset DMA_TCD10_DOFF 16 R W Undefined 22 3 26 468 40...

Page 432: ...Signed Source Address Offset DMA_TCD12_SOFF 16 R W Undefined 22 3 19 462 4000_9186 TCD Transfer Attributes DMA_TCD12_ATTR 16 R W Undefined 22 3 20 463 4000_9188 TCD Minor Byte Count Minor Loop Disabl...

Page 433: ...28 470 4000_91B8 TCD Last Destination Address Adjustment Scatter Gather Address DMA_TCD13_DLASTSGA 32 R W Undefined 22 3 29 471 4000_91BC TCD Control and Status DMA_TCD13_CSR 16 R W Undefined 22 3 30...

Page 434: ...set Minor Loop Enabled and Offset Disabled DMA_TCD15_NBYTES_MLOFFNO 32 R W Undefined 22 3 22 465 4000_91E8 TCD Signed Minor Loop Offset Minor Loop and Offset Enabled DMA_TCD15_NBYTES_MLOFFYES 32 R W U...

Page 435: ...offsets TCDn_SLAST and TCDn_DLAST_SGA are used to compute the next TCDn_SADDR and TCDn_DADDR values When minor loop mapping is enabled EMLM is 1 TCDn word2 is redefined A portion of TCDn word2 is used...

Page 436: ...ly field is reserved and always has the value 0 7 EMLM Enable Minor Loop Mapping 0 Disabled TCDn word2 is defined as a 32 bit NBYTES field 1 Enabled TCDn word2 is redefined to include individual enabl...

Page 437: ...ed channel error Channel errors can be caused by A configuration error that is An illegal setting in the transfer control descriptor or An illegal priority register setting in fixed arbitration An err...

Page 438: ...rded error was a configuration error detected in the TCDn_SADDR field TCDn_SADDR is inconsistent with TCDn_ATTR SSIZE 6 SOE Source Offset Error 0 No source offset configuration error 1 The last record...

Page 439: ...enable is directly affected by writes to this register it is also affected by writes to the SERQ and CERQ registers These registers are provided so the request enable for a single channel can easily...

Page 440: ...is enabled 10 ERQ10 Enable DMA Request 10 0 The DMA request signal for the corresponding channel is disabled 1 The DMA request signal for the corresponding channel is enabled 9 ERQ9 Enable DMA Reques...

Page 441: ...signal for the corresponding channel is enabled 22 3 4 Enable Error Interrupt Register DMA_EEI The EEI register provides a bit map for the 16 channels to enable the error interrupt signal for each ch...

Page 442: ...al for corresponding channel generates an error interrupt request 11 EEI11 Enable Error Interrupt 11 0 The error signal for corresponding channel does not generate an error interrupt 1 The assertion o...

Page 443: ...tes an error interrupt request 1 EEI1 Enable Error Interrupt 1 0 The error signal for corresponding channel does not generate an error interrupt 1 The assertion of the error signal for corresponding c...

Page 444: ...the EEI to be set Setting the SAEE bit provides a global set function forcing the entire EEI contents to be set If the NOP bit is set the command is ignored This allows you to write multiple byte reg...

Page 445: ...OP is set the command is ignored This allows you to write multiple byte registers as a 32 bit word Reads of this register return all zeroes Address 4000_8000h base 1Ah offset 4000_801Ah Bit 7 6 5 4 3...

Page 446: ...registers as a 32 bit word Reads of this register return all zeroes Address 4000_8000h base 1Bh offset 4000_801Bh Bit 7 6 5 4 3 2 1 0 Read 0 0 0 Write NOP SAER 0 SERQ Reset 0 0 0 0 0 0 0 0 DMA_SERQ fi...

Page 447: ...t word Reads of this register return all zeroes Address 4000_8000h base 1Ch offset 4000_801Ch Bit 7 6 5 4 3 2 1 0 Read 0 0 0 Write NOP CADN 0 CDNE Reset 0 0 0 0 0 0 0 0 DMA_CDNE field descriptions Fie...

Page 448: ...eads of this register return all zeroes Address 4000_8000h base 1Dh offset 4000_801Dh Bit 7 6 5 4 3 2 1 0 Read 0 0 0 Write NOP SAST 0 SSRT Reset 0 0 0 0 0 0 0 0 DMA_SSRT field descriptions Field Descr...

Page 449: ...ple byte registers as a 32 bit word Reads of this register return all zeroes Address 4000_8000h base 1Eh offset 4000_801Eh Bit 7 6 5 4 3 2 1 0 Read 0 0 0 Write NOP CAEI 0 CERR Reset 0 0 0 0 0 0 0 0 DM...

Page 450: ...u to write multiple byte registers as a 32 bit word Reads of this register return all zeroes Address 4000_8000h base 1Fh offset 4000_801Fh Bit 7 6 5 4 3 2 1 0 Read 0 0 0 Write NOP CAIR 0 CINT Reset 0...

Page 451: ...1 in any bit position clears the corresponding channel s interrupt request A zero in any bit position has no affect on the corresponding channel s current interrupt status The CINT register is provide...

Page 452: ...eared 1 The interrupt request for corresponding channel is active 9 INT9 Interrupt Request 9 0 The interrupt request for corresponding channel is cleared 1 The interrupt request for corresponding chan...

Page 453: ...to the interrupt controller During the execution of the interrupt service routine associated with any DMA errors it is software s responsibility to clear the appropriate bit negating the error interr...

Page 454: ...annel has not occurred 1 An error in this channel has occurred 14 ERR14 Error In Channel 14 0 An error in this channel has not occurred 1 An error in this channel has occurred 13 ERR13 Error In Channe...

Page 455: ...channel has not occurred 1 An error in this channel has occurred 4 ERR4 Error In Channel 4 0 An error in this channel has not occurred 1 An error in this channel has occurred 3 ERR3 Error In Channel...

Page 456: ...Therefore this status is affected by the ERQ bits Address 4000_8000h base 34h offset 4000_8034h Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R 0 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15...

Page 457: ...the period when a Hardware Request is Present on the Channel After the Request is completed and Channel is free the HRS bit is automatically cleared by hardware 0 A hardware service request for channe...

Page 458: ...request for channel 6 is not present 1 A hardware service request for channel 6 is present 5 HRS5 Hardware Request Status Channel 5 The HRS bit for its respective channel remains asserted for the per...

Page 459: ...tive channel remains asserted for the period when a Hardware Request is Present on the Channel After the Request is completed and Channel is free the HRS bit is automatically cleared by hardware 0 A h...

Page 460: ...request for channel 10 1 Enable asynchronous DMA request for channel 10 9 EDREQ_9 Enable asynchronous DMA request in stop mode for channel 9 0 Disable asynchronous DMA request for channel 9 1 Enable a...

Page 461: ...ion is enabled CR ERCA 0 the contents of these registers define the unique priorities associated with each channel The channel priorities are evaluated by numeric value for example 0 is the lowest pri...

Page 462: ...18 TCD Source Address DMA_TCDn_SADDR Address 4000_8000h base 1000h offset 32d i where i 0d to 15d Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R SADDR W R...

Page 463: ...ement a circular data queue easily For data queues requiring power of 2 size bytes the queue should start at a 0 modulo size address and the SMOD field should be set to the appropriate value for the q...

Page 464: ...3 2 1 0 R NBYTES W Reset x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Notes x Undefined at reset DMA_TCDn_NBYTES_MLNO field descriptions Field Description 31 0 NBYTES Minor Byte Tr...

Page 465: ...0h base 1008h offset 32d i where i 0d to 15d Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R SMLOE DMLOE NBYTES W Reset x x x x x x x x x x x x x x x x Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0...

Page 466: ...ed Minor Loop Offset Minor Loop and Offset Enabled DMA_TCDn_NBYTES_MLOFFYES One of three registers this register TCD_NBYTES_MLNO or TCD_NBYTES_MLOFFNO defines the number of bytes to transfer per reque...

Page 467: ...transferred This is an indivisible operation and cannot be halted It can however be stalled by using the bandwidth control field or via preemption After the minor count is exhausted the SADDR and DADD...

Page 468: ...ing to the destination data 22 3 26 TCD Signed Destination Address Offset DMA_TCDn_DOFF Address 4000_8000h base 1014h offset 32d i where i 0d to 15d Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Read DOFF...

Page 469: ...l linking NOTE This bit must be equal to the BITER ELINK bit otherwise a configuration error is reported 0 The channel to channel linking is disabled 1 The channel to channel linking is enabled 14 13...

Page 470: ...lag enables linking to another channel defined by the LINKCH field The link target channel initiates a channel service request via an internal mechanism that sets the TCDn_CSR START bit of the specifi...

Page 471: ...x x x x Notes x Undefined at reset DMA_TCDn_DLASTSGA field descriptions Field Description 31 0 DLASTSGA Destination last address adjustment or the memory address for the next transfer control descrip...

Page 472: ...fter the last write of each minor loop This behavior is a side effect of reducing start up latency 00 No eDMA engine stalls 01 Reserved 10 eDMA engine stalls for 4 cycles after each R W 11 eDMA engine...

Page 473: ...rmat The DLASTSGA field provides a memory pointer to the next TCD to be loaded into this channel after the major loop completes its execution 3 DREQ Disable Request If this flag is set the eDMA hardwa...

Page 474: ...defined by BITER LINKCH The link target channel initiates a channel service request via an internal mechanism that sets the TCDn_CSR START bit of the specified channel If channel linking disables the...

Page 475: ...CDn_BITER ELINK bit is cleared the TCDn_BITER register is defined as follows Address 4000_8000h base 101Eh offset 32d i where i 0d to 15d Bit 15 14 13 12 11 10 9 8 Read ELINK BITER Write Reset x x x x...

Page 476: ...ld must be set equal to the corresponding CITER field otherwise a configuration error is reported As the major iteration count is exhausted the contents of this field is reloaded into the CITER field...

Page 477: ...module then into the program model and channel arbitration In the next cycle the channel arbitration performs using the fixed priority or round robin algorithm After arbitration is complete the activ...

Page 478: ...n write processing continues until the minor byte count has transferred After the minor byte count has moved the final phase of the basic data flow is performed In this segment the address path logic...

Page 479: ...he transfer control descriptor or an illegal priority register setting in Fixed Arbitration mode or An error termination to a bus master read or write cycle A configuration error is reported when the...

Page 480: ...tion count at the point of the fault When a system bus error occurs the channel terminates after the next transfer Due to pipeline effect the next transfer is already in progress when the bus error is...

Page 481: ...priority channel After the preempting channel has completed all its minor loop data transfers the preempted channel is restored and resumes execution After the restored channel completes one read wri...

Page 482: ...ernal peripheral bus reads require two wait states and internal peripheral bus writes three wait states when viewed from the system bus data phase All internal peripheral bus accesses are 32 bits in s...

Page 483: ...itiated requests start at this point with the registering of the user write to TCDn word 7 3 Channel arbitration begins 4 Channel arbitration completes The transfer control descriptor local memory rea...

Page 484: ...s DMA requests can be processed every 11 5 cycles 4 4 5 2 3 This is the time from Cycle 4 to Cycle x 5 The resulting peak request rate as a function of the system frequency is shown in the following t...

Page 485: ...write zero wait states on the system bus from a cold start where no channel is executing and eDMA is idle are 11 cycles for a software that is a TCDn_CSR START bit request 12 cycles for a hardware tha...

Page 486: ...e arbitration and priority levels written into the programmer s model The eDMA engine reads the entire TCD including the TCD control and status fields as shown in the following table for the selected...

Page 487: ...nterrupt when major loop is half complete INT_MAJ Control bit to enable interrupt when major loop completes The following figure shows how each DMA request initiates one minor loop transfer or iterati...

Page 488: ...per channel basis with the exception of channel priority error ES CPE For all error types other than channel priority error the channel number causing the error is recorded in the Error Status regist...

Page 489: ...enabled For example the following TCD entry is configured to transfer 16 bytes of data The eDMA is programmed for one iteration of the major loop transferring 16 bytes per iteration The source memory...

Page 490: ...8 third iteration of the minor loop g Read byte from location 0x100C read byte from location 0x100D read byte from 0x100E read byte from 0x100F h Write 32 bits to location 0x200C last iteration of the...

Page 491: ...bits to location 0x2004 second iteration of the minor loop e Read byte from location 0x1008 read byte from location 0x1009 read byte from 0x100A read byte from 0x100B f Write 32 bits to location 0x20...

Page 492: ...yte from 0x101E read byte from 0x101F h Write 32 bits to location 0x201C last iteration of the minor loop major loop complete 14 eDMA engine writes TCDn_SADDR 0x1000 TCDn_DADDR 0x2000 TCDn_CITER 2 TCD...

Page 493: ...hen using software initiated service requests The first is to read the TCDn_CITER field and test for a change Another method may be extracted from the sequence shown below The second method is to test...

Page 494: ...true TCDn_SADDR TCDn_DADDR and TCDn_NBYTES values if read while a channel executes The true values of the SADDR DADDR and NBYTES are the values the eDMA engine currently uses in its internal register...

Page 495: ...k is made after each iteration of the major loop except for the last When the major loop is exhausted only the major loop channel link fields are used to determine if a channel link should be made For...

Page 496: ...SR MAJOR_LINKCH Link channel number when linking at end of major loop 22 5 7 Dynamic programming This section provides recommended methods to change the programming model during channel execution 22 5...

Page 497: ...lear the TCD done bit before writing the TCD major e_link bit The TCD done bit is cleared automatically by the eDMA engine after a channel begins execution 22 5 7 3 Dynamic scatter gather Scatter gath...

Page 498: ...the TCD major linkch bits may be used for other purposes This method uses the TCD major linkch field as a TCD indentification ID 1 When the descriptors are built write a unique TCD ID in the TCD major...

Page 499: ...ecuting with a destination address daddr that was calculated using a scatter gather address written in the next step instead of a dlast final offest value 2 Write theTCD dlast_sga field with the scatt...

Page 500: ...Initialization application information K22F Sub Family Reference Manual Rev 3 7 2014 500 Freescale Semiconductor Inc...

Page 501: ...system External Watchdog Monitor EWM is designed to monitor external circuits as well as the MCU software flow This provides a back up mechanism to the internal watchdog that resets the MCU s CPU and...

Page 502: ...the EWM s counter freezes There are two possible ways to exit from Stop mode On exit from stop mode through a reset the EWM remains disabled On exit from stop mode by an interrupt the EWM is re enabl...

Page 503: ...ntry of debug mode it remains disabled 23 1 3 Block Diagram This figure shows the EWM block diagram Clock Gating Cell EWM_out EWM Out Logic EWM_out OR Low Power Clock Enable Counter Overflow CPU Reset...

Page 504: ...Control Register EWM_CTRL 8 R W 00h 23 3 1 504 4006_1001 Service Register EWM_SERV 8 W always reads 0 00h 23 3 2 505 4006_1002 Compare Low Register EWM_CMPL 8 R W 00h 23 3 3 505 4006_1003 Compare Hig...

Page 505: ...WM_SERV The SERV register provides the interface from the CPU to the EWM module It is write only and reads of this register return zero Address 4006_1000h base 1h offset 4006_1001h Bit 7 6 5 4 3 2 1 0...

Page 506: ...clocks time for the CPU to service the EWM counter NOTE This register can be written only once after a CPU reset Writing this register more than once generates a bus transfer error NOTE The valid valu...

Page 507: ...the EWM counter can be prescaled as below Prescaled clock frequency low power clock source frequency 1 CLK_DIV 23 4 Functional Description The following sections describe functional details of the EW...

Page 508: ...ister When the EWM_out pin is asserted it can only be deasserted by forcing a MCU reset Note EWM_out pad must be in pull down state when EWM functionality is used and when EWM is under Reset 23 4 2 Th...

Page 509: ...reset occurs The EWM compare registers are used to create a service window which is used by the CPU to service refresh the EWM module If the CPU services the EWM when the counter value lies between CM...

Page 510: ...assert the EWM_out pin irrespective of the EWM_in pin The EWM_out pin is expected to gate critical safety circuits Any illegal service on EWM has no effect on EWM_out 23 4 6 EWM Interrupt When EWM_out...

Page 511: ...n The watchdog monitors the operation of the system by expecting periodic communication from the software generally known as servicing or refreshing the watchdog If this periodic refreshing does not o...

Page 512: ...hat WDOG timer is operational NOTE Reading the watchdog timer counter while running the watchdog on the bus clock might not give the accurate counter value Windowed refresh option Provides robust chec...

Page 513: ...ection WDOG CLK R System reset and SRS register Interrupt IRQ_RST_ EN 1 Invalid Unlock Seq 32 bit Timer Timer Time out Refresh Outside Window Invalid Refresh Seq No config after unlocking No unlock af...

Page 514: ...clock You can also switch over to an alternate clock source if required through a control register bit 24 3 1 Unlocking and updating the watchdog As long as ALLOW_UPDATE in the watchdog control regis...

Page 515: ...ed to update them only within a period of 256 bus clock cycles after unlocking This period is known as the watchdog configuration time WCT In addition these register bits can be modified only once aft...

Page 516: ...operation In this mode of operation a restriction is placed on the point in time within the time out period at which the watchdog can be refreshed The refresh is considered valid only when the watchdo...

Page 517: ...ock is on a reset occurs or interrupt then reset if enabled The entry into Debug mode within WCT after reset is treated differently The WDOG timer is kept reset to zero and there is no need to unlock...

Page 518: ...a watchdog test unlock and configure the watchdog The refresh and unlock operations and interrupt are not automatically disabled in the test mode 24 4 1 Quick test In this test the time out value of...

Page 519: ...pares with the Nth byte of the time out value register In this way the byte N is also tested along with the link between it and the preceding stage No other stages N 2 N 3 and N 1 N 2 are enabled for...

Page 520: ...of two values of the refresh sequence The watchdog can also generate an interrupt If IRQ_RST_EN is set then on the above mentioned events WDOG_ST_CTRL_L INT_FLG is set generating an interrupt A watchd...

Page 521: ...ount register WDOG_RSTCNT 16 R W 0000h 24 7 11 527 4005_2016 Watchdog Prescaler register WDOG_PRESC 16 R W 0400h 24 7 12 527 24 7 1 Watchdog Status and Control Register High WDOG_STCTRLH Address 4005_...

Page 522: ...ables or disables WDOG in Wait mode 0 WDOG is disabled in CPU Wait mode 1 WDOG is enabled in CPU Wait mode 6 STOPEN Enables or disables WDOG in Stop mode 0 WDOG is disabled in CPU Stop mode 1 WDOG is...

Page 523: ...ns Field Description 15 INTFLG Interrupt flag It is set when an exception occurs IRQRSTEN 1 is a precondition to set this flag INTFLG 1 results in an interrupt being issued followed by a reset WCT lat...

Page 524: ...ister High WDOG_WINH NOTE You must set the Window Register value lower than the Time out Value Register Address 4005_2000h base 8h offset 4005_2008h Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Read WINH...

Page 525: ...system 24 7 7 Watchdog Refresh register WDOG_REFRESH Address 4005_2000h base Ch offset 4005_200Ch Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Read WDOGREFRESH Write Reset 1 0 1 1 0 1 0 0 1 0 0 0 0 0 0 0...

Page 526: ...15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Read TIMEROUTHIGH Write Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 WDOG_TMROUTH field descriptions Field Description 15 0 TIMEROUTHIGH Shows the value of the upper 16...

Page 527: ...0 0 0 0 0 0 WDOG_PRESC field descriptions Field Description 15 11 Reserved This field is reserved This read only field is reserved and always has the value 0 10 8 PRESCVAL 3 bit prescaler for the wat...

Page 528: ...or the lower byte of the refresh or unlock register Take the refresh operation that expects a write of 0xA602 followed by 0xB480 to the refresh register as an example Table 24 14 Refresh for 8 bit acc...

Page 529: ...or watchdog functional test A maximum time period of 2 clock A cycles plus 2 clock B cycles elapses from the time a switch is requested to the occurrence of the actual clock switch where clock A and B...

Page 530: ...nal test mode and therefore you should pull the watchdog out of the functional test mode within WCT time of reset After emerging from a reset due to a watchdog functional test you still need to go thr...

Page 531: ...clock internal or external as a source for the MCU system clock The MCG operates in conjuction with a crystal oscillator which allows an external crystal ceramic resonator or another external clock so...

Page 532: ...or the fast clock can be selected as the clock source for the MCU Can be used as a clock source for other on chip peripherals Control signals for the MCG external reference low power oscillator clock...

Page 533: ...or other on chip peripherals MCG FLL Clock MCGFLLCLK is provided as a clock source for other on chip peripherals MCG Fixed Frequency Clock MCGFFCLK is provided as a clock source for other on chip peri...

Page 534: ...PLLCLKEN IREFS MCG Crystal Oscillator Enable Detect n 0 7 2n Oscillator OSC0 Oscillator OSC2 OSCSEL OSCINIT EREFS HGO RANGE PLLS Phase Detector Charge Pump Internal Filter VCO VCOOUT PLL VDIV 24 25 2...

Page 535: ...5 3 1 536 4006_4001 MCG Control 2 Register MCG_C2 8 R W 80h 25 3 2 537 4006_4002 MCG Control 3 Register MCG_C3 8 R W Undefined 25 3 3 538 4006_4003 MCG Control 4 Register MCG_C4 8 R W Undefined 25 3 4...

Page 536: ...ll other RANGE values Divide Factor is 64 010 If RANGE 0 or OSCSEL 1 Divide Factor is 4 for all other RANGE values Divide Factor is 128 011 If RANGE 0 or OSCSEL 1 Divide Factor is 8 for all other RANG...

Page 537: ...y the smallest amount possible If an FCFTRIM value stored in nonvolatile memory is to be used it is your responsibility to copy that value from the nonvolatile memory location to this bit 5 4 RANGE Fr...

Page 538: ...TRIM Write Reset x x x x x x x x Notes x Undefined at reset MCG_C3 field descriptions Field Description 7 0 SCTRIM Slow Internal Reference Clock Trim Setting SCTRIM 1 controls the slow internal refere...

Page 539: ...r DCO Range 00 0 31 25 39 0625 kHz 640 20 25 MHz 1 32 768 kHz 732 24 MHz 01 0 31 25 39 0625 kHz 1280 40 50 MHz 1 32 768 kHz 1464 48 MHz 10 0 31 25 39 0625 kHz 1920 60 75 MHz 1 32 768 kHz 2197 72 MHz 1...

Page 540: ...y location to this bit 1 A value for FCTRIM is loaded during reset from a factory programmed location 2 A value for SCFTRIM is loaded during reset from a factory programmed location 25 3 5 MCG Control...

Page 541: ...K0 is zero Table 25 7 PLL External Reference Divide Factor PRDIV 0 Divide Factor PRDIV 0 Divide Factor PRDIV 0 Divide Factor PRDIV 0 Divide Factor 00000 1 01000 9 10000 17 11000 25 00001 2 01001 10 10...

Page 542: ...r BLPE Whenever the CME0 bit is set to a logic 1 the value of the RANGE0 bits in the C2 register should not be changed CME0 bit should be set to a logic 0 before the MCG enters any Stop mode Otherwise...

Page 543: ...5 register or the VDIV0 4 0 bits in the C6 register causes the lock status bit to clear and stay cleared until the PLL has reacquired lock Loss of PLL reference clock will also cause the LOCK0 bit to...

Page 544: ...t due to internal synchronization between clock domains The IRCST bit will only be updated if the internal reference clock is enabled either by the MCG being in a mode that uses the IRC or by setting...

Page 545: ...to the new clock mode switch Otherwise FLL filter and frequency values will change 0 FLL filter and FLL frequency will reset on changes to currect clock mode 1 Fll filter and FLL frequency retain thei...

Page 546: ...re Value Low Register MCG_ATCVL Address 4006_4000h base Bh offset 4006_400Bh Bit 7 6 5 4 3 2 1 0 Read ATCVL Write Reset 0 0 0 0 0 0 0 0 MCG_ATCVL field descriptions Field Description 7 0 ATCVL ATM Com...

Page 547: ...a interrupt or a reset request is made following a loss of RTC external reference clock The LOCRE1 only has an affect when CME1 is set 0 Interrupt request is generated on a loss of RTC external refer...

Page 548: ...ed for RTC clock 1 External clock monitor is enabled for RTC clock 4 1 Reserved This field is reserved This read only field is reserved and always has the value 0 0 LOCS1 RTC Loss of Clock Status This...

Page 549: ...ock mode and the C1 CLKS and S CLKST will automatically be set to 2 b10 If entering Normal Stop mode when the MCG is in PEE mode with PLLSTEN 0 the MCG will reset to PBE clock mode and C1 CLKS and S C...

Page 550: ...to the FLL factor as selected by C4 DRST_DRS and C4 DMX32 bits times the external reference frequency as specified by C1 FRDIV and C2 RANGE See the C4 DMX32 bit description for more details In FEE mo...

Page 551: ...In PEE mode the MCGOUTCLK is derived from the output of PLL which is controlled by a external reference clock The PLL clock frequency locks to a multiplication factor as specified by its correspondin...

Page 552: ...signals are static except in the following case MCGPLLCLK is active in Normal Stop mode when PLLSTEN 1 MCGIRCLK is active in Normal Stop mode when all the following conditions become true C1 IRCLKEN...

Page 553: ...or PLL to be disabled and thus conserve power when these systems are not being used C4 DRST_DRS can not be written while C2 LP is 1 However in some applications it may be desirable to enable the FLL...

Page 554: ...is enabled along with the enabled external clock monitor For the case when C6 CME0 1 a loss of clock is detected if the OSC0 external reference falls below a minimum frequency floc_high or floc_low de...

Page 555: ...ing ATC ATME bit to 1 The ATM machine will start auto trimming the selected IRC clock During the autotrim process ATC ATME will remain asserted and will deassert after ATM is completed or an abort occ...

Page 556: ...calculated expected count value must be multiplied by 128 before storing it in the ATCV register Therefore the ATCV Expected Count Value for trimming the 4 MHz IRC is calculated using the following f...

Page 557: ...the FLL reference clock in the range of 31 25 kHz to 39 0625 kHz Although the FLL is bypassed it is still on in FBE mode The internal reference can optionally be kept running by setting C1 IRCLKEN Thi...

Page 558: ...of 1464 will be 48 MHz When using a 32 768 kHz external reference if the maximum mid high range DCO frequency that can be achieved with a 32 768 kHz reference is desired set C4 DRST_DRS bits to 2 b10...

Page 559: ...er FLL multiplication factor could potentially push the microcontroller system clock out of specification and damage the part 25 5 3 MCG mode switching When switching between operational modes of the...

Page 560: ...the reference divider selected by the C1 FRDIV bits PLL_R is the reference divider selected by C5 PRDIV0 bits F is the FLL factor selected by C4 DRST_DRS and C4 DMX32 bits and M is the multiplier sel...

Page 561: ...ate correct PLL reference frequency a C5 0x01 C5 PRDIV set to 5 b00001 or divide by 2 resulting in a pll reference frequency of 4MHz 2 2 MHz 3 Then FBE must transition either directly to PBE mode or f...

Page 562: ...ck 4 Lastly PBE mode transitions into PEE mode a C1 0x10 C1 CLKS set to 2 b00 to select the output of the PLL as the system clock source b Loop until S CLKST are 2 b11 indicating that the PLL output i...

Page 563: ...MODE C2 0x1E C2 LP 1 CHECK CHECK C1 0x10 CHECK CONTINUE IN PEE MODE S PLLST 1 S LOCK 1 S CLKST 10 S CLKST 11 S LP 1 S IREFST 0 S OSCINIT 1 C5 0x01 C5 VDIV 1 Figure 25 15 Flowchart of FEI to PEE mode t...

Page 564: ...esired first set C2 LP to 1 b BLPE FBE C6 0x00 C6 PLLS clear to 0 to select the FLL At this time with C1 FRDIV value of 3 b010 the FLL divider is set to 128 resulting in a reference frequency of 4 MHz...

Page 565: ...d as the reference clock source c Loop until S CLKST are 2 b01 indicating that the internal reference clock is selected to feed MCGOUTCLK 4 Lastly FBI transitions into BLPI mode a C2 0x02 C2 LP is 1 C...

Page 566: ...IREFST 0 CHECK S CLKST 01 YES NO YES C2 LP 1 C6 0x00 IN BLPE MODE IN BLPE MODE NO YES C2 0x1C C2 LP 0 C2 0x1E ENTER BLPE MODE C2 LP 1 Figure 25 16 Flowchart of PEE to BLPI mode transition using an 4...

Page 567: ...to 2 b00 to select the output of the FLL as system clock source C1 FRDIV remain at 3 b010 or divide by 128 for a reference of 4 MHz 128 31 25 kHz C1 IREFS cleared to 0 selecting the external referenc...

Page 568: ...ill switch back to 640 C1 0x10 C2 0x00 C2 0x1C CHECK CHECK CHECK S OSCINIT 1 CONTINUE IN FEE MODE NO NO NO YES YES YES START IN BLPI MODE S IREFST 0 S CLKST 00 Figure 25 17 Flowchart of BLPI to FEE mo...

Page 569: ...MHz 8 32 MHz crystals and resonators High Range mode Automatic Gain Control AGC to optimize power consumption in high frequency ranges 3 8 MHz 8 32 MHz using low power mode High gain option in freque...

Page 570: ...ils for the external reference clock source in this MCU The figure found here shows the block diagram of the OSC module XTAL EXTAL XTL_CLK Mux 4096 Counter OSC Clock Enable STOP O SCERCLK_UNDIV ERCLKE...

Page 571: ...l possible connections Table 26 2 External Caystal Resonator Connections Oscillator Mode Connections Low frequency 32 kHz low power Connection 1 Low frequency 32 kHz high gain Connection 2 Connection...

Page 572: ...xP bits OSC VSS Cx Cy RF Crystal or Resonator XTAL EXTAL Figure 26 4 Crystal Ceramic Resonator Connections Connection 3 26 6 External Clock Connections In external clock mode the pins can be connected...

Page 573: ...n page 4006_5000 OSC Control Register OSC_CR 8 R W 00h 26 71 1 573 4006_5002 OSC_DIV OSC_OSC_DIV 8 R W 00h 26 71 2 575 26 71 1 OSC Control Register OSC_CR NOTE After OSC is enabled and starts generati...

Page 574: ...served This field is reserved This read only field is reserved and always has the value 0 3 SC2P Oscillator 2 pF Capacitor Load Configure Configures the oscillator load 0 Disable the selection 1 Add 2...

Page 575: ...This read only field is reserved and always has the value 0 3 Reserved This field is reserved This read only field is reserved and always has the value 0 2 Reserved This field is reserved This read on...

Page 576: ...its 26 8 1 1 Off The OSC enters the Off state when the system does not require OSC clocks Upon entering this state XTL_CLK is static unless OSC is configured to select the clock from the EXTAL pad by...

Page 577: ..._CLK_OUT Its frequency is determined by the external components being used 26 8 1 4 External Clock mode The OSC enters external clock state when it is enabled and external reference clock selection bi...

Page 578: ...al capacitors could be used 26 8 2 2 Low Frequency Low Power Mode In low frequency low power mode the oscillator uses a gain control loop to minimize power consumption As the oscillation amplitude inc...

Page 579: ...provides low pass frequency filtering as well as hysteresis for voltage filtering and converts the output to logic levels 26 8 3 Counter The oscillator output clock OSC_CLK_OUT is gated off until the...

Page 580: ...gister settings If CR ERCLKEN and CR EREFSTEN are set before entry to Low Leakage Stop modes the OSC is still functional in these modes After waking up from Very Low Leakage Stop VLLSx modes all OSC r...

Page 581: ...C 27 1 1 Features and Modes The key features of the RTC oscillator are as follows Supports 32 kHz crystals with very low power Consists of internal feed back resistor Consists of internal programmable...

Page 582: ...n to find out which signals are actually connected to the external pins Table 27 1 RTC Signal Descriptions Signal Description I O EXTAL32 Oscillator Input I XTAL32 Oscillator Output O 27 2 1 EXTAL32 O...

Page 583: ...supplies the negative resistor for the RTC oscillator The gain of the amplifier is controlled by the amplitude detector which optimizes the power consumption A schmitt trigger is used to translate the...

Page 584: ...There is no reset state associated with the RTC oscillator 27 7 Interrupts The RTC oscillator does not generate any interrupts Reset Overview K22F Sub Family Reference Manual Rev 3 7 2014 584 Freescal...

Page 585: ...ation of the memory and uses this information to ensure a proper interface The following table shows the supported read write operations Flash memory type Read Write Program flash memory 8 bit 16 bit...

Page 586: ...t 64 bit line size cache for a total of thirty two 64 bit entries with controls for replacement algorithm and lock per way for each bank Single entry buffer per bank Invalidation control for the specu...

Page 587: ...visible writes must occur after a programming or erase event is completed and before the new memory image is accessed The cache is a 4 way set associative cache with 8 sets The ways are numbered 0 3...

Page 588: ...4001_F13C Cache Tag Storage FMC_TAGVDW1S7 32 R W 0000_0000h 28 4 5 601 4001_F140 Cache Tag Storage FMC_TAGVDW2S0 32 R W 0000_0000h 28 4 6 602 4001_F144 Cache Tag Storage FMC_TAGVDW2S1 32 R W 0000_0000...

Page 589: ...32 R W 0000_0000h 28 4 9 604 4001_F240 Cache Data Storage upper word FMC_DATAW1S0U 32 R W 0000_0000h 28 4 10 604 4001_F244 Cache Data Storage lower word FMC_DATAW1S0L 32 R W 0000_0000h 28 4 11 605 40...

Page 590: ...F2A0 Cache Data Storage upper word FMC_DATAW2S4U 32 R W 0000_0000h 28 4 12 605 4001_F2A4 Cache Data Storage lower word FMC_DATAW2S4L 32 R W 0000_0000h 28 4 13 606 4001_F2A8 Cache Data Storage upper wo...

Page 591: ...torage lower word FMC_DATAW3S5L 32 R W 0000_0000h 28 4 15 607 4001_F2F0 Cache Data Storage upper word FMC_DATAW3S6U 32 R W 0000_0000h 28 4 14 606 4001_F2F4 Cache Data Storage lower word FMC_DATAW3S6L...

Page 592: ...led based on the logical number of the requesting crossbar switch master This field is further qualified by the PFBnCR BxDPE BxIPE bits 0 Prefetching for this master is enabled 1 Prefetching for this...

Page 593: ...oth read and write accesses may be performed by this master 11 10 M5AP 1 0 Master 5 Access Protection This field controls whether read and write access to the flash are allowed based on the logical ma...

Page 594: ...nd write access to the flash are allowed based on the logical master number of the requesting crossbar switch master 00 No access may be performed by this master 01 Only read accesses may be performed...

Page 595: ...s time of the flash array expressed in system clock cycles and RWSC is defined as Access time of flash array system clocks RWSC 1 The FMC automatically calculates this value based on the ratio of the...

Page 596: ...buffer and single entry buffer are immediately cleared This bit always reads as zero 0 Speculation buffer and single entry buffer are not affected 1 Invalidate clear speculation buffer and single ent...

Page 597: ...s or speculative accesses are initiated in response to instruction fetches 0 Do not prefetch in response to instruction fetches 1 Enable prefetches in response to instruction fetches 0 B0SEBE Bank 0 S...

Page 598: ...s read only field defines the number of wait states required to access the bank 1 flash memory The relationship between the read access time of the flash array expressed in system clock cycles and RWS...

Page 599: ...ata Prefetch Enable This bit controls whether prefetches or speculative accesses are initiated in response to data references 0 Do not prefetch in response to data references 1 Enable prefetches in re...

Page 600: ...R 0 tag 18 5 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R tag 18 5 0 valid W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FMC_TAGVDW0Sn field descriptions Field Descrip...

Page 601: ...0 tag 18 5 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R tag 18 5 0 valid W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FMC_TAGVDW1Sn field descriptions Field Descript...

Page 602: ...R 0 tag 18 5 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R tag 18 5 0 valid W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FMC_TAGVDW2Sn field descriptions Field Descrip...

Page 603: ...8 5 14 bit tag for cache entry 4 1 Reserved This field is reserved This read only field is reserved and always has the value 0 0 valid 1 bit valid for cache entry 28 4 8 Cache Data Storage upper word...

Page 604: ...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FMC_DATAW0SnL field descriptions Field Description 31 0 data 31 0 Bits 31 0 of data entry 28 4 10 Cache Data Storage upper word FMC_DATAW1SnU The cache of 64...

Page 605: ...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FMC_DATAW1SnL field descriptions Field Description 31 0 data 31 0 Bits 31 0 of data entry 28 4 12 Cache Data Storage upper word FMC_DATAW2SnU The cache of 64...

Page 606: ...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FMC_DATAW2SnL field descriptions Field Description 31 0 data 31 0 Bits 31 0 of data entry 28 4 14 Cache Data Storage upper word FMC_DATAW3SnU The cache of 64...

Page 607: ...0 0 0 0 0 0 0 0 0 FMC_DATAW3SnL field descriptions Field Description 31 0 data 31 0 Bits 31 0 of data entry 28 5 Functional description The FMC is a flash acceleration unit with flexible buffers for u...

Page 608: ...egister controls enable buffering and prefetching per memory bank and access type instruction fetch or data reference The cache also supports 3 types of LRU replacement algorithms LRU per set across a...

Page 609: ...stalls waiting for flash memory data to be returned None of the data is already stored in the cache or speculation buffer In this scenario the sequence of events for accessing the four longwords is as...

Page 610: ...plication is executing flash memory commands the FMC s cache might need to be disabled and or flushed to prevent the possibility of returning stale data Use the PFB0CR CINV_WAY field to invalidate the...

Page 611: ...bits from the 1 state erased to the 0 state programmed Only the erase operation restores bits from 0 to 1 bits cannot be programmed from a 0 to a 1 CAUTION A flash memory location must be in the eras...

Page 612: ...horized access to selected code segments Automated built in program and erase algorithms with verify 29 1 1 2 Other Flash Memory Module Features Internal high voltage supply generator for flash memory...

Page 613: ...sh block A macro within the flash memory module which provides the nonvolatile memory storage Flash Memory Module All flash blocks plus a flash management unit providing high level control and an inte...

Page 614: ...pon readout Since erased 1 states are subject to degradation just like programmed 0 states the data retention limit may be reached from the last erase operation not from the programming time RWW Read...

Page 615: ...ion Register FOPT 0x0_040C 1 Flash security byte Refer to the description of the Flash Security Register FSEC 29 3 2 Program Flash IFR Map The program flash IFR is nonvolatile information memory that...

Page 616: ...o the user The Program Once Field can be read any number of times This section of the program flash IFR is accessed in 4 byte or 8 Byte records using the Read Once and Program Once commands see Read O...

Page 617: ...ct Registers FTFA_FCCOB5 8 R W 00h 29 33 5 623 4002_000B Flash Common Command Object Registers FTFA_FCCOB4 8 R W 00h 29 33 5 623 4002_000C Flash Common Command Object Registers FTFA_FCCOBB 8 R W 00h 2...

Page 618: ...r only Access Registers FTFA_SACCH0 8 R Undefined 29 33 8 627 4002_0024 Supervisor only Access Registers FTFA_SACCL3 8 R Undefined 29 33 8 627 4002_0025 Supervisor only Access Registers FTFA_SACCL2 8...

Page 619: ...teed The RDCOLERR bit is cleared by writing a 1 to it Writing a 0 to RDCOLERR has no effect 0 No collision error detected 1 Collision error detected 5 ACCERR Flash Access Error Flag Indicates an illeg...

Page 620: ...CCIE Command Complete Interrupt Enable Controls interrupt generation when a flash command completes 0 Command complete interrupt disabled 1 Command complete interrupt enabled An interrupt request is...

Page 621: ...field is reserved and always has the value 0 0 Reserved This field is reserved This read only field is reserved and always has the value 0 29 33 3 Flash Security Register FTFA_FSEC This read only reg...

Page 622: ...has visibility of the current flash contents The state of the FSLACC bits is only relevant when SEC is set to secure When SEC is set to unsecure the FSLACC setting does not matter 00 Freescale factor...

Page 623: ...l bytes within the set append a 0 B hex identifier to the FCCOB register name FCCOB0 FCCOB1 FCCOBB Address 4002_0000h base 4h offset 1d i where i 0d to 11d Bit 7 6 5 4 3 2 1 0 Read CCOBn Write Reset 0...

Page 624: ...ata Byte 1 6 Data Byte 2 7 Data Byte 3 8 Data Byte 4 9 Data Byte 5 A Data Byte 6 B Data Byte 7 FCCOB Endianness The FCCOB register group uses a big endian addressing convention For all command paramet...

Page 625: ...nfiguration Field Then reprogram the program flash protection byte Address 4002_0000h base 10h offset 1d i where i 0d to 3d Bit 7 6 5 4 3 2 1 0 Read PROT Write Reset x x x x x x x x Notes x Undefined...

Page 626: ...flash region is protected 1 Program flash region is not protected 29 33 7 Execute only Access Registers FTFA_XACCn The XACC registers define which program flash segments are restricted to data read o...

Page 627: ...nt is accessible as data or in execute mode 29 33 8 Supervisor only Access Registers FTFA_SACCn The SACC registers define which program flash segments are restricted to supervisor only or user and sup...

Page 628: ...ons Field Description 7 0 SA Supervisor only access control 0 Associated segment is accessible in supervisor mode only 1 Associated segment is accessible in user or supervisor mode 29 33 9 Flash Acces...

Page 629: ...number of program flash segments that are available for XACC and SACC permissions All bits in the register are read only The contents of this register are loaded during the reset sequence Address 4002...

Page 630: ...2n program flash sizes four registers typically protect 32 regions of the program flash memory as shown in the following figure Program flash size 32 Program flash size 32 Program flash size 32 Progr...

Page 631: ...0 0x0_0000 Program flash Last program flash address Program flash size 64 XACCL3 XA1 Program flash size 64 XACCL3 XA2 Program flash size 64 XACCL3 XA3 Program flash size 64 XACCL3 XA4 Program flash si...

Page 632: ...odule can generate interrupt requests to the MCU upon the occurrence of various flash events These interrupt events and their associated status and control bits are shown in the following table Table...

Page 633: ...lash command is running CCIF 0 NOTE While the MCU is in very low power modes VLPR VLPW VLPS the flash memory module does not accept flash commands 29 4 5 Functional Modes of Operation The flash memory...

Page 634: ...eral bus writes The user cannot initiate any further flash commands until notified that the current command has completed The flash command structure and operation are detailed in Flash Command Operat...

Page 635: ...s a blocking mechanism that prevents a new command from launching can t clear FSTAT CCIF if the previous command resulted in an access error FSTAT ACCERR 1 or a protection violation FSTAT FPVIOL 1 In...

Page 636: ...ted back to the user via the FCCOB and FSTAT registers 4 The flash memory module sets FSTAT CCIF signifying that the command has completed The flow for a generic command write sequence is illustrated...

Page 637: ...k is erased then release MCU security 0x41 Read Once IFR Read 4 bytes of a dedicated 64 byte field in the program flash 0 IFR 0x43 Program Once IFR One time program of 4 bytes of a dedicated 64 byte f...

Page 638: ...nded flash array reads to the MCU always use the standard un margined read reference level Only the normal read level should be employed during normal flash usage The non standard user and factory mar...

Page 639: ...l factory programming 29 4 11 Flash Command Description This section describes all flash commands that can be launched by a command write sequence The flash memory module sets the FSTAT ACCERR bit and...

Page 640: ...reads all locations within the specified section of flash memory If the flash memory module fails to read all 1s that is the flash section is not erased FSTAT MGSTAT0 is set FSTAT CCIF sets after the...

Page 641: ...comparison at margin 1 fails FSTAT MGSTAT0 is set The flash memory module then sets the read margin for 0s re reads and compares again If the comparison at margin 0 fails FSTAT MGSTAT0 is set FSTAT CC...

Page 642: ...emory module The special purpose memory resources available include program flash IFR space and the Version ID field Each resource is assigned a select code as shown in Table 29 53 Table 29 52 Read Re...

Page 643: ...T ACCERR 29 4 11 4 Program Longword Command The Program Longword command programs four previously erased bytes in the program flash memory using an embedded algorithm CAUTION A flash memory location m...

Page 644: ...able 29 56 Program Longword Command Error Handling Error Condition Error Bit Command not available in current mode security FSTAT ACCERR An invalid flash address is supplied FSTAT ACCERR Flash address...

Page 645: ...on command to verify all bits are erased 29 4 11 5 1 Suspending an Erase Flash Sector Operation To suspend an Erase Flash Sector operation set the FCNFG ERSSUSP bit see Flash Configuration Field Descr...

Page 646: ...plete If the minimum period is continually violated i e the suspend requests come repeatedly and too quickly no forward progress is made by the Erase Flash Sector algorithm The resume suspend sequence...

Page 647: ...xecute Yes DONE No ERSSUSP 1 Save Erase Algo Set CCIF No Yes Start New Resume Erase No Abort User Cmd Interrupt Suspend Set SUSPACK 1 ERSSCR Suspended Command Initiation Yes No Yes Yes ERSSCR Complete...

Page 648: ...ased by setting the FSEC SEC field to the unsecure state The security byte in the flash configuration field see Flash Configuration Field Description remains unaffected by the Read 1s All Blocks comma...

Page 649: ...value 8 Program Once byte 4 value index 0x10 0x13 9 Program Once byte 5 value index 0x10 0x13 10 Program Once byte 6 value index 0x10 0x13 11 Program Once byte 7 value index 0x10 0x13 After clearing...

Page 650: ...ogram Once byte 6 value index 0x10 0x13 11 Program Once byte 7 value index 0x10 0x13 After clearing CCIF to launch the Program Once command the flash memory module first verifies that the selected rec...

Page 651: ...field see Flash Configuration Field Description are erased by the Erase All Blocks command If the erase verify fails the FSTAT MGSTAT0 bit is set The CCIF flag is set after the Erase All Blocks operat...

Page 652: ...FCNFG ERSAREQ bit is cleared once the operation completes and the normal FSTAT error reporting is available as described in Erase All Blocks Command 29 4 11 10 Verify Backdoor Access Key Command The V...

Page 653: ...door Access Key command fails with an access error The CCIF flag is set after the Verify Backdoor Access Key operation completes Table 29 69 Verify Backdoor Access Key Command Error Handling Error Con...

Page 654: ...the Security State The security state out of reset can be permanently changed by programming the security byte of the flash configuration field This assumes that you are starting from a mode where the...

Page 655: ...kdoor Access Key command A reset of the chip is the only method to re enable the Verify Backdoor Access Key command when a comparison fails After the backdoor keys have been correctly matched the chip...

Page 656: ...rked by setting CCIF which enables flash user commands If a reset occurs while any flash command is in progress that command is immediately aborted The state of the word being programmed or the sector...

Page 657: ...e that enables In System Programming ISP of flash memory contents in a 32 bit general purpose microcontroller Memory contents can be read erased programmed from an external source in a format that is...

Page 658: ...ollowing features Serial interface that is compatible with a subset of the SPI format Ability to read erase and program flash memory Ability to reset the microcontroller allowing it to boot from the f...

Page 659: ...ntents of the flash memory The serial data out from the EzPort is tri stated unless data is being driven This allows the signal to be shared among several different EzPort or compatible devices in par...

Page 660: ...D is the serial data in for data transfers EZP_D is registered on the rising edge of EZP_CK All commands addresses and data are shifted in most significant bit first When the EzPort is driving output...

Page 661: ...mber of data bytes programmed must be a multiple of 4 5 Bulk Erase is accepted when security is set and only when the BEDIS status field is not set 6 The flash will be in NVM Special mode restricting...

Page 662: ...0 EZP_CK EZP_CS EZP_D EZP_Q Figure 30 4 Read Status Register command sequence The Read Status Register RDSR command returns the contents of the EzPort status register Table 30 3 EzPort status register...

Page 663: ...sociated with the command 0 Disables the following write command 1 Enables the following write command 2 BEDIS Bulk erase disable Indicates whether bulk erase BE is disabled when flash is secure 0 BE...

Page 664: ...flash memory regions returns unknown data See Flash memory map for EzPort access For this command to return the correct data the EzPort clock EZP_CK must run at the internal system clock divided by ei...

Page 665: ...ter the command word and must be a 32 bit aligned address with the two LSBs being zero As data is shifted in the EzPort buffers the data in System RAM before sequentially moving the data into flash us...

Page 666: ...not accepted if the WEF WIP or FS field is set or if the WEN field is not set in the EzPort status register 30 3 1 8 Bulk Erase CMD 7 0 0xC7 EZP_CK EZP_CS EZP_D EZP_Q Figure 30 9 Bulk Erase command se...

Page 667: ...s not accepted if the WIP field is set in the EzPort status register 30 3 1 10 Write FCCOB Registers CMD 7 0 0xBA FCCOB_0 7 0 FCCOB_1 7 0 FCCOB_B 7 0 EZP_CK EZP_CS EZP_D EZP_Q Figure 30 11 Write FCCOB...

Page 668: ...s of the flash common command object registers After receiving the command EzPort waits for one dummy byte of data before returning FCCOB register data starting at FCCOB 0 and ending with FCCOB B This...

Page 669: ...Access Valid start address Size Flash block Valid commands 0x0000_0000 See device s chip configuration details Flash READ FAST_READ SP SE BE Chapter 30 EzPort K22F Sub Family Reference Manual Rev 3 7...

Page 670: ...Flash memory map for EzPort access K22F Sub Family Reference Manual Rev 3 7 2014 670 Freescale Semiconductor Inc...

Page 671: ...RC module include Hardware CRC generator circuit using a 16 bit or 32 bit programmable shift register Programmable initial seed value and polynomial Option to transpose input data or output data the C...

Page 672: ...ny CRC calculation in progress stops when the MCU enters a low power mode that disables the module clock It resumes after the clock is enabled or via the system reset for exiting the low power mode Cl...

Page 673: ...1 0 R HU HL LU LL W Reset 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 CRC_DATA field descriptions Field Description 31 24 HU CRC High Upper Byte In 16 bit CRC mode CTRL TCRC is 0...

Page 674: ...l Half word Writable and readable in 32 bit CRC mode CTRL TCRC is 1 This field is not writable in 16 bit CRC mode CTRL TCRC is 0 15 0 LOW Low Polynominal Half word Writable and readable in both 32 bit...

Page 675: ...ransposed 27 Reserved This field is reserved This read only field is reserved and always has the value 0 26 FXOR Complement Read Of CRC Data Register Some CRC protocols require the final checksum to b...

Page 676: ...To compute a 16 bit CRC 1 Clear CRC_CTRL TCRC to enable 16 bit CRC mode 2 Program the transpose and complement options in the CTRL register as required for the CRC calculation See Transpose feature an...

Page 677: ...RC result complement for details 31 3 3 Transpose feature By default the transpose feature is not enabled However some CRC standards require the input data and or the final checksum to be transposed T...

Page 678: ...5 Transpose type 01 3 CTRL TOT or CTRL TOTR is 10 Both bits in bytes and bytes are transposed reg 31 0 becomes reg 0 7 reg 8 15 reg 16 23 reg 24 31 31 31 0 0 Figure 31 6 Transpose type 10 4 CTRL TOT o...

Page 679: ...transposition resides in the CRC HU HL fields The user software must account for this situation when reading the 16 bit CRC result so reading 32 bits is preferred 31 3 4 CRC result complement When CTR...

Page 680: ...Functional description K22F Sub Family Reference Manual Rev 3 7 2014 680 Freescale Semiconductor Inc...

Page 681: ...means of generating the required entropy needed to create random data The random words generated by RNGA are loaded into an output register OR RNGA is designed to generate an error interrupt if not m...

Page 682: ...entropy can be used along with RNGA to generate the seed to the pseudorandom algorithm The more random sources combined to create the seed the better The following is a list of sources that can be eas...

Page 683: ...8 RNGA Entropy Register RNG_ER 32 W always reads 0 0000_0000h 32 3 3 687 4002_900C RNGA Output Register RNG_OR 32 R 0000_0000h 32 3 4 687 32 3 1 RNGA Control Register RNG_CR Controls the operation of...

Page 684: ...r interrupt to the interrupt controller when an OR underflow condition occurs An OR underflow condition occurs when you read OR RANDOUT and SR OREG_LVL 0 See the Output Register OR description 0 Not m...

Page 685: ...23 16 OREG_SIZE Output Register Size Indicates the size of the Output OR register in terms of the number of 32 bit random data words it can hold 1 One word this value is fixed 15 8 OREG_LVL Output Re...

Page 686: ...condition has occurred since you last read this register SR or RNGA was reset regardless of whether the error interrupt is masked CR INTM An OR underflow condition occurs when you read OR RANDOUT and...

Page 687: ...its pseudorandom algorithm NOTE Specifying a value for this field is optional but recommended You can write to this field at any time during operation 32 3 4 RNGA Output Register RNG_OR Stores a rand...

Page 688: ...control signals Figure 32 5 RNGA block diagram 32 4 1 Output OR register The Output OR register provides temporary storage for random data generated by the core engine control logic The Status SR regi...

Page 689: ...new random data word If SR OREG_LVL 0 then the control block loads the new random data into OR and set SR OREG_LVL 1 else the new data is discarded 32 4 2 2 Core engine The core engine block contains...

Page 690: ...For application information see Overview Initialization application information K22F Sub Family Reference Manual Rev 3 7 2014 690 Freescale Semiconductor Inc...

Page 691: ...e 33 1 1 Features Following are the features of the ADC module Linear successive approximation algorithm with up to 16 bit resolution Up to four pairs of differential and 24 single ended external anal...

Page 692: ...t the clock Selectable hardware conversion trigger with hardware channel select Automatic compare with interrupt for less than greater than or equal to within range or out of range programmable value...

Page 693: ...onversion trigger control Clock divide Control sequencer Bus clock SAR converter Compare logic Offset subtractor Averager Formatting ADLSMP ADLSTS ADLPC ADHSC initialize sample convert transfer abort...

Page 694: ...cted internally to VSS If externally available connect the VSSA pin to the same voltage potential as VSS 33 2 3 Voltage Reference Select VREFSH and VREFSL are the high and low reference voltages for t...

Page 695: ...ed as single ended inputs if SC1n DIFF is low In certain MCU configurations some DADMx inputs may also be used as single ended inputs if SC1n DIFF is low See the chip configuration chapter for ADC con...

Page 696: ...alibration Value Register ADC1_CLMD 32 R W 0000_000Ah 33 3 18 714 4002_7058 ADC Minus Side General Calibration Value Register ADC1_CLMS 32 R W 0000_0020h 33 3 19 714 4002_705C ADC Minus Side General C...

Page 697: ...4C ADC Plus Side General Calibration Value Register ADC0_CLP0 32 R W 0000_0020h 33 3 17 713 4003_B054 ADC Minus Side General Calibration Value Register ADC0_CLMD 32 R W 0000_000Ah 33 3 18 714 4003_B05...

Page 698: ...n all 1s Writing any of the SC1n registers while that specific SC1n register is actively controlling a conversion aborts the current conversion None of the SC1B SC1n registers are used for software tr...

Page 699: ...ions in the bitfield setting descriptions might not be available for your device For the actual ADC channel assignments for your device see the Chip Configuration details The successive approximation...

Page 700: ...ed 11001 Reserved 11010 When DIFF 0 Temp Sensor single ended is selected as input when DIFF 1 Temp Sensor differential is selected as input 11011 When DIFF 0 Bandgap single ended is selected as input...

Page 701: ...long sample time select bits ADLSTS 1 0 can select the extent of the long sample time 0 Short sample time 1 Long sample time 3 2 MODE Conversion mode selection Selects the ADC resolution mode 00 When...

Page 702: ...ock Output Enable Enables the asynchronous clock source and the clock source output regardless of the conversion and status of CFG1 ADICLK Based on MCU configuration the asynchronous clock may be used...

Page 703: ...ry status and channel control register there is a corresponding data result register Unused bits in R n are cleared in unsigned right aligned modes and carry the sign bit MSB in sign extended 2 s comp...

Page 704: ...ata result 33 3 5 Compare Value Registers ADCx_CVn The Compare Value Registers CV1 and CV2 contain a compare value used to compare the conversion result when the compare function is enabled that is SC...

Page 705: ...Address Base address 20h offset Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R 0 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 ADACT ADTRG ACFE ACFGT ACR...

Page 706: ...de range not inclusive functionality based on the values placed in CV1 and CV2 1 Configures greater than or equal to threshold outside and inside ranges inclusive functionality based on the values pla...

Page 707: ...8 7 6 5 4 3 2 1 0 R 0 CAL CALF 0 ADCO AVGE AVGS W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ADCx_SC3 field descriptions Field Description 31 8 Reserved This field is reserved This read only field is reser...

Page 708: ...only field is reserved and always has the value 0 3 ADCO Continuous Conversion Enable Enables continuous conversions 0 One conversion or one set of conversions if the hardware average function is ena...

Page 709: ...on 31 16 Reserved This field is reserved This read only field is reserved and always has the value 0 15 0 OFS Offset Error Correction Value 33 3 9 ADC Plus Side Gain Register ADCx_PG The Plus Side Gai...

Page 710: ...14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 MG W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 ADCx_MG field descriptions Field Description 31 16 Reserved This field is reserved Thi...

Page 711: ...22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 CLPS W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 ADCx_CLPS field descriptions Field Description 31 6 Reserve...

Page 712: ...n 31 9 Reserved This field is reserved This read only field is reserved and always has the value 0 8 0 CLP3 Calibration Value Calibration Value 33 3 15 ADC Plus Side General Calibration Value Register...

Page 713: ...field is reserved and always has the value 0 6 0 CLP1 Calibration Value Calibration Value 33 3 17 ADC Plus Side General Calibration Value Register ADCx_CLP0 For more information see CLPD register des...

Page 714: ...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 ADCx_CLMD field descriptions Field Description 31 6 Reserved This field is reserved This read only field is reserved and always has the...

Page 715: ...LM4 Calibration Value Calibration Value 33 3 21 ADC Minus Side General Calibration Value Register ADCx_CLM3 For more information see CLMD register description Address Base address 60h offset Bit 31 30...

Page 716: ...0 CLM2 Calibration Value Calibration Value 33 3 23 ADC Minus Side General Calibration Value Register ADCx_CLM1 For more information see CLMD register description Address Base address 68h offset Bit 31...

Page 717: ...output enable is disabled or CFG2 ADACKEN 0 the module is in its lowest power state The ADC can perform an analog to digital conversion on any of the software selectable channels All modes perform con...

Page 718: ...clock is generated from a clock source within the ADC module When the ADACK clock source is selected it is not required to be active prior to conversion start When it is selected and it is not active...

Page 719: ...vailable and hardware trigger is enabled that is SC2 ADTRG 1 a conversion is initiated on the rising edge of ADHWT after a hardware trigger select event that is ADHWTSn has occurred If a conversion is...

Page 720: ...y CFG1 MODE and SC1n DIFF as shown in the description of CFG1 MODE Conversions can be initiated by a software or hardware trigger In addition the ADC module can be configured for Low power operation L...

Page 721: ...ered operation conversions begin after SC1A is written In hardware triggered operation conversions begin after a hardware trigger If continuous conversions are also enabled a new set of conversions to...

Page 722: ...Stop mode with ADACK or Alternate Clock Sources not enabled When a conversion is aborted the contents of the data registers Rn are not altered The data registers continue to be the values transferred...

Page 723: ...onfiguration that is CFG2 ADHSC The frequency of the conversion clock that is fADCK CFG2 ADHSC is used to configure a higher clock input frequency This will allow faster overall conversion times To me...

Page 724: ...dder SFCAdder 1 x 0x 10 3 ADCK cycles 5 bus clock cycles 1 1 11 3 ADCK cycles 5 bus clock cycles1 1 0 11 5 s 3 ADCK cycles 5 bus clock cycles 0 x 0x 10 5 ADCK cycles 5 bus clock cycles 0 1 11 5 ADCK c...

Page 725: ...1 2 ADCK cycles Note The ADCK frequency must be between fADCK minimum and fADCK maximum to meet ADC specifications 33 4 4 6 Conversion time examples The following examples use the Figure 33 92 and the...

Page 726: ...uration A configuration for long ADC conversion is 16 bit differential mode with the bus clock selected as the input clock source The input clock divide by 8 ratio selected Bus frequency of 8 MHz Long...

Page 727: ...s 5 bus clock cycles AverageNum 1 BCT 17 ADCK cycles LSTAdder 0 ADCK cycles HSCAdder 2 The resulting conversion time is generated using the parameters listed in in the preceding table Therefore for bu...

Page 728: ...e input is sampled and converted the compare values in CV1 and CV2 are used as described in the following table There are six Compare modes as shown in the following table Table 33 112 Compare modes S...

Page 729: ...hile the MCU is in Wait or Normal Stop modes The ADC interrupt wakes the MCU when the compare condition is met 33 4 6 Calibration function The ADC contains a self calibration function that is required...

Page 730: ...ear and SC3 CALF to set At the end of a calibration sequence SC1n COCO will be set SC1n AIEN can be used to allow an interrupt to occur at the end of a calibration sequence At the end of the calibrati...

Page 731: ...de of operation The formatting of the OFS is different from the data result register Rn to preserve the resolution of the calibration value regardless of the conversion mode selected Lower order bits...

Page 732: ...user defined offset For applications that may change the offset repeatedly during operation store the initial offset calibration value in flash so it can be recovered and added to any user offset adju...

Page 733: ...s are available as conversion clock sources while in Wait mode The use of ALTCLK as the conversion clock source in Wait is dependent on the definition of ALTCLK for this MCU See the Chip Configuration...

Page 734: ...to wake the MCU from Normal Stop mode if the respective ADC interrupt is enabled that is when SC1n AIEN 1 The result register Rn will contain the data from the first completed conversion that occurre...

Page 735: ...to complete conversions an initialization procedure must be performed A typical sequence is 1 Calibrate the ADC by following the calibration instructions in Calibration function 2 Update CFG to select...

Page 736: ...ACT 0 Flag indicates if a conversion is in progress Bit 6 ADTRG 0 Software trigger selected Bit 5 ACFE 0 Compare function disabled Bit 4 ACFGT 0 Not used in this example Bit 3 ACREN 0 Compare range di...

Page 737: ...edded control applications requiring an ADC For guidance on selecting optimum external component values and converter parameters see AN4373 Cookbook for SAR ADC Measurements 33 6 1 External pins and r...

Page 738: ...ference The two pairs are external VREFH and VREFL and alternate VALTH and VALTL These voltage references are selected using SC2 REFSEL The alternate voltage reference pair VALTH and VALTL may select...

Page 739: ...tween VREFH and VREFL If the input is equal to or exceeds VREFH the converter circuit converts the signal to 0xFFF which is full scale 12 bit representation 0x3FF which is full scale 10 bit representa...

Page 740: ...it mode 12 in 12 bit mode or 16 in 16 bit mode 33 6 2 3 Noise induced errors System noise that occurs during the sample or conversion process can affect the accuracy of the conversion The ADC accuracy...

Page 741: ...LSB one time error Reduce the effect of synchronous noise by operating off the asynchronous clock that is ADACK and averaging Noise that is synchronous to ADCK cannot be averaged out 33 6 2 4 Code wi...

Page 742: ...al non linearity DNL This error is defined as the worst case difference between the actual code width and the ideal code width for all conversions Integral non linearity INL This error is defined as t...

Page 743: ...is defined as when except for code jitter the converter converts to a lower code for a higher input voltage Missing codes Missing codes are those values never converted for any input value In 8 bit o...

Page 744: ...Application information K22F Sub Family Reference Manual Rev 3 7 2014 744 Freescale Semiconductor Inc...

Page 745: ...ull range of the supply voltage The 6 bit DAC is 64 tap resistor ladder network which provides a selectable voltage reference for applications where voltage reference is needed The 64 tap resistor lad...

Page 746: ...ed for internal functions Two software selectable performance levels Shorter propagation delay at the expense of higher power Low power with longer propagation delay DMA transfer support A comparison...

Page 747: ...ver the entire supply range 34 1 4 CMP DAC and ANMUX diagram The following figure shows the block diagram for the High Speed Comparator DAC and ANMUX modules Chapter 34 Comparator CMP K22F Sub Family...

Page 748: ...0 Reference Input 1 Reference Input 2 Reference Input 3 Reference Input 4 Reference Input 5 Reference Input 6 INP INM Sample input Figure 34 1 CMP DAC and ANMUX block diagram 34 1 5 CMP block diagram...

Page 749: ...WE 1 the comparator output will be sampled on every bus clock when WINDOW 1 to generate COUTA Sampling does NOT occur when WINDOW 0 The Filter block is bypassed when not in use The Filter block acts a...

Page 750: ...05 MUX Control Register CMP0_MUXCR 8 R W 00h 34 2 6 755 4007_3008 CMP Control Register 0 CMP1_CR0 8 R W 00h 34 2 1 750 4007_3009 CMP Control Register 1 CMP1_CR1 8 R W 00h 34 2 2 751 4007_300A CMP Filt...

Page 751: ...his read only field is reserved and always has the value 0 1 0 HYSTCTR Comparator hard block hysteresis control Defines the programmable hysteresis level The hysteresis values associated with each lev...

Page 752: ...ion delay and lower current consumption 1 High Speed HS Comparison mode selected In this mode CMP has faster output propagation delay and higher current consumption 3 INV Comparator INVERT Allows sele...

Page 753: ...s field has no effect when CR1 SE 1 In that case the external SAMPLE signal is used to determine the sampling period 34 2 4 CMP Status and Control Register CMPx_SCR Address Base address 3h offset Bit...

Page 754: ...ing edge on COUT has occurred 1 CFF Analog Comparator Flag Falling Detects a falling edge on COUT when set during normal operation CFF is cleared by writing 1 to it During Stop modes CFF is level sens...

Page 755: ...it can be programmed to zero only This field is reserved 6 Reserved This field is reserved This read only field is reserved and always has the value 0 5 3 PSEL Plus Input Mux Control Determines which...

Page 756: ...le to assert an interrupt to the processor SCR CFF is set on a falling edge and SCR CFR is set on rising edge of the comparator output The optionally filtered CMPO can be read directly through SCR COU...

Page 757: ...e s 3A 3B 3B 1 0 0 0x01 0x00 4A 1 0 1 0x01 X Sampled Filtered mode See the Sampled Filtered mode s 4A 4B 4B 1 0 0 0x01 0x00 5A 1 1 0 0x00 X Windowed mode Comparator output is sampled on every rising b...

Page 758: ...1 Disabled mode 1 In Disabled mode the analog comparator is non functional and consumes no power CMPO is 0 in this mode 34 3 1 2 Continuous mode s 2A 2B IRQ Internal bus INP INM FILTER_CNT INV COUT C...

Page 759: ...ed mode s 3A 3B IRQ INP INM FILTER_CNT INV COUT COUT OPE SE CMPO to PAD COUTA 1 WE 0 SE 1 CGMUX COS FILT_PER 1 0 FILT_PER COS 0x01 IER F CFR F WINDOW SAMPLE 1 0 EN PMODE HYSTCTR 1 0 divided bus clock...

Page 760: ...s clock Internal bus Polarity select Window control Filter block Interrupt control To other SOC functions Clock prescaler Figure 34 23 Sampled Non Filtered 3B sampling interval internally derived 34 3...

Page 761: ...MPLE 1 0 EN PMODE HYSTCTR 1 0 divided bus clock CMPO 0x01 Internal bus Polarity select Window control Filter block Interrupt control Clock prescaler To other SOC functions Figure 34 24 Sampled Filtere...

Page 762: ...that now CR0 FILTER_CNT 1 which activates filter operation 34 3 1 5 Windowed mode s 5A 5B The following figure illustrates comparator operation in the Windowed mode ignoring latency of the analog comp...

Page 763: ...ck COS 0x01 IER F CFR F WINDOW SAMPLE Polarity select Window control Filter block Interrupt control divided bus clock Clock prescaler CMPO Internal bus To other SOC functions Figure 34 27 Windowed mod...

Page 764: ...tion Depending upon the sampling rate and window placement COUT may not see zero crossing events detected by the analog comparator Sampling period and or window placement must be carefully considered...

Page 765: ...ched value is held when WINDOW 0 IRQ EN PMODE HYSCTR 1 0 INP INM FILTER_CNT INV COUT COUT OPE SE CMPO to PAD COUTA 0 1 WE 1 0 SE 0 CGMUX COS FILT_PER 0 1 FILT_PER bus clock COS IER F CFR F WINDOW SAMP...

Page 766: ...e CMP output pin is latched and does not reflect the compare output state The positive and negative input voltage can be supplied from external pins or the DAC output The MCU can be brought out of the...

Page 767: ...and the amount of filtering is dependent on user requirements Filtering can become more useful in the absence of an external hysteresis circuit Without external hysteresis high frequency oscillations...

Page 768: ...NT The values of FPR FILT_PER or SAMPLE period and CR0 FILTER_CNT must also be traded off against the desire for minimal latency in recognizing actual comparator output transitions The probability of...

Page 769: ...hen SCR IER and SCR CFR are set The interrupt request is asserted SCR IEF and SCR CFF are set The interrupt request is asserted SCR IER and SCR CFR are cleared for a rising edge interrupt The interrup...

Page 770: ...ils 34 6 CMP Asynchronous DMA support The comparator can remain functional in STOP modes When DMA support is enabled by setting SCR DMAEN and the interrupt is enabled by setting SCR IER SCR IEF or bot...

Page 771: ...in2 The module can be powered down or disabled when not in use When in Disabled mode DACO is connected to the analog ground VOSEL 5 0 DACO MUX MUX DACEN Vin VRSEL Vin1 Vin2 Figure 34 30 6 bit DAC bloc...

Page 772: ...orresponding to the chip wide peripheral reset 34 10 DAC clocks This module has a single clock input the bus clock 34 11 DAC interrupts This module has no interrupts DAC resets K22F Sub Family Referen...

Page 773: ...parator op amps or ADC 35 2 Features The features of the DAC module include On chip programmable reference generator output The voltage output range is from 1 4096 Vin to Vin and the step is 1 4096 Vi...

Page 774: ...CBFRPBF DACBBIEN OR dac_interrupt DACTRGSE LPEN DACRFS DACREF_1 Vin Vo Data Buffer Figure 35 1 DAC block diagram 35 4 Memory map register definition The DAC has registers to control analog comparator...

Page 775: ...8 R W 00h 35 4 1 776 4003_F011 DAC Data High Register DAC0_DAT8H 8 R W 00h 35 4 2 776 4003_F012 DAC Data Low Register DAC0_DAT9L 8 R W 00h 35 4 1 776 4003_F013 DAC Data High Register DAC0_DAT9H 8 R W...

Page 776: ...DAC Data High Register DACx_DATnH Address 4003_F000h base 1h offset 2d i where i 0d to 15d Bit 7 6 5 4 3 2 1 0 Read 0 DATA1 Write Reset 0 0 0 0 0 0 0 0 DACx_DATnH field descriptions Field Description...

Page 777: ...evel 1 The DAC buffer read pointer has reached the watermark level 1 DACBFRPTF DAC Buffer Read Pointer Top Position Flag In FIFO mode it is FIFO nearly empty flag It is set when only one data remains...

Page 778: ...If DAC software trigger is selected and buffer is enabled writing 1 to this field will advance the buffer read pointer once 0 The DAC soft trigger is not valid 1 The DAC soft trigger is valid 3 LPEN...

Page 779: ...it DACBUP SR DACBFWMF will be set This allows user configuration of the watermark interrupt In FIFO mode it is FIFO watermark select field 00 In normal mode 1 word In FIFO mode 2 or less than 2 data r...

Page 780: ...O status is empty It is writable and user can configure it to the same address to reset FIFO as empty 35 5 Functional description The 12 bit DAC module can select one of the two reference inputs DACRE...

Page 781: ...scribes the different modes of data buffer operation for the DAC module Table 35 79 Modes of DAC data buffer operation Modes Description Buffer Normal mode This is the default mode The buffer works as...

Page 782: ...Only both byte lanes are written will the write pointer increase User need to make sure 8bit access happened in pair and both upper lower bytes are written There is no requirement on which byte write...

Page 783: ...the DAC module continues to operate in Normal Stop mode and the output voltage will hold the value before stop In low power stop modes the DAC is fully shut down NOTE The assignment of module modes t...

Page 784: ...Functional description K22F Sub Family Reference Manual Rev 3 7 2014 784 Freescale Semiconductor Inc...

Page 785: ...trimmed in 0 5 mV steps The VREF can be used in applications to provide a reference voltage to external devices or used internally as a reference to analog peripherals such as the ADC DAC or CMP The v...

Page 786: ...s ADCs and DACs Refer to the chip configuration details for a description of these options The reference voltage is output on a dedicated output pin when the VREF is enabled The Voltage Reference outp...

Page 787: ...of operation Having the VREF regulator enabled does increase current consumption In very low power modes it may be desirable to disable the VREF regulator to minimize current consumption Note however...

Page 788: ...set will be minimized This bit is set during factory trimming of the VREF voltage This bit should be written to 1 to achieve the performance stated in the data sheet If the internal voltage regulator...

Page 789: ...e is disabled 1 The module is enabled 6 REGEN Regulator enable This bit is used to enable the internal 1 75 V regulator to produce a constant internal voltage supply in order to reduce the sensitivity...

Page 790: ...rved 36 3 Functional Description The Voltage Reference is a bandgap buffer system Unity gain amplifiers are used The VREF_OUT signal can be used by both internal and external peripherals in low and hi...

Page 791: ...nd there is no buffered voltage output The Voltage Reference is in standby mode If this mode is first selected and the low power or high power buffer mode is subsequently enabled there will be a delay...

Page 792: ...n you must wait the longer of Tstup or until SC VREFST 1 when the chop oscillator is not enabled If the chop oscillator is being used you must wait the time specified by Tchop_osc_stup chop oscillator...

Page 793: ...MODE_LV will not clear SC VREFST but there will be some startup time before the output voltage at the VREF_OUT pin has settled This is the buffer start up delay Tstup and the value is specified in the...

Page 794: ...Initialization Application Information K22F Sub Family Reference Manual Rev 3 7 2014 794 Freescale Semiconductor Inc...

Page 795: ...DB can optionally provide pulse outputs Pulse Out s that are used as the sample window in the CMP block 37 1 1 Features Up to 15 trigger input sources and one software trigger source Up to 8 configura...

Page 796: ...Implementation In this section the following letters refer to the number of output triggers N Total available number of PDB channels n PDB channel number valid from 0 to N 1 M Total available pre tri...

Page 797: ...ormation 37 1 4 DAC External Trigger Input Connections The implementation of DAC external trigger inputs is chip specific See the chip configuration information for details 37 1 5 Block diagram This d...

Page 798: ...rrupt TOEx POyDLY2 POyDLY1 Pulse Generation Pulse Out y PDBPOEN y Pulse Out y DAC interval trigger x From trigger mux TOEx DAC external trigger input Control logic PDB counter DAC interval counter x F...

Page 799: ...he modulus register and the counting is restarted This enables a continuous stream of pre triggers trigger outputs as a result of a single trigger input event Enabled Bypassed The pre trigger and trig...

Page 800: ...R W 0000_0000h 37 3 8 807 4003_6038 Channel n Control register 1 PDB0_CH1C1 32 R W 0000_0000h 37 3 5 805 4003_603C Channel n Status register PDB0_CH1S 32 R W 0000_0000h 37 3 6 806 4003_6040 Channel n...

Page 801: ...ir buffers immediately after 1 is written to LDOK 01 The internal registers are loaded with the values from their buffers when the PDB counter reaches the MOD register value after 1 is written to LDOK...

Page 802: ...factor selected by MULT 101 Counting uses the peripheral clock divided by 32 times of the multiplication factor selected by MULT 110 Counting uses the peripheral clock divided by 64 times of the mult...

Page 803: ...DB operation in Continuous mode 0 LDOK Load OK Writing 1 to this bit updates the internal registers of MOD IDLY CHnDLYm DACINTx and POyDLY with the values written to their buffers The MOD IDLY CHnDLYm...

Page 804: ...eserved This field is reserved This read only field is reserved and always has the value 0 15 0 CNT PDB Counter Contains the current value of the counter 37 3 4 Interrupt Delay register PDBx_IDLY Addr...

Page 805: ...uration and results registers Application code must only enable the back to back operation of the PDB pre triggers at the leading of the back to back connection chain 0 PDB channel s corresponding pre...

Page 806: ...for a conversion by one pre trigger from PDB channel n When one conversion which is triggered by one of the pre triggers from PDB channel n is in progress new trigger from PDB channel s corresponding...

Page 807: ...50h offset 8d i where i 0d to 0d Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R 0 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 EXT TOE W Reset 0 0 0 0 0...

Page 808: ...DAC interval trigger DAC interval trigger triggers DAC 1 0 update when the DAC interval counter is equal to the DACINT Reading these bits returns the value of internal register that is effective for t...

Page 809: ...y 2 value for the PDB Pulse Out Pulse Out goes low when the PDB counter is equal to the DLY2 Reading this field returns the value of internal register that is effective for the current PDB cycle 37 4...

Page 810: ...in the following diagram show the pre trigger and trigger outputs of PDB channel n The delays can be independently set using the CHnDLYm registers and the pre triggers can be enabled or disabled in CH...

Page 811: ...value set in IDLY register the SC PDBIF flag is set A PDB interrupt can be generated if SC PDBIE is set and SC DMAEN is cleared If SC DMAEN is set then the PDB requests a DMA transfer when the SC PDB...

Page 812: ...ized as shown in the table below Table 37 52 Circumstances of update to the delay registers SC LDMOD Update to the delay registers 00 The internal registers are loaded with the values from their buffe...

Page 813: ...pt and PDB sequence error interrupt The following table summarizes the interrupts Table 37 53 PDB interrupt summary Interrupt Flags Enable bit PDB Interrupt SC PDBIF SC PDBIE 1 and SC DMAEN 0 PDB Sequ...

Page 814: ...o 2 then the only values of total peripheral clocks that can be detected are even values if prescaler is set to 4 then the only values of total peripheral clocks that can be decoded as detected are mo...

Page 815: ...HCS08 Timer PWM Module TPM used for many years on Freescale s 8 bit microcontrollers The FlexTimer extends the functionality to meet the demands of motor control digital lighting solutions and power c...

Page 816: ...the same in each FlexTimer All main user access registers are buffered to ease the load on the executing software A number of trigger options exist to determine which registers are updated with this u...

Page 817: ...eneration of an interrupt when the counter overflows The generation of an interrupt when the fault condition is detected Synchronized loading of write buffered FTM registers Write protection for criti...

Page 818: ...k diagram The FTM uses one input output I O pin per channel CHn FTM channel n where n is the channel number 0 7 The following figure shows the FTM structure The central component of the FTM is the 16...

Page 819: ...7V CH6IE CH6F CH1IE CH0IE CH7IE CH7F CH1F CH0F channel 0 interrupt channel 1 interrupt channel 6 interrupt channel 7 interrupt channel 7 match trigger channel 6 output signal channel 6 match trigger c...

Page 820: ...at each FAULTj input may affect all channels selectively since FAULTM 1 0 and FAULTEN control bits are defined for each pair of channels Because there are several FAULTj inputs maximum of 4 for the FT...

Page 821: ...003_8028 Channel n Value FTM0_C3V 32 R W 0000_0000h 38 3 7 832 4003_802C Channel n Status And Control FTM0_C4SC 32 R W 0000_0000h 38 3 6 829 4003_8030 Channel n Value FTM0_C4V 32 R W 0000_0000h 38 3 7...

Page 822: ...Output Control FTM0_SWOCTRL 32 R W 0000_0000h 38 3 26 865 4003_8098 FTM PWM Load FTM0_PWMLOAD 32 R W 0000_0000h 38 3 27 868 4003_9000 Status And Control FTM1_SC 32 R W 0000_0000h 38 3 3 826 4003_9004...

Page 823: ...nels FTM1_COMBINE 32 R W 0000_0000h 38 3 14 842 4003_9068 Deadtime Insertion Control FTM1_DEADTIME 32 R W 0000_0000h 38 3 15 847 4003_906C FTM External Trigger FTM1_EXTTRIG 32 R W 0000_0000h 38 3 16 8...

Page 824: ...7 832 4003_A03C Channel n Status And Control FTM2_C6SC 32 R W 0000_0000h 38 3 6 829 4003_A040 Channel n Value FTM2_C6V 32 R W 0000_0000h 38 3 7 832 4003_A044 Channel n Status And Control FTM2_C7SC 32...

Page 825: ...0000h 38 3 22 860 4003_A088 FTM Fault Input Polarity FTM2_FLTPOL 32 R W 0000_0000h 38 3 23 861 4003_A08C Synchronization Configuration FTM2_SYNCONF 32 R W 0000_0000h 38 3 24 862 4003_A090 FTM Invertin...

Page 826: ...s read only field is reserved and always has the value 0 7 TOF Timer Overflow Flag Set by hardware when the FTM counter passes the value in the MOD register The TOF bit is cleared by reading the SC re...

Page 827: ...effect disables the FTM counter 01 System clock 10 Fixed frequency clock 11 External clock 2 0 PS Prescale Factor Selection Selects one of 8 division factors for the clock source selected by CLKS The...

Page 828: ...he MOD register latches the value into a buffer The MOD register is updated with the value of its write buffer according to Registers updated from write buffers If FTMEN 0 this write coherency mechani...

Page 829: ...Falling Edge Only 11 Capture on Rising or Falling Edge 01 01 Output Compare Toggle Output on match 10 Clear Output on match 11 Set Output on match 1X 10 Edge Aligned PWM High true pulses clear Output...

Page 830: ...ble Detected Edges 0 0 Disabled No edge 0 1 Enabled Rising edge 1 0 Enabled Falling edge 1 1 Enabled Rising and falling edges Address Base address Ch offset 8d i where i 0d to 7d Bit 31 30 29 28 27 26...

Page 831: ...en only when MODE WPDIS 1 4 MSA Channel Mode Select Used for further selections in the channel logic Its functionality is dependent on the channel mode See Table 38 7 This field is write protected It...

Page 832: ...x_CnV field descriptions Field Description 31 16 Reserved This field is reserved This read only field is reserved and always has the value 0 15 0 VAL Channel Value Captured FTM counter value of the in...

Page 833: ...y one read of STATUS All CHnF bits can be cleared by reading STATUS followed by writing 0x00 to STATUS Hardware sets the individual channel flags when an event occurs on the channel CHnF is cleared by...

Page 834: ...the register description 0 No channel event has occurred 1 A channel event has occurred 5 CH5F Channel 5 Flag See the register description 0 No channel event has occurred 1 A channel event has occurr...

Page 835: ...l enable bit for FTM specific features and the control bits used to configure Fault control mode and interrupt Capture Test mode PWM synchronization Write protection Channel output initialization Thes...

Page 836: ...MOD CnV OUTMASK and FTM counter synchronization See PWM synchronization The PWMSYNC bit configures the synchronization when SYNCMODE is 0 0 No restrictions Software and hardware triggers can be used b...

Page 837: ...dware or software triggers but not both at the same time otherwise unpredictable behavior is likely to happen The selection of the loading point CNTMAX and CNTMIN bits is intended to provide the updat...

Page 838: ...1 input signal 0 Trigger is disabled 1 Trigger is enabled 4 TRIG0 PWM Synchronization Hardware Trigger 0 Enables hardware trigger 0 to the PWM synchronization Hardware trigger 0 occurs when a rising...

Page 839: ...ding point is enabled 38 3 12 Initial State For Channels Output FTMx_OUTINIT Address Base address 5Ch offset Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R 0 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0...

Page 840: ...Output Initialization Value Selects the value that is forced into the channel output when the initialization occurs 0 The initialization value is 0 1 The initialization value is 1 1 CH1OI Channel 1 O...

Page 841: ...lly 1 Channel output is masked It is forced to its inactive state 6 CH6OM Channel 6 Output Mask Defines if the channel output is masked or unmasked 0 Channel output is not masked It continues to opera...

Page 842: ...continues to operate normally 1 Channel output is masked It is forced to its inactive state 38 3 14 Function For Linked Channels FTMx_COMBINE This register contains the control bits used to configure...

Page 843: ...configuration of the dual edge capture bits This field applies only when DECAPEN 1 DECAP bit is cleared automatically by hardware if dual edge capture one shot mode is selected and when the capture o...

Page 844: ...only when MODE WPDIS 1 0 The deadtime insertion in this pair of channels is disabled 1 The deadtime insertion in this pair of channels is enabled 19 DECAP2 Dual Edge Capture Mode Captures For n 4 Enab...

Page 845: ...registers C n V and C n 1 V 0 The PWM synchronization in this pair of channels is disabled 1 The PWM synchronization in this pair of channels is enabled 12 DTEN1 Deadtime Enable For n 2 Enables the de...

Page 846: ...rite protected It can be written only when MODE WPDIS 1 0 The fault control in this pair of channels is disabled 1 The fault control in this pair of channels is enabled 5 SYNCEN0 Synchronization Enabl...

Page 847: ...ombine feature for channels n and n 1 This field is write protected It can be written only when MODE WPDIS 1 0 Channels n and n 1 are independent 1 Channels n and n 1 are combined 38 3 15 Deadtime Ins...

Page 848: ...to a possible 63 counts This field is write protected It can be written only when MODE WPDIS 1 38 3 16 FTM External Trigger FTMx_EXTTRIG This register Indicates when a channel trigger was generated E...

Page 849: ...ated 6 INITTRIGEN Initialization Trigger Enable Enables the generation of the trigger when the FTM counter is equal to the CNTIN register 0 The generation of initialization trigger is disabled 1 The g...

Page 850: ...2TRIG Channel 2 Trigger Enable Enables the generation of the channel trigger when the FTM counter is equal to the CnV register 0 The generation of the channel trigger is disabled 1 The generation of t...

Page 851: ...4 POL4 Channel 4 Polarity Defines the polarity of the channel output This field is write protected It can be written only when MODE WPDIS 1 0 The channel polarity is active high 1 The channel polarity...

Page 852: ...8 3 18 Fault Mode Status FTMx_FMS This register contains the fault detection flags write protection enable bit and the logic OR of the enabled fault inputs Address Base address 74h offset Bit 31 30 29...

Page 853: ...the enabled fault inputs is 0 1 The logic OR of the enabled fault inputs is 1 4 Reserved This field is reserved This read only field is reserved and always has the value 0 3 FAULTF3 Fault Detection F...

Page 854: ...ault input 1 A fault condition was detected at the fault input 0 FAULTF0 Fault Detection Flag 0 Set by hardware when fault control is enabled the corresponding fault input is enabled and a fault condi...

Page 855: ...Channel 1 Input Filter Selects the filter value for the channel input The filter is disabled when the value is zero 3 0 CH0FVAL Channel 0 Input Filter Selects the filter value for the channel input T...

Page 856: ...en MODE WPDIS 1 0 Fault input filter is disabled 1 Fault input filter is enabled 5 FFLTR1EN Fault Input 1 Filter Enable Enables the filter for the fault input This field is write protected It can be w...

Page 857: ...only when MODE WPDIS 1 0 Fault input is disabled 1 Fault input is enabled 0 FAULT0EN Fault Input 0 Enable Enables the fault input This field is write protected It can be written only when MODE WPDIS...

Page 858: ...0 0 0 0 FTMx_QDCTRL field descriptions Field Description 31 8 Reserved This field is reserved This read only field is reserved and always has the value 0 7 PHAFLTREN Phase A Input Filter Enable Enable...

Page 859: ...used in the Quadrature Decoder mode 0 Phase A and phase B encoding mode 1 Count and direction encoding mode 2 QUADIR FTM Counter Direction In Quadrature Decoder Mode Indicates the counting direction...

Page 860: ...the value 0 10 GTBEOUT Global Time Base Output Enables the global time base signal generation to other FTMs 0 A global time base signal generation is disabled 1 A global time base signal generation is...

Page 861: ...0 19 18 17 16 R 0 W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 FLT3POL FLT2POL FLT1POL FLT0POL W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FTMx_FLTPOL field descri...

Page 862: ...fault 1 The fault input polarity is active low A 0 at the fault input indicates a fault 38 3 24 Synchronization Configuration FTMx_SYNCONF This register selects the PWM synchronization configuration S...

Page 863: ...has the value 0 12 SWSOC Software output control synchronization is activated by the software trigger 0 The software trigger does not activate the SWOCTRL register synchronization 1 The software trig...

Page 864: ...clock 1 CNTIN register is updated with its buffer value by the PWM synchronization 1 Reserved This field is reserved This read only field is reserved and always has the value 0 0 HWTRIGMODE Hardware T...

Page 865: ...ble 0 Inverting is disabled 1 Inverting is enabled 0 INV0EN Pair Channels 0 Inverting Enable 0 Inverting is disabled 1 Inverting is enabled 38 3 26 FTM Software Output Control FTMx_SWOCTRL This regist...

Page 866: ...tware Output Control Value 0 The software output control forces 0 to the channel output 1 The software output control forces 1 to the channel output 12 CH4OCV Channel 4 Software Output Control Value 0...

Page 867: ...trol Enable 0 The channel output is not affected by software output control 1 The channel output is affected by software output control 3 CH3OC Channel 3 Software Output Control Enable 0 The channel o...

Page 868: ...ved This read only field is reserved and always has the value 0 9 LDOK Load Enable Enables the loading of the MOD CNTIN and CV registers with the values of their write buffers 0 Loading updated values...

Page 869: ...ching process 1 Include the channel in the matching process 1 CH1SEL Channel 1 Select 0 Do not include the channel in the matching process 1 Include the channel in the matching process 0 CH0SEL Channe...

Page 870: ...ble the FTM counter After any MCU reset CLKS 1 0 0 0 so no clock source is selected The CLKS 1 0 bits may be read or written at any time Disabling the FTM counter by writing 0 0 to the CLKS 1 0 bits d...

Page 871: ...ple of the prescaler counter and FTM counter FTM counter 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 3 3 1 1 1 1 1 1 1 1 1 selected input clock prescaler counter FTM counting is up PS 2 0 001 CNTIN 0x0000 MOD 0...

Page 872: ...TOF bit set TOF bit 4 4 3 2 1 4 3 2 1 0 1 2 3 4 0 1 2 3 4 4 3 CNTIN 0xFFFC in two s complement is equal to 4 period of counting MOD CNTIN 0x0001 x period of FTM counter clock Figure 38 168 Example of...

Page 873: ...requirement Any values of CNTIN and MOD that do not satisfy this criteria can result in unpredictable behavior MOD CNTIN is a redundant condition In this case the FTM counter is always equal to MOD an...

Page 874: ...he final value of the count The value of CNTIN is loaded into the FTM counter and the counter increments until the value of MOD is reached at which point the counter is decremented until it returns to...

Page 875: ...In this case 0 CPWM is generated 38 4 3 3 Free running counter If FTMEN 0 and MOD 0x0000 or MOD 0xFFFF the FTM counter is a free running counter In this case the FTM counter runs free from 0x0000 thro...

Page 876: ...the TOF bit is set The NUMTOF 4 0 bits define the number of times that the FTM counter overflow should occur before the TOF bit to be set If NUMTOF 4 0 0x00 then the TOF bit is set at each FTM counte...

Page 877: ...input capture the FTMxCHn pin is an edge sensitive input ELSnB ELSnA control bits determine which edge falling or rising triggers input capture event Note that the maximum frequency for the channel i...

Page 878: ...1 Filter for Input Capture mode The filter function is only available on channels 0 1 2 and 3 First the input signal is synchronized by the system clock Following synchronization the input signal ente...

Page 879: ...put The clock for the counter in the channel input filter is the system clock divided by 4 CHnFVAL 3 0 0010 binary value channel n input after the synchronizer counter filter output system clock divid...

Page 880: ...also are reset 38 4 5 Output Compare mode The Output Compare mode is selected when DECAPEN 0 COMBINE 0 CPWMS 0 and MSnB MSnA 0 1 In Output Compare mode the FTM can generate timed pulses with programma...

Page 881: ...ode when the match clears the channel output channel n output CHnF bit TOF bit CNT MOD 0x0005 CnV 0x0003 counter overflow channel n match counter overflow channel n match counter overflow 0 1 2 3 4 5...

Page 882: ...aches the value in the CnV register the CHnF bit is set and the channel n interrupt is generated if CHnIE 1 however the channel n output is not controlled by FTM If ELSnB ELSnA 1 0 then the channel n...

Page 883: ...s different from zero the following EPWM signals can be generated 0 EPWM signal if CnV CNTIN EPWM signal between 0 and 100 if CNTIN CnV MOD 100 EPWM signal when CNTIN CnV or CnV MOD 38 4 7 Center Alig...

Page 884: ...nB ELSnA 0 0 when the FTM counter reaches the value in the CnV register the CHnF bit is set and the channel n interrupt is generated if CHnIE 1 however the channel n output is not controlled by FTM If...

Page 885: ...do not need to generate a 100 duty cycle CPWM signal This is not a significant limitation because the resulting period is much longer than required for normal applications The CPWM mode must not be u...

Page 886: ...in the generation of the channels n and n 1 output However if ELSnB ELSnA 0 0 then the channel n output is not controlled by FTM and if ELS n 1 B ELS n 1 A 0 0 then the channel n 1 output is not contr...

Page 887: ...ELSnA X 1 MOD C n V CNTIN Figure 38 191 Channel n output if C n V CNTIN and CNTIN C n 1 V MOD FTM counter not fully 100 duty cycle channel n output with ELSnB ELSnA 1 0 not fully 0 duty cycle channel...

Page 888: ...C n V CNTIN and CNTIN C n 1 V MOD and C n 1 V is Almost Equal to MOD FTM counter 0 duty cycle channel n output with ELSnB ELSnA 1 0 100 duty cycle channel n output with ELSnB ELSnA X 1 C n V MOD CNTI...

Page 889: ...hannel n output with ELSnB ELSnA 1 0 channel n output with ELSnB ELSnA X 1 100 duty cycle 0 duty cycle MOD Figure 38 196 Channel n output if C n V C n 1 V CNTIN FTM counter CNTIN channel n output with...

Page 890: ...annel n output if CNTIN C n V MOD and CNTIN C n 1 V MOD and C n V C n 1 V FTM counter C n V channel n output with ELSnB ELSnA 1 0 channel n output with ELSnB ELSnA X 1 0 duty cycle 100 duty cycle MOD...

Page 891: ...n 1 V CNTIN and CNTIN C n V MOD FTM counter channel n output with ELSnB ELSnA 1 0 channel n output with ELSnB ELSnA X 1 100 duty cycle 0 duty cycle MOD C n V C n 1 V CNTIN Figure 38 201 Channel n outp...

Page 892: ...3 Channel n output if C n 1 V MOD and CNTIN C n V MOD 38 4 8 1 Asymmetrical PWM In Combine mode the control of the PWM signal first edge when the channel n match occurs that is FTM counter C n V is in...

Page 893: ...hannel n match Figure 38 204 Channel n 1 output in Complementary mode with ELSnB ELSnA 1 0 FTM counter channel n 1 match channel n 1 output with COMP 1 channel n 1 output with COMP 0 channel n output...

Page 894: ...WMS bit that is If the selected mode is not CPWM then MOD register is updated after MOD register was written and the FTM counter changes from MOD to CNTIN If the FTM counter is at free running counter...

Page 895: ...of the FTM counter the end of the prescaler counting If SYNCEN 1 then CnV register is updated by the C n V and C n 1 V register synchronization If the selected mode is not output compare and SYNCEN 1...

Page 896: ...s written to it NOTE The HWTRIGMODE bit must be 1 only with enhanced PWM synchronization SYNCMODE 1 38 4 11 2 Software trigger A software trigger event occurs when 1 is written to the SYNC SWSYNC bit...

Page 897: ...V In Up counting mode the boundary cycle is defined as when the counter wraps to its initial value CNTIN If in Up down counting mode then the boundary cycle is defined as when the counter turns from d...

Page 898: ...lue This synchronization is enabled if FTMEN 1 The MOD register synchronization can be done by either the enhanced PWM synchronization SYNCMODE 1 or the legacy PWM synchronization SYNCMODE 0 However i...

Page 899: ...wait hardware trigger n HWTRIGMODE bit clear TRIGn bit wait the next selected loading point update MOD with its buffer value update MOD with its buffer value HWRSTCNT bit Figure 38 209 MOD register s...

Page 900: ...er is updated write 1 to TRIG0 bit TRIG0 bit trigger 0 event Figure 38 211 MOD synchronization with SYNCMODE 0 HWTRIGMODE 0 PWMSYNC 0 REINIT 0 and a hardware trigger was used If SYNCMODE 0 PWMSYNC 0 a...

Page 901: ...MSYNC 0 REINIT 1 and a hardware trigger was used If SYNCMODE 0 and PWMSYNC 1 then this synchronization is made on the next selected loading point after the software trigger event takes place The SWSYN...

Page 902: ...nization mechanism is the same as the MOD register synchronization However it is expected that the C n V and C n 1 V registers be synchronized only by the enhanced PWM synchronization SYNCMODE 1 38 4...

Page 903: ...igger n TRIGn bit HWOM bit SWOM bit SWSYNC bit rising edge of system clock update OUTMASK with its buffer value hardware trigger OUTMASK is updated by software trigger OUTMASK is updated by hardware t...

Page 904: ...SWSYNC bit software trigger event Figure 38 216 OUTMASK synchronization with SYNCMODE 0 SYNCHOM 1 PWMSYNC 0 and software trigger was used system clock write 1 to TRIG0 bit TRIG0 bit trigger 0 event O...

Page 905: ...CTRL register synchronization updates the INVCTRL register with its buffer value The INVCTRL register can be updated at each rising edge of system clock INVC 0 or by the enhanced PWM synchronization I...

Page 906: ...bit rising edge of system clock update INVCTRL with its buffer value update INVCTRL with its buffer value HWINVC bit TRIGn bit wait hardware trigger n update INVCTRL with its buffer value HWTRIGMODE...

Page 907: ...OCTRL is updated by hardware trigger enhanced PWM synchronization update SWOCTRL register by PWM synchronization update SWOCTRL register at each rising edge of system clock yes 0 1 0 0 no 1 SWOC bit S...

Page 908: ...el output from transitioning to 1 If no deadtime insertion is selected then the channel n 1 transitions to logical value 1 immediately after the synchronization event occurs synchronization event chan...

Page 909: ...re trigger TRIGn bit 0 0 0 0 0 1 Figure 38 222 FTM counter synchronization flowchart In the case of legacy PWM synchronization the FTM counter synchronization depends on REINIT and PWMSYNC bits accord...

Page 910: ...4 FTM counter synchronization with SYNCMODE 0 HWTRIGMODE 0 REINIT 1 PWMSYNC 0 and a hardware trigger was used If SYNCMODE 0 REINIT 1 and PWMSYNC 1 then this synchronization is made on the next enabled...

Page 911: ...ted the channel n output behavior is changed to force high at the beginning of the PWM period force low at the channel n match and force high at the channel n 1 match See the following figure NOTE cha...

Page 912: ...INVCTRL register synchronization INV m bit channel n output after the inverting channel n 1 output after the inverting INV m bit selects the inverting to the pair channels n and n 1 channel n output...

Page 913: ...n OCV 1 and CH n 1 OCV 0 SWOCTRL register synchronization SWOCTRL register synchronization write to SWOCTRL register write to SWOCTRL register Figure 38 228 Example of software output control in Combi...

Page 914: ...The DTPS 1 0 bits define the prescaler for the system clock and the DTVAL 5 0 bits define the deadtime modulo that is the number of the deadtime prescaler clocks The deadtime delay insertion ensures t...

Page 915: ...e 38 229 Deadtime insertion with ELSnB ELSnA 1 0 POL n 0 and POL n 1 0 FTM counter channel n 1 match channel n output before deadtime insertion channel n 1 output before deadtime insertion channel n o...

Page 916: ...Although in most cases the deadtime delay is not comparable to channels n and n 1 duty cycle the following figures show examples where the deadtime delay is comparable to the duty cycle FTM counter c...

Page 917: ...sk The output mask can be used to force channels output to their inactive state through software For example to control a BLDC motor Any write to the OUTMASK register updates its write buffer The OUTM...

Page 918: ...te 38 4 16 Fault control The fault control is enabled if FAULTM 1 0 0 0 FTM can have up to four fault inputs FAULTnEN bit where n 0 1 2 3 enables the fault input n and FFLTRnEN bit enables the fault i...

Page 919: ...00 and FAULTnEN 1 then the fault input n signal is delayed 3 FFVAL 3 0 rising edges of the system clock that is the FAULTFn bit is set 4 FFVAL 3 0 rising edges of the system clock after a rising edge...

Page 920: ...Automatic fault clearing If the automatic fault clearing is selected FAULTM 1 0 1 1 then the channels output disabled by fault control is again enabled when the fault input signal FAULTIN returns to...

Page 921: ...the fault control with manual fault clearing and POLn 0 NOTE Figure 38 237 Fault control with manual fault clearing 38 4 16 3 Fault inputs polarity control The FLTjPOL bit selects the fault input j po...

Page 922: ...nel n 1 Output 0 0 is forced to zero is forced to zero 0 1 is forced to zero is forced to one 1 0 is forced to one is forced to zero 1 1 is forced to one is forced to one The following table shows the...

Page 923: ...output signal CH n OI CH n 1 OI COMP m INV m EN CH n OC CH n OCV CH n 1 OC CH n 1 OCV DTEN m CH n OM CH n 1 OM FAULTEN m POL n POL n 1 Figure 38 238 Priority of the features used at the generation of...

Page 924: ...TRIG 1 CH4TRIG 1 CH5TRIG 1 the beginning of new PWM cycles MOD FTM counter C5V FTM counter C4V FTM counter C3V FTM counter C2V FTM counter C1V FTM counter C0V CNTIN a b c d Figure 38 239 Channel match...

Page 925: ...ounting achieves the CNTIN register value CPWMS 0 0x04 0x05 0x06 0x00 0x01 0x02 0x03 0x04 0x05 0x06 initialization trigger write to CNT FTM counter system clock CNTIN 0x0000 MOD 0x000F Figure 38 241 I...

Page 926: ...0x24 0x23 0x22 0x21 0x20 initialization trigger Figure 38 244 Initialization trigger is generated if the channel n is in Input Capture mode ICRST 1 and the selected input capture event occurs in the c...

Page 927: ...T 1 CPWMS 0 CNTIN 0x0000 and MOD 0xFFFF FTM channel n configuration input capture mode DECAPEN 0 COMBINE 0 and MSnB MSnA 0 0 0x0300 0x78AC set CAPTEST clear CAPTEST write 0x78AC 0x1056 0x1053 0x1055 0...

Page 928: ...4 24 Dual Edge Capture mode The Dual Edge Capture mode is selected if DECAPEN 1 This mode allows to measure a pulse width or period of the signal on the input of channel n of a channel pair The chann...

Page 929: ...edge by channel n 1 is detected at channel n input In this mode a coherency mechanism ensures coherent data when the C n V and C n 1 V registers are read The only requirement is that C n V must be re...

Page 930: ...s The latest captured values are always available in these registers even after the DECAP bit is cleared In this mode it is possible to clear only the CH n 1 F bit Therefore when the CH n 1 F bit is s...

Page 931: ...r 4 9 11 12 13 14 9 10 7 8 15 16 17 18 19 20 21 22 23 24 25 26 27 28 15 16 19 20 22 24 Problem 1 channel n input 1 set DECAP not clear CH n F and clear CH n 1 F Problem 2 channel n input 1 set DECAP n...

Page 932: ...F bit clear CH n F 1 8 12 22 24 11 19 21 23 Figure 38 248 Dual Edge Capture Continuous mode for positive polarity pulse width measurement 38 4 24 4 Period measurement If the channels n and n 1 are co...

Page 933: ...C n 1 V registers are ready for reading channel n input after the filter DECAPEN bit C n 1 V FTM counter clear CH n 1 F problem 2 2 1 2 3 channel input DECAP bit set DECAPEN set DECAP 5 6 7 8 10 3 4...

Page 934: ...V FTM counter clear CH n 1 F 2 1 2 3 channel input DECAP bit set DECAPEN set DECAP 5 6 7 8 10 3 4 6 5 Note The commands set DECAPEN set DECAP clear CH n F and clear CH n 1 F are made by the user 4 9 1...

Page 935: ...ransferred to C n 1 V register when the C n V register is read In the following figure the read of C n V returns the FTM counter value when the event 1 occurred and the read of C n 1 V returns the FTM...

Page 936: ...bits in FILTER0 register The phase B input filter is enabled by PHBFLTREN bit and this filter s value is defined by CH1FVAL 3 0 bits CH n 1 FVAL 3 0 bits in FILTER0 register Except for CH0FVAL 3 0 and...

Page 937: ...A and B signals define the counting rate The FTM counter is updated when there is an edge either at the phase A or phase B signals If PHAPOL 0 and PHBPOL 0 then the FTM counter increment happens when...

Page 938: ...FTM counter overflow occurred phase A phase B FTM counter increment decrement FTM counter MOD CNTIN 0x0000 Time 1 1 1 1 1 1 1 set TOF set TOFDIR set TOF set TOFDIR 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Fi...

Page 939: ...rature Decoder boundary conditions The following figures show the FTM counter responding to motor jittering typical in motor position control applications phase A phase B FTM counter MOD CNTIN 0x0000...

Page 940: ...avoid these oscillations 38 4 26 BDM mode When the chip is in BDM mode the BDMMODE 1 0 bits select the behavior of the FTM counter the CH n F bit the channels output and the writes to the MOD CNTIN a...

Page 941: ...channels outputs are updated to the initial value except for channels in Output Compare mode In the channels outputs initialization the channel n output is forced to the CH n OI bit value when the val...

Page 942: ...SEL 0 CH4SEL 1 CH5SEL 0 CH6SEL 1 CH7SEL 0 f LDOK 1 CH0SEL 1 CH1SEL 1 CH2SEL 1 CH3SEL 1 CH4SEL 1 CH5SEL 1 CH6SEL 1 CH7SEL 1 d e f b a FTM counter MOD FTM counter C7V FTM counter C6V FTM counter C5V FTM...

Page 943: ...ailable on channel j output If CHjIE 1 then the channel j interrupt is generated when the channel j match occurs At the intermediate load neither the channels outputs nor the FTM counter are changed S...

Page 944: ...dules the configuration of each FTM module should guarantee that its FTM counter starts counting as soon as the gtb_in signal is 1 The GTB feature does not provide continuous synchronization of FTM co...

Page 945: ...er its value is updated to zero and the pins are not controlled by FTM See the table in the description of CnSC register After the reset the FTM should be configurated item 2 It is necessary to define...

Page 946: ...here is a write to CNT register item 3 In this case use the software output control Software output control or the initialization Initialization to update the channel output to the selected value item...

Page 947: ...re in the safe value Re Configuration FTM counter and channels to generation of periodic signals Disable the clock If the selected mode is Quadrature Decoder then disable this mode Examples of the re...

Page 948: ...is necessary SWSOC 0 1 and SWOC 0 1 SW Synchronization for Inverting if it is necessary SWINVC 0 1 and INVC 0 1 SW Synchronization for SWOM always SWOM 1 No enable the SW Synchronization for write bu...

Page 949: ...odule s instances see the chip configuration information The PIT module is an array of timers that can be used to raise interrupts and trigger DMA channels 39 1 1 Block diagram The following figure sh...

Page 950: ...of PIT channels used in this MCU 39 1 2 Features The main features of this block are Ability of timers to generate DMA trigger pulses Ability of timers to generate interrupts Maskable interrupts Inde...

Page 951: ...VAL1 32 R 0000_0000h 39 3 3 953 4003_7118 Timer Control Register PIT_TCTRL1 32 R W 0000_0000h 39 3 4 954 4003_711C Timer Flag Register PIT_TFLG1 32 R W 0000_0000h 39 3 5 954 4003_7120 Timer Load Value...

Page 952: ...is reserved and always has the value 0 2 Reserved This field is reserved 1 MDIS Module Disable PIT section Disables the standard timers This field must be enabled before any other setup is done 0 Cloc...

Page 953: ...expires To abort the current cycle and start a timer period with the new value the timer must be disabled and enabled again 39 3 3 Current Timer Value Register PIT_CVALn These registers indicate the c...

Page 954: ...can decrement by 1 Timer 0 cannot be chained 0 Timer is not chained 1 Timer is chained to previous timer For example for Channel 2 if this field is set Timer 2 is chained to Timer 1 1 TIE Timer Inter...

Page 955: ...scription This section provides the functional description of the module 39 4 1 General operation This section gives detailed information on the internal operation of the module Each timer can be used...

Page 956: ...and then enabling the timer again See the following figure Timer enabled Disable timer p1 p1 Re enable timer Start value p1 Trigger event Set new load value p2 p2 p2 Figure 39 24 Modifying running tim...

Page 957: ...evious timer has expired So if timer n 1 has counted down to 0 counter n will decrement the value by one This allows to chain some of the timers together to form a longer timer The first timer timer 0...

Page 958: ...0 MHz Timers 1 and 2 are available An interrupt shall be raised every 1 minute The PIT module needs to be activated by writing a 0 to MCR MDIS The 100 MHz clock frequency equates to a clock period of...

Page 959: ...counts PIT_TCTRL2 TIE enable Timer 2 interrupt PIT_TCTRL2 CHN chain Timer 2 to Timer 1 PIT_TCTRL2 TEN start Timer 2 Timer 1 PIT_LDVAL1 0x23C345FF setup Timer 1 for 600 000 000 cycles PIT_TCTRL1 TEN s...

Page 960: ...Example configuration for chained timers K22F Sub Family Reference Manual Rev 3 7 2014 960 Freescale Semiconductor Inc...

Page 961: ...vents allowing it to be used as a time of day counter 40 1 1 Features The features of the LPTMR module include 16 bit time counter or pulse counter with compare Optional interrupt can generate asynchr...

Page 962: ...Table 40 2 LPTMR signal descriptions Signal I O Description LPTMR_ALTn I Pulse Counter Input pin 40 2 1 Detailed signal descriptions Table 40 3 LPTMR interface detailed signal descriptions Signal I O...

Page 963: ...Description 31 8 Reserved This field is reserved This read only field is reserved and always has the value 0 7 TCF Timer Compare Flag TCF is set when the LPTMR is enabled and the CNR equals the CMR a...

Page 964: ...abled 0 CNR is reset whenever TCF is set 1 CNR is reset on overflow 1 TMS Timer Mode Select Configures the mode of the LPTMR TMS must be altered only when the LPTMR is disabled 0 Time Counter mode 1 P...

Page 965: ...r clock by 1024 glitch filter recognizes change on input pin after 512 rising clock edges 1010 Prescaler divides the prescaler clock by 2048 glitch filter recognizes change on input pin after 1024 ris...

Page 966: ...When the LPTMR is enabled and the CNR equals the value in the CMR and increments TCF is set and the hardware trigger asserts until the next time the CNR increments If the CMR is 0 the hardware trigge...

Page 967: ...four clocks The clock source must be enabled before the LPTMR is enabled NOTE The clock source selected may need to be configured to remain enabled in low power modes otherwise the LPTMR will not oper...

Page 968: ...litch filter directly clocks the CNR When the LPTMR is first enabled the output of the glitch filter is asserted that is logic 1 for active high and logic 0 for active low The following table shows th...

Page 969: ...aler output in Time Counter mode with prescaler enabled Input source assertion in Pulse Counter mode with glitch filter bypassed Glitch filter output in Pulse Counter mode with glitch filter enabled T...

Page 970: ...trigger will assert on each compare and deassert on the following increment of the CNR 40 4 7 LPTMR interrupt The LPTMR interrupt is generated whenever CSR TIE and CSR TCF are set CSR TCF is cleared b...

Page 971: ...compensation that can correct errors between 0 12 ppm and 3906 ppm Register write protection Lock register requires VBAT POR or software reset to enable write access Access control registers require s...

Page 972: ...68 kHz oscillator input I XTAL32 32 768 kHz oscillator output O RTC_CLKOUT 1 Hz square wave output O RTC_WAKEUP Wakeup for external device O 41 1 3 1 RTC clock output The clock to the seconds counter...

Page 973: ...Time Prescaler Register RTC_TPR 32 R W 0000_0000h 41 2 2 974 4003_D008 RTC Time Alarm Register RTC_TAR 32 R W 0000_0000h 41 2 3 974 4003_D00C RTC Time Compensation Register RTC_TCR 32 R W 0000_0000h 4...

Page 974: ...ons Field Description 31 16 Reserved This field is reserved This read only field is reserved and always has the value 0 15 0 TPR Time Prescaler Register When the time counter is enabled the TPR is rea...

Page 975: ...Compensation Interval Register Configures the compensation interval in seconds from 1 to 256 to control how frequently the TCR should adjust the number of 32 768 kHz cycles in each second The value wr...

Page 976: ...d descriptions Field Description 31 15 Reserved This field is reserved This read only field is reserved and always has the value 0 14 Reserved This field is reserved It must always be written to 0 13...

Page 977: ...32kHz clock provided the wakeup pin is turned on and the 32kHz clock is output to other peripherals 3 UM Update Mode Allows SR TCE to be written even when the Status Register is locked When set the S...

Page 978: ...as the value 0 2 TAF Time Alarm Flag Time alarm flag is set when the TAR TAR equals the TSR TSR and the TSR TSR increments This bit is cleared by writing the TAR register 0 Time alarm has not occurred...

Page 979: ...ed and writes complete as normal 5 SRL Status Register Lock After being cleared this bit can be set only by VBAT POR or software reset 0 Status Register is locked and writes are ignored 1 Status Regis...

Page 980: ...t 1 If the wakeup pin is enabled then the wakeup pin will assert 6 5 Reserved This field is reserved 4 TSIE Time Seconds Interrupt Enable The seconds interrupt is an edge sensitive interrupt with a de...

Page 981: ...Interrupt Enable Register Write After being cleared this bit is set only by system reset It is not affected by VBAT POR or software reset 0 Writes to the Interupt Enable Register are ignored 1 Writes...

Page 982: ...the Time Alarm Register complete as normal 1 TPRW Time Prescaler Register Write After being cleared this bit is set only by system reset It is not affected by VBAT POR or software reset 0 Writes to th...

Page 983: ...the Control Register are ignored 1 Reads to the Control Register complete as normal 3 TCRR Time Compensation Register Read After being cleared this bit is set only by system reset It is not affected...

Page 984: ...The RTC also monitors the chip power supply and electrically isolates itself when the rest of the chip is powered down NOTE An attempt to access an RTC register except the access control registers re...

Page 985: ...mended that two read accesses are performed and that software verifies that the same data was returned for both reads The time seconds register and time prescaler register can be written only when SR...

Page 986: ...pensation value is used to adjust the number of clock cycles between 127 and 128 Cycles are added or subtracted from the prescaler register when the prescaler register equals 0x3FFF and then increment...

Page 987: ...n be used to block write accesses to certain registers until the next VBAT POR or software reset Locking the Control register CR will disable the software reset Locking LR will block future updates to...

Page 988: ...ted interrupt vector that is generated once a second and requires no software overhead there is no corresponding status flag to clear It is enabled in the RTC by the time seconds interrupt enable bit...

Page 989: ...er 42 1 1 USB The USB is a cable bus that supports data exchange between a host computer and a wide range of simultaneously accessible peripherals The attached peripherals share USB bandwidth through...

Page 990: ...ble consumer electronic devices such as digital cameras and tablets to host PCs The On The Go OTG Supplement to the USB Specification extends USB to peer to peer application Using USB OTG technology c...

Page 991: ...d points DMA or FIFO data stream interfaces Low power consumption On The Go protocol logic IRC48 with clock recovery is supported to eliminate the 48 MHz crystal It is used for USB device only impleme...

Page 992: ...ximum throughput provided by USB Software should manage buffers for USBFS by updating the BDT when needed This allows USBFS to efficiently manage data transmission and reception while the microprocess...

Page 993: ...on of data For this reason a USBFS core centric nomenclature is used to describe the direction of the data transfer between the USBFS core and USB RX or receive describes transfers that move data from...

Page 994: ...ther it owns the BD and corresponding buffer in system memory To compute the entry point in to the BDT the BDT_PAGE registers is concatenated with the current endpoint and the TX and ODD fields to for...

Page 995: ...Where the buffer resides in system memory The format for the BD is shown in the following figure Table 42 4 Buffer descriptor format 31 26 25 16 15 8 7 6 5 4 3 2 1 0 RSVD BC 10 bits RSVD OWN DATA0 1...

Page 996: ...PID is written back to the BD by USBFS TOK_PID 3 If the OWN bit is also set the BD remains owned by USBFS indefinitely when written by USB it serves as the TOK_PID 3 bit 0 or 1 Bit 3 of the current t...

Page 997: ...t the current token PID The current token PID is written back in to the BD by USBFS when a transfer completes The values written back are the token PID values from the USB specification 0x1h for an OU...

Page 998: ...rrupt Generated TOK_DNE Interrupt Generated TOK_DNE Interrupt Generated Figure 42 4 USB token transaction The USB has two sources for the DMA overrun error Memory Latency The memory latency may be too...

Page 999: ...at represents the length of the clipped data actually written to memory From here the software can decide an appropriate course of action for future transactions such as stalling the endpoint cancelin...

Page 1000: ...Page Register 3 USB0_BDTPAGE3 8 R W 00h 42 4 22 1018 4007_20C0 Endpoint Control register USB0_ENDPT0 8 R W 00h 42 4 23 1019 4007_20C4 Endpoint Control register USB0_ENDPT1 8 R W 00h 42 4 23 1019 4007_...

Page 1001: ...USB Transceiver Control register 0 USB0_USBTRC0 8 R W 00h 42 4 27 1022 4007_2114 Frame Adjust Register USB0_USBFRMADJUST 8 R W 00h 42 4 28 1023 4007_2140 USB Clock recovery control USB0_CLK_RECOVER_C...

Page 1002: ...D Write Reset 1 1 1 1 1 0 1 1 USBx_IDCOMP field descriptions Field Description 7 6 Reserved This field is reserved This read only field is reserved and always has the value 1 5 0 NID Ones complement o...

Page 1003: ...rmine the event that triggers an interrupt Only bits that have changed since the last software read are set Writing a one to a bit clears the associated interrupt Address 4007_2000h base 10h offset 40...

Page 1004: ...ved This read only field is reserved and always has the value 0 0 AVBUSCHG This bit is set when a change in VBUS is detected on an A device 42 4 6 OTG Interrupt Control register USBx_OTGICR Enables th...

Page 1005: ...ield descriptions Field Description 7 ID Indicates the current state of the ID pin on the USB connector 0 Indicates a Type A cable is plugged into the USB connector 1 Indicates no cable is attached or...

Page 1006: ...OTGCTL Controls the operation of VBUS and Data Line termination resistors Address 4007_2000h base 1Ch offset 4007_201Ch Bit 7 6 5 4 3 2 1 0 Read DPHIGH 0 DPLOW DMLOW 0 OTGEN 0 Write Reset 0 0 0 0 0 0...

Page 1007: ...0 after a reset Address 4007_2000h base 80h offset 4007_2080h Bit 7 6 5 4 3 2 1 0 Read STALL ATTACH RESUME SLEEP TOKDNE SOFTOK ERROR USBRST Write w1c w1c w1c w1c w1c w1c w1c w1c Reset 0 0 0 0 0 0 0 0...

Page 1008: ...SBRST This bit is set when the USB Module has decoded a valid USB reset This informs the processor that it should write 0x00 into the address register and enable endpoint 0 USBRST is set after a USB r...

Page 1009: ...of this register are logically OR d together and the result placed in the ERROR bit of the ISTAT register After an interrupt bit has been set it may only be cleared by writing a one to the respective...

Page 1010: ...s be an integral number of bytes If the data field was not an integral number of bytes this bit is set 2 CRC16 This bit is set when a data packet is rejected due to a CRC16 error 1 CRC5EOF This error...

Page 1011: ...the BTOERR interrupt 1 Enables the BTOERR interrupt 3 DFN8EN DFN8 Interrupt Enable 0 Disables the DFN8 interrupt 1 Enables the DFN8 interrupt 2 CRC16EN CRC16 Interrupt Enable 0 Disables the CRC16 inte...

Page 1012: ...KDNE bit in the ISTAT register causes the SIE to update STAT with the contents of the next STAT value If the data in the STAT holding register is valid the SIE immediately reasserts to TOKDNE interrup...

Page 1013: ...set USB peripherals This control signal is only valid in Host mode HOSTMODEEN 1 Software must set RESET to 1 for the required amount of time and then clear it to 0 to end reset signaling For more info...

Page 1014: ...es active or the USB module decodes a USB reset signal This action initializes the Address register to decode address 0x00 as required by the USB specification Address 4007_2000h base 98h offset 4007_...

Page 1015: ...is reserved This read only field is reserved and always has the value 0 42 4 17 Frame Number register Low USBx_FRMNUML The Frame Number registers low and high contain the 11 bit frame number These reg...

Page 1016: ...peripheral it writes the TOKEN type and endpoint to this register After this register has been written the USB module begins the specified USB transaction to the address contained in the address regi...

Page 1017: ...acket transactions This register must be set to a value that ensures that other packets are not actively being transmitted when the SOF time counts to zero When the SOF counter reaches the threshold v...

Page 1018: ...er Descriptor Table resides in system memory 42 4 22 BDT Page Register 3 USBx_BDTPAGE3 Contains an 8 bit value used to compute the address where the current Buffer Descriptor Table BDT resides in syst...

Page 1019: ...define if an endpoint is enabled and define the direction of the endpoint The endpoint enable direction control is defined in the following table Table 42 97 Endpoint enable and direction control EPCT...

Page 1020: ...hen set enables the endpoint for TX transfers See Table 42 31 1 EPSTALL When set this bit indicates that the endpoint is called This bit has priority over all other control bits in the EndPoint Enable...

Page 1021: ...pulldown disabled 1 D pulldown enabled 5 Reserved This field is reserved This read only field is reserved and always has the value 0 4 DMPD Provides observability of the D Pulldown enable at the USB...

Page 1022: ...4 Read 0 USBRESMEN 0 Write USBRESET Reset 0 0 0 0 Bit 3 2 1 0 Read 0 USB_CLK_ RECOVERY_INT SYNC_DET USB_RESUME_INT Write Reset 0 0 0 0 USBx_USBTRC0 field descriptions Field Description 7 USBRESET USB...

Page 1023: ...cating that the frequency trim calculated is out of the adjustment range of the IRC48M output clock To clear this bit after it has been set Write 0xFF to register USB_CLK_RECOVER_INT_STATUS 1 SYNC_DET...

Page 1024: ...cking phase The step to fine tune the IRC 48Mhz by adjusting the trim fine value is different during these two phases The step in rough phase is larger than that in tracking phase Switch back to rough...

Page 1025: ...criptions Field Description 7 2 Reserved This field is reserved 1 IRC_EN IRC48M enable This bit is used to enable the on chip IRC48Mhz module to generate clocks for crystal less USB It can be used for...

Page 1026: ...n 7 5 Reserved This field is reserved Should always be written as 0 4 OVF_ERROR_ EN Determines whether OVF_ERROR condition signal is used in generation of USB_CLK_RECOVERY_INT 0 The interrupt will be...

Page 1027: ...palmtop computer with the obvious advantages of easier interaction Host mode is intended for use in handheld portable devices to allow easy connection to simple HID class devices such as printers and...

Page 1028: ...tor changing the state of DPLUS or DMINUS from 0 to 1 SE0 to J or K state 4 Check the state of the JSTATE and SE0 bits in the control register If the connecting device is low speed JSTATE bit is 0 set...

Page 1029: ...Device Framework http www usb org developers docs 7 To initiate the data phase of the setup transaction that is get the data for the GET DEVICE DESCRIPTOR command set up a buffer in memory for the da...

Page 1030: ...ally there is only one other device on the USB bus in host mode so it is expected that the address is 0x01 and should remain constant 2 Write 0x1D to ENDPT0 register to enable transmit and receive tra...

Page 1031: ...tocol SRP API calls are provided to give access to the OTG protocol control signals and include the OTG capabilities in the device application The following state machines show the OTG operations invo...

Page 1032: ...d or the A device cannot support the current required from the B device Go to A_WAIT_VFALL Turn off DRV_VBUS If A_VBUS_VLD interrupt Go to A_WAIT_BCON A_WAIT_BCON After 200 ms without Attach or ID Int...

Page 1033: ...rrupt Go to A_WAIT_VFALL Turn off DRV_VBUS If 3 200 ms of Bus Idle Go to A_WAIT_BCON Turn on Host mode A_WAIT_VFALL If ID Interrupt or A_SESS_VLD b_conn Go to A_IDLE 42 7 2 OTG dual role B device oper...

Page 1034: ...goes away the host doesn t support us Go to B_IDLE Go to B_IDLE If 3 125 ms expires or if a Resume occurs Go to B_PERIPHERAL B_HOST If ID Interrupt or B_SESS_VLD Interrupt If the cable changes or if...

Page 1035: ...SIM_SOPT2 USBSRC 1b For chip specific details see the USB FS OTG controller clocking information in the Clock Distribution chapter Chapter 42 Universal Serial Bus Full Speed OTG Controller USBFSOTG K...

Page 1036: ...Device mode IRC48 operation K22F Sub Family Reference Manual Rev 3 7 2014 1036 Freescale Semiconductor Inc...

Page 1037: ...input power supply varying from 2 7 V to 5 5 V It consists of one 3 3 V power channel When the input power supply is below 3 6 V the regulator goes to pass through mode The following figure shows the...

Page 1038: ...but a switch disconnects its output from the external pin In STANDBY mode the RUN regulator is disabled and the STANDBY regulator output is connected to the external pin Internal power mode signals co...

Page 1039: ...or is disabled and the standby regulator is active The switch connecting the STANDBY regulator output to the external pin is closed SHUTDOWN The module is disabled The regulator is enabled by default...

Page 1040: ...USB Voltage Regulator Module Signal Descriptions K22F Sub Family Reference Manual Rev 3 7 2014 1040 Freescale Semiconductor Inc...

Page 1041: ...ces see the chip configuration information The serial peripheral interface SPI module provides a synchronous serial bus for communication between an MCU and an external peripheral device 44 1 1 Block...

Page 1042: ...duplex three wire synchronous transfers Master mode Slave mode Data streaming operation in Slave mode with continuous slave selection Buffered transmit operation using the transmit first in first out...

Page 1043: ...p selects PCSes with external demultiplexer DMA support for adding entries to TX FIFO and removing entries from RX FIFO TX FIFO is not full TFFF RX FIFO is not empty RFDF Interrupt conditions End of Q...

Page 1044: ...can reside in system RAM external to the module Data transfers between the queues and the module FIFOs are accomplished by a DMA controller or host CPU The following figure shows a system example wit...

Page 1045: ...als are controlled by the module and configured as outputs SCK SOUT PCS x 44 1 4 2 Slave Mode Slave mode allows the module to communicate with SPI bus masters In this mode the module responds to exter...

Page 1046: ...nal descriptions This table describes the signals on the boundary of the module that may connect off chip in alphabetical order Table 44 1 Module signal descriptions Signal Master mode Slave mode I O...

Page 1047: ...ta transmitted by the module Peripheral Chip Select Strobe O Used only when the peripheral chip select strobe is enabled MCR PCSSE Strobes an off module peripheral chip select demultiplexer which deco...

Page 1048: ...and Transfer Attributes Register In Master Mode SPI0_CTAR0 32 R W 7800_0000h 44 3 3 1053 4002_C00C Clock and Transfer Attributes Register In Slave Mode SPI0_CTAR0_SLAVE 32 R W 7800_0000h 44 3 4 1058 4...

Page 1049: ...Mode SPI1_CTAR1 32 R W 7800_0000h 44 3 3 1053 4002_D02C Status Register SPI1_SR 32 R W See section 44 3 5 1060 4002_D030 DMA Interrupt Request Select and Enable Register SPI1_RSER 32 R W 0000_0000h 4...

Page 1050: ...OOE 0 PCSIS W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R DOZE MDIS DIS_ TXF DIS_ RXF 0 0 SMPL_PT 0 Reserved Reserved HALT W CLR_TXF CLR_RXF Reset 0 1 0 0 0 0 0 0...

Page 1051: ...PCS Strobe signal 24 ROOE Receive FIFO Overflow Overwrite Enable In the RX FIFO overflow condition configures the module to ignore the incoming serial data or overwrite existing data If the RX FIFO i...

Page 1052: ...This bit can only be written when the MDIS bit is cleared 0 RX FIFO is enabled 1 RX FIFO is disabled 11 CLR_TXF Clear TX FIFO Flushes the TX FIFO Writing a 1 to CLR_TXF clears the TX FIFO Counter The...

Page 1053: ...ield Description 31 16 SPI_TCNT SPI Transfer Counter Counts the number of SPI transfers the module makes The SPI_TCNT field increments every time the last bit of an SPI frame is transmitted A value wr...

Page 1054: ...Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SPIx_CTARn field descriptions Field Description 31 DBR Double Baud Rate Doubles the effective baud rate of the Serial Communications Clock SCK This field is used...

Page 1055: ...sful communication between serial devices the devices must have identical clock phase settings In Continuous SCK mode the bit value is ignored and the transfers are done as if the CPHA bit is set to 1...

Page 1056: ...uency of the SCK The protocol clock is divided by the prescaler value before the baud rate selection takes place See the BR field description for details on how to compute the baud rate 00 Baud Rate P...

Page 1057: ...PCS signal at the end of a frame and the assertion of PCS at the beginning of the next frame In the Continuous Serial Communications Clock operation the DT value is fixed to one SCK clock period The...

Page 1058: ...d i where i 0d to 0d Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R FMSZ CPOL CPHA 0 Reserved Reserved W Reset 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R Reserv...

Page 1059: ...both master and slave mode For successful communication between serial devices the devices must have identical clock phase settings In Continuous SCK mode the bit value is ignored and the transfers ar...

Page 1060: ...15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R TXCTR TXNXTPTR RXCTR POPNXTPTR W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SPIx_SR field descriptions Field Description 31 TCF Transfer Complete Flag Indicates that...

Page 1061: ...e to request more entries to be added to the TX FIFO The TFFF bit is set while the TX FIFO is not full The TFFF bit can be cleared by writing 1 to it or by acknowledgement from the DMA controller to t...

Page 1062: ...remented every time an SPI command is executed and the SPI data is transferred to the shift register 11 8 TXNXTPTR Transmit Next Pointer Indicates which TX FIFO entry is transmitted during the next tr...

Page 1063: ...nable Enables TCF flag in the SR to generate an interrupt request 0 TCF interrupt requests are disabled 1 TCF interrupt requests are enabled 30 Reserved This field is reserved This read only field is...

Page 1064: ...e FIFO Overflow Request Enable Enables the RFOF flag in the SR to generate an interrupt request 0 RFOF interrupt requests are disabled 1 RFOF interrupt requests are enabled 18 Reserved This field is r...

Page 1065: ...t update the FIFO Therefore any reads performed while the module is disabled return the last PUSHR write performed while the module was still enabled Address Base address 34h offset Bit 31 30 29 28 27...

Page 1066: ...r Counter Clears the TCNT field in the TCR register The TCNT field is cleared before the module starts transmitting the current SPI frame 0 Do not clear the TCR TCNT field 1 Clear the TCR TCNT field 2...

Page 1067: ...ociated SPI command 44 3 9 POP RX FIFO Register SPIx_POPR POPR is used to read the RX FIFO Eight or sixteen bit read accesses to the POPR have the same effect on the RX FIFO as 32 bit read accesses A...

Page 1068: ...ts the transfer attributes for the SPI data In Slave mode the TXDATA contains 16 MSB bits of the SPI data to be shifted out 15 0 TXDATA Transmit Data Contains the SPI data to be shifted out 44 3 11 Re...

Page 1069: ...me basis by setting a field in the SPI command See Clock and Transfer Attributes Register In Master Mode SPI_CTARn for information on the fields of CTAR registers Typical master to slave connections a...

Page 1070: ...no transfers are responded to in Slave mode The Stopped state is also a safe state for writing the various configuration registers of the module without causing undetermined results In the Running st...

Page 1071: ...sfers initiated by a bus master external to it and the SPI command field space is reserved 44 4 2 1 Master mode In SPI Master mode the module initiates the serial transfers by controlling the SCK and...

Page 1072: ...g of SPI data The number of entries in the TX FIFO is device specific SPI data is added to the TX FIFO by writing to the Data Field of module PUSH FIFO Register PUSHR TX FIFO entries can only be remov...

Page 1073: ...The RX FIFO functions as a buffer for data received on the SIN pin The RX FIFO holds 4 received SPI data frames The number of entries in the RX FIFO is device specific SPI data is added to the RX FIF...

Page 1074: ...rom the RX FIFO by reading the module POP RX FIFO Register POPR A read of the POPR decrements the RX FIFO Counter by one Attempts to pop data from an empty RX FIFO are ignored and the RX FIFO Counter...

Page 1075: ...ncy used to drive this module in the device 44 4 3 2 PCS to SCK Delay tCSC The PCS to SCK delay is the length of time from assertion of the PCS signal to the first SCK edge See Figure 44 72 for an ill...

Page 1076: ...tween negation of the PCS signal for a frame and the assertion of the PCS signal for the next frame See Figure 44 72 for an illustration of the Delay after Transfer The PDT and DT fields in the CTARx...

Page 1077: ...CK field in the CTAR based on the following formula P At the end of the transfer the delay between PCSS negation and PCS negation is selected by the PASC field in the CTAR based on the following formu...

Page 1078: ...bus slave does not control the SCK signal in Slave mode the values of CPOL and CPHA must be identical to the master device settings to ensure proper transmission In SPI Slave mode only CTAR0 is used...

Page 1079: ...initiates the transfer by placing its first data bit on the SOUT pin and asserting the appropriate peripheral chip select signals to the slave device The slave responds by placing its first data bit...

Page 1080: ...t 4 Bit 3 Bit 2 Bit 1 LSB first LSBFE 1 LSB Figure 44 73 Module transfer timing diagram MTFE 0 CPHA 1 FMSZ 8 The master initiates the transfer by asserting the PCS signal to the slave After the tCSC d...

Page 1081: ...are selected by the PCSISn bits in the MCR The following timing diagram is for two four bit transfers with CPHA 1 and CONT 0 PCSx SCK Master SIN tCSC PCS to SCK dela t ASC After SCK delay SCK CPOL 0 S...

Page 1082: ...master deasserts the PCSn at end of transmission of the last frame PUSHR CONT must be deasserted before asserting MCR HALT in master mode This will make sure that the PCSn signals are deasserted Asser...

Page 1083: ...s used In all configurations the currently selected CTAR remains in use until the start of a frame with a different CTAR specified or the Continuous SCK mode is terminated It is recommended to keep th...

Page 1084: ...ions include Continuous SCK with CONT bit set but no data in the TX FIFO Continuous SCK with CONT bit set and entering Stopped state refer to Start and Stop of module transfers Continuous SCK with CON...

Page 1085: ...s several conditions that can generate only interrupt requests and two conditions that can generate interrupt or DMA requests The following table lists these conditions Table 44 104 Interrupt and DMA...

Page 1086: ...s generated NOTE TFFF flag clears automatically when DMA is used to fill TX FIFO To clear TFFF when not using DMA follow these steps for every PUSH performed using CPU to fill TX FIFO 1 Wait until TFF...

Page 1087: ...e RSER must be set for the interrupt request to be generated Depending on the state of the ROOE bit in the MCR the data from the transfer that generated the overflow is either ignored or shifted in to...

Page 1088: ...ct when the module is in the Module Disable mode Reading the RX FIFO Pop Register does not change the state of the RX FIFO Similarly writing to the PUSHR Register does not change the state of the TX F...

Page 1089: ...new queues 8 Flush TX FIFO by writing a 1 to the CLR_TXF bit in the MCR Flush RX FIFO by writing a 1 to the CLR_RXF bit in the MCR 9 Clear transfer count either by setting CTCNT bit in the command wo...

Page 1090: ...E The clock frequency mentioned above is given as an example in this chapter See the clocking chapter for the frequency used to drive this module in the device Table 44 105 Baud rate values bps Baud r...

Page 1091: ...2 8 s 17 9 s 512 5 1 s 15 4 s 25 6 s 35 8 s 1024 10 2 s 30 7 s 51 2 s 71 7 s 2048 20 5 s 61 4 s 102 4 s 143 4 s 4096 41 0 s 122 9 s 204 8 s 286 7 s 8192 81 9 s 245 8 s 409 6 s 573 4 s 16384 163 8 s 49...

Page 1092: ...44 78 TX FIFO pointers and counter 44 5 6 1 Address Calculation for the First in Entry and Last in Entry in the TX FIFO The memory address of the first in entry in the TX FIFO is computed by the foll...

Page 1093: ...g equation The memory address of the last in entry in the RX FIFO is computed by the following equation RX FIFO Base Base address of RX FIFO RXCTR RX FIFO counter POPNXTPTR Pop Next Pointer RX FIFO De...

Page 1094: ...Initialization application information K22F Sub Family Reference Manual Rev 3 7 2014 1094 Freescale Semiconductor Inc...

Page 1095: ...be connected are limited by a maximum bus capacitance of 400 pF The I2C module also complies with the System Management Bus SMBus Specification version 2 45 1 1 Features The I2C module has the followi...

Page 1096: ...he basic mode of operation To conserve power in this mode disable the module Wait mode The module continues to operate when the core is in Wait mode and can provide a wakeup interrupt Stop mode The mo...

Page 1097: ...ure 45 1 I2C Functional block diagram 45 2 I2C signal descriptions The signal properties of I2C are shown in the table found here Table 45 1 I2C signal descriptions Signal Description I O SCL Bidirect...

Page 1098: ...6_600A I2C SCL Low Timeout Register High I2C0_SLTH 8 R W 00h 45 3 11 1109 4006_600B I2C SCL Low Timeout Register Low I2C0_SLTL 8 R W 00h 45 3 12 1110 4006_7000 I2C Address Register 1 I2C1_A1 8 R W 00h...

Page 1099: ...1 0 Read MULT ICR Write Reset 0 0 0 0 0 0 0 0 I2Cx_F field descriptions Field Description 7 6 MULT Multiplier Factor Defines the multiplier factor mul This factor is used along with the SCL divider to...

Page 1100: ...e For example if the I2C module clock speed is 8 MHz the following table shows the possible hold time values with different ICR and MULT selections to achieve an I2C baud rate of 100 kbit s MULT ICR H...

Page 1101: ...f FACK is cleared or the current receiving byte if FACK is set 1 No acknowledge signal is sent to the bus on the following receiving data byte if FACK is cleared or the current receiving data byte if...

Page 1102: ...data register in transmit mode 0 Transfer in progress 1 Transfer complete 6 IAAS Addressed As A Slave This bit is set by one of the following conditions The calling address matches the programmed prim...

Page 1103: ...iting 1 to it such as in the interrupt routine One of the following events can set this bit One byte transfer including ACK NACK bit completes if FACK is 0 An ACK or NACK is sent on the bus by writing...

Page 1104: ...e Data register does not initiate the receive Reading the Data register returns the last byte received while the I2C module is configured in master receive or slave receive mode The Data register does...

Page 1105: ...hen this bit is set a slave address matching occurs for any address greater than the value of the A1 register and less than or equal to the value of the RA register 0 Range mode disabled No address ma...

Page 1106: ...CF bit after the MCU wakes from the stop mode 0 Stop holdoff is disabled The MCU s entry to stop mode is not gated 1 Stop holdoff is enabled 6 STOPF I2C Bus Stop Detect Flag Hardware sets this bit whe...

Page 1107: ...rol and Status register I2Cx_SMB NOTE When the SCL and SDA signals are held high for a length of time greater than the high timeout period the SHTF1 flag sets Before reaching this threshold while the...

Page 1108: ...Clock Select Selects the clock source of the timeout counter 0 Timeout counter counts at the frequency of the I2C module clock 64 1 Timeout counter counts at the frequency of the I2C module clock 3 S...

Page 1109: ...used by the SMBus This field is used on the device default address or other related addresses 0 Reserved This field is reserved This read only field is reserved and always has the value 0 45 3 11 I2C...

Page 1110: ...s a serial data line SDA and a serial clock line SCL for data transfers All devices connected to it must have open drain or open collector outputs A logic AND function is exercised on both lines with...

Page 1111: ...igh to low transition of SDA while SCL is high This signal denotes the beginning of a new data transfer each data transfer might contain several bytes of data and brings all slaves out of their idle s...

Page 1112: ...s signaled from the receiving device by pulling SDA low at the ninth clock In summary one complete data transfer needs nine clock pulses If the slave receiver does not acknowledge the master in the ni...

Page 1113: ...ase the transition from master to slave mode does not generate a STOP condition Meanwhile hardware sets a status bit to indicate the loss of arbitration 45 4 1 7 Clock synchronization Because wire AND...

Page 1114: ...w a slave can drive SCL low for the required period and then release it If the slave s SCL low period is greater than the master s SCL low period the resulting SCL bus signal s low period is stretched...

Page 1115: ...7 286 289 0D 48 11 20 25 2D 640 97 318 321 0E 56 13 24 29 2E 768 129 382 385 0F 68 13 30 35 2F 960 129 478 481 10 48 9 18 25 30 640 65 318 321 11 56 9 22 29 31 768 65 382 385 12 64 13 26 33 32 896 129...

Page 1116: ...7 bits 11110 AD10 AD9 R W 0 A1 Slave address second byte AD 8 1 A2 Data A Data A A P After the master transmitter has sent the first byte of the 10 bit address the slave receiver sees an I2C interrupt...

Page 1117: ...g process It provides a 7 bit address If the ADEXT bit is set AD 10 8 in Control Register 2 participates in the address matching process It extends the I2C primary slave address to a 10 bit address Ad...

Page 1118: ...and be able to receive a new START condition within the timeframe of TTIMEOUT MAX SMBus defines a clock low timeout TTIMEOUT of 35 ms specifies TLOW SEXT as the cumulative clock low extend time for a...

Page 1119: ...intervals TLOW SEXT and TLOW MEXT When in master mode the I2C module must not cumulatively extend its clock cycles for a period greater than TLOW MEXT within a byte where each byte is defined as STAR...

Page 1120: ...o acknowledge its own address as a mechanism to detect the presence of a removable device such as a battery or docking station on the bus In addition to indicating a slave device busy condition SMBus...

Page 1121: ...IICIF IICIE Arbitration lost ARBL IICIF IICIE I2C bus stop detection STOPF IICIF IICIE SSIE I2C bus start detection STARTF IICIF IICIE SSIE SMBus SCL low timeout SLTF IICIF IICIE SMBus SCL high SDA lo...

Page 1122: ...r more masters try to control the bus at the same time the relative priority of the contending masters is determined by a data arbitration procedure The I2C module asserts the arbitration lost interru...

Page 1123: ...The width of the glitch to absorb can be specified in terms of the number of half I2C module clock cycles A single Programmable Input Glitch Filter control register is provided Effectively any down u...

Page 1124: ...DMAEN bit is cleared and the IICIE bit is set an interrupt condition generates an interrupt request If the DMAEN bit is set and the IICIE bit is set an interrupt condition generates a DMA request ins...

Page 1125: ...smit data 4 Initialize RAM variables used to achieve the routine shown in the following figure 5 Write Control Register 1 to enable TX 6 Write Control Register 1 to enable MST master mode 7 Write Data...

Page 1126: ...rom Data reg N Y N N N N N N Y Y Y Y Y read N write N Y Rx Tx Rx Tx Y N Address transfer see note 1 Data transfer see note 2 N Y Y Y Notes 1 If general call is enabled check to determine if the receiv...

Page 1127: ...o Data reg Clear IICIF Notes 1 If general call or SIICAEN is enabled check to determine if the received address is a general call address 0x00 or an SMBus device default address In either case they mu...

Page 1128: ...Initialization application information K22F Sub Family Reference Manual Rev 3 7 2014 1128 Freescale Semiconductor Inc...

Page 1129: ...es Full duplex operation Standard mark space non return to zero NRZ format Selectable IrDA 1 4 return to zero inverted RZI format with programmable pulse width 13 bit baud rate selection with 32 fract...

Page 1130: ...try threshold Support for 11 and 12 ETU transfers Detection of initial packet and automated transfer parameter programming Interrupt driven operation with seven ISO 7816 specific interrupts Wait time...

Page 1131: ...l mode of operation 46 1 2 2 Wait mode UART operation in the Wait mode depends on the state of the C1 UARTSWAI field If C1 UARTSWAI is cleared and the CPU is in Wait mode the UART operates normally If...

Page 1132: ...abled The UART operation resumes after an external interrupt brings the CPU out of Stop mode Bringing the CPU out of Stop mode by reset aborts any ongoing transmission or reception and resets the UART...

Page 1133: ...me can deassert asynchronously to the other input signals RXD I Receive data Serial data input to receiver State meaning Whether RXD is interpreted as a 1 or 0 depends on the bit encoding method along...

Page 1134: ...a Register UART0_ED 8 R 00h 46 3 13 1153 4006_A00D UART Modem Register UART0_MODEM 8 R W 00h 46 3 14 1154 4006_A00E UART Infrared Register UART0_IR 8 R W 00h 46 3 15 1155 4006_A010 UART FIFO Parameter...

Page 1135: ...W 06h 46 3 37 1172 4006_A03F UART 7816 Wait Parameter Register C UART0_WP7816C_T1 8 R W 0Bh 46 3 38 1172 4006_B000 UART Baud Rate Registers High UART1_BDH 8 R W 00h 46 3 1 1138 4006_B001 UART Baud Ra...

Page 1136: ...1_IS7816 8 R W 00h 46 3 25 1164 4006_B01B UART 7816 Wait Parameter Register UART1_WP7816 8 R W 00h 46 3 26 1166 4006_B01C UART 7816 Wait N Register UART1_WN7816 8 R W 00h 46 3 27 1166 4006_B01D UART 7...

Page 1137: ...006_C00A UART Control Register 4 UART2_C4 8 R W 00h 46 3 11 1151 4006_C00B UART Control Register 5 UART2_C5 8 R W 00h 46 3 12 1152 4006_C00C UART Extended Data Register UART2_ED 8 R 00h 46 3 13 1153 4...

Page 1138: ...RT 7816 Wait Parameter Register A UART2_WP7816A_T1 8 R W 00h 46 3 34 1170 4006_C03D UART 7816 Wait Parameter Register B UART2_WP7816B_T0 8 R W 14h 46 3 35 1171 4006_C03D UART 7816 Wait Parameter Regis...

Page 1139: ...aud rate generator is disabled until C2 TE or C2 RE is set for the first time after reset The baud rate generator is disabled when SBR 0 Writing to BDH has no effect without writing to BDL because wri...

Page 1140: ...ted from the UART and the transmitter output is internally connected to the receiver input The transmitter and the receiver must be enabled to use the loop function 0 Normal operation 1 Loop mode wher...

Page 1141: ...its In idle line wakeup an idle character is recognized at anytime the receiver sees 10 11 or 12 1s depending on the M PE and C4 M10 fields 0 Idle character bit count starts after start bit 1 Idle cha...

Page 1142: ...rupt requests 0 IDLE interrupt requests disabled 1 IDLE interrupt requests enabled 3 TE Transmitter Enable Enables the UART transmitter TE can be used to queue an idle preamble by clearing and then se...

Page 1143: ...es inputs to the MCU for generation of UART interrupts or DMA requests This register can also be polled by the MCU to check the status of its fields To clear a flag the status register should be read...

Page 1144: ...idle logic 1 TC is cleared by reading S1 with TC set and then doing one of the following When C7816 ISO_7816E is set enabled this field is set after any NACK signal has been received but prior to any...

Page 1145: ...BKDE is enabled and a LIN Break is detected the OR field asserts if S2 LBKDIF is not cleared before the next data character is received In 7816 mode it is possible to configure a NACK to be returned b...

Page 1146: ...sts Also this register can be polled by the MCU to check the status of these bits This register can be read or written at any time with the exception of the MSBF and RXINV bits which should be changed...

Page 1147: ...V inverts the RxD input for data bits start and stop bits break and idle When C7816 ISO7816E is set enabled only the data bits and the parity bit are inverted 0 Receive data is not inverted 1 Receive...

Page 1148: ...ter To read the 9th bit read the value of UARTx_C3 R8 then read the UARTx_D register 6 T8 Transmit Bit 8 T8 is the ninth data bit transmitted when the UART is configured for 9 bit data format that is...

Page 1149: ...and parity bit are inverted 0 Transmit data is not inverted 1 Transmit data is inverted 3 ORIE Overrun Error Interrupt Enable Enables the overrun error flag S1 OR to generate interrupt requests 0 OR i...

Page 1150: ...ritten first and then the new data on data bus is stored in D the temporary value written by the last write to C3 T8 gets stored in the C3 T8 register Address Base address 7h offset Bit 7 6 5 4 3 2 1...

Page 1151: ...it 7 6 5 4 3 2 1 0 Read MAEN1 MAEN2 M10 BRFA Write Reset 0 0 0 0 0 0 0 0 UARTx_C4 field descriptions Field Description 7 MAEN1 Match Address Mode Enable 1 See Match address operation for more informat...

Page 1152: ...add more timing resolution to the average baud frequency in increments of 1 32 See Baud rate generation for more information 46 3 12 UART Control Register 5 UARTx_C5 Address Base address Bh offset Bi...

Page 1153: ...re stored with a received dataword This register may be read at any time but contains valid data only if there is a dataword in the receive FIFO NOTE The data contained in this register represents add...

Page 1154: ...0 0 0 0 0 UARTx_MODEM field descriptions Field Description 7 4 Reserved This field is reserved This read only field is reserved and always has the value 0 3 RXRTSE Receiver request to send enable All...

Page 1155: ...nd a character If CTS is asserted the character is sent If CTS is deasserted the signal TXD remains in the mark state and transmission is delayed until CTS is asserted Changes in CTS as a character is...

Page 1156: ...nable When this field is set the built in FIFO structure for the transmit buffer is enabled The size of the FIFO structure is indicated by TXFIFOSIZE If this field is not set the transmit buffer opera...

Page 1157: ...FIFO Buffer depth 32 datawords 101 Receive FIFO Buffer depth 64 datawords 110 Receive FIFO Buffer depth 128 datawords 111 Reserved 46 3 17 UART FIFO Control Register UARTx_CFIFO This register provide...

Page 1158: ...interrupt to the host 1 TXOF flag generates an interrupt to the host 0 RXUFE Receive FIFO Underflow Interrupt Enable When this field is set the RXUF flag generates an interrupt to the host 0 RXUF fla...

Page 1159: ...interrupt will be issued to the host only if CFIFO TXOFE is set This flag is cleared by writing a 1 0 No transmit buffer overflow has occurred since the last time the flag was cleared 1 At least one...

Page 1160: ..._TCFIFO field descriptions Field Description 7 0 TXCOUNT Transmit Counter The value in this register indicates the number of datawords that are in the transmit FIFO buffer If a dataword is being trans...

Page 1161: ...XCOUNT Receive Counter The value in this register indicates the number of datawords that are in the receive FIFO buffer If a dataword is being received that is in the receive shift register it is not...

Page 1162: ...lid initial character If an invalid initial character is identified and ANACK is set a NACK is sent All received data is discarded and error flags blocked S1 NF S1 OR S1 FE S1 PF IS7816 WT IS7816 CWT...

Page 1163: ...es not result in the generation of an interrupt 1 The assertion of IS7816 BWT results in the generation of an interrupt 4 INITDE Initial Character Detected Interrupt Enable 0 The assertion of IS7816 I...

Page 1164: ...ansmitted and the leading edge of the next response character has exceeded the programmed value This flag asserts only when C7816 TTYPE 0 This interrupt is cleared by writing 1 0 Wait time WT has not...

Page 1165: ...al NACK detection counter is cleared and the count restarts from zero on the next received NACK This interrupt is cleared by writing 1 0 The number of retries and corresponding NACKS does not exceed t...

Page 1166: ...only when C7816 TTYPE 1 See Wait time and guard time parameters 46 3 27 UART 7816 Wait N Register UARTx_WN7816 The WN7816 register contains a parameter that is used in the calculation of the guard tim...

Page 1167: ...written to only when C7816 ISO_7816E is not set Address Base address 1Eh offset Bit 7 6 5 4 3 2 1 0 Read TXTHRESHOLD RXTHRESHOLD Write Reset 0 0 0 0 0 0 0 0 UARTx_ET7816 field descriptions Field Desc...

Page 1168: ...te Reset 0 0 0 0 0 0 0 0 UARTx_TL7816 field descriptions Field Description 7 0 TLEN Transmit Length This value plus four indicates the number of characters contained in the block being transmitted Thi...

Page 1169: ...816 TTYPE 0 See ATR Duration Time Counter 46 3 32 UART 7816 ATR Duration Timer Register B UARTx_AP7816B_T0 The AP7816B_T0 register contains variables used in the generation of the ATR Duration Timer T...

Page 1170: ...I_H Write Reset 0 0 0 0 0 0 0 0 UARTx_WP7816A_T0 field descriptions Field Description 7 0 WI_H Wait Time Integer High C7816 TTYPE 0 Used to calculate the value used for the WT counter This register fi...

Page 1171: ...0 Read WI_L Write Reset 0 0 0 1 0 1 0 0 UARTx_WP7816B_T0 field descriptions Field Description 7 0 WI_L Wait Time Integer Low C7816 TTYPE 0 Used to calculate the value used for the WT counter This regi...

Page 1172: ...GI Write Reset 0 0 0 0 0 1 1 0 UARTx_WGP7816_T1 field descriptions Field Description 7 4 CWI1 Character Wait Time Integer 1 C7816 TTYPE 1 Used to calculate the value used for the CWT counter It repres...

Page 1173: ...ters 46 4 Functional description This section provides a complete functional description of the UART block The UART allows full duplex asynchronous NRZ serial communication between the CPU and remote...

Page 1174: ...IC TxD IRQ DMA LOGIC INFRARED LOGIC DMA Requests IRQ Requests TxD LOOP CONTROL LOOPS RSRC UART DATA REGISTER UART_D Figure 46 153 Transmitter Block Diagram 46 4 1 1 Transmitter character length The UA...

Page 1175: ...value indicated by TWFIFO TXWATER The transmit driver routine may respond to this flag by writing additional datawords to the transmit buffer using C3 T8 D as space permits See Application information...

Page 1176: ...he idle state even if there is data pending in the UART transmit data buffer To ensure that all the data written in the FIFO is transmitted on the link before clearing C2 TE wait for S1 TC to set Alte...

Page 1177: ...TE during a transmission queues an idle character to be sent after the dataword currently being transmitted Note When queuing an idle character the idle character will be transmitted following the co...

Page 1178: ...ins asserted for the whole time that the transmitter data buffer has any characters RTS deasserts one bit time after all characters in the transmitter data buffer and shift register are completely sen...

Page 1179: ...ta buffer write CTS_B RTS_B C1 in transmission 1 1 Cn transmit characters Figure 46 154 Transmitter RTS and CTS timing diagram Chapter 46 Universal Asynchronous Receiver Transmitter UART K22F Sub Fami...

Page 1180: ...C CONTROL RxD RxD LOOPS RSRC From Transmitter RECEIVER SOURCE CONTROL 7816 LOGIC To TxD INFRARED LOGIC Figure 46 155 UART receiver block diagram 46 4 2 1 Receiver character length The UART receiver ca...

Page 1181: ...ter reception operates slightly differently Upon receipt of the parity bit the validity of the parity bit is checked If C7816 ANACK is set and the parity check fails or if INIT and the received charac...

Page 1182: ...14 RT15 RT16 1 1 1 1 0 0 0 0 0 0 RT10 RT12 RT1 START BIT QUALIFICATION DATA SAMPLING START BIT VERIFICATION Figure 46 156 Receiver data sampling To verify the start bit and to detect noise data recove...

Page 1183: ...is set enabled where the values of RT8 RT9 and RT10 exclusively determine if a start bit exists To verify a stop bit and to detect noise recovery logic takes samples at RT8 RT9 and RT10 The following...

Page 1184: ...ts the noise flag Although the perceived bit time is misaligned the data samples RT8 RT9 and RT10 are within the bit time and data recovery is successful SAMPLES Rx pin input RT CLOCK RT CLOCK COUNT R...

Page 1185: ...T CLOCK 1 1 1 1 0 PERCEIVED AND ACTUAL START BIT LSB RT1 RT1 RT1 RT1 RT1 RT1 RT1 RT1 RT1 RT1 RT2 RT3 RT4 RT5 RT1 RT2 RT3 RT6 RT7 RT8 RT9 RT10 RT11 RT12 RT13 RT14 RT15 RT16 1 1 1 1 1 1 0 Figure 46 160...

Page 1186: ...ere high SAMPLES Rx pin input RT CLOCK RT CLOCK COUNT RESET RT CLOCK 1 1 1 1 0 0 START BIT LSB RT1 RT1 RT1 RT1 RT1 RT1 RT1 RT1 RT1 RT1 RT2 RT3 RT10 RT1 RT2 RT3 1 1 1 1 1 0 0 1 0 1 RT4 RT5 RT6 RT7 RT8...

Page 1187: ...The UART break character detection threshold depends on C1 M C1 PE S2 LBKDE and C4 M10 See the following table Table 46 163 Receive break character detection threshold LBKDE M M10 PE Threshold bits 0...

Page 1188: ...data buffer is full or is overrun If the receiver request to send functionality is disabled the receiver RTS remains deasserted The following figure shows receiver hardware flow control functional ti...

Page 1189: ...sing edge is not seen then the decoder sends a 1 to the receiver If the next bit is a 0 which arrives late then a low bit is detected according to Low bit detection The value sent to the receiver is c...

Page 1190: ...les The maximum percent difference between the receiver count and the transmitter count of a slow 8 bit data character with no errors is 154 147 154 100 4 54 For a 9 bit data character data sampling o...

Page 1191: ...ceiver counts 170 RT cycles at the point when the count of the transmitting device is 176 RT cycles 11 bit times 16 RT cycles The maximum percent difference between the receiver count and the transmit...

Page 1192: ...ion and the receivers for which the message is addressed process the frames that follow Any receiver for which a message is not addressed can set its C2 RWU and return to the standby state C2 RWU rema...

Page 1193: ...red only on a match with either register Address match operation is not supported when C7816 ISO_7816E is set enabled 46 4 3 Baud rate generation A 13 bit modulus counter and a 5 bit fractional fine a...

Page 1194: ...14 531 00000 0 19 209 0 1200 6 1200 0 11 1062 00000 0 9604 5 600 3 600 0 05 2125 00000 0 4800 0 300 0 300 0 00 4250 00000 0 2400 0 150 0 150 0 00 5795 00000 0 1760 1 110 0 110 0 00 Table 46 165 Baud...

Page 1195: ...or 8 bit data characters that is eight bits are memory mapped in D A frame with eight data bits has a total of 10 bits The most significant bit of the eight data bits can be used as an address mark to...

Page 1196: ...cter bits and a tenth internal data bit Note that if C4 M10 is set C1 PE must also be set In this case the tenth bit is the internally generated parity bit The ninth bit can either be used as an addre...

Page 1197: ...4 4 3 2 Eight bit format with parity enabled BIT 0 BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 STOP BIT START BIT START BIT PARITY Figure 46 168 Seven bits of data with LSB first and parity BIT 6 BIT 5 BIT 4...

Page 1198: ...0 PARITY STOP BIT START BIT START BIT BIT 8 ADDRESS MARK Figure 46 175 Nine bits of data with MSB first and parity 46 4 5 Single wire operation Normally the UART uses two pins for transmitting and re...

Page 1199: ...he ISO 7816 protocol is an NRZ single wire half duplex interface The TxD pin is used in open drain mode because the data signal is used for both transmitting and receiving There are multiple subprotoc...

Page 1200: ...essor with an interrupt if IE7816 INITDE is set Additionally the UART will alter S2 MSBF C3 TXINV and S2 RXINV automatically based on the initial character The corresponding initial character and resu...

Page 1201: ...U in length The transmitter must wait for at least two time units ETU after detection of the error signal before attempting to retransmit the character It is assumed that the UART and the device smart...

Page 1202: ...ration and violation detection of these settings On reset the wait time IS7816 WT defaults to 9600 ETUs and guard time GT to 12 ETUs These values are controlled by parameters in the WP7816 WN7816 and...

Page 1203: ...esponding guard time expiring Table 46 169 Wait and guard time calculations Parameter Reset value ETU C7816 TTYPE 0 ETU C7816 TTYPE 1 ETU Wait time WT 9600 WI 480 Not used Character wait time CWT Not...

Page 1204: ...feature is only supported in T 0 mode NOTE The ADT counter starts counting on detection of the complete TS Character It must be noted that by this time exactly 10 ETUs have elapsed since the start bit...

Page 1205: ...e low pulses The infrared submodule receives its clock sources from the UART One of these two clocks are selected in the infrared submodule to generate either 3 16 1 16 1 32 or 1 4 narrow pulses durin...

Page 1206: ...outlines additional details regarding the RXEDGIF interrupt because of its complexity of operation Any of the UART interrupt requests listed in the table can be used to bring the CPU out of Wait mode...

Page 1207: ...the next cycle A rising edge is detected when the input is seen as a logic 0 during one module clock cycle and then a logic 1 during the next cycle 46 6 1 2 Clearing RXEDGIF interrupt request Writing...

Page 1208: ...ments such as procedures to power up or power down the smartcard and when to take those actions are beyond the scope of this description To set up the UART for ISO 7816 operation 1 Select a baud rate...

Page 1209: ...o set C2 RE 0 and C2 TE 0 The software should then adjust 7816 specific and UART generic parameters to match and configure data that was received during the answer on reset period After the new settin...

Page 1210: ...block wait time and character wait times are not violated 46 8 2 Initialization sequence non ISO 7816 To initiate a UART transmission 1 Configure the UART a Select a baud rate Write this value to the...

Page 1211: ...he mode of operation There may be implications that need to be carefully considered This section clarifies the behavior and the resulting implications Regardless of mode if a dataword is received whil...

Page 1212: ...ome older implementations and is therefore supported for legacy reasons Applications that do not require this checking can simply clear S2 LBKDIF without checking the stored value to ensure it is a br...

Page 1213: ...oltage levels of the UART s RTS and CTS signals TRANSMITTER UART RECEIVER TRANSMITTER UART RECEIVER TXD CTS_B RXD RTS_B RXD RTS_B TXD CTS_B Figure 46 180 Ready to receive The transmitter s CTS signal...

Page 1214: ...of a bit time results in a pulse width of 1 6 s 46 8 8 Clearing 7816 wait timer WT BWT CWT interrupts The 7816 wait timer interrupts associated with IS7816 WT IS7816 BWT and IS7816 CWT will automatic...

Page 1215: ...nsidered 1 Various reserved registers and register bits are used such as MSFB and M10 2 This module now generates an error when invalid address spaces are used 3 While documentation indicated otherwis...

Page 1216: ...Application information K22F Sub Family Reference Manual Rev 3 7 2014 1216 Freescale Semiconductor Inc...

Page 1217: ...ts operation in Stop modes Interrupt DMA or polled operation Transmit data register empty and transmission complete Receive data register full Receive overrun parity error framing error and noise erro...

Page 1218: ...ode provided the asynchronous transmit and receive clock remains enabled The LPUART can generate an interrupt or DMA request to cause a wakeup from Stop mode 47 1 2 2 Wait mode The LPUART can be confi...

Page 1219: ...rol Shift Enable Preamble All 1s Break All 0s LPUART Controls TxD TxD Direction TO TxD Pin Logic Loop Control To Receive Data In To TxD Pin Tx Interrupt Request LOOPS RSRC TIE TC TDRE M PT PE TCIE TE...

Page 1220: ...to address outside the valid memory map will generate a bus error LPUART memory map Absolute address hex Register name Width in bits Access Reset value Section page 4002_A000 LPUART Baud Rate Register...

Page 1221: ...a tenth bit to be part of the serial transmission This bit should only be changed when the transmitter and receiver are both disabled 0 Receiver and transmitter use 8 bit or 9 bit data characters 1 R...

Page 1222: ...s input data using the rising and falling edge of the baud rate clock 16 RESYNCDIS Resynchronization Disable When set disables the resynchronization of the received data word when a data one followed...

Page 1223: ...31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R LBKDIF RXEDGIF MSBF RXINV RWUID BRK13 LBKDE RAF TDRE TC RDRF IDLE OR NF FE PF W w1c w1c w1c w1c w1c w1c w1c Reset 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 Bit...

Page 1224: ...ive data not inverted 1 Receive data inverted 27 RWUID Receive Wake Up Idle Detect For RWU on idle character RWUID controls whether the idle character that wakes up the receiver sets the IDLE bit For...

Page 1225: ...ter active sending data a preamble or a break 1 Transmitter idle transmission activity complete 21 RDRF Receive Data Register Full Flag RDRF is set when the receive buffer LPUART_DATA is full To clear...

Page 1226: ...character to be read from LPUART_DATA was received with noise detected within the character To clear NF write logic one to the NF 0 No noise detected 1 Noise detected in the received character in LPUA...

Page 1227: ...ats When reading 9 bit or 10 bit data read R8 before reading LPUART_DATA T9 is the tenth data bit received when the LPUART is configured for 10 bit data formats When writing 10 bit data write T9 befor...

Page 1228: ...is set 26 NEIE Noise Error Interrupt Enable This bit enables the noise flag NF to generate hardware interrupt requests 0 NF interrupts disabled use polling 1 Hardware interrupt requested when NF is se...

Page 1229: ...y clears when an RWU event occurs that is an IDLE event when CTRL WAKE is clear or an address match when CTRL WAKE is set with STAT RWUID is clear NOTE RWU must be set only with CTRL WAKE 0 wakeup on...

Page 1230: ...mode or single wire mode where transmitter outputs are internally connected to receiver input see RSRC bit 6 DOZEEN Doze Enable 0 LPUART is enabled in Doze mode 1 LPUART is disabled in Doze mode 5 RS...

Page 1231: ...tically shifted after a received stop bit therefore resetting the idle count 0 Idle character bit count starts after start bit 1 Idle character bit count starts after stop bit 1 PE Parity Enable Enabl...

Page 1232: ...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R NOISY PARITYE FRETSC RXEMPT IDLINE 0 R9T9 R8T8 R7T7 R6T6 R5T5 R4T4 R3T3 R2T2 R1T1 R0T0 W Reset 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0...

Page 1233: ...ata returned on read is not valid 11 IDLINE Idle Line Indicates the receiver line was idle before receiving the character in DATA 9 0 Unlike the IDLE flag this bit can set for the first character rece...

Page 1234: ...it is clear 15 10 Reserved This field is reserved This read only field is reserved and always has the value 0 9 0 MA1 Match Address 1 The MA1 and MA2 registers are compared to input data addresses whe...

Page 1235: ...itter is idle 3 RXRTSE Receiver request to send enable Allows the RTS output to control the CTS input of the transmitting device to prevent receiver overrun NOTE Do not set both RXRTSE and TXRTSE 0 Th...

Page 1236: ...in CTS as a character is being sent do not affect its transmission 47 3 Functional description The LPUART supports full duplex asynchronous NRZ serial communication and comprises a baud rate generator...

Page 1237: ...in the transmit data buffer Programs store data into the transmit data buffer by writing to the LPUART data register The central element of the LPUART transmitter is the transmit shift register that...

Page 1238: ...ing error LPUART_STAT FE 1 occurs A break character can also be transmitted by writing to the LPUART_DATA register with bit 13 set and the data bits clear This supports transmitting the break characte...

Page 1239: ...f CTS The transmitter s CTS signal can also be enabled even if the same LPUART receiver s RTS signal is disabled 47 3 2 3 Transceiver driver enable The transmitter can use LPUART_RTS as an enable sign...

Page 1240: ...receive data register and the receive data register full LPUART_STAT RDRF status flag is set If LPUART_STAT RDRF was already set indicating the receive data register buffer was already full the overr...

Page 1241: ...has been disabled This improves the reliability of the receiver in the presence of noise or mismatched baud rates It does not improve worst case analysis because some characters do not have any extra...

Page 1242: ...acters 0 1 10 X1 Address match on and address match off IDLE flag set for discarded characters 47 3 3 2 1 Idle line wakeup When wake is cleared the receiver is configured for idle line wakeup In this...

Page 1243: ...the LPUART_STAT RDRF flag In this case the character with the MSB set is received even though the receiver was sleeping during most of this character time 47 3 3 2 3 Data match wakeup When LPUART_CTRL...

Page 1244: ...ress and is compared with the associated MA1 or MA2 register The character is only transferred to the receive buffer and LPUART_STAT RDRF is set if the comparison matches All subsequent characters are...

Page 1245: ...asserted until the transfer is complete even if the transmitter is disabled midway through a data transfer See Transceiver driver enable using LPUART_RTS for more details If the receiver request to s...

Page 1246: ...a 0 which is sent to the receiver The decoder counter is also reset 47 3 3 4 4 High bit detection At OSR oversampling baud rate clocks after the previous rising edge if a rising edge is not seen then...

Page 1247: ...rity and address mark wakeup so the ninth data bit can serve as the wakeup bit and the tenth bit as the parity bit In custom protocols the ninth and or tenth bits can also serve as software controlled...

Page 1248: ...ata to the receiver When LPUART_CTRL TXDIR is set the LPUART_TX pin is an output driven by the transmitter the internal loop back connection is disabled and as a result the receiver cannot receive cha...

Page 1249: ...cted for each one received A narrow low pulse is expected for a zero bit when LPUART_STAT RXINV is cleared while a narrow high pulse is expected for a zero bit when LPUART_STAT RXINV is set This recei...

Page 1250: ...character that caused LPUART_STAT RDRF to be set the error flags noise flag LPUART_STAT NF framing error LPUART_STAT FE and parity error flag LPUART_STAT PF are set at the same time as LPUART_STAT RDR...

Page 1251: ...tion of this chapter NOTE About data lines and audio channels Typically there are one or more data lines for TX and RX sides of the SAI peripheral depending on the device s design Each SAI data line m...

Page 1252: ...ion Frame Sync Control Read FIFO Control FIFO Write FIFO Control Shift Register Bus Clock Audio Clock Bit Clock Bus Clock Transmitter Receiver Synchronous Mode SAI_TX_DATA SAI_TX_BCLK SAI_TX_SYNC SAI_...

Page 1253: ...rame 48 1 3 3 Low leakage modes When entering low leakage modes the Stop Enable TCSR STOPE and RCSR STOPE bits are ignored and the SAI is disabled after completing the current transmit and receive Fra...

Page 1254: ...rite access to an address from offset 0x108 and above will result in a bus error I2S memory map Absolute address hex Register name Width in bits Access Reset value Section page 4002_F000 SAI Transmit...

Page 1255: ..._0000h 48 3 14 1273 4002_F094 SAI Receive Configuration 5 Register I2S0_RCR5 32 R W 0000_0000h 48 3 15 1275 4002_F0A0 SAI Receive Data Register I2S0_RDR0 32 R 0000_0000h 48 3 16 1275 4002_F0C0 SAI Rec...

Page 1256: ...ables the transmitter When software clears this field the transmitter remains enabled and this bit remains set until the end of the current frame 0 Transmitter is disabled 1 Transmitter is enabled or...

Page 1257: ...ffect 1 FIFO reset 24 SR Software Reset When set resets the internal transmitter logic including the FIFO pointers Software visible registers are not affected except for the status registers 0 No effe...

Page 1258: ...IE Sync Error Interrupt Enable Enables disables sync error interrupts 0 Disables interrupt 1 Enables interrupt 10 FEIE FIFO Error Interrupt Enable Enables disables FIFO error interrupts 0 Disables the...

Page 1259: ...scriptions Field Description 31 3 Reserved This field is reserved This read only field is reserved and always has the value 0 2 0 TFW Transmit FIFO Watermark Configures the watermark level for all ena...

Page 1260: ...elay the transmitter is clocked by the pad input as if the clock was externally generated This has the effect of decreasing the data input setup time but increasing the data output valid time The slav...

Page 1261: ...read only field is reserved and always has the value 0 23 17 Reserved This field is reserved This read only field is reserved and always has the value 0 16 TCE Transmit Channel Enable Enables the corr...

Page 1262: ...d that caused the FIFO error to set after the FIFO warning flag has been cleared 27 26 Reserved This field is reserved This read only field is reserved and always has the value 0 25 24 FPACK FIFO Pack...

Page 1263: ...4 MF MSB First Configures whether the LSB or the MSB is transmitted first 0 LSB is transmitted first 1 MSB is transmitted first 3 FSE Frame Sync Early 0 Frame sync asserts with the first bit of the fr...

Page 1264: ...th of less than 8 bits is not supported if there is only one word per frame 15 13 Reserved This field is reserved This read only field is reserved and always has the value 0 12 8 FBT First Bit Shifted...

Page 1265: ...d Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R 0 0 WFP W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 RFP W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I2Sx_T...

Page 1266: ...0 0 0 0 I2Sx_TMR field descriptions Field Description 31 16 Reserved This field is reserved This read only field is reserved and always has the value 0 15 0 TWM Transmit Word Mask Configures whether...

Page 1267: ...the receiver When software clears this field the receiver remains enabled and this bit remains set until the end of the current frame 0 Receiver is disabled 1 Receiver is enabled or receiver has been...

Page 1268: ...No effect 1 FIFO reset 24 SR Software Reset Resets the internal receiver logic including the FIFO pointers Software visible registers are not affected except for the status registers 0 No effect 1 Sof...

Page 1269: ...terrupts 0 Disables interrupt 1 Enables interrupt 10 FEIE FIFO Error Interrupt Enable Enables disables FIFO error interrupts 0 Disables the interrupt 1 Enables the interrupt 9 FWIE FIFO Warning Interr...

Page 1270: ...ld descriptions Field Description 31 3 Reserved This field is reserved This read only field is reserved and always has the value 0 2 0 RFW Receive FIFO Watermark Configures the watermark level for all...

Page 1271: ...clocked by the pad input as if the clock was externally generated This has the effect of decreasing the data input setup time but increasing the data output valid time The slave mode timing from the d...

Page 1272: ...erved This read only field is reserved and always has the value 0 23 17 Reserved This field is reserved This read only field is reserved and always has the value 0 16 RCE Receive Channel Enable Enable...

Page 1273: ...FIFO error to set after the FIFO warning flag has been cleared 27 26 Reserved This field is reserved This read only field is reserved and always has the value 0 25 24 FPACK FIFO Packing Mode Enables p...

Page 1274: ...always has the value 0 4 MF MSB First Configures whether the LSB or the MSB is received first 0 LSB is received first 1 MSB is received first 3 FSE Frame Sync Early 0 Frame sync asserts with the firs...

Page 1275: ...one word per frame 15 13 Reserved This field is reserved This read only field is reserved and always has the value 0 12 8 FBT First Bit Shifted Configures the bit index for the first bit received for...

Page 1276: ...4d i where i 0d to 0d Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 R 0 WFP W Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 R 0 0 RFP W Reset 0 0 0 0 0 0 0 0 0...

Page 1277: ...receive FIFO for the corresponding word in the frame 0 Word N is enabled 1 Word N is masked 48 3 19 SAI MCLK Control Register I2Sx_MCR The MCLK Control Register MCR controls the clock source and direc...

Page 1278: ...k 1 selected 10 MCLK divider input clock 2 selected 11 MCLK divider input clock 3 selected 23 0 Reserved This field is reserved This read only field is reserved and always has the value 0 48 3 20 SAI...

Page 1279: ...er clock is used to generate the bit clock when the receiver or transmitter is configured for an internally generated bit clock The transmitter and receiver can independently select between the bus cl...

Page 1280: ...ger divide ratios and will approach 50 50 for large non integer divide ratios There is no cycle to cycle jitter or duty cycle variance when the divide ratio is an integer or half integer otherwise the...

Page 1281: ...t on system reset The SAI has a software reset and a FIFO reset 48 4 2 1 Software reset The SAI transmitter includes a software reset that resets all transmitter internal logic including the bit clock...

Page 1282: ...eration In synchronous mode the receiver is enabled only when both the transmitter and receiver are enabled It is recommended that the transmitter is the last enabled and the first disabled If the rec...

Page 1283: ...frame or asserts one bit early Assert for a duration between 1 bit clock and the first word length Frame length from 1 to 16 words per frame Word length to support 8 to 32 bits per word First word len...

Page 1284: ...vidual write Note that 8 bit writes should only be used when transmitting up to 8 bit data and 16 bit writes should only be used when transmitting up to 16 bit data Writes to a TDR are ignored if the...

Page 1285: ...ded at the start of each frame and after every second unmasked transmit word The first word transmitted is taken from 16 bit word at byte offset 0 first bit is selected by TCFG5 FBT must be configured...

Page 1286: ...from stop mode 48 4 7 1 FIFO request flag The FIFO request flag is set based on the number of entries in the FIFO and the FIFO watermark configuration The transmit FIFO request flag is set when the nu...

Page 1287: ...t order the transmitter will continue from the same word number in the frame that caused the FIFO to underflow but only after new data has been written to the transmit FIFO Software should still clear...

Page 1288: ...When the sync error flag is set the transmitter or receiver continues checking for frame sync assertion when idle or at the end of each frame The sync error flag can generate an interrupt only 48 4 7...

Page 1289: ...sponding Port Control and Interrupt module for that pin is enabled Efficient bit manipulation of the general purpose outputs is supported through the addition of set clear and toggle write only regist...

Page 1290: ...escription I O PORTA31 PORTA0 General purpose input output I O PORTB31 PORTB0 General purpose input output I O PORTC31 PORTC0 General purpose input output I O PORTD31 PORTD0 General purpose input outp...

Page 1291: ...ch port are implemented on each device See the chapter on signal multiplexing for the number of GPIO ports available in the device 49 2 Memory map and register definition Any read or write access to t...

Page 1292: ...ort Clear Output Register GPIOC_PCOR 32 W always reads 0 0000_0000h 49 2 3 1294 400F_F08C Port Toggle Output Register GPIOC_PTOR 32 W always reads 0 0000_0000h 49 2 4 1295 400F_F090 Port Data Input Re...

Page 1293: ...n registers associated with pins not available in your selected package All unbonded pins not available in your package will default to DISABLE state for lowest power consumption Address Base address...

Page 1294: ...in PDORn is set to logic 1 49 2 3 Port Clear Output Register GPIOx_PCOR This register configures whether to clear the fields of PDOR Address Base address 8h offset Bit 31 30 29 28 27 26 25 24 23 22 21...

Page 1295: ...ailable in your selected package All unbonded pins not available in your package will default to DISABLE state for lowest power consumption Address Base address 10h offset Bit 31 30 29 28 27 26 25 24...

Page 1296: ...a digital function and the corresponding Port Control and Interrupt module is enabled The Port Data Input registers return the synchronized pin state after any enabled digital filter in the Port Contr...

Page 1297: ...o facilitate efficient bit manipulation on the general purpose outputs pin data set pin data clear and pin data toggle registers exist to allow one or more outputs within one port to be set cleared or...

Page 1298: ...Functional description K22F Sub Family Reference Manual Rev 3 7 2014 1298 Freescale Semiconductor Inc...

Page 1299: ...n test mode Testing is performed via a boundary scan technique as defined in the IEEE 1149 1 2001 standard All data input to and output from the JTAGC block is communicated in serial format 50 1 1 Blo...

Page 1300: ...upports several IEEE 1149 1 2001 defined instructions as well as several public and private device specific instructions Refer to Table 50 3 for a list of supported instructions Bypass register bounda...

Page 1301: ...ction register while the JTAGC is enabled Supported test instructions include EXTEST HIGHZ CLAMP SAMPLE and SAMPLE PRELOAD Each instruction defines the set of data register s that may operate and inte...

Page 1302: ...Clock Input TCK is an input pin used to synchronize the test logic and control register access through the TAP 50 2 2 TDI Test data input Test Data Input TDI is an input pin that receives serial test...

Page 1303: ...ogic Reset TAP controller states Synchronous entry into the Test Logic Reset state results in the IDCODE instruction being loaded on the falling edge of TCK Asynchronous entry into the Test Logic Rese...

Page 1304: ...he PIN mirrors bits 9 0 of the SIM_SDID REVID field Please see the SIM_SDID register description for more detail DC Design Center Indicates the design center Value is 0x2C PIN Part Identification Numb...

Page 1305: ...selected register starting with the least significant bit as illustrated in the following figure This applies for the instruction register test data registers and the bypass register Selected Registe...

Page 1306: ...DR EXIT1 DR EXIT1 IR PAUSE DR PAUSE IR EXIT2 IR EXIT2 DR UPDATE DR UPDATE IR 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Figure 50 4 IEEE 1149 1 2001 TAP controller finite state ma...

Page 1307: ...9 1 2001 standard for more details All undefined opcodes are reserved Table 50 3 4 bit JTAG instructions Instruction Code 3 0 Instruction summary IDCODE 0000 Selects device identification register for...

Page 1308: ...nstruction has two functions The SAMPLE portion of the instruction obtains a sample of the system data and control signals present at the MCU input pins and just before the boundary scan register cell...

Page 1309: ...can register using the SAMPLE PRELOAD instruction before the selection of EXTEST EXTEST asserts the internal system reset for the MCU to force a predictable internal state while performing external bo...

Page 1310: ...n The boundary scan register consists of this shift register chain and is connected between TDI and TDO when the EXTEST SAMPLE or SAMPLE PRELOAD instructions are loaded The shift register chain contai...

Page 1311: ...roller chapter In Device mode IRC48 operation section updated step 5 of IRC48 initialization code sequence to The USB clock source must choose the output of the divided clock by setting SIM_SOPT2 USBS...

Page 1312: ...K22F Sub Family Reference Manual Rev 3 7 2014 1312 Freescale Semiconductor Inc...

Page 1313: ...limitation consequential or incidental damages Typical parameters that may be provided in Freescale data sheets and or specifications can and do vary in different applications and actual performance m...

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