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NO:

W90P710 Programming Guide

VERSION:

2.1

PAGE:

80

The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed,
distributed or reproduced without permission from Winbond.

Table No.: 1200-0003-07-A

6.5.4 Add/Remove Transfer Descriptors

The diagram of

Endpoint Descriptor

list linked with

Transfer Descriptor

queue is shown inFigure

10-1. The

Transfer Descriptor

queue of an

ED

is linked by its

HeadP

and

TailP

field.

According to OpenHCI specification, if

HeadP

is equal to

TailP

, then the

TD

queue is configured

as empty. In Figure 10-2, the

HeadP

and

TailP

pointer of last

ED

has pointed to the same

Transfer

Descriptor

, that is, the

TD

queue of this

ED

is empty. The

TD

there under the

ED

is a dummy

TD

.

While creating a new

ED

,

HCD

must also create a dummy

TD

for it, and let both

HeadP

and

TailP

pointer point to this dummy

TD

.

To add a new

TD

into the

TD

queue,

HCD

can use the dummy

TD

.

HCD

writes information and

data buffer link to the dummy

TD

, and creates a new dummy

TD

. This can be accomplished by the

following steps :

1. Writing

TD

information and data buffer link to the current dummy

TD

2. Creating a new dummy

TD

3. Let the

NextTD

of the current

TD

point to the new dummy

TD

4. Let TailP of

ED

point to the new dummy

TD

Figure 6-5 ED list and TD queue

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Содержание W90P710

Страница 1: ...1 The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 1200 0003 07 A W90P...

Страница 2: ...operty of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 1200 0003 07 A Revision History Revision Date Comment 1 0 08 30 2005 Initial...

Страница 3: ...ller 19 1 1 7 USB Device Controller 19 1 1 8 SDIO Host Controller 19 1 1 9 LCD Controller 20 1 1 10 2 Channel AC97 I2S Audio Codec Host Interface 21 1 1 11 UART 21 1 1 12 Timers 21 1 1 13 Advanced Int...

Страница 4: ...Overview 35 3 2 Block Diagram 36 3 3 Registers 38 3 4 Functional Descriptions 38 3 4 1 On Chip RAM 38 3 4 2 Non Cacheable Area 39 3 4 3 Cache Flushing 39 3 4 4 Cache Enable and Disable 39 3 4 5 Cache...

Страница 5: ...ansfer 66 5 4 9 Demand Mode Transfer 66 6 USB Host Controller 68 6 1 Overview 68 6 2 Registers Map 69 6 3 Block Diagram 70 6 4 Data Structures 71 6 4 1 Endpoint Descriptor ED Lists 72 6 4 2 Transfer D...

Страница 6: ...buffer 106 8 4 3 Move data from SDIO host controller buffer to SDRAM 106 8 5 SD Host Interface 106 8 5 1 Send Command to SD MMC Card 106 8 5 2 Get Response from SD MMC Card 107 8 5 3 SD MMC to Buffer...

Страница 7: ...d AC97 Registers 132 10 4 3 Write AC97 Registers 134 10 4 4 AC97 Playback 135 10 4 5 AC97 Record 137 10 5 I2S Interface 138 10 5 1 I2S Play 138 10 5 2 I2S Record 140 11 UART 142 11 1 Overview 142 11 2...

Страница 8: ...Priority Scheme 171 14 General Purpose Input Output GPIO 174 14 1 Overview 174 14 2 Register Map 176 14 3 Functional Description 177 14 3 1 Multiple Functin Setting 177 14 3 2 GPIO Output Mode 178 14...

Страница 9: ...Transfer 202 17 4 4 Data Transfer 203 17 4 5 Below list Some Examples of I2C Data Transaction 203 18 Universal Serial Interface 209 18 1 Overview 209 18 2 Block Diagram 210 18 3 Register Map 210 18 4...

Страница 10: ...0003 07 A 20 3 Register Map 223 20 4 Functional Description 223 20 4 1 KPI Interface Programming Flow 224 20 4 2 KPI Low Power Mode Configuration 225 21 PS 2 Host Interface Controller 227 21 1 Overvi...

Страница 11: ...pt Service Routine 57 Figure 5 1 GDMA Block Diagram 59 Figure 5 2 The bit fields of the GDMA control register 61 Figure 5 3 GDMA operations 62 Figure 5 4 Software GDMA Transfer 64 Figure 6 1 Endpoint...

Страница 12: ...ion Sequence 158 Figure 12 3 Timer Interrupt Service Routine 159 Figure 12 4 Enable Watchdog Timer 161 Figure 12 5 Watchdog Timer ISR 162 Figure 13 1 AIC block diagram 164 Figure 13 2 Source Control R...

Страница 13: ...all not be disclosed distributed or reproduced without permission from Winbond Table No 1200 0003 07 A Figure 20 3 KPI set Wake Up in system low power mode flowchart 226 Figure 21 1 Key map of PS 2 ke...

Страница 14: ...table 119 Table 9 5 STN 16 leve gray number relative Time based dithering 120 Table 9 6 BSWP 0 HSWP 0 125 Table 9 7 BSWP 0 HSWP 1 125 Table 9 8 BSWP 0 HSWP 0 125 Table 9 9 BSWP 1 HSWP 0 126 Table 10 1...

Страница 15: ...tive applications The W90P710 offers a 4K byte I cache SRAM a 4K byte D cache SRAM and one MACs of Ethernet controller that reduces total system cost A color LCD controller is built in to support blac...

Страница 16: ...roduced without permission from Winbond Table No 1200 0003 07 A Figure 1 1 W90P710 Functional Block Diagram On the following chapters programming note of each chapter will be described in detailed Cha...

Страница 17: ...0003 07 A Chapter 8 SDIO Host Controller Chapter 9 LCD Controller Chapter 10 Audio Controller Chapter 11 UART Chapter 12 Timers Chapter 13 Advance Interrupt Controller Chapter 14 GPIO Chapter 15 Real...

Страница 18: ...rnal Bus Interface 8 16 32 bit external bus support for ROM SRAM flash memory SDRAM and external I Os Support for SDRAM Programmable access cycle 0 7 wait cycle Four word depth write buffer Cost effec...

Страница 19: ...in 8 bit 16 bit or 32 bit data transfers 4 data burst mode 1 1 6 USB Host Controller USB 1 1 compliant Compatible with Open HCI 1 0 specification Supports low speed and full speed devices Build in DMA...

Страница 20: ...ts 4096 12bpp color for Color STN LCD panel Virtual coloring method Frame Rate Control 16 level Anti flickering method Time based Dithering TFT LCD Display Supports Sync type TFT LCD and Sync type Hig...

Страница 21: ...ates 1 or 2 stop bits Odd or even parity Break generation and detection Parity overrun and framing error detection X16 clock mode Support for Bluetooth IrDA and Micro printer control 1 1 12 Timers Two...

Страница 22: ...ode selectable Recognize leap year automatically Day of the week counter Frequency compensate register FCR Beside FCR all clock and alarm data expressed in BCD code Support tick time interrupt 1 1 16...

Страница 23: ...ellation Start Stop Repeated Start Acknowledge generation Start Stop Repeated Start detection Bus busy detection Supports 7 bit addressing mode Software mode I2 C 1 1 18 Universal Serial Interface USI...

Страница 24: ...t Programmable debounce time One or two keys scan with interrupt and three keys reset function Support low power mode wakeup function 1 1 21 PS2 Host Interface Controller APB slave consisted of PS2 pr...

Страница 25: ...SH SDRAM and External I O devices The EBI has seven chip selects to select one ROM FLASH bank two SDRAM banks and four External I O banks and 25 bit address bus It supports 8 bit 16 bit and 32 bit ext...

Страница 26: ...not be disclosed distributed or reproduced without permission from Winbond Table No 1200 0003 07 A 2 2 Block Diagram 2 2 1 SDRAM interface Figure 2 1 SDRAM Interface MCLK MCKE nSCS 1 0 nSRAS nSCAS nSW...

Страница 27: ...rnal I O 2 control register 0x0000 0000 EXT3CON 0xFFF0 1024 R W External I O 3 control register 0x0000 0000 CKSKEW 0xFFF0 1F00 R W Clock skew control register for testing 0xXXXX 0038 2 4 Functional De...

Страница 28: ...0 REFMOD 1 CLKEN 0 REFRAT don t care 2 4 2 ROM Flash control register ROM Flash control register is used to control the configuration of the boot ROM In this register the size base address access typ...

Страница 29: ...the software has the responsibility to correct the setting boot up program should configure the of ROM Flash control register to let it work correctly after boot The ROM Flash interface is designed f...

Страница 30: ...won t issue a mode register set command to SDRAM and the setting will be invalid The SDRAM controller offers auto pre charge mode of SDRAM for SDRAM bank0 1 If this mode is enabled the SDRAM will iss...

Страница 31: ...s after remapping boot FLASH ROM base address Boot FLASH ROM 256KB 0x00000000 0x00040000 0x7FFFFFFF SDRAM BANK 1 0x00000000 0x02000000 SDRAM BANK 0 Boot FLASH ROM 256KB 0x04000000 0x7FFFFFFF Before In...

Страница 32: ...this example is as Figure 2 4 In general the memory remapping only needs to be preformed once at reset Thus the reset value of SDCONF0 is used to check if the system has been initialized If the system...

Страница 33: ...just paranoid MRS w1 cpsr BIC w1 w1 0x1F ORR w1 w1 0xD3 MSR cpsr_fc w1 Configure the EBI controller to remap the flash The EBI Control Registers must be set using store multiples Set up a stack in int...

Страница 34: ...target values into the control registers ADRL r0 label SystemInitData LDMIA r0 r1 r6 LDR r0 EBICON Now run critical jump code STMIA r0 r1 r6 MOV pc lr label EndSysMapJump Now running from new PROM lo...

Страница 35: ...f cache is enabled the CPU tries to fetch instructions from I cache instead of external memory Similarly the CPU tries to read data from D cache instead of external memory But note that the CPU will w...

Страница 36: ...Diagram Figure 3 1 Instruction Cache Organization Block Diagram x x WS INDEX 7 0 1 2 3 4 10 11 30 31 Tag 20 Non cacheable Control bit L V Way1 Tag0 Way1 Tag1 Way1 Tag127 L V L V V L Way0 Tag0 Way0 Ta...

Страница 37: ...A Figure 3 2 Data Cache Organization Block Diagram x x WS INDEX 7 0 1 2 3 4 10 11 30 31 Tag 20 Non cacheable Control bit L V Way1 Tag0 Way1 Tag1 Way1 Tag127 L V L V V L Way0 Tag0 Way0 Tag1 Way0 Tag12...

Страница 38: ...R W Cache configuration register 0x0000 0000 CAHCON 0xFFF0 2004 R W Cache control register 0x0000 0000 CAHADR 0xFFF0 2008 R W Cache address register 0x0000 0000 3 4 Functional Descriptions 3 4 1 On C...

Страница 39: ...d set bit will be cleared to 0 automatically The detail description of each bit filed can be found in W90P710 specification 3 4 3 Cache Flushing To prevent unpredictable error it s better to flush cac...

Страница 40: ...D Cache This guarantees the quick access to these critical sections Lockdown operation can be performed with a granularity of one cache line 4 words The smallest size which can be locked down is 4 wor...

Страница 41: ...ne and unlock all The unlock line operation is performed on a cache line granularity In case the line is found in the cache it is unlocked and starts to operate as a regular valid cache line In case t...

Страница 42: ...on for Ethernet MAC address recognition Transmit FIFO Receive FIFO TX RX state machine controller and status controller The EMC only supports RMII Reduced MII interface to connect with PHY operating o...

Страница 43: ...nbond Table No 1200 0003 07 A 4 2 Block Diagram Figure 4 1 EMC Block Diagram AHB Bus Master AHB Bus Slave Register Files MII Management State Machine MDC MDIO TxDMA State Machine RxDMA State Machine T...

Страница 44: ...W CAM6 Least Significant Word Register 0x0000 0000 CAM7M 0xFFF0 3040 R W CAM7 Most Significant Word Register 0x0000 0000 CAM7L 0xFFF0 3044 R W CAM7 Least Significant Word Register 0x0000 0000 CAM8M 0...

Страница 45: ...R W Missed Packet Count Register 0x0000 7FFF MRPC 0xFFF0 30BC R MAC Receive Pause Count Register 0x0000 0000 MRPCC 0xFFF0 30C0 R MAC Receive Pause Current Count Register 0x0000 0000 MREPC 0xFFF0 30C4...

Страница 46: ...roperty of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 1200 0003 07 A 6 The start address of descriptor and data buffer are sugges...

Страница 47: ...escriptors Write the start address of allocated Rx Buffer Descriptors to RXDLSA also initialized Rx software pointer Set ownership bits of each descriptor to DMA Allocate memory for Rx data buffers 4...

Страница 48: ...and let Tx software pointer point to this address 3 Set ownership bits of each descriptor to CPU 4 Allocate memory to save frame data and write the address to data buffer start address field of Tx des...

Страница 49: ...ated Tx Buffer Descriptors to TXDLSA also initialized Tx software pointer Set ownership bits of each descriptor to CPU Allocate memory for Tx data buffers 4 Bytes boundary and write the address of dat...

Страница 50: ...6 Read data from MIID register 7 Finish the read command 1 Write data to MIID register 2 Set appropriate MDCCR 3 Set PHYAD and PHYRAD 4 Set Write to 1 b1 5 Set bit BUSY to 1 b1 to send a MII manageme...

Страница 51: ...xt page available 13 Remote fault 10 Flow control support 09 100BASE T4 support 08 100BASE TX full duplex support 07 100BASE TX half duplex support 06 10BASE T full duplex support 05 10BASE T half dup...

Страница 52: ...1 Fill the destination MAC address to CAM 13 2 Fill the source MAC address to CAM 14 3 Fill length type 0x8808 opcode 0x0001 and operand timeslot to CAM 15 4 Set SDPZ bit in MCMDR 5 Wait control paus...

Страница 53: ...Buffer Descriptor Pointer Check ownership bits CPU Run out of Descriptors Exception Handling Allocate data buffer for storing transmitting packets set the start address of data buffer to Data Buffer...

Страница 54: ...2 Tx Interrupt Service Routine 1 Get and check status in MISTA 2 Set software reset bit in FIFOTHD and re initialize MAC if bus error occur Do the following step if no error occur 3 Get status from t...

Страница 55: ...terrupt Service Routine Flow Check status of MISTA Bus Error Set Software Reset bit in FIFOTHD to reset MAC Get Status from Tx Buffer Descriptor pointed by Tx S W pointer TXCP bit set Free data buffer...

Страница 56: ...t software reset bit in FIFOTHD and re initialize MAC if bus error occur Do the following step if no error occur 3 Get ownership from the descriptor of Rx software pointer Do the following step if own...

Страница 57: ...ror RXGD Copy the received data to buffer provided by upper protocol layer Change ownership bits to DMA Update the Rx S W descriptor pointer to next descriptor Rx S W Descriptor pointer the same as CR...

Страница 58: ...k mode a single GDMA request will make all of the data to be transferred The data transfer can be started after write the control register or receive an external DMA request nXDREQ The GDMA will try t...

Страница 59: ...Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 1200 0003 07 A 5 2 Block Diagram Figure 5 1 GDMA Block Diagram GDMA Channel 0 nDREQ nD...

Страница 60: ...ter 0x0000 0000 GDMA_CTL1 0xFFF0 4020 R W Channel 1 Control Register 0x0000 0000 GDMA_SRCB1 0xFFF0 4024 R W Channel 1 Source Base Address Register 0x0000 0000 GDMA_DSTB1 0xFFF0 4028 R W Channel 1 Dest...

Страница 61: ...stination base address register GDMA_DSTB is used to set the starting address where the source data to be stored The number of the GDMA transfer is set by programming the transfer count register GDMA_...

Страница 62: ...direction fixing bust bus lock transfer width block mode interrupt are set here Clear TC Transfer complete End Clean control register Set source address If the SOFTREQ was not self clean in the previ...

Страница 63: ...ration to continue 5 4 4 GDMA operation started by software The GDMA can be configured as software mode to perform memory to memory transfer In this mode the transfer operation starts as soon as the s...

Страница 64: ...gs SABNDERR and DABNDERR will be set Figure 5 4 shows an example code for software GDMA transfer Figure 5 4 Software GDMA Transfer d e f i n e B A S E 0 x c 0 0 0 0 0 0 0 d e f i n e G D M A _ S R C B...

Страница 65: ...completed the current source destination and transfer count status can be read from current status registers These current status registers are GDMA_CSRC GDMA_CDST and GDMA_CTNT respectively However...

Страница 66: ...the bit SOFTREQ is set the GDMA begins to transfer data After the numbers of data specified on register GDMA_TCNT have been transferred the GDMA set the bit TC and generates an interrupt if it is enab...

Страница 67: ...ed without permission from Winbond Table No 1200 0003 07 A When nXDREQ is active and GDMA gets the bus in Demand mode GDMA controller holds the system bus until the nXDREQ signal becomes non active Th...

Страница 68: ...eripheral devices The attached peripherals share USB bandwidth through a host scheduled token based protocol Peripherals may be attached configured used and detached while the host and other periphera...

Страница 69: ...er 0x0000 0000 HcBulkCurrentED 0xFFF0 502C R W Host Controller Bulk Current ED Register 0x0000 0000 HcDoneHead 0xFFF0 5030 R W Host Controller Done Head Register 0x0000 0000 HcFmInterval 0xFFF0 5034 R...

Страница 70: ...shall not be disclosed distributed or reproduced without permission from Winbond Table No 1200 0003 07 A 6 3 Block Diagram USB Host Controller USB Interface Host Controller AHB Interface AHB Slave AH...

Страница 71: ...e communication method for HC initiated communication with the Host Controller Driver There are several events that may trigger an interrupt from the Host Controller Each specific event sets a specifi...

Страница 72: ...st Controller fulfills USB transfers by classifying Endpoints into four types of Endpoint Descriptor lists The Control ED list is pointed by HcControlHeadED register the Bulk ED list is pointed by HcB...

Страница 73: ...s polling interval Interrupt ED list which is also a part of each Interrupt ED list You may have no any 1ms polling interval Interrupt EDs in some of the real scenes If it was the case then you will h...

Страница 74: ...3 Buffer End BE Figure 6 3 Isochronous Transfer Descriptor Format 3 2 2 2 2 2 2 2 1 1 1 1 0 0 0 1 8 7 6 4 3 1 0 6 5 2 1 5 4 0 Dword 0 CC FC DI SF Dword 1 Buffer Page 0 BP0 Dword 2 NextTD 0 Dword 3 Buf...

Страница 75: ...able 6 1 HCCA Host Controller Communication Area Offset Size bytes Name Description 0 128 HccaInterrruptTable These 32 Dwords are pointers to interrupt EDs 0x80 2 HccaFrameNumber Contains the current...

Страница 76: ...ue of HostControllerReset become 0 3 Allocate and create all necessary list structures and memory blocks including HCCA and initialize all driver maintained lists including InterruptTable of HCCA Note...

Страница 77: ...AIC Advanced Interrupt Controller USB interrupt which is IRQ9 13 Connect Hub device driver 6 5 2 USB States The Host Controller has four USB states visible to the Host Controller Driver via the Operat...

Страница 78: ...state Conditions USBRESET Hardware Reset USBRESET USBOPERATIONAL Writing 0x2 to HostControllerFunctionalState USBSUSPEND 1 Writing 0x3 to HostControllerFunctionalState 2 Issue a Software Reset command...

Страница 79: ...t ED in an ED list The NextED of the last Endpoint Descriptor must points to zero to signify the end of an ED list To add an Endpoint Descriptor to an ED list HCD should write physical address of the...

Страница 80: ...figured as empty In Figure 10 2 the HeadP and TailP pointer of last ED has pointed to the same Transfer Descriptor that is the TD queue of this ED is empty The TD there under the ED is a dummy TD Whil...

Страница 81: ...follow the following steps to remove a TD 1 Modify the HeadP pointer of the Endpoint Descriptor HC always service the first TD of the TD queue to link to the next TD HC can obtain the link of the next...

Страница 82: ...can clear Halted bit and enable processing on the endpoint again 6 5 5 IRP Processing The data structure of IRP is operation system dependent Host Controller driver should be able to interpret the con...

Страница 83: ...P is 9KB then HCD will generate three TDs for this IRP Because OHCI handles the data toggles by itself it just deed to set the toggle bits for the first TD The data toggle setting of the subsequent TD...

Страница 84: ...ating system several isochronous packets to be transferred may be carried in a single IRP HCD must prepare appropriate Isochronous TDs for these isochronous packets For example in Linux s implementati...

Страница 85: ...Head to HccaDoneHead On this interrupt HCD can obtain the TD done queue by reading HccaDoneHead HCD may first reverse the done queue by traveling the done queue because the TDs were retired in stack o...

Страница 86: ...this interrupt when it detects a system error not related to USB or an error that cannot be reported in any other way HCD may try to reset Host Controller in this case 6 5 6 6 FrameNumberOverflow Inte...

Страница 87: ...wing is an example implementation of Host Controller interrupt service routine VOID hc_interrupt int vector OHCI_T ohci _W90P710 _OHCI OHCI_REGS_T regs ohci regs INT ints _InUsbInterrupt 1 ints ohci r...

Страница 88: ...e Done Queue is built by the Host Controller and referred to by the HcDoneHead register No matter successful or failed the retired Transfer Descriptors must be put into the Done Queue by Host Controll...

Страница 89: ...st_hc if TD_CC_GET UINT32 td_list hwINFO urb_priv URB_PRIV_T td_list urb hcpriv TD_CompletionCode TD_CC_GET UINT32 td_list hwINFO if td_list ed hwHeadP 0x1 if urb_priv td_list index 1 urb_priv length...

Страница 90: ...may collect data received by Host Controller or do nothing it depends on the implementation In addition to invoke complete routine HCD may release the IRP or re submit the IRP if it is the Interrupt T...

Страница 91: ...te 1 to bit 16 to turn off power to all ports ClearRemoteWakeupEnable write 1 to bit 31 to disable device remote wakeup In addition the HcRhStatus register also indicates the following status OverCurr...

Страница 92: ...ableStatus bit 1 indicate whether the port is enabled or disabled PortSuspendStatus bit 2 indicate the port is suspended or not PortResetStatus bit 4 indicate the Root Hub is asserting reset signal on...

Страница 93: ...ntercepted Refer to the following code static INT sohci_submit_urb URB_T urb some code assertted here handle a request to the virtual root hub if usb_pipedevice pipe ohci rh devnum return rh_submit_ur...

Страница 94: ...use as described below z EP0 the default endpoint uses control transfer In Out to handle configuration and control functions required by the USB specification Maximum packed size is 16 bytes z EPA de...

Страница 95: ...0x0000 0000 USB_VCMD 0xFFF0 6004 R W USB class or vendor command register 0x0000 0000 USB_IE 0xFFF0 6008 R W USB interrupt enable register 0x0000 0000 USB_IS 0xFFF0 600C R USB interrupt status registe...

Страница 96: ...NFO 0xFFF0 6064 R W USB endpoint B information register 0x0000 0000 EPB_CTL 0xFFF0 6068 R W USB endpoint B control register 0x0000 0000 EPB_IE 0xFFF0 606C R W USB endpoint B Interrupt Enable register...

Страница 97: ...mand decode 5 Set bits RST_ENDI and RSTI of USB_IE register to enable the reset interrupt 6 Set bits CDII and CDOI of USB_IE register to enable the control data in and control data out interrupt 7 Set...

Страница 98: ...g 0x20400012 to register EPB_INFO Note This configuration must be consistent with configuration interface and endpoint descriptors 2 Enable endpoint interrupts by configure register EPx_IE according t...

Страница 99: ...inpw REG_USB_EPB_IS if Irq USB_EPB_DMA USB_ISR_EPB_DMA_Complete else if Irq inpw REG_USB_EPC_IS if Irq USB_EPC_DMA USB_ISR_EPC_DMA_Complete else if Note If Reset End interrupt is generated ISR must cl...

Страница 100: ...TAx 2 Parse vendor command 3 Set flag according to the command 4 Set bit SDO_RD of USB_ENG 1 Get data from USB_ODATAx according to the command get in previous interrupt 2 Parse data of class or vendor...

Страница 101: ...ecute the relative sub interrupt service routine 5 The control data in FIFO is the registers USB_IDATA0 USB_IDATA3 total 16 bytes If the device descriptor length is over 16 bytes the programmer should...

Страница 102: ...al the USBD hardware such as interrupt enable refer to initialization section 10 4 1 4 After finish the above steps plug the USBD into the host 5 The host will ask the descriptors such as device confi...

Страница 103: ...IO Host Controller of W90P710 supports Secure Digital interface This interface can directly connect to MMC SD SDIO cards The SDIO host controller also supports DMA function to reduce the intervention...

Страница 104: ...ital Interface Control Signals Data Path Address Path 8 3 Registers Register Offset R W Description Reset Value FMI Registers 6 SDGCR 0xFFF0 7000 R W SD Global Control Register 0x0000 0000 SDDSA 0x FF...

Страница 105: ...0 0x FFF0 75FC R W Flash Buffer 0 Undefined FB1_0 FB1_127 0x FFF0 7800 0x FFF0 79FC R W Flash Buffer 1 Undefined 8 4 SDIO Host Controller Accessing data through SDIO host controller interface takes tw...

Страница 106: ...ISR register 8 4 3 Move data from SDIO host controller buffer to SDRAM 1 Set RdSel bit of SDGCR register to select buffer for use Set 000 is use buffer0 and set 100 is use buffer1 2 Set SDBCR register...

Страница 107: ...1 2 Set SDBLEN register to 0x1FF One block is 512 bytes The value of this register should be count 1 3 Send READ_SINGLE_BLOCK command to the card 4 Set DI_EN bit of SDICR register to enable data input...

Страница 108: ...ission from Winbond Table No 1200 0003 07 A 9 LCD Controller 9 1 1 Overview The main purpose of LCD Controller is used to display the video OSD raw data to external display device It supports common p...

Страница 109: ...g Guide VERSION 2 1 PAGE 109 The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Ta...

Страница 110: ...r count register 0000 0000 FIFO2DREQCNT 0xFFF0 803C R W FIFO2 data request transfer count register 0000 0000 FIFO1CURADR 0xFFF0 8040 R FIFO1 current access address 0000 0000 FIFO2CURADR 0xFFF0 8044 R...

Страница 111: ...0000 0000 LCD Timing Generation LCDTCON1 0xFFF0 80B0 R W LCD Timing Control Register1 0000 0000 LCDTCON2 0xFFF0 80B4 R W LCD Timing Control Register2 0000 0000 LCDTCON3 0xFFF0 80B8 R W LCD Timing Cont...

Страница 112: ...disclosed distributed or reproduced without permission from Winbond Table No 1200 0003 07 A 9 1 2 Programming Procedure This section describes the software programming flow for LCD controller Follow...

Страница 113: ...DINTENB LCDINTC Use OSD function Yes Configure OSD function OSDOVCN OSDKYP OSDKYM Configure LCD Timing Generatio n LCDTCON 1 LCDTCON 2 LCDTCON 3 LCDTCON 4 LCDTCON 5 LCDTCON 6 No Use STN pane l Yes Con...

Страница 114: ...ing flow for LCD controller 2 B Configure the starting address and the stride of frame buffer and FIFO FIFO1PRM FIFO2PRM F1 SADDR F2 SADDR F1 DREQCNT F2 DREQCNT F1 REALCULCNT F2 REALCULCNT Configure h...

Страница 115: ...LCD Controller The user can configure the common settings of this controller by programming register LCDCON Function of each field is explained as Table 9 2 Table 9 2 Register LCDCON Bit Map Register...

Страница 116: ...o LCD uses 8 bit interface 5 TFT Type Select 0 Sync type High Color TFT LCD 1 Sync type TFT LCD 4 LCD is TFT 0 LCD is an STN display 1 LCD is a TFT display 3 STN LCD is monochrome 0 STN LCD is color 1...

Страница 117: ...ead Status register and write Clear register HSYNC interrupt FIFO2 VLINE FINISH interrupt and FIFO1 VLINE FINISH interrupt are only for debug Don t use these interrupts under normal environment The pr...

Страница 118: ...OSD data can be transparent blinking or mixed with video data by setting overlay control register The display condition is depicted in the following table Table 9 3 OSD Display Condition OSDEN Color K...

Страница 119: ...SDKYM 2 Decide Video Synthesis Weighting OSDOVCN 6 4 3 Configure Video OSD overlay control 0 and 1 OSDOVCN 3 0 4 Enable Color Key Control OSDOVCN 8 5 If blinking function is desired Configure Blinking...

Страница 120: ...2 9 9 3 9 9 9 4 9 9 9 9 5 9 9 9 9 9 6 9 9 9 9 9 9 7 9 9 9 9 9 9 9 8 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 10 9 9 9 9 9 9 9 9 9 9 11 9 9 9 9 9 9 9 9 9 9 9 12 9 9 9 9 9 9 9 9 9 9 9 9 13 9 9 9 9 9 9 9 9 9...

Страница 121: ...aling function is required configure register OSD Up scaling Factor OSDUPSCF 3 Go to Step 6 4 If the Video down scaling function is required configure register Video Down scaling Factor VDDNSCF 5 If t...

Страница 122: ...cessing address Column counter counts the FIFO writing pulse If Horizontal Up Scaling factor is 2X FIFO will extract a pixel data to two pixel data internal So if Horizontal Up Scaling function is ena...

Страница 123: ...n from Winbond Table No 2005 W90P710 11 A 2 120 pixels 480 pixels 480 pixels 3 240 pixels 1 60 pixels If there is an image with size 480 480 24bpp stored in memory device with starting address is 0x30...

Страница 124: ...FIFO Real Column Count is the same with FIFO Column Count But if horizontal down scaling function is enabled factor M is not equal with N FIFO Real Column Count specify the column count of original im...

Страница 125: ...OSDWINS and OSDWINE 9 12Enable FIFO It contains two 16 words FIFO When LCD FIFO is enabled and there are no data in FIFO LCD FIFO will generate a request to LCD Arbiter After FIFO is full of data LCD...

Страница 126: ...eo or OSD raw data is swap format set the swap control bits FIFOCON 19 16 2 If only video data is inputted enable FIFO1 FIFOCON 0 if video and OSD raw data are both inputted enable FIFO1 and FIFO2 FIF...

Страница 127: ...lusive intellectual property of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A LCDINTS 5 0 3 Set the flags and clea...

Страница 128: ...rface with external audio CODEC One 8 level deep FIFO for read path and write path and each level has 32 bit width 16 bits for right channel and 16 bits for left channel One DMA controller handle the...

Страница 129: ...nd shall not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A 10 2Block Diagram Figure 10 1 Block diagram of Audio Controlle AHB Bus Master AHB Bus Sla...

Страница 130: ...000 0000 ACTL_PDSTC 0xFFF0 9020 R DMA destination current address register for play 0x0000 0000 ACTL_PSR 0xFFF0 9024 R W Play status register 0x0000 0004 ACTL_IISCON 0xFFF0 9028 R W IIS control regist...

Страница 131: ...le 10 2 AC97 Output Frame Data Format Tag slot 0 Bit 15 frame validity bit 1 is valid 0 is invalid Bits 14 3 slot validity but in W99702 only bits 6 3 are used bits 14 7 are unused Bit 3 is correspond...

Страница 132: ...te Audio mode Bit 10 PCM data for right channel request Bit 9 0 should be cleared to 0 Status DATA Slot 2 Bit 19 4 Control register read data which previous frame requested It should be cleared to 0 i...

Страница 133: ...e written to ACTL_ACOS1 If the echo value was not correct check the hardware 7 Read AC97 register value from RD 15 0 of ACTL_ACIS2 register A sample code is given below static UINT16 ac97_read_registe...

Страница 134: ...VALID 0 and SLOT_VALID 1 bits of ACTL_ACOS0 register The register index will be delivered by slot1 and setting value will be delivered by slot2 4 Polling the AC_W_FINISH bit of ACTL_ACCON register unt...

Страница 135: ...AC97 codec It supports single channel or 2 channels transfer The data arrangement in playback DMA buffer was shown in the following figure Figure 10 2 AC97 Playback Data in DMA Buffer DMA buffer 2 cha...

Страница 136: ...CTL_RESET_BIT bit of ACTL_RESET register high for 10ms to reset W90P710 audio controller And pull AC_RESET bit of ACTL_RESET register high for 10ms to reset W90P710 AC97 interface 4 Reset the external...

Страница 137: ...0x10007 Right channel MSB byte DMA buffer 1 channel 0x10000 Left channel LSB byte 0x10001 Left channel MSB byte 0x10002 Left channel LSB byte 0x10003 Left channel MSB byte 0x10004 Left channel LSB by...

Страница 138: ...END_IRQ bit was set read PCM data from the second half of record DMA buffer Once enough PCM data has been gathered and recording wants to be stopped just clear the AC_RECORD bit of ACTL_RESET register...

Страница 139: ...04 Left channel LSB byte 0x10005 Left channel MSB byte 0x10006 Left channel LSB byte 0x10007 Left channel MSB byte Note The DMA buffer is double buffering It will trigger an interrupt when half length...

Страница 140: ...Left channel MSB byte 0x10002 Right channel LSB byte 0x10003 Right channel MSB byte 0x10004 Left channel LSB byte 0x10005 Left channel MSB byte 0x10006 Right channel LSB byte 0x10007 Right channel MS...

Страница 141: ...sampling rate of the external codec through L3 interface 5 Set the bit 3 ACTL_IISCON to determine the data format And set the data format of external codec through L3 W99P710 support two formats of I...

Страница 142: ...terrupt for device driver to control the transmitting operation receiving operation and error handling There are five types of interrupts including line status interrupt transmitter FIFO empty interru...

Страница 143: ...Divisor Latch Register LS DLAB 1 0x0000 0000 UART1_DLM 0xFFF8 0104 R W Divisor Latch Register MS DLAB 1 0x0000 0000 UART1_IIR 0xFFF8 0108 R Interrupt Identification Register 0x8181 8181 UART1_FCR 0xFF...

Страница 144: ...Interrupt Identification Register 0x8181 8181 UART3_FCR 0xFFF8 0308 W FIFO Control Register Undefined UART3_LCR 0xFFF8 030c R W Line Control Register 0x0000 0000 UART3_MCR 0xFFF8 0310 R W Modem Contr...

Страница 145: ...eal Error rate 115200 0 6 117187 5 1 725 57600 0 14 58593 75 1 725 38400 0 22 39062 5 1 725 19200 0 47 19132 65 0 35 9600 0 96 9566 33 0 35 11 3 2 Initializations Before the transfer operation starts...

Страница 146: ...ess Bit 6 BCB Break Control Bit 5 SPE Stick Parity Bit 4 EPE Even Parity Enable 3 PBE Parity Bit Enable 2 NSB Number of STOP bit 0 One STOP bit 1 1 5 STOP bit 1 0 WLS Word Length Select 00 5 bits 01 6...

Страница 147: ...k UART buffer by reading status register If there s at least one data byte available in receive FIFO the RFDR bit is set 1 It indicates that driver can read receive FIFO to get new data bytes If the t...

Страница 148: ...The interrupt service routine is responsible to move data bytes from driver s buffer to transmit FIFO whenever the THRE interrupt happens If RDA or TOUT interrupts occurs the interrupt service routin...

Страница 149: ...Winbond Table No 2005 W90P710 11 A from Rx FIFO the driver receiving buffer when the receiver threshold level reaching interrupt occurs When the input function is called it reads the data bytes from...

Страница 150: ...ectronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A Start Write one data byte to driver s buffer Is buffer available for another d...

Страница 151: ...y of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A Start Is there at least one data byte in driver s buffer Read o...

Страница 152: ...11 6 Interrupt Service Routine Start ReadISR Is THRE Interrupt Move data bytes from driver buffer to Tx FIFO Is data byte available in driver s buffer Disable THRE interrupt Is RDA or TOUT interrupt R...

Страница 153: ...while receiving and vice versa The IrDA SIR physical layer specifies a minimum 10ms transfer delay between transmission and reception This feature should be implemented by software Figure 11 7 IrDA T...

Страница 154: ...assert an interrupt request if the interrupt is enabled A general software counting scheme is to set a software counter and add 1 to it upon every interrupt The Timer module also includes a watchdog t...

Страница 155: ...TISR 8 BIT PRESCALE 24 BIT COUNTER 8 BIT PRESCALE 24 BIT COUNTER 24 BIT COUNTER TINT0 TINT0 WDTINT WDTRST TIMER 0 TIMER 1 WATCHDOG TIMER TOUT0 TOUT1 58 6KHz 15MHz AMBA APB Interface 12 3Registers R r...

Страница 156: ...n the following equation Freq Crystal clock pre scaler 1 counter For W90P710 the crystal clock input is 15 MHZ According to the equation user can decide the values of pre scalar and counter to get the...

Страница 157: ...nd shall not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A In periodic mode the interrupt signal is generated periodically In toggle mode the interr...

Страница 158: ...thout permission from Winbond Table No 2005 W90P710 11 A Figure 12 2 Timer Initialization Sequence Start Disable Timer Set Operating Mode Prescaler Set Counter Enable Timer End Clear CE and IE of TCRx...

Страница 159: ...ce Routine A common timer interrupt service routine is very simple It increases the software counter and clears the timer interrupt status Figure 12 3 shows the flow chart of such an interrupt service...

Страница 160: ...be set before enable watchdog timer It ensures that the watchdog timer restarts from a known state Figure 12 4 and Figure 12 5 illustrate how to use watchdog timer Table 12 2 list the WatchDog Timeou...

Страница 161: ...sion from Winbond Table No 2005 W90P710 11 A Figure 12 4 Enable Watchdog Timer Start Reset WatchDog Timer Select Time Out Interval and Enable WatchDog Timer End Program WTR bit by 1 to WTCR to reset t...

Страница 162: ...buted or reproduced without permission from Winbond Table No 2005 W90P710 11 A Figure 12 5 Watchdog Timer ISR Start Clear Interrupt Flag and Reset WatchDog Timer End WTCR Register 3 WTIF WatchDog Time...

Страница 163: ...ARM7TDMI only if there s at least one interrupt channel is active and enabled The software driver can implement a priority scheme based on the status register However the AIC itself implements a prop...

Страница 164: ...Table No 2005 W90P710 11 A 13 2Block Diagram Figure 13 1 AIC block diagram A I C _ C T R L R e c o r d e r A I C _ I R E C E n c o d e r A I C _ I E N C s t a t u s m a s k r s ta t u s s ta t u s n...

Страница 165: ...00 0047 AIC_SCR10 0xFFF8 2028 R W Source Control Register 10 0x0000 0047 AIC_SCR11 0xFFF8 202C R W Source Control Register 11 0x0000 0047 AIC_SCR12 0xFFF8 2030 R W Source Control Register 12 0x0000 00...

Страница 166: ...00 AIC_IASR 0xFFF8 2104 R Interrupt Active Status Register 0x0000 0000 AIC_ISR 0xFFF8 2108 R Interrupt Status Register 0x0000 0000 AIC_IPER 0xFFF8 210C R Interrupt Priority Encoding Register 0x0000 00...

Страница 167: ...rtinent interrupt type according to the external devices The priority level of each interrupt channel is completely decided by the interrupted device After power on or reset all the channels are assig...

Страница 168: ...pt status has been was cleared the AIC de asserts the interrupt request For the interrupt channels that are edge triggered the device driver must clear AIC status to de assert the interrupt request To...

Страница 169: ...not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A executed firstly Then it will call the proper interrupt service routine according to the AIC_ISR c...

Страница 170: ...perty of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A Figure 13 3 Sequential Priority Scheme Start Read AIC_ISR M...

Страница 171: ...the interrupt channel number that is active enabled and has the highest priority multiplied by 4 then stored on the AIC_IPER The data Vector got from AIC_IPER is convenient for the following interrup...

Страница 172: ..._Handler jump to the correct handler LDR R2 AICBase LDR R1 R2 AIC_IPER gets the highest pending vector LDR PC PC R1 jump to correct handler NOP table of handler start address DCD Fake_Interrupt DCD In...

Страница 173: ...EOSCR to restore to normal interrupt state once it read the AIC_IPER Otherwise the next interrupt may not be serviced correctly Figure 13 5 shows the programming flow of using hardware priority scheme...

Страница 174: ...d as I O port Two extended interrupts nIRQ4 GPIO0 pin and nIRQ5 nWAIT pin are used the same interrupt request channel 31 of AIC It can be programmed as low high sensitive or positive negative edge tri...

Страница 175: ...8 SC0_CLK SD_CLK VD16 9 GPIO29 SC0_DAT SD_CMD VD17 PORT2 Configuration Pin Functions 0 GPIO42 PHY_RXERR KPCOL0 1 GPIO43 PHY_CRSDV KPCOL1 2 GPIO44 PHY_RXD 0 KPCOL2 3 GPIO45 PHY_RXD 1 KPCOL3 4 GPIO46 PH...

Страница 176: ...41 VD7 KPCOL7 14 2Register Map Register Address R W Description Reset Value GPIO_CFG0 0xFFF8 3000 R W GPIO port0 configuration register 0x0000 0000 GPIO_DIR0 0XFFF8 3004 R W GPIO port0 direction contr...

Страница 177: ...O_DIR6 0XFFF8 3064 R W GPIO port6 direction control register 0x0000 0000 GPIO_DATAOUT6 0xFFF8 3068 R W GPIO port6 data output register 0x0000 0000 GPIO_DATAIN6 0xFFF8 306C R GPIO port6 data input regi...

Страница 178: ...ut register GPIO_DATAOUTn Programmer should not change the value of whole register except the corresponding field of the register A sample code set GPIO PORT0 pin1 as GPIO output then change the outpu...

Страница 179: ...e GPIO_DIRn OMDENx y value as 0 input mode After the above steps user can get the GPIO pin input value high or low by read the GPIO data input register GPIO_DATAINn A sample code set GPIO PORT0 pin1 a...

Страница 180: ...Guide VERSION 2 0 PAGE 180 The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Tabl...

Страница 181: ...erate 32 768KHz clock The RTC can transmit data to CPU as BCD values The data include the time by second minute hour and the date by day month year In addition to reach better frequency accuracy the R...

Страница 182: ...r alarm counter Day of the week counter 1 Day FCR Compensate frequency by software Tick interrupt generator XTALIN XTALOUT Alarm Tick interrupt Select one Tick period 15 3Register Map Register Address...

Страница 183: ...tion When RTC block is power on programmer has to write a number Oxa5eb1357 to register INIR to reset all logic INIR act as hardware reset circuit Once INIR has been set as 0xa5eb1357 user cannot relo...

Страница 184: ...te Register Value Describtion AER 0 RTC read write disable CLR 05 1 1 2005 1 1 TLR 00 00 00 00 hr 00 min 00 sec CAR 00 00 00 2000 0 0 TAR 00 00 00 00 hr 00 min 00 sec TSSR 1 24 hr mode DWR 6 Saturday...

Страница 185: ...16 2 0x10 FCR 5 0 0x10 z In TLR and TAR only 2 BCD digits are used to express year We assume 2 BCD digits of XY denote 20XY but not 19XY or 21XY 15 5Programming Note 15 5 1 1 Set Calendar and Time 1...

Страница 186: ...produced without permission from Winbond Table No 2005 W90P710 11 A Figure 15 2 RTC Set Calendar and Time flow chart RTC start Initialize RTC INIR Initialize completed bit 0 of INIR be high Enable reg...

Страница 187: ...ut permission from Winbond Table No 2005 W90P710 11 A 15 5 2 Set Calendar and Time Alarm 1 Set and prepare the ISR of RTC alarm 2 Set time and calendar same as above step 1 8 3 Set alarm year month an...

Страница 188: ...ond Table No 2005 W90P710 11 A Figure 15 3 RTC Set Calendar and Time Alarm flow chart RTC start INitialize RTC INIR Initilaize copleted bit 0 of INIR be high Enable register R W AER Enable register R...

Страница 189: ...block is power on programmer has to write a number 0xa5eb1357 to INIR to reset all logic RTC 3 Read register INIR bit 0 if INIR16 equals to 1 means RTC has been set 4 Write 0xa965 to AER means enable...

Страница 190: ...all not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A RTC start Initialize RTC INIR Initialize completed bit 0 of INIR be high Enable register R W A...

Страница 191: ...SO 7816 compliant z PC SC T 0 T 1 compliant z 16 byte transmitter FIFO and 16 byte receiver FIFO z FIFO threshold interrupt to optimize system performance z Programmable transmission clock frequency z...

Страница 192: ..._0 0xFFF8 5034 R W Time out Initial Register 2 0x0000 0000 SCHI_TOD0_0 0xFFF8 5038 R Time out Data Register 0 0x0000 00FF SCHI_TOD1_0 0xFFF8 503C R Time out Data Register 1 0x0000 00FF SCHI_TOD2_0 0xF...

Страница 193: ...ter 0x0000 001F SCHI_BLH1 0xFFF8 5804 BDLAB 1 R W Baud Rate Divisor Latch Higher Byte Register 0x0000 0000 SCHI_ID1 0xFFF8 5808 BDLAB 1 R Smart Card ID Number Register 0x0000 0070 16 3Functional Descr...

Страница 194: ...timer2 respectively in time out configuration register SCHI_TOC The five operation modes are listed below 1 Mode 0 3b 000 Timer is stopped 2 Mode 1 3b 001 Timer starts counting the value stored in ti...

Страница 195: ...the same mode value to SCHI_TOC can t trigger the same timer again so must change to Mode 0 before triggering the same mode 4 Current bug when reading register SCHI_SCSR time out flag can t be clean...

Страница 196: ...with 0x2580 9600 0x2580 12 Configure TOC 5 3 in register SCHI_TOC with 3b 010 13 During ATR transmission if TO1 in register SCHI_SCSR is set a initial waiting time error has been detected 14 Once the...

Страница 197: ...ed The interrupt notifies host to read data from FIFO A new incoming data word or receiver FIFO empty clear this interrupt 16 3 4 Parity Error management The error character in reception or in transmi...

Страница 198: ...er FIFO In transmission 1 If a transmitted character has been NACK by the card then our smart card host interface will automatically re transmit it a number of times equal to the value programmed in P...

Страница 199: ...100kbps and 400kbps modes are supported directly For High speed mode special IOs are needed If these IOs are available and used then High speed mode is also supported Data is transferred between a Ma...

Страница 200: ...d distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A Arbitration lost interrupt with automatic transfer cancellation Start Stop Repeated Start Acknowledge generation...

Страница 201: ...PB Interface Clock Prescale I2C Core Logic 17 3Register Map Register Address R W Description Reset value I2C Interface 0 I2C_CSR0 0xFFF8 6000 R W Control and Status Register 0x0000 0000 I2C_DIVIDER0 0...

Страница 202: ...ister must be programmed to this 5 SCL frequency minus 1 Change the value of the prescale register only when the I2C_EN bit is cleared Example pclk 32MHz desired SCL 100KHz 3 63 1 100 5 32 hex F dec K...

Страница 203: ...id data after the IF flag has been set The software may issue a new write or read command when the I2C_TIP flag is cleared 17 4 5 Below list Some Examples of I2C Data Transaction 17 4 5 1 Write One By...

Страница 204: ...to TxR register TxR 15 8 5 Write data 0xAC to TxR register TxR 7 0 6 Set START bit STOP bit and WRITE bit of CMDR register 7 Wait for interrupt or I2C_TIP flag to negate 8 Read I2C_RxACK bit of CSR r...

Страница 205: ...high byte 0x12 to TxR register TxR 15 8 and address low byte 0x34 to TxR register TxR 7 0 5 Set START bit and WRITE bit of CMDR register 6 Wait for interrupt or I2C_TIP flag to negate 7 Read I2C_RxACK...

Страница 206: ...ad S Slave Address 7 b 1001110 R W A f rommastertoslav e f romslav etomaster A acknowledge SDA low A not acknowledge SDAhigh S START condition P STOP condition Commands 1 Write a value into DIVIDER re...

Страница 207: ...Generate start signal 2 Write slave address write bit then receive acknowledge from slave 3 Write memory location then receive acknowledge from slave 4 Generate repeated start signal 5 Write slave add...

Страница 208: ...ss read bit 1 to TxR 7 0 8 Set START bit and WRITE bit of CMDR register 9 Wait for interrupt or I2C_TIP flag to negate 10 Read I2C_RxACK bit from CSR register it should be 0 If it is not 0 there are s...

Страница 209: ...level of device slave select signal can be chosen to low active or high active which depends on the peripheral it s connected Writing a divisor into DIVIDER register can program the frequency of seria...

Страница 210: ...w_so_o mw_si_i pclk preset_n paddr pwrite psel penable pwdata pben prdata I O Decoder Registers Clock Generator Tx Rx Buffer MICROWIRE SPI Core Logic AMBA APB Interface Pin descriptions mw_sclk_o USI...

Страница 211: ...ansmit Register 0 0x0000 0000 USI_Tx1 0xFFF8 6214 W Data Transmit Register 1 0x0000 0000 USI_Tx2 0xFFF8 6218 W Data Transmit Register 2 0x0000 0000 USI_Tx3 0xFFF8 621C W Data Transmit Register 3 0x000...

Страница 212: ...2 Set USI_SSR register to select the access device 3 Set LSB bit of USI_CNTRL register to send LSB or MSB first 4 Set the IE bit of USI_CNTRL register to enable Universal Serial Interface interrupt 18...

Страница 213: ...and can be used to handle one PWM period The 16 bit comparator compares number in counter with threshold number in register loaded previously to generate PWM duty cycle The clock signal from clock div...

Страница 214: ...ion from Winbond Table No 2005 W90P710 11 A The value of comparator is used for pulse width modulation The counter control logic changes the output level when down counter value matches the value of c...

Страница 215: ...Control logic pwm_clk CMR CNR CMR Dead zone generator Dead zone Dead zone 19 3Register Map Register Address R W C Description Reset Value PPR 0xFFF8 7000 R W PWM Prescaler Register 0000 0000 CSR 0xFFF...

Страница 216: ...R C PWM Interrupt Indication Register 0000 0000 19 4Functional Description 19 4 1 Prescaler and clock selector W90P710 has two groups two channels in each group of pwm timers The clock input of the gr...

Страница 217: ...0MHz Therefore all of the values need to be recalculated when the PCLK is not equal to 80Mhz 19 4 2 Basic PWM timer operation and double buffering reload automatically W90P710 PWM Timers have a double...

Страница 218: ...R 50 151 51 200 50 Reg_CNR 199 Reg_CMR 49 Reg_CNR 99 Reg_CMR 0 100 1 Reg_CNR 0 Reg_CMR XX Stop PWM double buffering 19 4 3 PWM Timer Start Procedure The PWM Timer start procedure is is described as fo...

Страница 219: ...disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A Figure 19 3 PWM Timer Start Procedure PWM Timer Start Setup prescaler dead zone interval PPR Setup clock...

Страница 220: ...e Three different methods could used to stop PWM timer they re listed below Method 1 Set 16 bit down counter CNRx as 0 and monitor PDR When PDRx reaches to 0 disable pwm timer PCR Recommended Method 2...

Страница 221: ...ty of Winbond Electronics and shall not be disclosed distributed or reproduced without permission from Winbond Table No 2005 W90P710 11 A Figure 19 5 PWM Timer Stop flow chart method 2 PWM running Set...

Страница 222: ...ys are pressed only the keys or apparent keys in the array with the lowest address will be decoded KPI supports 2 keys scan interrupt and specified 3 keys interrupt or chip reset If the 3 pressed keys...

Страница 223: ...s debounce counter DBTC 7 0 comparator comparator low power wakeup row scan generation STATUS register WAKEUP register EN3KY ENRST CLOCK 15MHz KPI_INT KPI_RST KPI_ROW KPI_COL KPI_WAKEUP 20 3Register M...

Страница 224: ...nbond Table No 2005 W90P710 11 A 20 4 1 KPI Interface Programming Flow The KPI usage procedure is described as follows 1 Install KPI interrupt service routine 2 Configure GPIO KPI Multiple function 3...

Страница 225: ...wchart 20 4 2 KPI Low Power Mode Configuration When the system enters power down or idle mode user can use KPI interrupt to wake up it Programming need to set WAKE bit and configure LPWCEN 15 8 and LP...

Страница 226: ...R means binary code For example if user wants to use all keys on row 3 of 16x8 keyapd to wakeup W90P710 then 0x3 should be fill into this register but for 4x8 keypad it should be filled as 4 b1000 and...

Страница 227: ...es the host controller provides a command register for software driver to send commands to keyboard Some devices implementing PS 2 protocol can be connected to this host controller For example the BAR...

Страница 228: ...11 A Figure 21 2 Key map of extended keyboard Numeric keypad Although most set two make codes are only one byte wide there are a handfull of extended keys whose make codes are two or four bytes wide T...

Страница 229: ...Register Map The PS 2 interface host controller provides four control registers The regisger PS2CMD is used to send command to a PS 2 device The register PS2STS indicates the status of transmit and re...

Страница 230: ...Set Status LED s This command can be used to turn on and off the Num Lock Caps Lock Scroll Lock LED s After Sending ED keyboard will reply with ACK FA and wait for another byte which determines their...

Страница 231: ...tend 7 6 5 4 3 2 1 0 RX_SCAN_CODE z RX_release When one key has been released the keyboard will send its break code that is preceded by a data byte 0xF0 to host controller This bit indicates software...

Страница 232: ...ED 23 22 21 20 19 18 17 16 RESERVED 15 14 13 12 11 10 9 8 RESERVED 7 6 5 4 3 2 1 0 RX_ASCII_CODE z RX_ASCII_CODE This field stores the ASCII data content transmitted from device Therefore this part tr...

Страница 233: ...d Software needs to write one to this bit to clear this interrupt z RX_IRQ This Receive Interrupt bit will be set to 1 if Host controller receives one byte data from device This data is stored at PS2_...

Страница 234: ...mission from Winbond Table No 2005 W90P710 11 A START END Read register PS2STS Is RX_IRQ 1 A scan code arrived 1 Set a software envent 2 Read registers PS2SCANCODE PS2ASCII Is TX_IRQ 1 A command has b...

Страница 235: ...nting 1 to the corresponding interrupt bits 21 4 5 Example This example tells that how to turn on off the LEDs on the keyboard if host controller receives the scan codes including 0x77 Num Lock 0x58 C...

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