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4 Circuit Design

4.4.7.1

PCM Interface Description

Table 41. PCM interface description

Pin Name

Frequency Duty Ratio Coding Format

Operating Mode

PCM_CLK

2.048MHz 50%

16bit Liner mono

Module serves as master,
supporting PCM as slave

PCM_OUT - -

- -

16bit Liner mono

Module serves as master,
supporting PCM as slave

PCM_IN

- -

16bit Liner mono

Module serves as master,
supporting PCM as slave

PCM_SYNC 8KHz

Short pulse 16bit Liner mono

Module serves as master,
supporting PCM as slave

4.4.7.2

PCM Signal Description

The main chip of the module uses PCM signals that comply with the European E1
standard. PCM_CLK works at 2.048 MHz and uses 16-bit linear coding format. PCM_SYNC
is a short pulse of 8 kHz (488 nS).

Figure 20. PCM_SYNC timing sequence

Содержание LC116-LA

Страница 1: ...LC116 LA Hardware Guide V1 1...

Страница 2: ...product version upgrade or other reasons Unless otherwise specified the document only serves as the user guide All the statements information and suggestions contained in the document do not constitu...

Страница 3: ...F 11 2 3 GNSS Performance 14 2 4 Electrical Indicators 17 2 5 Application Environment 18 2 6 Reliability Indicators 18 2 7 ESD Indicators 19 3 Pins 21 3 1 Pin Properties 21 3 2 Pin Distribution 21 3 3...

Страница 4: ...ed 43 4 3 2 4 Disabling USB 43 4 4 Baseband Interface 44 4 4 1 USB 44 4 4 2 UART 45 4 4 3 I2 C 46 4 4 4 SD card 47 4 4 5 ADC 48 4 4 6 USIM 48 4 4 6 1 U SIM Card Connector with Card Detection Signal 48...

Страница 5: ...5 RF Part 58 4 5 1 Antenna Design 58 4 5 2 Impedance Design 60 5 Packaging and Storage 63 5 1 Packaging 63 5 2 Storage 63 6 Appendix 64 6 1 GPRS and EGPRS Encoding Scheme 64 6 2 Acronyms and Abbreviat...

Страница 6: ...Applicability Type Copyright Fibocom Wireless Inc 4 Applicability Type No Applicability Type Description 1 LC116 LA MCP is 2Gbit Flash 2Gbit RAM and supports MAIN_ANT and DIV_ANT...

Страница 7: ...Change History Copyright Fibocom Wireless Inc 5 Change History V1 0 2021 11 10 Initial version V1 1 2021 12 16 Updated the known issues...

Страница 8: ...e sub models of the LC116 LA product Table 1 Sub models of the LC116 LA product No Applicability Type Description 1 LC116 LA 00 90 MCP is 2Gbit Flash 2Gbit RAM and supports MAIN_ANT and DIV_ANT 2 LC11...

Страница 9: ...Table 2 Basic configuration Indicator Description Basic Configuration Processor MDM9X07 Memory 2Gbit Flash 2Gbit RAM Supported Operating System LINUX Table 3 Baseband characteristics Category Descrip...

Страница 10: ...ilter Antenna The following figure shows the internal structural block diagram 1 4 Operating Mode The module supports the following operating modes Table 5 Operating mode Operating Mode Description Sh...

Страница 11: ...e can be operated using the AT commands through the serial port The module transmits data When data transmission is completed the module returns to the standby or low power mode Sleep The module is in...

Страница 12: ...ators 2 1 Physical Indicators Table 6 LC116 LA package mode Indicator Description Weight 5 2 g Package LCC LGA 143 Pin Appearance dimensions 30 0 0 15 mm 30 0 0 15 mm 2 4 0 2 mm Structural dimensions...

Страница 13: ...Hz LTE FDD WCDMA Band 1 IMT 2100MHz 1920 1980 2110 2170 LTE FDD WCDMA GSM Band 2 IMT 1900 1850 1910 1930 1990 LTE FDD GSM Band 3 DCS 1800MHz 1710 1785 1805 1880 LTE FDD Band 4 IMT 2100 1710 1755 2110...

Страница 14: ...Table 8 Tx power System Band Tx Power dBm Description GSM GSM850 GSM900 DCS1800 PCS1900 32 5 1 5 32 5 1 5 29 5 1 5 29 5 1 5 WCDMA Band1 Band2 Band5 Band8 23 5 1 5 23 5 1 5 23 5 1 5 23 5 1 5 LTE FDD Ba...

Страница 15: ...e module System Band Main Sensitivity dBm Diversity Sensitivity dBm GSM GSM 850 GSM 900 DCS 1800 PCS 1900 109 109 108 5 108 5 WCDMA Band 1 Band 2 Band 5 Band 8 109 109 5 110 110 109 109 5 110 110 LTE...

Страница 16: ...140 MHz Bandwidth WCDMA WCDMA band 1 2100 250 MHz WCDMA band 2 1900 140 MHz WCDMA band 5 800 70 MHz WCDMA band 8 900 80 MHz Bandwidth LTE LTE band 1 2100 250 MHz LTE band 2 1900 140 MHz LTE Band 3 180...

Страница 17: ...cycle 256 frames USB sleep 4 3 3 LTE TDD Paging cycle 64 frames USB sleep Paging cycle 128 frames USB sleep Paging cycle 256 frames USB sleep 4 3 3 Iidle GSM GSM WCDMA WCDMA LTE FDD LTE FDD LTE TDD L...

Страница 18: ...ata transfer GSM900 PCL 8 1Rx 4Tx EDGE Data transfer DCS1800 PCL 2 1Rx 4Tx EDGE Data transfer PCS1900 PCL 2 1Rx 4Tx 460 470 440 440 IWCDMA RMS WCDMA WCDMA Data transfer Band I 23 5dBm WCDMA Data trans...

Страница 19: ...O interfaces can withstand Table 12 Limit voltage range of module interfaces Interface Description Minimum Value V Maximum Value V VBAT Power input 0 3 4 7 USB_VBUS USB insertion detection 0 3 5 5 GPI...

Страница 20: ...n temperature Beyond this range the module may not work properly or be damaged 2 6 Reliability Indicators To improve the reliability and stability of the product the module has been tested for reliabi...

Страница 21: ...pan test 30 times cable insertion and removal to the RF antenna interface After the test items are tested the module can be powered on the function is normal and the performance meets the standard 2 7...

Страница 22: ...ge kV Antenna core and antenna ground Test the contact and non contact discharge with an ESD simulator 8 10 GND Test the contact and non contact discharge with an ESD simulator 8 10 Other interfaces T...

Страница 23: ...O Digital Input and Output AI Analog input AO Analog Output AIO Analog Input and Output OD Open Drain G Ground Voltage Domain Power domain of the interface Description Specific meaning of the pin and...

Страница 24: ...s to be attached near the pins to prevent interference to RF Keep the reserved and other unused pins unconnected Connect all GND pins to the ground network Ground pins 128 143 It is prohibited to pull...

Страница 25: ...cription 4 RESET_N I When the module is working pull down RESET_N for 700 ms to 1s and then release it The module resets 3 PWRKEY I When the module is in power off mode pull down PWRKEY for 100 ms to...

Страница 26: ...NK PI Constant current source input 79 RESERVED Reserved 96 GPIO_24 IO 1 8 V General input output interface It is prohibited to pull it up to the high level before the module is successfully powered o...

Страница 27: ...PIO1_PM IO 1 8 V General input output interface 126 GPIO2_PM IO 1 8 V General input output interface 127 GPIO4_PM IO 1 8 V General input output interface 3 3 4 RF Interface Table 21 RF Interface Pin N...

Страница 28: ...elect Table 24 USB interface Pin No Pin Name I O Power domain Description 11 USB_VBUS AI USB insertion detection typical value 5 V 12 USB_DN IO USB differential data signal 13 USB_DP IO USB differenti...

Страница 29: ...BT_UART_TXD DO 1 8 V Module transmits data 86 BT_PCM_CLK IO 1 8 V PCM clock signal It is prohibited to pull it up to the high level before the module is successfully powered on 87 BT_PCM_OUT DO 1 8 V...

Страница 30: ...I 1 8 V When the module is in power off mode pull up USB_BOOT and insert the USB The module enters the download mode It is prohibited to pull it up to the high level before the module is successfully...

Страница 31: ...pulled up by an external 1 8 V Disconnect it if it is not used Table 30 Debug interface Pin No Pin Name I O Power domain Description 42 DBG_UART_TXD DO 1 8 V Debug serial port sending 106 DBG_UART_RX...

Страница 32: ...control signal 22 SD_DATA0 IO 1 8 V 3 V SD card data signal 0 23 SD_DATA1 IO 1 8 V 3 V SD card data signal 1 24 SD_DATA2 IO 1 8 V 3 V SD card data signal 2 25 SD_DATA3 IO 1 8 V 3 V SD card data signa...

Страница 33: ...7 ADC1 AI 0 1 8 V Analog to digital conversion 1 121 ADC0 AI 0 1 8 V Analog to digital conversion 0 Table 35 SGMII interface Pin No Pin Name I O Power domain Description 68 SGMII_RX_P AI SGMII differe...

Страница 34: ...TA pull up power supply output of 1 8 2 85 V configurable Table 36 LCD interface Pin No Pin Name I O Power domain Description 94 LCD_D0 IO 1 8 V LCD bus data bit 0 8 LCD_D1 IO 1 8 V LCD bus data bit 1...

Страница 35: ...l 122 LCD_OE_N DO 1 8 V LCD bus primary device read enabling 123 LCD_WE_N DO 1 8 V LCD bus primary device write enabling 75 PCM_SYNC LCD_TE IO 1 8 V PCM synchronization signal LCD bus data synchroniza...

Страница 36: ...ule may be powered off or restarted When the module is operating in burst transmit state the power limit is as shown in the following figure Burst transmit Burst transmit min 3 3V Power supply Ripple...

Страница 37: ...tions during module operation Regulating capacitor Use a capacitor with low ESR 220 uF x 2 or 330 uF LDO or DC power supply requires capacitors with a capacitance of no less than 440 uF Battery power...

Страница 38: ...be placed close to the module and the ground plane of the power supply part should be as complete as possible 4 2 Control Interface Control signals are used to power on off reset and download the mod...

Страница 39: ...quence Figure 8 Startup timing sequence Before pulling down the PWRKEY pin make sure that the VBAT voltage is stable It is recommended to control the interval from power up by VBAT to PWRKEY pin pull...

Страница 40: ...power off AT Power off AT PWROFF Software power off When the module is working properly do not cut off the power supply of the module immediately to avoid damaging the internal Flash It is strongly re...

Страница 41: ...Reset Module reset method Pull down the RESET_N pin for 700 ms to 1s and then release or send the AT command AT RESET Clients can control the RESET_N pin by OC OD driver circuit and button switch The...

Страница 42: ...lowing figure shows the RESET_N timing sequence Figure 12 Reset timing sequence PCB Design RESET is a sensitive signal During PCB layout keep these signals far away from RF interference PCB routes mus...

Страница 43: ...Hardware I O interface button control Send AT WDISABLEEN 1 to enable W_DISABLE and pull up or disconnect the W_DISABLE pin pull up by default The module enters standard mode When this pin is pulled do...

Страница 44: ...1 0 Set USB sleep mode Unplug the USB cable and turn off the USB Hub master controller The module will enter sleep mode Wake mode Insert the USB Turn on the USB master controller or pull down USB_VBU...

Страница 45: ...y enters the suspend state Wake mode The module can wake up through any USB operation 4 3 2 4 Disabling USB If there is no USB connection between the module and the host you can disable the USB to ent...

Страница 46: ...SB_DM DP differential signal line It is recommended to connect a 0 ohm resistor on each USB_DM DP differential line to facilitate debugging USB enumeration requires an additional voltage to USB_VBUS O...

Страница 47: ...lt baud rate is 115200 bps used for data transmission and AT command transmission The Bluetooth serial port supports baud rates of 4800 bps 9600 bps 19200 bps 38400 bps 57600 bps 115200 bps 230400 bps...

Страница 48: ...speed mode The I2 C bus is a simple bidirectional two wire synchronous serial bus It only requires a data line and a clock line to transfer information between devices connected to the bus It is main...

Страница 49: ...ESD requirements and at the same time EMS capability must be improved to ensure that the SD card can work stably The following principles must be strictly followed in the design If the cabling length...

Страница 50: ...tors to improve signal quality The capacitance on the SD signal line must be smaller than 40 pF 4 4 5 ADC The module provides three analog to digital conversion interfaces Run the AT MMAD 0 1 command...

Страница 51: ...is inserted and DET and POL are disconnected when the card is removed The following figure shows the reference design circuits When U SIM card is inserted USIM_PRESENCE pin is at a high level When U S...

Страница 52: ...SIM Hot Plugging The LC116 LA module supports U SIM card hot plugging function The module determines whether the U SIM card is in place by detecting the state of the USIM_PRESENCE pin The U SIM card h...

Страница 53: ...ity USIM_CLK and USIM_DATA signal lines are grounded and isolated to avoid mutual interference If it is difficult to do so at least U SIM card signals must be wrapped with copper connected to the grou...

Страница 54: ...iner mono Module serves as master supporting PCM as slave PCM_IN 16bit Liner mono Module serves as master supporting PCM as slave PCM_SYNC 8KHz Short pulse 16bit Liner mono Module serves as master sup...

Страница 55: ...Figure 22 Timing sequence of LC116 LA module to PCM_CODEC Table 42 Codec timing sequence parameters Time Parameter Min Typ Max Unit t sync PCM_SYNC cycle time 125 s t synca PCM_SYNC asserted time 488...

Страница 56: ...ter PCM_CLK falling 10 ns t pdout Delay From PCM_CLK rising to PCM_DOUT valid 60 ns t zdout Delay from PCM_CLK falling to PCM_DOUT high impedance 160 ns 4 4 8 Status Indicator 4 4 8 1 Network Status I...

Страница 57: ...No SIM card SIM pin Registering with the network T 15s Failed to register with the network 2 3000 ms at high level or 75 ms at low level Standby 3 75 ms at high level or 75 ms at low level Establishe...

Страница 58: ...re 24 Reference circuit for the STATES indicator 4 4 9 HSIC Interface HSIC is a two wire source synchronous serial interface with a signal level of 1 2 V It is suitable for low power applications with...

Страница 59: ...ace using H 028 015A01 LCD screen Figure 25 LCD reference circuit 4 4 11 SGMII The LC116 LA module provides an SGMII interface with embedded Ethernet MAC The characteristics are as follows It complies...

Страница 60: ...The following figure shows the reference design of the SGMII interface of the LC116 LA module connected to Ethernet PHY chip such as AR8033 Figure 27 Reference design of the SGMII interface 4 5 RF Par...

Страница 61: ...pattern Intensity of electromagnetic field in all directions of far field PIFA or IFA antenna is recommended Gain and directivity The gain refers to the combination of antenna efficiency and antenna...

Страница 62: ...dB and impedance should be controlled within 50 In general the impedance of the RF signal route is determined by the dielectric constant of the material the route width W the ground clearance S and t...

Страница 63: ...e 30 Four layer PCB coplanar waveguide structure see ground layer 3 Figure 31 Four layer PCB coplanar waveguide structure see ground layer 4 In the design of RF antenna interface circuit in order to e...

Страница 64: ...stance from the ground The reference ground plane of the RF signal cable should be kept intact adding a certain amount of ground holes around the signal and the reference ground can improve the RF per...

Страница 65: ...5 1 Packaging For packaging and storage please refer to FIBOCOM LC116 Series SMT Design Guide 5 2 Storage Storage conditions recommended The temperature is 23 5 the relative humidity is 35 70 Storage...

Страница 66: ...6 21 4 The GPRS standard stipulates 29 types of GPRS multi slot modes for mobile stations The multi slot class defines the maximum uplink and downlink rates The expression is 3 1 or 2 2 The first num...

Страница 67: ...g methods Coding Scheme Modulation Coding Family 1 Timeslot 2 Timeslot 4 Timeslot CS 1 GMSK 9 05kbps 18 1kbps 36 2kbps CS 2 GMSK 13 4kbps 26 8kbps 53 6kbps CS 3 GMSK 15 6kbps 31 2kbps 62 4kbps CS 4 GM...

Страница 68: ...2 Acronyms and Abbreviations Table 48 Acronyms and abbreviations Abbreviations Definition bps Bits Per Second DRX Discontinuous Reception EGSM Extended GSM900 Band FDD Frequency Division Duplexing GM...

Страница 69: ...Value VIHmax Maximum Input High Level Voltage Value VIHmin Minimum Input High Level Voltage Value VILmax Maximum Input Low Level Voltage Value VILmin Minimum Input Low Level Voltage Value VImax Absolu...

Страница 70: ...User Equipment UE conformance specification Radio transmission and reception FDD Part 1 Conformance specification 3GPP TS 34 122 V10 1 0 Technical Specification Group Radio Access Network Radio trans...

Страница 71: ...lity EMC requirements for mobile terminals and ancillary equipment 3GPP TS 27 007 V10 0 8 AT command set for User Equipment UE 3GPP TS 27 005 V10 0 1 Use of Data Terminal Equipment Data Circuit termin...

Страница 72: ...equired to show compliance with Part 15 Subpart B while the transmitter module s are installed and operating The modules should be transmitting and the evaluation should confirm that the module s inte...

Страница 73: ...re met Antenna Installation 1 The antenna must be installed such that 20 cm is maintained between the antenna and users 2 The transmitter module may not be co located with any other transmitter or ant...

Страница 74: ...r a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment gen...

Страница 75: ...hat apply to the host not covered by the modular transmitter grant of certification If the grantee markets their product as being Part 15 Subpart B compliant when it also contains unintentional radiat...

Страница 76: ...quired with this module installed Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment This equipment should be installed a...

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