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CLM920_AC5 Mini PCIE LTE Module Hardware Manual

Shanghai Yuge Information Technology co., LTD

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Chapter 3. Interface Application Description

3.1 Overview

This chapter mainly describes the interface definition and application of this module. Contains
the following sections:



52-pin gold finger



Interface definition



Power interface



USB interface



USIM interface



UART interface



WWAN control interface



PCM voice interface



RF antenna interface.

3.2 Module interface

3.2.1 52-pin gold finger

CLM920_AC5 Mini PCIE module uses 52-pin Mini PCIE gold finger as external interactive
interface.

Figure 3-1 Gold finger TOP surface and BOTTOM surface

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Summary of Contents for CLM920 AC5

Page 1: ...roduct name CLM920_AC5 Mini PCIE LTE Module Hardware Manual Number of pages 37 Version V1 2 Date 2020 5 11 CLM920_AC5 Mini PCIE LTE Module Hardware Manual V1 2 Shanghai YUGE Information Technology Co Ltd ...

Page 2: ...are Manual Shanghai Yuge Information Technology co LTD 2 History record Version Date Author Description V1 0 20190505 David Initial V1 1 20190704 David Update current consumption V1 2 20200511 David Update the interface definition section ...

Page 3: ...Power on off reset mode 19 3 4 1 Boot sequence 20 3 4 2 Power off 20 3 4 3 Reset control 20 3 5 USB interface 21 3 6 UART interface 23 3 7 USIM interface 24 3 7 1 USIM card reference circuit 24 3 7 2 USIM_DET Hot Swap Reference Design 25 3 8 General GPIO interface 26 3 9 Network indication interface 27 3 10 RF antenna interface 27 3 10 1 RF connector location 28 3 10 2 RF connector size 28 3 10 3 ...

Page 4: ...3 2 Detail of the gold finger TOP and BOTTOM AB 14 Figure 3 3 LDO power reference circuit 18 Figure 3 4 DCDC power reference circuit 18 Figure 3 5 MOS tube control power switch reference circuit 18 Figure 3 6 GSM TDMA burst current supply voltage drop 19 Figure 3 7 Power on sequence diagram 20 Figure 3 8 Reset reference circuit 21 Figure 3 9 Reset timing diagram 21 Figure 3 10 USB connection desig...

Page 5: ...pin definition 22 Table 3 8 UART serial signal definition 23 Table 3 9 SIM card signal definition 24 Table 3 10 Definition of SIM card hot swap detection pins 25 Table 3 11 General GPIO pin definition 26 Table 3 12 Network indicator pin definition 27 Table 3 13 Network indication status 27 Table 3 14 RF connector main parameters 28 Table 3 15 PCM pin definition 30 Table 3 16 PCM specific parameter...

Page 6: ...CLM920_AC5 Mini PCIE LTE Module Hardware Manual Shanghai Yuge Information Technology co LTD 6 Table 5 3 Working voltage of CLM920_AC5 Mini PCIE module 36 Table 5 4 CLM920_AC5 Mini PCIE ESD features 37 ...

Page 7: ...rovide hardware description Abbreviation ADC Analog Digital Converter AFC Automatic Frequency Control AGC Automatic Gain Control ARFCN Absolute Radio Frequency Channel Number B2B Board to Board Connector BER Bit Error Rate CDMA Code Division Multiple Access DAI Digital Audio interface DAC Digital to Analog Converter DSP Digital Signal Processor DTR Data Terminal Ready EFR Enhanced Full Rate EMC El...

Page 8: ...echnology co LTD 8 PPP Point to point protocol RAM Random Access Memory ROM Read only Memory RTC Real Time Clock SMS Short Message Service UART Universal asynchronous receiver transmitter UIM User Identifier Management USB Universal Serial Bus VSWR Voltage Standing Wave Ratio ...

Page 9: ...bedded operating systems such as OS Windows series Linux Android CLM920_AC5 module can be used in the following occasions Car Equipment Wireless POS machine Wireless advertising media Remote monitoring Smart meter reading Mobile broadband automated industry Other wireless terminals etc 2 2 Module characteristics Table 2 1 Module specifications Product name Description CLM920_AC5 Mini PCIE LTE for ...

Page 10: ...or Single core ARM Cortex A7 processor clocked at 1 2GHZ 256kB level 2 cache Operating Voltage 3 3V 4 2V Typical voltage 3 7V Energy saving current Standby current 5mA Application interface Standard SIM interface support 3 0V 1 8V support hot swap function USB2 0 High Speed Hardware reset interface UART serial interface PCM voice interface Power interface Network status indication interface Antenn...

Page 11: ... 007 and 27 005 SMS business Support Text and PDU mode Support point to point MO and MT SMS storage USIM card ME default Virtual network card Support USB virtual network card Temperature range Normal operating temperature 35 C to 75 C Extreme operating temperature 40 C to 85 C Storage temperature 40 C to 85 C Module function distinction Above the label M stands for the main set D with the table di...

Page 12: ...LTE Module Hardware Manual Shanghai Yuge Information Technology co LTD 12 The functional block diagram of the CLM920_AC5 Mini PCIE module is shown below Figure 2 1 Functional block diagram of the CLM920_AC5 Mini PCIE module ...

Page 13: ...lication of this module Contains the following sections 52 pin gold finger Interface definition Power interface USB interface USIM interface UART interface WWAN control interface PCM voice interface RF antenna interface 3 2 Module interface 3 2 1 52 pin gold finger CLM920_AC5 Mini PCIE module uses 52 pin Mini PCIE gold finger as external interactive interface Figure 3 1 Gold finger TOP surface and...

Page 14: ...e interface is a standard Mini PCI Express interface The module interface is defined as shown in the following table Table 3 1 IO parameter definition Symbol sign Description IO Two way input and output PI Power input PO Power Output AI Analog input AO Analog output DI Digital input DO Digital output Table 3 2 Interface definition Pin Standard definition Module definition IO Functional description...

Page 15: ... signal 12 UIM_CLK UIM_CLK DO SIM clock signal 13 REFCLK UART_TX DO Serial port sending signal 14 UIM_RESET UIM_RESET DO SIM reset signal 15 GND GND Ground 16 UIM_VPP NC 17 RESERVED VDD_EXT PO 1 8V output power 18 GND GND Ground 19 RESERVED AP_READY Reserved Reserved 20 W_DISABLE W_DISABLE DI Turn off RF communication Active low 21 GND GND Ground 22 PERST RESET DI Reset control Active low 23 PERn0...

Page 16: ...ND GND Ground 41 3 3Vaux VBAT PI power input 42 LED_WWAN LED_WWAN OC Status indicator 43 GND GND Ground 44 LED_WLAN NC 45 RESERVED PCM_CLK DO PCM clock pulse 46 LED_WPAN NC Reserved status indicator 47 RESERVED PCM_DOUT DO PCM send data 48 1 5V NC 49 RESERVED PCM_DIN DI PCM receive data 50 GND GND Ground 51 RESERVED PCM_SYNC DO Frame sync signal 52 3 3Vaux VBAT PI power input The module s general ...

Page 17: ...the module provides 5 power supply pins and 14 ground pins In order to ensure the normal operation of the module all power and ground pins must be connected and used The power supply range of the module is 3 3 4 2V it is recommended to use 3 7V 2A power supply The module will generate a current of more than 2A peak at the moment of data transmission or conversation resulting in a relatively large ...

Page 18: ... 3 3 LDO power reference circuit Figure 3 4 DCDC power reference circuit Figure 3 5 MOS tube control power switch reference circuit 1 In order to prevent damage to the module caused by surge and overvoltage it is recommended to connect a 5 1V 500mW Zener diode in parallel to the VBAT pin of the module ...

Page 19: ...M calls a current of more than 2A will be generated resulting in a ripple voltage drop on the power supply voltage so the power supply voltage must not be lower than 3 3V Figure 3 6 GSM TDMA burst current supply voltage drop 3 4 Power on off reset mode The CLM920_AC5 Mini PCIE module only supports one power on boot method Users can determine whether the module is powered on by querying the high an...

Page 20: ... 0 3 0 0 5 V 3 4 2 Power off If you want to shut down the CLM920_AC5 Mini PCIE module you can cut off the VBAT power supply At this time the module does not perform the normal shutdown process Only when the module works abnormally and cannot be restarted it is recommended to restart the module after power off It is recommended that the interval between two restarts be greater than 30s 3 4 3 Reset ...

Page 21: ...2 1 V VIL RESET input low voltage 0 3 0 0 8 V Reset RESET sequence is as follows Figure 3 9 Reset timing diagram The CLM920_AC5 Mini PCIE module supports AT command reset The AT command is at cfun 1 1 to restart the module Detailed instructions can be found in the CLM920_AC5 AT instruction set manual 3 5 USB interface CLM920_AC5 Mini PCIE module USB interface supports USB2 0 high speed protocol su...

Page 22: ...gh speed 480Mbps and full speed 12Mbps modes so the wiring design needs to strictly follow the USB2 0 protocol requirements pay attention to the protection of the data line differential wiring the control impedance is 90 Ω 2 In order to improve the antistatic performance of the USB interface it is recommended to add ESD protection devices on the data line and the equivalent capacitance value of th...

Page 23: ...am log information etc The UART port of the module supports 9600 19200 38400 57600 115200 230400bps baud rate the default is 115200bps The UART interface is defined as follows Table 3 8 UART serial signal definition Pin number Signal name I O Description 11 UART_RX DI Serial port to receive data 13 UART_TX DO Serial port to send data 28 UART_CTS DI User allows module to send 25 UART_RTS DO The mod...

Page 24: ...ISO 7816 3 standard The power of the USIM card is provided by the internal power regulator of the module and supports 1 8V 3 0V Table 3 9 SIM card signal definition Pin Signal name IO High value Description 6 UIM_DET DI 1 8V SIM card hot swap detection 8 UIM_PWR PO 1 8V 2 85V SIM card power supply 10 UIM_DATA IO 1 8V 2 85V SIM card data signal 12 UIM_CLK DO 1 8V 2 85V SIM card clock signal 14 UIM_...

Page 25: ...y and high speed signal line as possible UIM_DATA has been internally pulled up to VDD_EXT through a 47K resistor no external pull up is required UIM_DET is the detection pin inserted or not inserted into the USIM card By default it is high level This pin can be used to detect the SIM card status during hot swap applications In order to avoid instantaneous voltage overload the USIM interface needs...

Page 26: ...AT HOSCFG 1 1 SIM card status is high set AT HOSCFG 1 0 SIM card status is low set AT HOSCFG 0 0 SIM card hot swap function is off 3 8 General GPIO interface Table 3 11 General GPIO pin definition Pin Signal name I O High value Description 19 AP_READY Reserved 20 W_DISABLE DI 1 8V Turn off the radio frequency function 32 WAKEUP_IN DI 1 8V Module sleep control CLM920_AC5 Mini PCIE module supports s...

Page 27: ...tor Table 3 13 Network indication status status LED display status no service Constantly bright Module registration on non 4G network Slow flash The module registers 4G network or module to register non 4G network for voice SMS and other services Fast flashing The reference design of LED network indicator is as follows Figure 3 15 Network indicator circuit diagram The brightness of the LED lamp ca...

Page 28: ...RF connectors 3 10 2 RF connector size It is recommended that customers use the RF Connector connection method The antenna connector must use a 50 ohm characteristic impedance coaxial connector and select an RF connection cable with as little insertion loss as possible MM9329 2700 connector from Murata is recommended Figure 3 17 Dimensional drawing of the RF connector Table 3 14 RF connector main ...

Page 29: ...terfaces which are main antenna and diversity antenna The 50 ohm characteristic impedance trace must be connected to the antenna In actual use the antenna factory can be used to optimize and match the device parameter values according to the user s circuit board wiring The main board R1 R3 defaults to 100PF C1 C2 C3 C4 defaults to empty stickers To prevent damage to the internal of the module it i...

Page 30: ...te U rate and 16 bit linear short frame encoding format PCM_SYNC is 8kHZ PCM_CLK is 2048kHZ Table 3 15 PCM pin definition Pin number Signal name I O Description 45 PCM_CLK D0 PCM clock pulse 47 PCM_DOUT D0 PCM data output 49 PCM_DIN DI PCM data input 51 PCM_SYNC DO PCM frame synchronization signal Table 3 16 PCM specific parameters Characteristic Description Encoding format Linear Data bit 16bits ...

Page 31: ...CLM920_AC5 Mini PCIE LTE Module Hardware Manual Shanghai Yuge Information Technology co LTD 31 Figure 3 21 PCM short frame mode timing diagram ...

Page 32: ...plex mode LTE B1 1920MHz 1980MHz 2110MHz 2170MHz FDD LTE B3 1710MHz 1785MHz 1805MHz 1880MHz FDD LTE B5 824MHz 849MHz 869MHz 894MHz FDD LTE B8 880 MHz 915 MHz 925 MHz 960 MHz FDD LTE B38 2570MHz 2620MHz 2570MHz 2620MHz TDD LTE B39 1880MHz 1920MHz 1880MHz 1920MHz TDD LTE B40 2300MHz 2400MHz 2300MHz 2400MHz TDD LTE B41 2496MHz 2690MHz 2496MHz 2690MHz TDD UMTS B1 1920MHz 1980MHz 2110MHz 2170MHz WCDMA ...

Page 33: ...Bm Receive sensitivity WCDMA B1 1920MHz 1980MHz 2110MHz 2170MHz 23 2 2dBm 109dBm WCDMA B5 824MHz 849MHz 869MHz 894MHz 23 2 2dBm 109dBm WCDMA B8 880MHz 915MHz 925MHz 960MHz 23 2 2dBm 109dBm CLM920_AC5 Mini PCIE module 4G receive sensitivity and transmit power test indicators are as follows Table 4 4 4G RF sensitivity index Directory Sensitivity 3GPP protocol requirements Min Typical Max LTE B1 FDD ...

Page 34: ...nna requirements CLM920_AC5 Mini PCIE module main antenna antenna design requirements Table 4 6 Main antenna specifications Band Standing wave ratio Antenna gain Effectiveness TRP TIS B1 FDD 2 5 1 4dbi 40 19 94 B3 FDD 2 5 1 4dbi 40 19 91 B5 FDD 2 5 1 4dbi 40 19 92 B8 FDD 2 5 1 4dbi 40 19 94 B38 TDD 2 5 1 4dbi 40 19 93 B39 TDD 2 5 1 4dbi 40 19 93 B40 TDD 2 5 1 4dbi 40 19 93 B41 TDD 2 5 1 4dbi 40 19...

Page 35: ...8300 21 7 626 18550 21 5 612 LTE FDD B3 10Mbps 19250 21 6 635 19575 22 576 19900 22 598 LTE FDD B5 10Mbps 20450 22 5 530 20525 22 5 518 20600 22 5 520 LTE FDD B8 10Mbps 21500 22 3 577 21625 21 8 575 21750 22 577 LTE TDD B38 10Mbps 37800 22 4 475 38000 22 430 38200 21 8 446 LTE TDD B39 10Mbps 38300 22 352 38450 22 350 38600 22 351 LTE TDD B40 10Mbps 38700 22 425 39150 21 8 414 39600 22 2 424 LTE TD...

Page 36: ...pplication UIM_PWR is 2 85V Other digital IO levels are unified to 1 8V Table 5 2 Electrical characteristics of CLM920_AC5 Mini PCIE module Parameter Parameter Description Min Max VIH High level input voltage 0 65 VDD_EXT VDD_EXT 0 3V VIL Low level input voltage 0 35 VDD_EXT VOH High level output voltage VDD_EXT 0 45V VDD_EXT VOL Low level output voltage 0 0 45V 5 3 Power supply CLM920_AC5 Mini PC...

Page 37: ...e it may cause abnormal or damage 5 4 Static characteristics CLM920_AC5 Mini PCIE module needs to protect ESD to ensure product quality Table 5 4 CLM920_AC5 Mini PCIE ESD features Test port Contact discharge Air discharge unit USB interface 4 8 KV USIM interface 4 8 KV Analog voice interface 4 8 KV VBAT power supply 4 8 KV ...

Page 38: ...le is a PCBA with a single sided layout The appearance of the module is shown below Figure 6 1 CLM920_AC5 Appearance 6 2 Mini PCI Express connector The CLM920_AC5 Mini PCIE module interface conforms to the PCI Express Mini Card 1 2 interface standard PCI Express Mini Card connectors that meet this standard can be used with it such as Molex s 679100002 Figure 6 2 Connector dimensions ...

Page 39: ...CLM920_AC5 Mini PCIE LTE Module Hardware Manual Shanghai Yuge Information Technology co LTD 39 6 3 Module fixing method CLM920_AC5 Mini PCIE module is fixed with two screw holes for grounding ...

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