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The module provides an open GPIO signal to indicate the radio frequency communication

state.

PIN NO.

I/O

Description

LED_WWAN

Network status indicator

Status

LED display

No service

Always light

Module registration is not 4G network

Double flash

Module registration is 4G network or module registration is not 4G network

into voice, SMS and other services

Flash quickly

NOTE:

The brightness of the LED lamp can be adjusted by adjusting the current limiting

resistance, and the maximum current is 40mA.

3.9 RF antenna connector

3.9.1 RF antenna connector position

3.9.2 RF antenna connector size



The antenna connector must use a coaxial connector with 50 ohm characteristic

impedance



Murata's MM9329-2700 connector is recommended

Содержание CLM920

Страница 1: ...CLM920 Hardware user guide ...

Страница 2: ... 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 Electromagnetic Compatibility EMI Electro Magnetic Interference ESD Electronic Static Discharge EVDO Evolution Data Only FR Full Rate GPRS General Packet Radio Service HR Half Rate IMEI International Mobile Equipm...

Страница 3: ...g media Remote monitoring Intelligent metering Mobile Broadband Industrial automation Other wireless terminal 2 2 Module characteristics MODEL CLM920 Chipset MDM9607 Package type Mini PCIE Dimension mm 51 30 3 8 FDD LTE 150M DL 50M UL Cat 4 B2 B4 B5 B7 WCDMA 42M DL 5 76M UL B2 B5 GSM 236Kbps DL UL B2 B5 GPS Analog audio Optional Digital audio USB 2 0 High Speed UART USIM NDIS ECM Gobinet 2 3 Modul...

Страница 4: ...er mainly describes the interface definition and application of this module Including the following 52 PIN gold finger Interface definition Power interface USB interface USIM interface UART interface WWAN interface PCM Analog audio interface RF antenna interface 3 2 Module interface 3 2 1 52 PIN gold finger ...

Страница 5: ...t AT set headset and speaker mode 6 1 5V UIM_DET DI SIM Hot plug detection 7 CLKREQ SPK REC AO Audio output AT set headset and speaker mode 8 UIM_PWR UIM_PWR PO SIM power 9 GND GND GND 10 UIM_DATA UIM_DATA IO SIM data signal 11 REFCLK UART_RX DI UART receiving 12 UIM_CLK UIM_CLK DO SIM clock signal 13 REFCLK UART_TX DO UART sending 14 UIM_RESET UIM_RESET DO SIM reset signal 15 GND GND GND 16 UIM_V...

Страница 6: ... LED indicator 43 GND GND GND 44 LED_WLAN UIM_DET DI SIM Hot plug detection 45 RESERVED PCM_CLK DO PCM Clock pulse 46 LED_WPAN LED OC LED indicator 47 RESERVED PCM_DOUT DO PCM sending data 48 1 5V NC 49 RESERVED PCM_DIN DI PCM receiving data 50 GND GND GND 51 RESERVED PCM_SYNC DO PCM Frame synchronization signal 52 3 3Vaux VBAT PI Power input NOTE The IO interface level of module is 1 8V SIM inter...

Страница 7: ...ply Module in the transmission of data or instant call will produce more than 2A peak current and it s resulting in a larger power supply ripple so the customer s circuit design of power line should be as short as possible and wide enough It is recommended to reserve a 220uF capacitors near the power input It is recommended that customers can use DCDC or LDO to provide enough current Then the VBAT...

Страница 8: ...mode The USB input output routing needs to follow the USB2 0 characteristic and the USB interface is defined as follows PIN Signal IO Description 36 USB_D IO USB differential signal 38 USB_D IO USB differential signal Circuit diagram of USB connection NOTE USB routing design needs to strictly comply with the requirements of the USB2 0 protocol note the protection of the data line differential line...

Страница 9: ...level is 1 8V if the serial port needs to be connected with the MCU of 3 3V level it is necessary to add a level conversion chip to realize the matching chip connection can refer to the following design Level conversion circuit 3 6 USIM interface The module provides a USIM card interface compatible with the ISO 7816 3 standard and the USIM card power supply is internally powered by the module The ...

Страница 10: ... USIM_DET is the detection pins of USIM card to detect whether the USIM inserts or does not insert the default is high level When hot plug it needs this pin to detect the USIM status The USIM card and the module s GND needs to maintain good connectivity UIM_CLK GND should be protected independently 3 6 2 USIM_DET Hot plug reference design NO USIM_DET status Definition 1 HIGH SIM inserted 2 LOW SIM...

Страница 11: ...s sensitive to interference and should be paid attention to it when design Symbol Description Min Type Max Unit Treset Low level pulse width 50 100 500 ms VIH RESET input high level voltage 1 17 1 8 2 1 V VIL RESET input low level voltage 0 3 0 0 8 V ONOFF Pulling down this pin can power on the module Symbol Description Min Type Max Unit Ton Booting low level wide 100 500 ms Ton status Boot time j...

Страница 12: ...tration is 4G network or module registration is not 4G network into voice SMS and other services Flash quickly NOTE The brightness of the LED lamp can be adjusted by adjusting the current limiting resistance and the maximum current is 40mA 3 9 RF antenna connector 3 9 1 RF antenna connector position 3 9 2 RF antenna connector size The antenna connector must use a coaxial connector with 50 ohm char...

Страница 13: ...l use according to the user s circuit board line the antenna factory can optimize the matching device parameter value the motherboard R1 R2 R3 R4 default is stickered 0 Ohm C1 C2 C3 C4 default is blank stickers in order to prevent damage to the internal module of the electrostatic it is recommended to choose a two way TVS at the antenna connection D1 D2 3 10 Analog audio interface The module provi...

Страница 14: ...cation signal Audio signal is a sensitive signal it should be far away from the radiation source and power interface line as short as possible and protect sensitive signals In order to prevent the TDD noise the filter capacitor 10pF and 33pF are reserved to design the audio circuit to remove the RFI signal 3 11 PCM digital audio The module provides a set of PCM audio interfaces to support 8 bit A ...

Страница 15: ... gain including cable loss must not exceed 5 41dBi in GSM850 11 41dBi in EGPRS850 2 5dBi in GSM1900 8 0dBi in EGPRS1900 10 43dBi in WCDMA Band V 10 5dBi WCDMA Band II 11 0dBi in LTE Band 2 7 0dBi in LTE Band 4 11 42dBi in LTE Band 5 10 50dBi in LTE Band 7 for the purpose of satisfying the requirements of CFR 47 2 1043 2 1091 The antenna s used for this transmitter must be installed to provide a se...

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