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CLM920_NC3_LTE Module hardware manual
Shanghai Yuge Information Technology co., LTD
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Contents
Chapter 1. Introduction...........................................................................................................- 9 -
Chapter 2. Module review.................................................................................................... - 10 -
2.1Module introduction................................................................................................ - 10 -
2.2 Module characteristics............................................................................................- 10 -
2.3 Module function..................................................................................................... - 14 -
3.1 Chapter overview....................................................................................................- 16 -
3.2 Module interface.....................................................................................................- 17 -
3.2.1 144-pin LCC interface.................................................................................- 17 -
3.2.2 Interface definition...................................................................................... - 18 -
3.3.1 Power supply design....................................................................................- 25 -
3.3.2 Power reference circuit................................................................................- 26 -
3.3.3 VDD_SDIO 1.8V/2.85V Voltage output.....................................................- 28 -
3.3.4 VDD_EXT 1V8 Voltage output...................................................................- 28 -
3.4.1 Boot............................................................................................................. - 28 -
3.4.2 Boot timing..................................................................................................- 29 -
3.4.3 Shut down....................................................................................................- 30 -
3.4.4 Reset control................................................................................................- 30 -
3.5 USB interface......................................................................................................... - 31 -
3.6 UART interface...................................................................................................... - 33 -
3.6.1 Main serial port............................................................................................- 33 -
3.6.2 Debug serial port......................................................................................... - 35 -
3.6.3 RI and DTR interface.................................................................................. - 35 -
3.7.1 USIM card reference circuit........................................................................ - 37 -
3.7.2 UIM_DET Hot Swap Reference Design..................................................... - 38 -
3.8 General purpose GPIO interface............................................................................ - 39 -
3.9 Network status indication interface........................................................................- 40 -
3.10 Module status indication.......................................................................................- 41 -
3.11 PCM digital voice interface..................................................................................- 42 -