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CLM920_NC3_LTE Module Hardware User Guide
Shang Hai YUGE Information Technology co., LTD
Page 2 of 37
Contents
Chapter 1. Introduction...................................................................................................................................... 5
Chapter 2. Module review..................................................................................................................................6
2.1 Product Introduction............................................................................................................................ 6
2.2 Module characteristics......................................................................................................................... 7
2.3 Module function...................................................................................................................................9
3.1 Overview of this chapter....................................................................................................................10
3.2 Module interface................................................................................................................................ 11
3.2.1 52-pin gold finger................................................................................................................... 11
3.2.2 Interface Definition.................................................................................................................12
3.3 Power Interface.................................................................................................................................. 14
3.4 Switching machine reset mode.......................................................................................................... 16
3.4.1 Boot Timing............................................................................................................................ 16
3.4.2 Power-off shutdown................................................................................................................17
3.4.3 Reset control........................................................................................................................... 17
3.5 USB interface.....................................................................................................................................18
3.6 UART interface..................................................................................................................................19
3.7 USIM Interface.................................................................................................................................. 20
3.7.1 USIM Card Reference Circuit................................................................................................ 20
3.7.2 USIM_DET Hot Swap Reference Design..............................................................................21
3.8 General GPIO Interface..................................................................................................................... 22
3.9 Network indication interface............................................................................................................. 22
3.10 RF antenna interface........................................................................................................................ 23
3.10.1 RF connector position...........................................................................................................23
3.10.2 RF Connector Size................................................................................................................24
3.11.1 Analog Voice Reference Design........................................................................................... 26
3.11.2 PCM digital voice interface.................................................................................................. 27
4.1 Chapter overview...............................................................................................................................28
4.2 Working frequency.............................................................................................................................28
4.3 Conducted RF Measurement............................................................................................................. 29
4.4 Conducted Receive Sensitivity and Transmit Power........................................................................ 29
4.5 Antenna requirements........................................................................................................................ 30
4.6 Power Consumption Characteristics..................................................................................................31