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Contents
Contents..........................................................................................................................................................................２
1．Introduction.................................................................................................................................................................3
1.1 Overview .................................................................................. 3
1.2 Application scenario ........................................................................ 3
2. U6100 interfaces..........................................................................................................................................................4
2.1 U6100 interface summary ................................................................... 4
2.1.1 Test points...............................................................................................................................................................5
2.1.2 Board to board connector.....................................................................................................................................5
2.1.3 RF interface ............................................................................................................................................................9
2.2 Application note of U6100 interfaces ......................................................... 10
2.2.1 RF antenna interface...........................................................................................................................................10
2.2.2 Power supply and ground...................................................................................................................................10
2.2.3 USB interface........................................................................................................................................................11
2.2.4 USIM interface......................................................................................................................................................12
2.2.5 Micro SD card interface.......................................................................................................................................14
2.2.6 Audio interface......................................................................................................................................................15
2.2.7 PCM interface and SPI interface.......................................................................................................................17
2.2.8 UART interface.....................................................................................................................................................18
2.2.9 LED control ...........................................................................................................................................................19
2.2.10 Others..................................................................................................................................................................21
3. U6100 key features...................................................................................................................................................22
3.1 Internet access ........................................................................... 22
3.2 SMS ..................................................................................... 23
3.3 start-up mode switching .................................................................... 23
3.4 Extended Mass Memory .................................................................... 24
4. Application Illustration...............................................................................................................................................24
4.1 Dial-up procedure ......................................................................... 24
4.2 SMS ..................................................................................... 25
4.2.1 Message Format..................................................................................................................................................25
4.2.2 Set Message Storage Location..........................................................................................................................25
4.2.3 PDU Format..........................................................................................................................................................26
4.2.4 TEXT Format ........................................................................................................................................................27
4.2.5 SMS Service Center Address Setting...............................................................................................................29
4.3 Start-up Mode Switching ................................................................... 29
Appendix：Mechanical dimensions of U6100 ..................................................... 30
