User Manual

GSM/GPRS Module Series
GC10 Hardware Design
GC10_Hardware_Design Confidential / Released 4 / 76
3.7.1.2. The Connection of UART .................................................................................. 37
3.7.2. Debug and Upgrade Port ............................................................................................... 38
3.7.3. UART Application ........................................................................................................... 39
3.8. Audio Interfaces ..................................................................................................................... 41
3.8.1. Decrease TDD Noise and Other Noises ........................................................................ 42
3.8.2. Microphone Interfaces Design ....................................................................................... 43
3.8.3. Receiver Interface Design .............................................................................................. 44
3.8.4. Earphone Interface Design ............................................................................................ 46
3.8.5. Audio Characteristics ..................................................................................................... 46
3.9. SIM Card Interface ................................................................................................................ 47
3.9.1. SIM Card Application ...................................................................................................... 47
3.9.2. SIM Cassette .................................................................................................................. 49
3.10. PCM Interface ........................................................................................................................ 52
3.11. Behaviors of the RI ................................................................................................................ 52
3.12. Network Status Indication ...................................................................................................... 53
4 Antenna Interface ............................................................................................................................... 55
4.1. RF Reference Design ............................................................................................................ 55
4.2. RF Output Power ................................................................................................................... 56
4.3. RF Receiving Sensitivity ........................................................................................................ 56
4.4. Operating Frequencies .......................................................................................................... 57
4.5. RF Cable Soldering ............................................................................................................... 57
5 Electrical, Reliability and Radio Characteristics ............................................................................ 58
5.1. Absolute Maximum Ratings................................................................................................... 58
5.2. Operating Temperature ......................................................................................................... 59
5.3. Power Supply Ratings ........................................................................................................... 59
5.4. Current Consumption ............................................................................................................ 60
5.5. Electro-static Discharge ........................................................................................................ 61
6 Mechanical Dimensions .................................................................................................................... 63
6.1. Mechanical Dimensions of Module ....................................................................................... 63
6.2. Recommended Footprint ....................................................................................................... 65
7 Storage and Manufacturing .............................................................................................................. 66
7.1. Storage .................................................................................................................................. 66
7.2. Soldering ............................................................................................................................... 67
7.3. Packaging .............................................................................................................................. 68
7.3.1. Tape and Reel Packaging .............................................................................................. 68
8 Appendix A Reference ....................................................................................................................... 70
9 Appendix B GPRS Coding Scheme ................................................................................................. 74
10 Appendix C GPRS Multi-slot Class .................................................................................................. 76