User's Manual

GSM/GPRS/GNSS Module Series
MC60 Hardware Design
MC60_Hardware_Design Confidential / Released 4 / 99
3.4.2.1. Full on Mode.................................................................................................... 36
3.4.2.2. Standby Mode ................................................................................................. 37
3.4.2.3. Backup Mode .................................................................................................. 38
3.4.3. Summary of GSM and GNSS Parts’ State in All-in-one Solution .................................. 38
3.4.4. Summary of GSM and GNSS Parts’ State in Stand-alone Solution ............................. 39
3.5. Power on and down Scenarios in All-in-one Solution ............................................................ 39
3.5.1. Power on ..................................................................................................................... 39
3.5.2. Power down ................................................................................................................. 41
3.5.2.1. Power down Module Using the PWRKEY Pin ................................................. 41
3.5.2.2. Power down Module Using AT Command ....................................................... 43
3.5.2.3. Power down GNSS Part Alone Using AT Command ....................................... 43
3.5.2.4. Under-voltage Automatic Shutdown ................................................................ 44
3.5.3. Restart ......................................................................................................................... 44
3.6. Power on and down Scenarios in Stand-alone Solution ........................................................ 44
3.6.1. Power on GSM Part ..................................................................................................... 44
3.6.2. Power down GSM Part ................................................................................................ 46
3.6.2.1. Power down GSM Part Using the PWRKEY Pin ............................................. 46
3.6.2.2. Power down GSM Part using Command ......................................................... 47
3.7. Serial Interfaces .................................................................................................................... 47
3.7.1. UART Port ................................................................................................................... 50
3.7.1.1. Features of UART Port .................................................................................... 50
3.7.1.2. The Connection of UART ................................................................................ 51
3.7.1.3. Firmware Upgrade ........................................................................................... 52
3.7.2. Debug Port................................................................................................................... 53
3.7.3. Auxiliary UART Port and GNSS UART Port ................................................................. 54
3.7.3.1. Connection in All-in-one Solution ..................................................................... 54
3.7.3.2. Connection in Stand-alone Solution ................................................................ 54
3.7.4. UART Application ......................................................................................................... 55
3.8. Audio Interfaces .................................................................................................................... 56
3.8.1. Decrease TDD Noise and Other Noise ........................................................................ 58
3.8.2. Microphone Interfaces Design ..................................................................................... 58
3.8.3. Receiver and Speaker Interface Design ...................................................................... 59
3.8.4. Earphone Interface Design .......................................................................................... 60
3.8.5. Loud Speaker Interface Design.................................................................................... 60
3.8.6. Audio Characteristics ................................................................................................... 61
3.9. SIM Card Interface ............................................................................................................
.... 61
3.10. ADC ...................................................................................................................................... 65
3.11. Behaviors of the RI ............................................................................................................... 65
3.12. Network Status Indication ...................................................................................................... 67
3.13. EASY Autonomous AGPS Technology ................................................................................. 68
3.14. EPO Offline AGPS Technology ............................................................................................. 68
3.15. Multi-tone AIC ....................................................................................................................... 69
4 Antenna Interface ............................................................................................................................ 70
4.1. GSM Antenna Interface ......................................................................................................... 70