Quectel MC60, Проектирование аппаратного обеспечения

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GSM/GPRS/GNSS Module Series
MC60 Series Hardware Design
MC60_Series_Hardware_Design Confidential / Released 4 / 114
3.6.2.4. Periodic Mode ................................................................................................. 39
3.6.2.5. AlwaysLocate
TM
Mode ..................................................................................... 41
3.6.2.6. GLP Mode ....................................................................................................... 42
3.6.3.
Summary of GSM and GNSS Parts’ State in All-in-one Solution .................................. 43
3.6.4.
Summary of GSM and GNSS Parts’ State in Stand-alone Solution ............................. 43
3.6.5. BT Function ................................................................................................................. 44
3.7. Power on and down Scenarios in All-in-one Solution ............................................................ 44
3.7.1. Power on ..................................................................................................................... 44
3.7.2. Power down ................................................................................................................. 46
3.7.2.1. Power down Module Using the PWRKEY Pin ................................................. 46
3.7.2.2. Power down Module Using AT Command ....................................................... 48
3.7.2.3. Power down GNSS part Alone Using AT Command ........................................ 48
3.7.2.4. Under-voltage Automatic Shutdown ................................................................ 49
3.8. Power on and down Scenarios in Stand-alone Solution ........................................................ 49
3.8.1. Power on GSM Part ..................................................................................................... 49
3.8.2. Power down GSM Part ................................................................................................ 51
3.8.2.1. Power down GSM Part Using the PWRKEY Pin ............................................. 51
3.8.2.2. Power down GSM Part using Command ......................................................... 52
3.9. Serial Interfaces .................................................................................................................... 53
3.9.1. UART Port ................................................................................................................... 55
3.9.1.1. Features of UART Port .................................................................................... 55
3.9.1.2. The Connection of UART ................................................................................ 56
3.9.1.3. Firmware Upgrade ........................................................................................... 58
3.9.2. Debug Port................................................................................................................... 58
3.9.3. Auxiliary UART Port and GNSS UART Port ................................................................. 59
3.9.3.1. Connection in All-in-one Solution ..................................................................... 59
3.9.3.2. Connection in Stand-alone Solution ................................................................ 59
3.9.4. UART Application ......................................................................................................... 60
3.10. Audio Interfaces .................................................................................................................... 61
3.10.1. Decrease TDD Noise and Other Noises ...................................................................... 63
3.10.2. Microphone Interfaces Design ..................................................................................... 63
3.10.3. Receiver and Speaker Interface Design ...................................................................... 64
3.10.4. Earphone Interface Design .......................................................................................... 65
3.10.5. Loud Speaker Interface Design.................................................................................... 65
3.10.6. Audio Characteristics ................................................................................................... 66
3.11. PCM Interface ....................................................................................................................... 67
3.11.1. Parameter Configuration .............................................................................................. 67
3.11.2. Timing Diagram............................................................................................................ 68
3.11.3. Reference Design ........................................................................................................ 69
3.11.4. AT Command ............................................................................................................... 69
3.12. (U)SIM Card Interface ........................................................................................................... 70
3.13. SD Card Interface ................................................................................................................. 73
3.14. ADC ...................................................................................................................................... 75
3.15. Behaviors of the RI ............................................................................................................... 76
Quectel
Confidential