User's Manual

GSM/GPRS/GNSS Module Series
MC60 Hardware Design
MC60_Hardware_Design Confidential / Released 8 / 99
Figure Index
FIGURE 1: MODULE FUNCTIONAL DIAGRAM ............................................................................................... 18
FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 20
FIGURE 3: ALL-IN-ONE SOLUTION SCHEMATIC DIAGRAM ......................................................................... 26
FIGURE 4: STAND-ALONE SOLUTION SCHEMATIC DIAGRAM ................................................................... 26
FIGURE 5: VOLTAGE RIPPLE DURING TRANSMITTING .............................................................................. 28
FIGURE 6: REFERENCE CIRCUIT FOR THE VBAT INPUT ........................................................................... 28
FIGURE 7: REFERENCE CIRCUIT FOR THE GNSS_VCC INPUT ................................................................. 29
FIGURE 8: REFERENCE CIRCUIT FOR POWER SUPPLY OF THE GSM PART .......................................... 30
FIGURE 9: REFERENCE CIRCUIT DESIGN FOR GNSS PART IN ALL-IN-ONE SOLUTION ........................ 31
FIGURE 10: REFERENCE CIRCUIT DESIGN FOR GNSS PART IN STAND-ALONE SOLUTION ................ 31
FIGURE 11: INTERNAL GNSS’S BACKUP DOMAIN POWER CONSTRUCTION .......................................... 32
FIGURE 12: VRTC IS POWERED BY A RECHARGEABLE BATTERY ........................................................... 33
FIGURE 13: VRTC IS POWERED BY A CAPACITOR ...................................................................................... 33
FIGURE 14: TURN ON THE MODULE WITH AN OPEN-COLLECTOR DRIVER ............................................ 39
FIGURE 15: TURN ON THE MODULE WITH A BUTTON ................................................................................ 40
FIGURE 16: TURN-ON TIMING ........................................................................................................................ 41
FIGURE 17: TURN-OFF TIMING BY USING THE PWRKEY PIN .................................................................... 42
FIGURE 18: TURN-OFF TIMING OF GNSS PART BY USING AT COMMAND ............................................... 43
FIGURE 19: TURN-ON TIMING OF GSM PART .............................................................................................. 45
FIGURE 20: TURN-OFF TIMING OF GSM PART BY USING THE PWRKEY PIN .......................................... 47
FIGURE 21: REFERENCE DESIGN FOR FULL-FUNCTION UART ................................................................ 51
FIGURE 22: REFERENCE DESIGN FOR UART PORT (THREE LINE CONNECTION)................................. 52
FIGURE 23: REFERENCE DESIGN FOR UART PORT WITH HARDWARE FLOW CONTROL .................... 52
FIGURE 24: REFERENCE DESIGN FOR FIRMWARE UPGRADE ................................................................. 53
FIGURE 25: REFERENCE DESIGN FOR DEBUG PORT ............................................................................... 53
FIGURE 26: AUXILIARY AND GNSS UART PORT CONNECTION IN ALL-IN-ONE SOLUTION .................... 54
FIGURE 27: AUXILIARY AND GNSS UART PORT CONNECTION IN STAND-ALONE SOLUTION .............. 55
FIGURE 28: LEVEL MATCH DESIGN FOR 3.3V SYSTEM.............................................................................. 55
FIGURE 29: SKETCH MAP FOR RS-232 INTERFACE MATCH ...................................................................... 56
FIGURE 30: REFERENCE DESIGN FOR AIN ................................................................................................. 58
FIGURE 31: HANDSET INTERFACE DESIGN FOR AOUT1 ........................................................................... 59
FIGURE 32: SPEAKER INTERFACE DESIGN WITH AN AMPLIFIER FOR AOUT1 ....................................... 59
FIGURE 33: EARPHONE INTERFACE DESIGN .............................................................................................. 60
FIGURE 34: LOUD SPEAKER INTERFACE DESIGN ...................................................................................... 60
FIGURE 35: REFERENCE CIRCUIT FOR SIM1 INTERFACE WITH AN 8-PIN SIM CARD HOLDER ............ 63
FIGURE 36: REFERENCE CIRCUIT FOR SIM1 INTERFACE WITH A 6-PIN SIM CARD HOLDER .............. 63
FIGURE 37: REFERENCE CIRCUIT FOR SIM2 INTERFACE WITH A 6-PIN SIM CARD HOLDER .............. 64
FIGURE 38: RI BEHAVIOR AS A RECEIVER WHEN VOICE CALLING .......................................................... 66
FIGURE 39: RI BEHAVIOR AS A CALLER ....................................................................................................... 66
FIGURE 40: RI BEHAVIOR WHEN URC OR SMS RECEIVED ....................................................................... 66
FIGURE 41: REFERENCE DESIGN FOR NETLIGHT ..................................................................................... 67