User Manual
GSM/GPRS Module Series
GC10 Hardware Design
GC10_Hardware_Design Confidential / Released 6 / 76
Figure Index
FIGURE 1: MODULE FUNCTIONAL DIAGRAM ............................................................................................... 14
FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 16
FIGURE 3: VOLTAGE DROP DURING TRANSMITTING ................................................................................. 22
FIGURE 4: REFERENCE CIRCUIT FOR THE VBAT INPUT ........................................................................... 23
FIGURE 5: REFERENCE CIRCUIT FOR POWER SUPPLY ............................................................................ 24
FIGURE 6: REFERENCE DIAGRAM FOR SWITCHING POWER CONVERTER ........................................... 24
FIGURE 7: TURN ON THE MODULE WITH AN OC DRIVER .......................................................................... 25
FIGURE 8: TURN ON THE MODULE WITH A BUTTON .................................................................................. 25
FIGURE 9: TURN-ON TIMING .......................................................................................................................... 26
FIGURE 10: TURN-OFF TIMING ...................................................................................................................... 27
FIGURE 11: AN OC DRIVER FOR EMERG_OFF ............................................................................................ 29
FIGURE 12: REFERENCE CIRCUIT FOR EMERG_OFF BY BUTTON .......................................................... 29
FIGURE 13: TIMING OF RESTARTING SYSTEM ............................................................................................ 30
FIGURE 14: TIMING OF RESTARTING SYSTEM AFTER EMERGENCY SHUTDOWN ................................ 30
FIGURE 15: RTC SUPPLIED FROM A NON-CHARGEABLE BATTERY ......................................................... 33
FIGURE 16: RTC SUPPLIED FROM A RECHARGEABLE BATTERY ............................................................. 33
FIGURE 17: RTC SUPPLIED FROM A CAPACITOR ....................................................................................... 33
FIGURE 18: CHARGING CHARACTERISTICS OF SEIKO’S XH414H-IV01E ................................................ 34
FIGURE 19: REFERENCE DESIGN FOR FULL-FUNCTION UART ................................................................ 37
FIGURE 20: REFERENCE DESIGN FOR UART PORT ................................................................................... 38
FIGURE 21: REFERENCE DESIGN FOR UART PORT WITH HARDWARE FLOW CONTROL .................... 38
FIGURE 22: THE CONNECTION OF FIRMWARE DEBUGGING AND UPGRADE......................................... 39
FIGURE 23: LEVEL MATCH DESIGN FOR 3.3V SYSTEM .............................................................................. 39
FIGURE 24: LEVEL MATCH DESIGN FOR 5V SYSTEM ................................................................................. 40
FIGURE 25: LEVEL MATCH DESIGN FOR RS-232 ......................................................................................... 41
FIGURE 26: REFERENCE DESIGN FOR AIN1&AIN2 ..................................................................................... 43
FIGURE 27: REFERENCE RECEIVER INTERFACE DESIGN OF AOUT1 ..................................................... 44
FIGURE 28: SPEAKER INTERFACE WITH AMPLIFIER CONFIGURATION OF AOUT1................................ 44
FIGURE 29: REFERENCE RECEIVER INTERFACE DESIGN OF AOUT2 ..................................................... 45
FIGURE 30: SPEAKER INTERFACE WITH AMPLIFIER CONFIGURATION OF AOUT2................................ 45
FIGURE 31: EARPHONE INTERFACE DESIGN .............................................................................................. 46
FIGURE 32: REFERENCE CIRCUIT FOR 8-PIN SIM CARD HOLDER .......................................................... 48
FIGURE 33: REFERENCE CIRCUIT FOR 6-PIN SIM CARD HOLDER .......................................................... 49
FIGURE 34: AMPHENOL C707 10M006 512 2 SIM CARD HOLDER .............................................................. 50
FIGURE 35: MOLEX 91228 SIM CARD HOLDER ............................................................................................ 51
FIGURE 36: RI BEHAVIOUR OF VOICE CALLING AS A RECEIVER ............................................................. 52
FIGURE 37: RI BEHAVIOUR AS A CALLER ..................................................................................................... 53
FIGURE 38: RI BEHAVIOUR OF URC OR SMS RECEIVED ........................................................................... 53
FIGURE 39: REFERENCE DESIGN FOR NETLIGHT ..................................................................................... 54
FIGURE 40: REFERENCE DESIGN FOR RF .................................................................................................. 55
FIGURE 41: RF SOLDERING SAMPLE ........................................................................................................... 57