Quectel M35 User Manual page 9

GSM/GPRS Module Series
M35 User Manual
Figure Index
FIGURE 1: MODULE FUNCTIONAL DIAGRAM ............................................................................................... 16
FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 18
FIGURE 3: VOLTAGE RIPPLE DURING TRANSMITTING .............................................................................. 25
FIGURE 4: REFERENCE CIRCUIT FOR THE VBAT INPUT ........................................................................... 26
FIGURE 5: REFERENCE CIRCUIT FOR POWER SUPPLY ............................................................................ 26
FIGURE 6: TURN ON THE MODULE WITH AN OPEN-COLLECTOR DRIVER .............................................. 27
FIGURE 7: TURN ON THE MODULE WITH A BUTTON .................................................................................. 28
FIGURE 8: TURN-ON TIMING .......................................................................................................................... 28
FIGURE 9: TURN-OFF TIMING ........................................................................................................................ 29
FIGURE 10: AN OPEN-COLLECTOR DRIVER FOR EMERG_OFF ................................................................ 31
FIGURE 11: REFERENCE CIRCUIT FOR EMERG_OFF BY USING BUTTON .............................................. 32
FIGURE 12: TIMING OF RESTARTING SYSTEM ............................................................................................ 32
FIGURE 13: TIMING OF RESTARTING SYSTEM AFTER EMERGENCY SHUTDOWN ................................ 33
FIGURE 14: VRTC IS SUPPLIED BY A NON-CHARGEABLE BATTERY ........................................................ 36
FIGURE 15: VRTC IS SUPPLIED BY A RECHARGEABLE BATTERY ............................................................ 36
FIGURE 16: VRTC IS SUPPLIED BY A CAPACITOR ...................................................................................... 36
FIGURE 17: REFERENCE DESIGN FOR FULL-FUNCTION UART ................................................................ 40
FIGURE 18: REFERENCE DESIGN FOR UART PORT ................................................................................... 41
FIGURE 19: REFERENCE DESIGN FOR UART PORT WITH HARDWARE FLOW CONTROL .................... 41
FIGURE 20: REFERENCE DESIGN FOR FIRMWARE UPGRADE ................................................................. 42
FIGURE 21: REFERENCE DESIGN FOR DEBUG PORT ............................................................................... 43
FIGURE 22: LEVEL MATCH DESIGN FOR 3.3V SYSTEM .............................................................................. 43
FIGURE 23: SKETCH MAP FOR RS-232 INTERFACE MATCH ...................................................................... 44
FIGURE 24: REFERENCE DESIGN FOR AIN1&AIN2 ..................................................................................... 46
FIGURE 25: REFERENCE INTERFACE DESIGN OF AOUT1 ......................................................................... 47
FIGURE 26: EARPHONE INTERFACE DESIGN .............................................................................................. 47
FIGURE 27: LOUD SPEAKER INTERFACE DESIGN ...................................................................................... 48
FIGURE 28: LONG SYNCHRONIZATION & SIGN EXTENSION DIAGRAM ................................................... 51
FIGURE 29: LONG SYNCHRONIZATION & ZERO PADDING DIAGRAM....................................................... 51
FIGURE 30: SHORT SYNCHRONIZATION & SIGN EXTENSION DIAGRAM ................................................. 51
FIGURE 31: SHORT SYNCHRONIZATION & ZERO PADDING DIAGRAM .................................................... 52
FIGURE 32: REFERENCE DESIGN FOR PCM ............................................................................................... 52
FIGURE 33: REFERENCE CIRCUIT FOR SIM1 INTERFACE WITH 8-PIN SIM CARD HOLDER ................. 55
FIGURE 34: REFERENCE CIRCUIT FOR SIM1 INTERFACE WITH THE 6-PIN SIM CARD HOLDER ......... 55
FIGURE 35: REFERENCE CIRCUIT FOR SIM2 INTERFACE WITH THE 6-PIN SIM CARD HOLDER ......... 56
FIGURE 36: RI BEHAVIOR OF VOICE CALLING AS A RECEIVER ................................................................ 57
FIGURE 37: RI BEHAVIOR AS A CALLER ....................................................................................................... 58
FIGURE 38: RI BEHAVIOR OF URC OR SMS RECEIVED ............................................................................. 58
FIGURE 39: REFERENCE DESIGN FOR NETLIGHT ..................................................................................... 59
FIGURE 40: REFERENCE DESIGN FOR STATUS .......................................................................................... 60
FIGURE 41: REFERENCE DESIGN FOR RF .................................................................................................. 61
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