Hardware Design V1.00

Smart Machine Smart Decision
SIM2000S_Hardware_Design_V1.00 7 2014-02-27
Figure Index
FIGURE 1: SIM2000S FUNCTIONAL DIAGRAM ....................................................................................................... 12
FIGURE 2: SIM2000S PIN OUT DIAGRAM (TOP VIEW)........................................................................................... 13
FIGURE 3: DIMENSIONS OF SIM2000S (UNIT: MM)................................................................................................ 16
FIGURE 4: RECOMMENDED PCB FOOTPRINT OUTLINE (UNIT: MM) ................................................................ 17
FIGURE 5: REFERENCE CIRCUIT OF THE VBAT INPUT......................................................................................... 18
FIGURE 6: REFERENCE CIRCUIT OF THE LDO POWER SUPPLY......................................................................... 18
FIGURE 7: REFERENCE CIRCUIT OF THE DC-DC POWER SUPPLY..................................................................... 19
FIGURE 8: POWERED ON/DOWN MODULE USING TRANSISTOR....................................................................... 20
FIGURE 9: POWERED ON/DOWN MODULE USING BUTTON ............................................................................... 20
FIGURE 10: TIMING OF POWER ON MODULE......................................................................................................... 20
FIGURE 11: TIMING OF POWER DOWN SIM2000S BY PWRKEY .......................................................................... 21
FIGURE 12: RESET CIRCUIT........................................................................................................................................ 22
FIGURE 13: RESET TIMING SEQUENCE.................................................................................................................... 23
FIGURE 14: CONNECTION OF THE SERIAL INTERFACES..................................................................................... 26
FIGURE 15: CONNECTION OF THE INNER MODULE ............................................................................................. 26
FIGURE 16: LEVEL MATCHING CIRCUIT ................................................................................................................. 27
FIGURE 17: USB REFERENCE CIRCUIT .................................................................................................................... 27
FIGURE 18: RI BEHAVIOUR OF VOICE CALLING AS A RECEIVER...................................................................... 29
FIGURE 19: RI BEHAVIOUR OF DATA CALLING AS A RECEIVER........................................................................ 29
FIGURE 20: RI BEHAVIOUR OF URC OR RECEIVE SMS ........................................................................................ 29
FIGURE 21: RI BEHAVIOUR AS A CALLER ............................................................................................................... 30
FIGURE 22: SPEAKER REFERENCE CIRCUIT .......................................................................................................... 30
FIGURE 23: MICROPHONE REFERENCE CIRCUIT.................................................................................................. 31
FIGURE 24: REFERENCE CIRCUIT OF THE 8-PIN RUIM CARD HOLDER ........................................................... 32
FIGURE 25: REFERENCE CIRCUIT OF THE 6-PIN RUIM CARD HOLDER ........................................................... 32
FIGURE 26: MOLEX 91228 RUIM CARD HOLDER ................................................................................................... 33
FIGURE 27: AMPHENOL C707 10M006 5122 RUIM CARD HOLDER...................................................................... 34
FIGURE 28: PCM REFERENCE CIRCUIT.................................................................................................................... 35
FIGURE 29: SYNCHRONY TIMING............................................................................................................................. 35
FIGURE 30: EXT CODEC TO MODULE TIMING ....................................................................................................... 36
FIGURE 31: MODULE TO EXT CODEC TIMING ....................................................................................................... 36
FIGURE 32: SYNCHRONY TIMING............................................................................................................................. 37
FIGURE 33: EXT CODEC TO MODULE TIMING ....................................................................................................... 37
FIGURE 34: MODULE TO EXT CODEC TIMING ....................................................................................................... 37
FIGURE 35: KEYS REFERENCE CIRCUIT.................................................................................................................. 38
FIGURE 36: REFERENCE CIRCUIT OF PWM DRIVER BUZZER ............................................................................ 41
FIGURE 37: REFERENCE CIRCUIT OF NETLIGHT .................................................................................................. 42
FIGURE 38: ANTENNA MATCHING CIRCUIT ........................................................................................................... 43
FIGURE 39: PIN ASSIGNMENT .................................................................................................................................... 44
FIGURE 40: TOP AND BOTTOM VIEW OF SIM2000S ............................................................................................... 49
FIGURE 41: TYPICAL SOLDER REFLOW PROFILE ................................................................................................. 49