Quectel SC600T-EM Series, Hardware Design

Page: 9 / 136

Smart LTE Module Series
SC600Y&SC600T Hardware Design
SC600Y&SC600T_Hardware_Design 8 / 128
Figure Index
FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 23
FIGURE 2: PIN ASSIGNMENT (TOP VIEW)..................................................................................................... 26
FIGURE 3: VOLTAGE DROP SAMPLE ............................................................................................................. 43
FIGURE 4: STAR STRUCTURE OF POWER SUPPLY .................................................................................... 44
FIGURE 5: REFERENCE CIRCUIT OF POWER SUPPLY .............................................................................. 45
FIGURE 6: TURN ON THE MODULE USING DRIVING CIRCUIT ................................................................... 46
FIGURE 7: TURN ON THE MODULE USING KEYSTROKE ........................................................................... 46
FIGURE 8: TIMING OF TURNING ON MODULE ............................................................................................. 47
FIGURE 9: TIMING OF TURNING OFF MODULE ........................................................................................... 48
FIGURE 10: RTC POWERED BY COIN CELL ................................................................................................. 48
FIGURE 11: REFERENCE DESIGN FOR BATTERY CHARGING CIRCUIT ................................................... 51
FIGURE 12: USB 2.0 INTERFACE REFERENCE DESIGN ............................................................................. 53
FIGURE 13: USB TYPE-C INTERFACE REFERENCE DESIGN ..................................................................... 53
FIGURE 14: REFERENCE CIRCUIT WITH LEVEL TRANSLATOR CHIP (FOR UART5) .............................. 55
FIGURE 15: RS232 LEVEL MATCH CIRCUIT (FOR UART5) .......................................................................... 56
FIGURE 16: REFERENCE CIRCUIT FOR (U)SIM INTERFACE WITH AN 8-PIN (U)SIM CARD CONNECTOR
................................................................................................................................................................... 57
FIGURE 17: REFERENCE CIRCUIT FOR (U)SIM INTERFACE WITH A 6-PIN (U)SIM CARD CONNECTOR
................................................................................................................................................................... 58
FIGURE 18: REFERENCE CIRCUIT FOR SD CARD INTERFACE ................................................................. 59
FIGURE 19: REFERENCE CIRCUIT FOR VIBRATOR CONNECTION ........................................................... 66
FIGURE 20: REFERENCE CIRCUIT DESIGN FOR LCM0 INTERFACE ......................................................... 68
FIGURE 21: REFERENCE CIRCUIT DESIGN FOR LCM1 INTERFACE ......................................................... 69
FIGURE 22: REFERENCE DESIGN OF LCM1 EXTERNAL BACKLIGHT DRIVING CIRCUIT ....................... 70
FIGURE 23: REFERENCE CIRCUIT DESIGN FOR TOUCH PANEL INTERFACES ....................................... 71
FIGURE 24: REFERENCE CIRCUIT DESIGN FOR TWO-CAMERA APPLICATIONS .................................... 75
FIGURE 25: REFERENCE CIRCUIT DESIGN FOR THREE-CAMERA APPLICATIONS ................................ 76
FIGURE 26: REFERENCE CIRCUIT DESIGN FOR FLASHLIGHT INTERFACES .......................................... 80
FIGURE 27: REFERENCE CIRCUIT DESIGN FOR ANALOG ECM-TYPE MICROPHONE ........................... 82
FIGURE 28: REFERENCE CIRCUIT DESIGN FOR MEMS-TYPE MICROPHONE ........................................ 82
FIGURE 29: REFERENCE CIRCUIT DESIGN FOR EARPIECE INTERFACE ................................................ 83
FIGURE 30: REFERENCE CIRCUIT DESIGN FOR HEADPHONE INTERFACE ........................................... 83
FIGURE 31: REFERENCE CIRCUIT DESIGN FOR LOUDSPEAKER INTERFACE ....................................... 84
FIGURE 32: REFERENCE CIRCUIT DESIGN FOR EMERGENCY DOWNLOAD INTERFACE ..................... 85
FIGURE 33: REFERENCE CIRCUIT DESIGN FOR MAIN AND RX-DIVERSITY ANTENNA INTERFACES .. 95
FIGURE 34: MICROSTRIP DESIGN ON A 2-LAYER PCB ............................................................................... 96
FIGURE 35: COPLANAR WAVEGUIDE DESIGN ON A 2-LAYER PCB ........................................................... 96
FIGURE 36: COPLANAR WAVEGUIDE DESIGN ON A 4-LAYER PCB (LAYER 3 AS REFERENCE GROUND)
................................................................................................................................................................... 97
FIGURE 37: COPLANAR WAVEGUIDE DESIGN ON A 4-LAYER PCB (LAYER 4 AS REFERENCE GROUND)
................................................................................................................................................................... 97