Product Info

Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 8 / 139
Figure Index
FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 23
FIGURE 2: PIN ASSIGNMENT (TOP VIEW)..................................................................................................... 25
FIGURE 3: VOLTAGE DROP SAMPLE ............................................................................................................. 43
FIGURE 4: STRUCTURE OF POWER SUPPLY .............................................................................................. 43
FIGURE 5: REFERFENCE CIRCUIT OF POWER SUPPLY ............................................................................ 44
FIGURE 6: TURN ON THE MODULE USING DRIVING CIRCUIT ................................................................... 45
FIGURE 7: TURN ON THE MODULE USING KEYSTROKE ........................................................................... 45
FIGURE 8: TIMING OF TURNING ON MODULE ............................................................................................. 46
FIGURE 9: TURN ON THE MODULE AUTOMATICALLY ................................................................................. 47
FIGURE 10: TIMING OF REBOOTING MODULE ............................................................................................ 47
FIGURE 11: RTC POWERED BY A RECHARGEABLE BUTTON CELL BATTERY ......................................... 48
FIGURE 12: REFERENCE DESIGN FOR BATTERY CHARGING CIRCUIT ................................................... 51
FIGURE 13: USB TYPE-C INTERFACE REFERENCE DESIGN ..................................................................... 54
FIGURE 14: DISPLAYPORT REFERENCE DESIGN ....................................................................................... 55
FIGURE 15: MICRO USB INTERFACE ............................................................................................................ 56
FIGURE 16: USB2 HOST .................................................................................................................................. 57
FIGURE 17: REFERENCE CIRCUIT WITH LEVEL TRANSLATOR CHIP (FOR UART6) ............................... 59
FIGURE 18: RS232 LEVEL MATCH CIRCUIT (FOR UART5) .......................................................................... 60
FIGURE 19: REFERENCE CIRCUIT FOR (U)SIM INTERFACE WITH AN 8-PIN (U)SIM CARD CONNECTOR
........................................................................................................................................................................... 61
FIGURE 20: REFERENCE CIRCUIT FOR (U)SIM INTERFACE WITH A 6-PIN (U)SIM CARD CONNECTOR
........................................................................................................................................................................... 62
FIGURE 21: REFERENCE CIRCUIT FOR SD CARD INTERFACE ................................................................. 63
FIGURE 22: LCM0 EXTERNAL BACKLIGHT DRIVER REFERENCE CIRCUIT ............................................. 71
FIGURE 23: REFERENCE CIRCUIT DESIGN FOR LCM1 INTERFACE ......................................................... 71
FIGURE 24: REFERENCE CIRCUIT DESIGN FOR LCM0 INTERFACE ......................................................... 72
FIGURE 25: REFERENCE CIRCUIT DESIGN FOR LCM1 INTERFACE ......................................................... 73
FIGURE 26: REFERENCE CIRCUIT DESIGN FOR TP0 INTERFACE ............................................................ 75
FIGURE 27: REFERENCE CIRCUIT DESIGN FOR DUAL CAMERA APPLICATIONS ................................... 78
FIGURE 28: REFERENCE CIRCUIT DESIGN FOR TWO-CAMERA APPLICATIONS .................................... 79
FIGURE 29: REFERENCE CIRCUIT DESIGN FOR THREE-CAMERA APPLICATIONS ................................ 80
FIGURE 30: REFERENCE CIRCUIT DESIGN FOR ANALOG ECM-TYPE MICROPHONE ........................... 85
FIGURE 31: REFERENCE CIRCUIT DESIGN FOR MEMS-TYPE MICROPHONE ........................................ 86
FIGURE 32: REFERENCE CIRCUIT DESIGN FOR EARPIECE INTERFACE ................................................ 86
FIGURE 33: REFERENCE CIRCUIT DESIGN FOR HEADPHONE INTERFACE ........................................... 87
FIGURE 34: REFERENCE CIRCUIT DESIGN FOR LOUDSPEAKER INTERFACE ....................................... 87
FIGURE 35: REFERENCE CIRCUIT DESIGN FOR EMERGENCY DOWNLOAD INTERFACE ..................... 88
FIGURE 36: REFERENCE CIRCUIT DESIGN FOR MAIN AND RX-DIVERSITY ANTENNA INTERFACES .. 99
FIGURE 37: MICROSTRIP DESIGN ON A 2-LAYER PCB ............................................................................. 100
FIGURE 38: COPLANAR WAVEGUIDE DESIGN ON A 2-LAYER PCB ......................................................... 100
FIGURE 39: COPLANAR WAVEGUIDE DESIGN ON A 4-LAYER PCB (LAYER 3 AS REFERENCE GROUND)