Specifications

SIM7912&SIM7906 Hardware Design V1.02
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Figure Index
Figure 1: SIM7912&SIM7906 module block diagram ............................................................................. 12
Figure 2: Pin assignment ......................................................................................................................... 15
Figure 3: Dimensions of SIM7912&SIM7906 (unit: mm) ........................................................................ 25
Figure 4: Power Supply Limits during Burst Transmission...................................................................... 26
Figure 5: Power supply reference circuit ................................................................................................. 27
Figure 6: Linear regulator reference circuit ............................................................................................. 28
Figure 7: Switching mode power supply reference circuit ...................................................................... 28
Figure 8: Power on the module use button ............................................................................................. 29
Figure 9: Power on the module use GPIO drive ..................................................................................... 29
Figure 10: Power on sequence ............................................................................................................... 30
Figure 11: Power off sequence ................................................................................................................ 31
Figure 12: Reset the module use GPIO drive ......................................................................................... 32
Figure 13: Reset the module use button ................................................................................................. 32
Figure 14: The reset timing sequence of the module .............................................................................. 33
Figure 15: Reference Circuit of USB Application .................................................................................... 35
Figure 16: PCIe interface reference circuit (RC Mode) ........................................................................... 37
Figure 17: PCIe interface reference circuit (EP) ..................................................................................... 38
Figure 18: SD card reference circuit........................................................................................................ 39
Figure 19: SIM interface reference circuit ............................................................................................... 41
Figure 20: I2S timing ............................................................................................................................... 44
Figure 21: Audio codec reference circuit ................................................................................................. 44
Figure 22: I2C reference circuit ............................................................................................................... 45
Figure 23: UART level conversion circuit ................................................................................................ 47
Figure 24: UART TX level conversion circuit ........................................................................................... 47
Figure 25: UART RX level conversion circuit .......................................................................................... 47
Figure 26: SPI reference circuit ............................................................................................................... 48
Figure 27: Network Indicator reference circuit ........................................................................................ 50
Figure 28: Reference Circuits of STATUS ............................................................................................... 51
Figure 29: W_DISABLE# pin reference circuit ........................................................................................ 51
Figure 30: Reference Circuit of USB_BOOT........................................................................................... 52
Figure 31: Aperture tuner reference block diagram ................................................................................ 58
Figure 32: Impedance tuner reference block diagram ............................................................................ 58
Figure 33: Hybrid tuner reference block diagram .................................................................................... 59
Figure 34: M.2 package Tuner mipi interface .......................................................................................... 59
Figure 35: LGA package Tuner mipi interface ......................................................................................... 60
Figure 36: Top and bottom view of Module ............................................................................................. 70
Figure 37: Label description of module ................................................................................................... 70
Figure 38: Recommended PCB footprint ................................................................................................ 72
Figure 39: Recommended SMT stencil ................................................................................................... 73
Figure 40: Recommended SMT reflow profile ......................................................................................... 74
Figure 41: Packaging process ................................................................................................................. 76
Figure 42: Module tray drawing ............................................................................................................... 76