MEIG SLM770A - Page 7

SLM770A Module Hardware Design Manual
MeiG Smart Technology Co., Ltd 77/77
Figure Index
Figure 1 Functional block diagram ............................................................................ 错误!未定义书签。
Figure 1 SLM770A-SC Functional block diagram ..................................................... 错误!未定义书签。
Figure 2 Module pin number diagram（TOP VIEW） ......................................................................... 17
Figure 3 Switching machine threshold ................................................................................................. 28
Figure 4 Power requirements for burst transmission........................................................................... 28
Figure 5 Reference circuit for power supply ........................................................................................ 29
Figure 6 Reference design for power supply input .............................................................................. 30
Figure 7 VDD_EXT external capacitor and ESD schematic diagram ................................................. 31
Figure 8 Turn on the module using driving circuit ............................................................................... 31
Figure 9 Turn on the module using button ........................................................................................... 32
Figure 10 Timing of turning on module .................................................................................................. 32
Figure 11 Timing of turning off module .................................................................................................. 33
Figure 12 Reference circuit of RESET_N by using driving circuit ......................................................... 34
Figure 13 Reference circuit of RESET_N by using button .................................................................... 35
Figure 14 Reset timing of RESET_N ..................................................................................................... 35
Figure 15 Reference circuit for 8-pin USIM/SIM connector .................................................................. 36
Figure 16 Reference circuit for 6-pin USIM/SIM connector .................................................................. 37
Figure 17 USB reference circuit design ................................................................................................. 39
Figure 18 Level conversion chip reference circuit ................................................................................. 41
Figure 19 Short frame pattern timing diagram ...................................................................................... 42
Figure 20 PCM and I2C interface circuit reference design ................................................................... 43
Figure 21 Network indication reference design drawing ....................................................................... 44
Figure 22 STATUS reference circuit ...................................................................................................... 45
Figure 23 USB_BOOT interface reference circuit ................................................................................. 46
Figure 23 Microphone interface reference circuit .................................................................................. 47
Figure 23 Handset interface reference circuit ....................................................................................... 48
Figure 24 RF reference circuit ............................................................................................................... 52
Figure 25 Reference circuit of GNSS antenna ...................................................................................... 53
Figure 26 Top and side dimensional drawing (Unit: mm) ...................................................................... 66
Figure 27 Recommended packaging (Top View) (Unit: mm) ................................................................ 67
Figure 28 Top view of the module.......................................................................................................... 68
Figure 29 Bottom view of the module .................................................................................................... 68
Figure 30 Module effect design ............................................................................................................. 69
Figure 31 Temperature curve of solder reflow ....................................................................................... 71
Figure 32 Pallet packaging .................................................................................................................... 71