MEIG SLM770A - Table of Contents; Contents

SLM770A Module Hardware Design Manual
MeiG Smart Technology Co., Ltd 77/77
Contents
Important Notice ....................................................................................................................................... 2
Revision History ....................................................................................................................................... 3
Contents .................................................................................................................................................... 4
Table Index ................................................................................................................................................ 6
Figure Index .............................................................................................................................................. 7
1 Introduction ....................................................................................................................................... 8
1.1 Safety Information .................................................................................................................... 9
1.2 Purpose .................................................................................................................................. 10
1.3 Content List ............................................................................................................................. 10
2 Product Overview ........................................................................................................................... 11
2.1 Basic Description ..................................................................................................................... 11
2.2 Main Performance .................................................................................................................. 13
2.3 Functional diagram ....................................................................................... 错误!未定义书签。
3 Application Interface ...................................................................................................................... 16
3.1 Basic Description .................................................................................................................... 16
3.2 LCC Card Interface Definition ................................................................................................ 17
3.3 Pin Description........................................................................................................................ 17
3.4 Module Operating Mode ......................................................................................................... 24
3.5 Power Saving.......................................................................................................................... 26
3.5.1 Sleep Mode .................................................................................................................. 26
3.5.2 Flight Mode ................................................................................................................... 26
3.6 Power Supply Design ............................................................................................................. 27
3.6.1 Power Supply Pins ....................................................................................................... 27
3.6.2 Decrease Voltage Drop ................................................................................................ 27
3.6.3 Reference Design for Power Supply ............................................................................ 30
3.6.4 VDD_EXT Voltage Output ............................................................................................ 30
3.7 Turn On and Off ...................................................................................................................... 31
3.7.1 Turn on module using the PWRKEY ............................................................................ 31
3.7.2 Turn Off......................................................................................................................... 32
3.8 Reset the Module ................................................................................................................... 34
3.8.1 Hardware reset ............................................................................................................. 34
3.8.2 AT Command Reset ..................................................................................................... 35
3.9 USIM/SIM Interface ................................................................................................................ 36
3.10 USB Interface ......................................................................................................................... 37
3.10.1 USB Pin Description ................................................................................................... 38
3.10.2 USB Reference Circuit ............................................................................................... 38
3.10.3 USB Driver ................................................................................................................. 39
3.11 Serial Port ............................................................................................................................... 40
3.12 PCM (SLM770A-SC does not support this function) ............................................................. 41
3.13 Network Status Indication ...................................................................................................... 43
3.14 STATUS .................................................................................................................................. 44