MeiG
Product
Manual
of
SLM750
Module
SLM750
Module
Hardware
Design
Page 4, total 84 pages
Contents
1 Introduction ............................................................................................................................................................ 8
1.1 Safety Information ....................................................................................................................................... 9
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 .......................................................................................................................................11
2.3 Functional diagram .................................................................................................................................... 14
2.4 Evaluation Board ....................................................................................................................................... 15
3 Application Interface ............................................................................................................................................ 16
3.1 General Description ................................................................................................................................... 16
3.2 LCC Card Interface Definition .................................................................................................................. 17
3.3 Pin Description .......................................................................................................................................... 17
3.4 Operating Mode ......................................................................................................................................... 28
3.5 Power Saving ............................................................................................................................................. 30
3.5.1 Sleep Mode ..................................................................................................................................... 30
3.5.1.1 USB Application (with USB remote waking-up function) .................................................. 30
3.5.1.2 USB Application (without USB Suspend function) ............................................................. 31
3.5.1.3 Hardware I/O control sleep mode ........................................................................................ 31
3.5.2 Flight Mode .................................................................................................................................... 32
3.5.2.1 Hardware I/O interface controls flight mode ....................................................................... 32
3.5.2.2 AT command controls flight mode ....................................................................................... 32
3.6 Power Supply ............................................................................................................................................. 32
3.6.1 Power supply pins ........................................................................................................................... 32
3.6.2 Decrease voltage drop ..................................................................................................................... 33
3.6.3 Reference design for power supply ................................................................................................ 34
3.6.4 VDD_EXT voltage output .............................................................................................................. 35
3.7 Turn On and Off ......................................................................................................................................... 35
3.7.1 Turn on module using the PWRKEY.............................................................................................. 35
3.7.2 Turn off module using the PWRKEY pin ....................................................................................... 37
3.7.2.1 PWRKEY pin shutdown ...................................................................................................... 37
3.7.2.2 AT command shutdown ........................................................................................................ 38
3.8 Reset the Module ....................................................................................................................................... 38
3.8.1 Hardware reset ................................................................................................................................ 39
3.8.2 AT command reset .......................................................................................................................... 40
3.9 USIM/SIM Card Interface ......................................................................................................................... 40
3.10 USB Interface .......................................................................................................................................... 42
3.10.1 USB pin description ...................................................................................................................... 43
3.10.2 USB reference circuit .................................................................................................................... 43
3.10.3 USB driver .................................................................................................................................... 44
3.11 UART Interface ........................................................................................................................................ 44
3.12 PCM and I2C Interface ............................................................................................................................ 46
