User's Manual
Table Of Contents
L720 EVB User Manual
Copyright© Shanghai Mobiletek Communication Ltd 3
1.1 Scope of applications......................................................................................................................... 5
1.2 Writing purpose................................................................................................................................. 5
1.3 Support and reference documentation list...................................................................................... 6
1.4 Abbreviations......................................................................................................................................6
2 ABSTRACT
...............................................................................................................
8
3 POWER SUPPLY
....................................................................................................
9
4 KEY DESCRIPTION
.............................................................................................
10
4.1 Power on/off and RESET key......................................................................................................... 10
4.2 FORCED USB download key......................................................................................................... 10
4.3 WATCHDOG key.............................................................................................................................10
5 APPLICATION INTERFACE
...............................................................................
12
5.1 UART DB9 Interface....................................................................................................................... 12
5.2 USB（AT UART）Interface...........................................................................................................12
5.3 USB（DEBUG UART）Interface..................................................................................................13
5.4 USB 2.0 Interface............................................................................................................................. 13
5.5 SIMCard Interface.......................................................................................................................... 14
5.6 Headset Interface............................................................................................................................. 15
5.7 Antenna interface.............................................................................................................................15
5.8 Audio interface（TBD）.................................................................................................................16
5.9 LED indicating lamp....................................................................................................................... 17
5.10 The others....................................................................................................................................... 18
6 ACCESSORIES AND ASSEMBLY
....................................................................
21
6.1 EVB Assembly.................................................................................................................................. 21
6.2 EVB Accessory................................................................................................................................. 22