User's Manual
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