User's Manual
L710HG EVB User Manual 
Copyright© Shanghai Mobiletek Communication Ltd    3 
Contents 
1 ABOUT THIS DOCUMENT .......................................................................... 5 
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 ........................................................................................................................... 11 
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 SIM Card Interface ........................................................................................................................ 14 
5.6 Headset Interface ............................................................................................................................ 14 
5.7 Antenna interface............................................................................................................................ 15 
5.8 Audio interface(TBD) ................................................................................................................ 15 
5.9 LED indicating lamp ...................................................................................................................... 17 
5.10 The others ...................................................................................................................................... 18 










