Huawei ME909 Whiteboard Accessories User Manual


 
HUAWEI ME909 Series LTE LGA Module
Development Kit Guide
Interface Functions of the DVK
Issue 01 (2013-02-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10
3 Interface Functions of the DVK
3.1 About This Chapter
This chapter describes interface functions, and interface usage of the DVK.
Interface Functions
3.2 Interface Functions
3.2.1 Power Switch and Power Supply Mode
Power can be supplied to the DVK in two modes: by a 5V AC-DC power adapter or
the USB 5V power supply.
The jumper wire POWER-SWITCH is used to select a power supply mode. When
pin1 and pin2 are connected, the USB 5V power supply is used; when pin2 and pin3
are connected, the 5V AC-DC power adapter is used. Only one mode can be
selected at a same time. Once the development kit is powered on, the power
indicator lights up.
Figure 3-1 Power is supplied by the 5V AC-DC power adapter