Huawei ME909u-521 - Default Chapter; Table of Contents

HUAWEI ME909u-521 LTE LGA Module
Hardware Guide
Contents
Issue 05 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5
Contents
1 Introduction.................................................................................................................................... 8
2 Overall Description ...................................................................................................................... 9
2.1 About This Chapter ........................................................................................................................... 9
2.2 Function Overview............................................................................................................................ 9
2.3 Circuit Block Diagram ...................................................................................................................... 11
2.4 Application Block Diagram ............................................................................................................. 12
3 Description of the Application Interfaces .............................................................................. 13
3.1 About This Chapter ......................................................................................................................... 13
3.2 LGA Interface ................................................................................................................................. 13
3.3 Power Interface .............................................................................................................................. 25
3.3.1 Overview ................................................................................................................................ 25
3.3.2 Power Supply VBAT Interface ............................................................................................... 25
3.3.3 Output Power Supply Interface ............................................................................................. 26
3.4 Signal Control Interface .................................................................................................................. 27
3.4.1 Overview ................................................................................................................................ 27
3.4.2 Power-on/off (POWER_ON_OFF) Pin .................................................................................. 28
3.4.3 RESIN_N Pin ......................................................................................................................... 29
3.4.4 WAKEUP_IN Signal............................................................................................................... 31
3.4.5 WAKEUP_OUT Signal ........................................................................................................... 31
3.4.6 SLEEP_STATUS Signal ........................................................................................................ 32
3.4.7 LED_MODE Signal ................................................................................................................ 33
3.5 UART Interface ............................................................................................................................... 34
3.5.1 Overview ................................................................................................................................ 34
3.5.2 Circuit Recommended for the UART Interface ...................................................................... 35
3.6 USB Interface ................................................................................................................................. 35
3.7 USIM Card Interface ...................................................................................................................... 37
3.7.1 Overview ................................................................................................................................ 37
3.7.2 Circuit Recommended for the USIM Card Interface .............................................................. 38
3.8 Audio Interface ............................................................................................................................... 39
3.9 General Purpose I/O Interface ....................................................................................................... 40
3.10 JTAG Interface ............................................................................................................................. 41
3.11 RF Antenna Interface.................................................................................................................... 42