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HUAWEI ME909u-521 LTE LGA Module
Application Guide
Contents
Issue 01 (2013-07-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6
7.2.2 Troubleshooting ..................................................................................................................... 50
8 Sleeping and Waking Up Application Scenarios ................................................................. 51
8.1 Hardware Interfaces ....................................................................................................................... 52
8.2 Sequence Diagram......................................................................................................................... 53
8.3 Software Interfaces ........................................................................................................................ 54
8.3.1 Principle ................................................................................................................................. 54
8.3.2 USB and Sleep ...................................................................................................................... 56
8.3.3 UART and Sleep .................................................................................................................... 57
8.3.4 Module Wake-up .................................................................................................................... 57
8.3.5 Host Woken up by Module .................................................................................................... 57
8.4 Application Scenarios: System with USB Connection only ............................................................ 59
8.4.1 Hardware Connection ............................................................................................................ 59
8.4.2 Software Procedure ............................................................................................................... 59
8.4.3 Advantages ............................................................................................................................ 60
8.5 Application Scenarios: System with USB and WAKEUP_OUT ...................................................... 60
8.5.1 Hardware Connection ............................................................................................................ 60
8.5.2 Software Procedure ............................................................................................................... 60
8.5.3 Advantages ............................................................................................................................ 61
8.6 System with Other Connection Methods ........................................................................................ 61
9 Thermal Protection Application Scenarios ............................................................................ 62
9.1 Pre-configuration ............................................................................................................................ 62
9.1.1 Troubleshooting ..................................................................................................................... 62
9.2 Thermal Protection Process ........................................................................................................... 62
10 Module Powering Off and Resetting Application Scenarios ........................................... 64
10.1 Restarting the ME ......................................................................................................................... 64
10.1.1 Reference Process .............................................................................................................. 64
10.1.2 Troubleshooting ................................................................................................................... 64
10.2 Power Off ME ............................................................................................................................... 64
10.2.1 Reference Process .............................................................................................................. 64
10.2.2 Troubleshooting ................................................................................................................... 65
11 Appendix .................................................................................................................................... 66
11.1 Relative Documents ..................................................................................................................... 66
11.2 Acronyms and Abbreviations ........................................................................................................ 66