Huawei ME99 Series Mini PCIe Module ME909 用户手册
HUAWEI ME909 Series Mini PCIe Module
Hardware Guide
Hardware Guide
Description of the Application Interfaces
Issue 0.1 (2013-06-09)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
15
3.4 Power Supply Time Sequence
Power on sequence
Do not toggle RESIN_N pin during the power on sequence. Pulling RESIN_N pin low
will extend time for module startup.
will extend time for module startup.
Figure 3-2 Power on timing sequence
Parameter
Remarks
Time (Nominal value)
Unit
T
PD+
Power Valid to USB
D+ high
D+ high
14 s
Power off Sequence
Cutting off 3.3 V will power off the module.
Figure 3-3 Power off timing sequence