HUAWEI MU509-65 HSDPA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 01 (2016-04-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
27
Figure 3-6
Power on timing sequence
Table 3-6
Parameters description
Parameter Comments
Time
(Nominal values)
Unit
T
PON
POWER_ON_OFF turn on time.
0.5 < T
PON
< 1
s
T
PD+
POWER_ON_OFF Valid to USB D+ high 4
s
If the DTE needs to detect the PID/VID of module during the BIOS phase, the
detection time should exceed the T
PD+
time.
Power-Off Time Sequence
Figure 3-7
Power off timing
Table 3-7
Parameters description
Parameter
Comments
Time
(Nominal values)
Unit
T
POFF
POWER_ON_OFF turn off time
0.5 < T
POFF
< 4
s
T
PD+
POWER_ON_OFF Valid to USB D+ high 4.6
s
