Hardware Interfaces - Huawei ME909u-523 Application Manual

HUAWEI ME909u-523 LTE LGA Module
Application Guide

8.1 Hardware Interfaces

The module communicates with the host using mainly USB or UART. For details
about pins related to power management, see Table 8-1 .
For corresponding interface numbers and reference design for the pins, see
ME909u-523 LTE LGA Module Hardware Guide
PCIe Module Hardware
Table 8-1 Power management related pins
Interface Pin name
PCIE WAKE#
LGA WAKEUP_OUT
LGA WAKEUP_IN
Issue 04 (2014-12-08)
NOTE
To set the host to be in the standby state, check the module's GPS service state first. If the
GPS service is enabled, the host should send AT^WPEND to disable the GPS service.
Otherwise, the module cannot enter sleep mode.
Guide.
Direction
Output
Output
Input
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Copyright © Huawei Technologies Co., Ltd.
Sleeping and Waking Up Application Scenarios
or HUAWEI ME909u-523 LTE Mini
Functional Description
When a wake-up source arrives, this
pin output a low-level-voltage pulse
lasting for 1s during which if other
wake-up sources arrive, the module
will ignore the later wake-up requests.
In other words, the module will not
output a second pulse during this 1s.
When a wake-up source arrives, this
pin output a high-level-voltage pulse
lasting for 1s during which if other
wake-up sources arrive, the module
will ignore the later wake-up requests.
In other words, the module will not
output a second pulse during this 1s.
When the pin carries a high-level
voltage, the states of the module are
as follows:
The module will be prohibited to enter
sleep mode if the module is awake.
The module will be woken up if the
module is in sleep mode.
When the pin carries a low-level
voltage, the module is allowed to enter
sleep mode. (By default, the pin is set
to INPUT/PD, which is, the software
detects a low-level voltage on the pin
when the pin is not connected.)
HUAWEI
Diagram
Figure 8-1
Figure 8-2
Figure 8-3
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