Huawei ME909u-521 manual Hardware Interfaces, Pin name, Direction, Functional Description, Diagram

HUAWEI ME909u-521 LTE LGA Module
Application Guide	Sleeping and Waking Up Application Scenarios

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

Hardware Guide for each product.

Table 8-1Power management related pins

Interface	Pin name	Direction	Functional Description	Diagram
			When a wake-up source arrives, this
			pin output a low-level-voltage pulse
			lasting for 1s during which if other
PCIE	WAKE#	Output	wake-up sources arrive, the module	Figure‎	8-1
			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
LGA	WAKEUP_OUT	Output	wake-up sources arrive, the module	Figure‎	8-2
			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.
LGA	WAKEUP_IN	Input	The module will be woken up if the	Figure‎	8-3
			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.)
			Indicate the state of the module.
			When the pin carries a high-level
LGA	SLEEP_STATUS	Output	voltage, the module is in working	Figure‎	8-4
			mode. When the pin carries a low-
			level voltage, the module is in sleep
			mode.

Note:

The PCIE interface does not support UART.

Issue 01 (2013-07-05)	Huawei Proprietary and Confidential	52
	Copyright © Huawei Technologies Co., Ltd.