Output Signal Control Pins - Huawei MU739 Hardware Manual

HUAWEI MU739 HSPA+ LGA Module
Hardware Guide
WAKEUP_IN Signal
The AP controls the sleep and wakeup status of the MU739 module through the
WAKEUP_IN signal.
If there is no external WAKEUP_IN signal, the wireless module keeps in the wakeup
status by default. After receiving the WAKEUP_IN signal, the wireless module
determines whether to enter the sleep mode according to the level status of the
WAKEUP_IN signal.
Table 3-3 shows the definition of the WAKEUP_IN signal.

3.4.3 Output Signal Control Pins

The MU739 module provides two LED controlling signals: LED_STATUS and
LED_MODE.
Different blinking modes of the status LED indicate different network status. Table 3-5
describes the status of the LED_STATUS pin and LED_MODE pin.
Table 3-5 List of the LED_STATUS pin and LED_MODE pin
No.
1
2
3
4
5
6
Issue 01 (2011-08-24)
MU739 doesn't support hardware shut down, can only be powered off by software.
Operating Status
The 3G network is
successfully registered.
The dial-up connection is
set up for accessing 3G
data services.
The software is being
downloaded or upgraded.
The network is being
searched for or no
network is detected.
The 2G network is
successfully registered.
The dial-up connection is
set up for accessing 2G
data services.
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Description of the Application Interfaces
LED_STATUS
The indicator blinks
once each time.
Light on
Light off
Light off
Light off
Light off
LED_MODE
Light off
Light off
The indicator blinks fast.
The indicator blinks
twice each time.
The indicator blinks
once each time.
Light on
26