HUAWEI MU736 HSPA+ M.2 Module
Hardware Guide
Description of the Application Interfaces
Issue 05 (2014-01-14)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
21
BodySAR detection (BodySAR_N) pin
UIM detection (SIM_DET) pin
Table 3-3 lists the pins on the signal control interface.
Table 3-3
Pins on the signal control interface
Pin
No.
Pin Name
I/O Description
DC Characteristics(V)
Min.
Typ.
Max.
6
Power_On_Off
I
A single control to turn On/Off
WWAN. When It is High, WWAN is
powered on.
H: Power on
L: Power off
It is internally pulled to low.
It is 3.3 V tolerant but can be driven
by either 1.8 V or 3.3 V GPIO.
–0.3
1.8
3.6
67
RESET#
I
System reset, active low
–0.3
1.8
3.6
10
LED#
O
It is an open drain, active low signal,
used to allow the M.2 card to provide
status indicators via LED devices that
will be provided by the system.
Open drain and a pull-up
resistor is required on the
host
8
W_DISABLE#
I
WWAN disable function
H: WWAN function is determined by
software AT command. Default
enabled.
L: WWAN function is turned off.
–0.3
3.3
3.6
26
GPS_DISABLE#
I
GPS disable function
H: GPS function is determined by
software AT command. Default
enabled.
L: GPS is turned off.
–0.3
3.3
3.6
23
Wake_On_WWAN#
O
It is open drain, WWAN to wake up
the host, active low.
Open drain and a pull-up
resistor is required on the
host
25
BodySAR_N
I
Hardware pin for BodySAR detection.
H: No TX power backoff (default).
L: TX power backoff.
–0.3
1.8
3.6
66
SIM_DET
I
SIM hot swap detection pin.
Rising edge for insertion; falling edge
for removal.
H: SIM is present.
L: SIM is absent.
–0.3
1.8
2.1