General Purpose I/O Interface - Huawei MU709 Series Hardware Manual

HUAWEI MU709 Series HSPA+ LGA Module
Hardware Guide

3.9 General Purpose I/O Interface

The MU709 module provides GPIO pins for customers to use controlling signals which
are worked at 1.8 V CMOS logic levels. Customers can use AT command to control
the state of logic levels of 5 GPIO output signal. See the
HSPA+ Module AT Command Interface
Table 3-12 Signals on the GPIO interface
Pin Pin Name
No.
55 GPIO5/USIM
Switch
113 GPIO3/Jammi
ng-detection
51, GPIO
105,
109
Issue 09 (2017-12-15)
 It is recommended that a TVS be used on the related interface, to prevent electrostatic
discharge and protect IC (Integrated Circuit) components.
The signal level of CODEC must match that of the module.

Pad Description
Type
I/O General Purpose I/O
pins (Default) or USIM
Switch control signal.
I/O General Purpose I/O
pins (Default) or
Jamming-detection.
I/O General Purpose I/O
pins.
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Copyright © Huawei Technologies Co., Ltd.
Description of the Application Interfaces
Specification.
Parameter Min. Typ.
(V) (V)
V 1.35 1.8
OH
V 0 -
OL
V 1.26 1.8
IH
–0.3
V -
IL
V 1.35 1.8
OH
V 0 -
OL
V 1.26 1.8
IH
–0.3
V -
IL
V 1.35 1.8
OH
V 0 -
OL
V 1.26 1.8
IH
–0.3
V -
IL
HUAWEI MU709 Series
Max. Comments
(V)
2.1 The function of
this pin can be
0.45
defined as GPIO
or USIM Switch,
2.1
while the USIM
Switch should
0.63
be enabled by
AT command.
2.1 The function of
this pin can be
defined as GPIO
or
Jamming-detecti
0.45
on, while the
Jamming-detecti
on should be
2.1
enabled by AT
command.
0.63
2.1 The function of
these pins has
0.45
not been
defined.
2.1
0.63
40