HUAWEI MC509 Series CDMA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 02 (2013-05-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
43
3.9 General Purpose I/O Interface
The LGA module provides seven channels GPIO pins for customers to applications of
controlling signal. Customers can use AT command to control the state of logic levels
of eight channels GPIO output signal. See the
HUAWEI MC509 CDMA LGA Module
AT Command Interface Specification
.
Pin No.
Pin
Name
I/O
Description
DC Characteristics (V)
Min.
Typ.
Max.
44, 46, 51, 55, 105,
109, 113,
GPIO
I/O
General I/O pins
–0.3
2.6
2.9
3.10 JTAG Interface
LGA MC509 module provides one JTAG interface (Joint Test Action Group). Set the
pins in the following table as the test pins. And place the test points in the DTE for
debugging.
Pin No. Pin Name
I/O
Description
DC Characteristics (V)
Min. Typ.
Max.
30
JTAG_TMS
I
JTAG Test mode
select
–0.3
2.6
2.9
36
JTAG_TRST_N
I
JTAG reset.
–0.3
2.6
2.9
42
JTAG_TCK
I
JTAG clock input
–0.3
2.6
2.9
72
JTAG_TDO
O
JTAG test data
output
–0.3
2.6
2.9
87
JTAG_TDI
I
JTAG test data
input
–0.3
2.6
2.9
93
JTAG_RTCK
O
JTAG return clock
–0.3
2.6
2.9
14
PS_HOLD
I
Used for JTAG
interfaces
assigning a test
point for it.
-
1.8
-
31
VCC_EXT2
O
2.6V POWER
output
-
2.6
-
100
RESIN_N
I
Reset module
–0.3
1.8
2.1
It is recommended that set the 9 pins related to JTAG interface as test points on the DTE for
tracing and debugging.
