HUAWEI MU739 HSPA+ LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 01 (2011-08-24)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
37
3.10 JTAG Interface
LGA MU739 module provides one JTAG interface (Joint Test Action Group). It is
recommended that set the 5 pins related to JTAG interface as test points on the AP for
tracing and debug.
Table 3-13
Signals on the JTAG interface
Pin
No.
Pin Name
I/
O
Description
DC Characteristics (V)
Min Typical Max
2
JTAG_TDO
O JTAG Serial Data Out
-0.3
1.8
2.1
8
JTAG_TRST_N O JTAG Reset/Module enable -0.3
1.8
2.1
10
JTAG_TMS
I
JTAG State machine control
signal
-0.3
1.8
2.1
11
JTAG_TDI
I
JTAG Serial Data Input
-0.3
1.8
2.1
12
JTAG_TCK
I
JTAG clock input
-0.3
1.8
2.1
It is suggested that place the above 5 test points on the AP board for debug.
3.11 RF Antenna Interface
MU739 module provides 2 antenna interfaces for connecting the external antennas.
Table 3-14
Signals on RF Antenna interface
Pin No.
Pin Name
I/O
Description
65
MAIN_ANT
-
Main antenna
72
AUX_ANT
-
Diversity antenna
3.12 Reserved Interface
The module provides 4 reserved pins. All of reserved pins cannot be used by the
customer.
Table 3-15
List of reserved pins
Pin No.
Pin Name
I/O
Description
18, 19, 47, 50
Reserved
-
Reserve
draft2
