HUAWEI MU709 Series HSPA+ LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 09 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
41
3.10 JTAG Interface
The MU709 module provides Joint Test Action Group (JTAG) interface. Table 3-13
shows the signals on the JTAG interface. It is recommended that route out the 5 pins
as test points on the DTE for tracing and debugging.
Table 3-13
Signals on the JTAG interface
Pin
No.
Pin Name
Pad
Type
Description
Parameter
Min.(V)
Typ.(V)
Max.(V)
30
JTAG_TMS
I
JTAG test mode select
V
IH
1.26
1.8
2.1
V
IL
–0.3
-
0.63
36
JTAG_TRST_N
I
JTAG reset
V
IH
1.26
1.8
2.1
V
IL
–0.3
-
0.63
42
JTAG_TCK
I
JTAG clock input
V
IH
1.26
1.8
2.1
V
IL
–0.3
-
0.63
72
JTAG_TDO
O
JTAG test data output
V
OH
1.35
1.8
2.1
V
OL
0
-
0.45
87
JTAG_TDI
I
JTAG test data input
V
IH
1.26
1.8
2.1
V
IL
–0.3
-
0.63
3.11 RF Antenna Interface
The MU709 module provides two antenna pads (MAIN_ANT and AUX_ANT) for
connecting the external antennas.
Table 3-14
Definition of the antenna pads
Pin
No.
Pin Name
Pad
Type
Description
Parameter
Min.
(V)
Typ.
(V)
Max.
(V)
107
MAIN_ANT
-
RF MAIN antenna pad
-
-
-
-
115
AUX_ANT
-
RF AUX antenna pad
-
-
-
-
Route the antenna pad as close as possible to antenna connector. In addition, the
impedance of RF signal traces must be 5
0 Ω.
