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2.5
TI JTAG 14 connector
The Texas Instruments (TI) JTAG 14 connector is a 14-way 2.54mm pitch box header which supports
JTAG debug, Serial Wire Debug, and SWO trace.
To use this connector with DSTREAM-ST, the supplied TI JTAG 14 adapter must be used with the Arm
JTAG 20 debug cable.
TI JTAG 14 pinout table
•
Using a non-shrouded header on the target board can lead to short-circuits or signal contention. To
ensure the correct polarity and position, Arm recommends that you use a fully shrouded box header.
•
For the pin-out of the TI JTAG 14 connector, do not use 14-way IDC cables to connect the target
board and debug unit. To avoid cross-talk issues between nTRST, TMS, and TDI, the DSTREAM-
ST TI JTAG 14 adapter must connect directly to the target board.
101714_0100_02_en
Warning
Copyright © 2019 Arm Limited or its affiliates. All rights reserved.
Figure 2-4 TI JTAG 14 connector pinout
Non-Confidential
2 Target interface connectors
2.5 TI JTAG 14 connector
1
3
5
7
9
11
13
Table 2-6 TI JTAG 14 pinout table
Pin Signal name
Pin Signal name
1
TMS/SWDIO
2
3
TDI
4
5
VTREF
6
7
TDO/SWO
8
9
RTCK
10
11
TCK/SWCLK 12
13
DBGRQ
14
2
4
6
8
10
12
14
nTRST
GND
NC
GND
GND
GND
DBGACK
2-39
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