J-Link / J-Trace JTAG pinout
VTref
1
nTRST
3
TDI
5
TMS
7
TCK
9
RTCK
11
TDO
13
RESET
15
DBGRQ
17
5V-Supply
19
NC
2
GND
4
GND
6
GND
8
GND
10
GND
12
GND*
14
GND*
16
GND*
18
GND*
20