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ARM JTAG 20 pinouts

The table shows the ARM JTAG 20 pinouts as used on the target board.

Table 2-6 ARM JTAG 20 interface pinout table

Pin Signal name I/O diagram Voltage domain
1 VTREF F A
2 NC NA NA
3 nTRST D A
4 GND H NA
5 TDI B A
6 GND H NA
7 TMS/SWDIO B/C A
8 GND H NA
9 TCK/SWCLK B A
10 GND H NA
11 RTCK A A
12 GND H NA
13 TDO/SWO A A
14 GND H NA
15 nSRST E A
16 GND H NA
17 DBGRQ B A
18 GND H NA
19 DBGACK A A
20 GND H NA
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