4.2.11 Trace Connector

ATSAMV71Q21 supports 4-bit parallel trace. SAM V71 Xplained Ultra implements a CoreSight 20 20-pin, 50-mil keyed connector (pin seven is removed).

To use the trace functionality an external debugger with trace support and CoreSight 20 pin out has to be used. Table 4-18 shows the connections on the kit.

Info: Several of the trace signals are shared with Ethernet signals, this means that there is no trace support if Ethernet is used in an application.
Table 4-18. CoreSight 20 Trace Connector
Pin numberSAM V71 pinFunctionShared functionality
1 [VTREF]-VCC_TARGET_P3V3
2 [TMS/SWDIO]PB06SWDIOEDBG SWD
3 [GND]-Ground
4 [TCK/SWCLK]PB07SWCLKEDBG SWD
5 [GND]-Ground
6 [TDO/SWO]PB05TRACESWOMediaLB and EDBG SWD
7 [KEY]--
8 [TDI]--
9 [GND]-Ground
10 [nSRST]NRSTNRSTShield and EDBG
11 [NC]--
12 [RTCK/TRACECLK]PD08TRACECLKEthernet
13 [NC]--
14 [SWO/D0]PD04TRACED0Ethernet
15 [GND]-Ground
16 [ntRST/D1]PD05TRACED1Ethernet
17 [GND]-Ground
18 [DBGRQ/D2]PD06TRACED2Ethernet
19 [GND]-Ground
20 [DBGACK/D3]PD07TRACED3Ethernet