How to connect JTAG nTRST when using 19-pin trace header

From SEGGER Wiki
Revision as of 14:05, 8 May 2020 by Nino (talk | contribs) (Created page with "The 19-pin JTAG/SWD and Trace connector does not have the JTAG nTRST signal defined as it is not specified by Arm. However if your target device has such a pin it must be pull...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

The 19-pin JTAG/SWD and Trace connector does not have the JTAG nTRST signal defined as it is not specified by Arm. However if your target device has such a pin it must be pulled high, otherwise the debug logic may be reset unintentionally. Our recommendation when using the 19-pin header is to either connect that signal to pin 1 (VTref) of the J-Link/J-Trace or pull it high on the target side without connection to the debug probe.

Retrieved from "https://wiki.segger.com/index.php?title=How_to_connect_JTAG_nTRST_when_using_19-pin_trace_header&oldid=7788"