How To Use Tag-Connect Cables With The Segger J-Link Debugger

Segger J-LINK Cable Selection & Installation

J-LINK is a USB powered JTAG emulator supporting a large number of CPU cores. This also applies to similar debuggers that support the traditional ARM 20-pin 0.1″ connection.

We offer two solutions for using Tag-Connect Plug-of-Nails(tm) cables with J-LINK debugger:

  1. Full traditional JTAG using our TC2050-ARM2010 adapter TC2050-IDC 10-pin Plug-of-Nails(tm) cables. This is compatible with all ARM processors.
  2. A smaller footprint solution for Cortex processors using the SWD (Serial Wire Debug) JTAG interface ARM20-CTX and the TC2030-IDC cable.

Both solutions are similar in that they use a 20-pin to Tag-Connect adapter. However, the Full Traditional JTAG also allows you to optionally power the target from the debugger and provides access to all of the signals provided by the traditional 20-pin ARM 0.1″ connection whereas the SWD (Serial Wire Debug) solution only supplies access to the signals used by the SWD protocol.

Full Traditional JTAG using TC2050 and TC2050-ARM2010 adapter

The above picture shows the Segger J-LINK(tm) programmer, the TC2050-ARM2010 adapter and our TC2050-IDC legged Plug-of-Nails(tm) cable. The adapter also works with the TC2050-IDC-NL (No Legs) cable.

Connect the TC2050-ARM2010 to the J-LINK and connect the TC2050-IDC cable to the adapter.

Both “legged” and “no-legs” cables come in the standard 8″ cable length.
The TC2050-IDC-NL “no legs” cable will require the TC2050-CLIP if you require a hands-free solution while debugging.