CC3220 LaunchPad

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How to connect with J-Link

The TI CC3220 LaunchPad evaluation board does come with an on board debugger (XDS110) which drives the debug signals by default. In order to be able to connect with a J-Link to the CC3220SF device, the jumpers as shown on image below needs to be removed in order to isolate the on board debugger. The J-Link needs to be connected through the 9-pin Cortex-M connector (JTAG_IN).

If powering the board via the top USB connector, leave all four power supply jumpers connected(J21/J20/J19/J17)

If powering the board via an external power supply, remove all four power supply jumpers (J21/J20/J19/J17)

To use the Bord in SWD, SOP (J13) needs to be set to 0 and to use it in JTAG mode, SOP (J13) needs to be set to 1:

  • SOP (J13) configured for JTAG
  • SOP (J13) configured for SWD

Using TI CC3220 LaunchPad with JTAG-/SWD-Isolators

Unfortunately, the board is not able to supply the JTAG- or SWD-Isolator with the necessary power (40 mA peak, 25 mA typ. consumption). Therefore it is required to supply the target side of the Isolator with an additional external 3.3V power source.

NOTE: As soon as the Isolator has enough power, both power LEDs (green) will light up.

C33220SF LaunchPad in combination with SWD Isolator

The J-Link Isolators, J-Link Measurement+Patch Adapter and the J-Link 9-Pin Cortex-M Adapter used in the setup above are available for purchase here: