Cannot connect JTAG chain with CC1312R1F3 devices

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    • Cannot connect JTAG chain with CC1312R1F3 devices


      I want to connect 2 devices (CC1312R1F3) to flash in sequence.

      Pins are all connected together, except TDI/TDO, which are in chain:
      JTAG/TDI -> TDI, TDO -> TDI -> TDI -> JTAG/TDO

      ICE-Pick can't be identified. How should I proceed?

      Source Code

      1. **************************
      2. WARNING: RESET (pin 15) high, but should be low. Please check target hardware.
      3. **************************
      4. InitTarget: Can not find ICE-Pick (IDCODE mismatch). Expected 0x0B00002F, found: 0x7768205E
      5. ****** Error: InitTarget(): PCode returned with error code -1
      6. Cannot connect to target.
      When connected 1-device at a time, it works properly!

    • Hi,
      Thank you for your inquiry.

      When using JTAG in combination with J-Link, you will have to make sure to provide the Device position in the JTAG scan chain.
      When using the J-Link Commander, IRPre and DRPre can be specified when connecting via J-Link.
      Please refer to:

      It is also possible to configure the scan chain via J-Link Scriptfile:

      Does this answer your question?

      Best regards,
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