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TMS320F28386D: XDS110 Debug Probe Adapter Problem

Seth Gundlach
Prodigy 50 points
Part Number: TMS320F28386D


Tool/software:

Hello! 

I am trying to connect to my target (TMS320F28386D) by way of the XDS110 Debug Probe. The target's connector is the 10-pin ARM while the XDS110's connector is the CTI-20. 

Schematically the 10-pin connector is this: 

We had to cut on the adapter (on the CTI-20 connector) pin 15 so the nRESET pin on the debugger was not being triggered. The stub of pin 15 (which connects to JTAG_TRST net on the target's schematic) was then looped with a wire to pin 2 of the CTI-20 to connect to TRSTn on the debugger. 

Why wouldn't this adapter work out of the box for us? 

We also looped, on the board side 10-pin connector, pin 4 to 7. I do not believe this helped though. 

Any help is appreciated thank you!

  • 0
    TI__Mastermind 36526 points

    Hi Seth,

    Seth Gundlach said:
    We had to cut on the adapter (on the CTI-20 connector) pin 15 so the nRESET pin on the debugger was not being triggered. The stub of pin 15 (which connects to JTAG_TRST net on the target's schematic) was then looped with a wire to pin 2 of the CTI-20 to connect to TRSTn on the debugger.

    Are you able to connect after making these modifications? 

    Seth Gundlach said:
    Why wouldn't this adapter work out of the box for us? 

    It looks like the ARM 10-pin header does not include TRST signal.

    Best Regards,

    Ben Collier

  • 0 in reply to Benjamin Collier
    Prodigy 50 points

    Hi Ben, 

    Thanks for the quick response. 

    We were able to connect to the target after our modification to the adapter board. 

    I understand now. The processor (TMS320F28386D) should not use the 10-pin configuration. 

    Thanks!

    Seth