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1149.6 for TMS320DM8168?

Jan Heiber
Prodigy 95 points

Other Parts Discussed in Thread: TMS320DM8168

Hello everyone, I am trying to use 1149.6 functionality (sometimes also mentioned as "dot6" or "AC EXTEST") for testing a PCB equipped with this TMS320DM8168 processor. The BSDL file states a few 1149.6 commands and capability but not enough to be used in todays JTAG/Boundary Scan test equipment. The data sheet does not say anything about 1149.6 at all.

Q: Is there 1149.6 built in? If yes, is it usable or maybe buggy? If not, why the BSDL files still contain EXTEST_PULSE and EXTEST_TRAIN instructions?

Maybe anyone can help me to clarify the situation.

Many thanks in advance

Jan

  • 0
    TI__Guru**** 170625 points
    Jan,

    DM816x device does not support IEEE1149.6, so we don’t have AC cell in our BSDL files. You can remove extest_pulse(100100) and extest_train(100101) from the BSDL file if that is causing confusion but it is ok to have it in there for reference.

    Usually, if there is 1149.6 support, there is another BSDL file specifically for 1149.6 support, so as not to confuse the 1149.1 users with 1149.6 stuff. The BSDL file already mentions these limiting factors:

    use STD_1149_1_2001.all;

    attribute COMPONENT_CONFORMANCE of DM816x : entity is
    "STD_1149_1_2001";

    BR
    Pavel