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CCOLL.2
Associate II
September 21, 2022
Solved

Using SPC582B chip with only 64 pins, will it be possible to use JTAG to send traces ?

  • September 21, 2022
  • 2 replies
  • 1348 views

Using SPC582B chip with only 64 pins, the nexus interface pins will not be available.

Does this mean that there are no trace possibilities ?

    This topic has been closed for replies.
    Best answer by Erwan YVIN

    hello ,

    JTAG port is well present for classical debug.

    we are using PLS UDE.

    0693W00000Sw53rQAB.png"All NXMC input functionality is controlled through the JTAG port in compliance with IEEE

    1149.1 (refer to Section 63.5.1: IEEE 1149.1 (JTAG) Test Access Port for details). A

    separate JTAG TAP controller is instantiated within the NXMC. Table 956 describes the

    JTAG pins."

    Best Regards

    Erwan

    2 replies

    Erwan YVIN
    Erwan YVINBest answer
    ST Employee
    September 23, 2022

    hello ,

    JTAG port is well present for classical debug.

    we are using PLS UDE.

    0693W00000Sw53rQAB.png"All NXMC input functionality is controlled through the JTAG port in compliance with IEEE

    1149.1 (refer to Section 63.5.1: IEEE 1149.1 (JTAG) Test Access Port for details). A

    separate JTAG TAP controller is instantiated within the NXMC. Table 956 describes the

    JTAG pins."

    Best Regards

    Erwan

    CCOLL.2
    CCOLL.2Author
    Associate II
    September 23, 2022

    Hi Erwan,

    Thanks for your answer.

    In fact, I'm not aware of the JTAG feature. So, to precise my question, as we do not have Nexus pins available, will it be possible to have traces and to do code coverage and profiling with only JTAG pins?

    Rgds,

    Christophe

    CCOLL.2
    CCOLL.2Author
    Associate II
    September 29, 2022

    Hi,

    To complete my question, on 64 pins chip, I agree that we have access to JTAG pins but we don't have access to the Nexus auxiliary port pins.

    I understand that there is the SPU HW bloc which goal is to give an interface between JTAG pins and some Nexus HW blocs inside the chip. But we cannot use all the debug features.

    So, if I use the 64 pins chip and a probe like PLS UAD2Pro, can I use Nexus traces in order to do SW code coverage and code profiling ?