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TMS320F28234: Questions of Possible Incorrect Operation of XINTF Module After Power Up

Luke Chen
Expert 5090 points
Part Number: TMS320F28234

Hi champs,

In errata, we provide a workaround and solve the problem of Possible Incorrect Operation of XINTF Module After Power Up. My customer wants to know more about this, what's the reason the XINTF module may not get reset properly upon power up and how can we sure that a watchdog reset solve this problem?

My customer needs more information to convince his end customer, please advise your comments, thanks for help.

Regards,

-Luke

  • 0
    TI__Guru 50531 points

    Luke,

    Due to US holiday, Tommy is out of office this week. Please expect response by Dec 1st. Sincere apology for inconvenience.

  • 0
    TI__Guru 62975 points

    Luke,

    Nothing has changed since you asked this question in September: https://e2e.ti.com/support/microcontrollers/c2000/f/171/p/945127/3503696#3503696

    -Tommy

  • 0 in reply to tlee
    TI__Expert 5090 points

    Tommy,

    I know that. I created this new thread because my client's end customer needs more information of this workaround.

    Customers are wondering since device reset(XRS) is the highest level chip reset signal, why do we need a extra watchdog reset to complete device reset so that XINTF gets correct operation? My clients know the workaround well and they need more information(comments) to convince their end customer, this request is from quality team, not engineering department.

    Do you have more comments to convince customers please?

    -Luke

  • 0 in reply to Luke Chen
    TI__Guru 62975 points

    Luke Chen said:
    Customers are wondering since device reset(XRS) is the highest level chip reset signal, why do we need a extra watchdog reset to complete device reset so that XINTF gets correct operation? My clients know the workaround well and they need more information(comments) to convince their end customer, this request is from quality team, not engineering department.

    Ok, narrowing down the query to this specific question with context information helps.

    There are two reset domains in the device:

    1. POR "Cold" reset, and
    2. Warm reset

    The XINTF is only reset by the Warm reset.