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TMS570 nRST Pin

Brent Shen
Intellectual 335 points

Hi there,

Is the nRST pin of TMS570 used to reset the device without power cycle? If so, this pin is not necessary if the power-on reset is applied and the code running on the device has no bugs, right?

Thanks a lot,

Brent Shen

  • 0
    TI__Mastermind 23000 points

    Hello,

    nRST is used for multiple purposes:

    • It can be monitored to determine the state of the internal reset for digital logic
    • It can be driven to cause an internal reset of digital logic

    nPORRST differs from nRST because it will generate a full reset (including an internal nRST).  Analog (oscillators, flash pumps, etc), debug logic, and certain diagnostics are reset only by the nPORRST.  As such, more time is necessary for an nPORRST than for nRST.

     

    Regards,

    Karl