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TMS570LS1224: TMS570LS - reset upon nERROR

Varban Metodiev
Intellectual 690 points
Part Number: TMS570LS1224

Hi,

I need to implement an MCU reset (warm/cold) upon an ESM error.

In this regard, could anyone please advise:

1. If there is some recommended schematic (or least voltage monitor part numbers) that could be used accordingly - maybe in a loop-back from the nERROR pin to the nRST and nPORRST?

2. Or could it be done internally - as part of an ISR, or even via some lower level "multiplexer" circuitry inside the Hercules?

Thanks,
Varban

  • +1
    TI__Guru 69891 points

    Hi Varban,

    The nERROR signal is provided for connection to an external monitor which can trigger a reset or disable the device altogether by asserting nPORRST or nRST. TI offers a companion ship (TPS6538x) specifically designed to take advantage of the 570's architecture and enable many of these recommended features, but there is no requirement that this chip be used.

    The TPS6538x monitors the power rails continuously and asserts the nRES signal which can be connected to TMS570 nPORRST.

    The ERROR/WDI pin in TPS6538x can be configured as an input for TMS570 ESM nERROR signal monitor.

    --
    Thanks & regards,
    Jagadish.

  • 0 in reply to jagadish gundavarapu
    Intellectual 690 points

    Thank you for your informative response, Jagadish!