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Original question:

TMS320F28335: Memory: Possible Incorrect Operation of XINTF Module After Power Up

TMS320F28335: XRS Pin goes low Unexpectedly

Steven MacDonald1
Prodigy 210 points

Part Number: TMS320F28335
Other Parts Discussed in Thread: TPS3828

Hello All,

I am working on a design and have a problem with the cpu hanging at power up.

The internal watchdog is disabled but the xrs pin goes low after the TPS3828 has released the pin.

This doesn't happen every time by the way, some power ups work as expected but only when this brief low does not occur.

  • 0
    TI__Guru* 86150 points

    Steven,

    Can you clarify when you mention the watchdog being disabled, do you mean the watchdog on the TPS device or the internal watchdog inside the C2000?  Does the C2000 device behave normally after the 2nd XRSn is de-asserted?

    Best,

    Matthew