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TMS320F28035: MPY Assembly Instruction cause IC reset

yy S
Prodigy 110 points
Part Number: TMS320F28035

Hi Ti，

When I use the MPY assembly instruction, the IC will reset. It should be the watchdog reset. Why is this, thank you?

  • 0
    TI__Guru* 93915 points

    Hello,

                    What you mentioned should not be happening. How did you determine that it is the MPY instruction that caused the reset? Could you please provide precise answers to the below questions? 

    1. How long has this design been in production? Or is it yet to go into production?
    2. If this design is in production, how many boards have been shipped with this device till date?
    3. In how many boards is this problem seen? What is the DPPM value?
    4. In a board where the problem is seen, is the problem intermittent or permanent?
    5. If the problem is intermittent, how often is it seen?
    6. Is it possible to reproduce the problem easily and consistently?
    7. Is this seen in a device that has been working fine for some time? If so, how long?
    8. Does it make a difference to run the code from Flash as opposed to RAM?
    9. Are the wait-states correctly configured for the flash per our datasheet recommendations?
    10. If the device has a - TRST pin, is there a pull-down of 2.2k or less?
    11. Is the - XRS pin being driven by an open-drain device?
  • 0 in reply to Hareesh Janakiraman
    Prodigy 110 points

    Thanks Harersh,

    I found that it was a problem in my code. There were too many codes in interrupt, which made it no time to clear watchdog.