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panic flag, different errors

Category: Hardware
Product Number: ADAU1452

I am booting ADAU1452 from flash and getting different error codes. But they are staying the same for a prolong time (many boot times).

It was an error 0x0080   DM0 B3 for a long time. Then it disappeared. No errors.

Then it was an error 0x0020   DM0 B1 for a long time.

Now it is 0x0004   PM0 and stays permanently. And the mask works properly - if masked, no error; if the mask is removed, error again.

I saw Dave's message about the false indication of the panic flag and errors. Where is the boundary between when it is a false panic and when we should decide to fix something?

  • Hello Raimonds,

    Are you using SigmaStudio? Which revision? Or, are you using SigmaStudio+? Again. which version?

    What are your voltages being applied to the DSP? DVDD? IOVDD? PVDD?

    Are you powering down between these boot-ups? Or, are you pulling the Reset pin to ground?

    Are you using Soft Reset from a system controller? 

    Are you using I2C or SPI to connect to the Flash?

    What speed?

    Does the program operate OK despite the error codes?

    Thanks,

    Dave T

  • Hello Dave,

    The error is just on one board. 5 other ones are free from the error.

    And answers to your questions:

    Are you using SigmaStudio? Which revision? - version 4.6

    What are your voltages being applied to the DSP? DVDD? IOVDD? PVDD? - 1.2V  3.3V  3.3V

    Are you powering down between these boot-ups? Or, are you pulling the Reset pin to ground? - I have tested all cases. Sometimes there were no errors if powering down between boot-ups.

    Are you using Soft Reset from a system controller? - No

    Are you using I2C or SPI to connect to the Flash? - SPI

    What speed? - default

    Does the program operate OK despite the error codes? - looks like ok, hard to run the test for all operation cases

  • Hello Raimonds,

    Gee, this is a bit of a headscratcher but there must be some sort of flaky circuits in the DSP that handles the data to and from the memory. Since it is fine with five other units we cannot blame any hardware issues or SPI speed issues and most likely not power related issues. 
    I am leaning towards a bad DSP at this point. 
    Dave T

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