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DRV3201-Q1 EEPROM CRC Error

Toshio Ushikubo
Mastermind 9620 points

Hello,

Customer has a device it shows EEPROM CRC Check fail bit is “1”.

Please answer following question from customer.

 

Q1:

Please let me known the detailed method of EEPROM CRC check.

 

Q2:

Please advise if EEPROM data can be read out from SPI port.

Please advise the method if possible.

 

Best Regards.

  • 0
    TI__Guru** 114905 points
    Hi Ushikubo-san,

    Our expert has been notified and should reply soon.
  • 0
    TI__Expert 3555 points
    Ushikubo-san,

    The EEPROM CRC check error indicates that the internal parameters programmed in at the factory were somehow corrupted.

    Q1. When these parameters are programmed at the factory a CRC8 is calculated and that value is programmed into the EEPROM of the device. On each power up this CRC8 value is checked against the parameter values programmed in the EEPROM. If they do not match, the EEPROM error flag is set.

    Q2. No this is not possible.

    To help figure out this issue could you provide the following:

    1. All markings on the top of the failing device (specifically looking or the date code).
    2. Please find out if the device was exposed to any harsh conditions (high voltage, ESD, extreme temperatures, etc.)

    Regards,
    Will Toth
  • 0 in reply to William Toth
    Mastermind 9620 points

    Hello William-san,

    Thank you for your quick reply.

    I reported your answer to customer.

    Customer will check SPI SDO data using scope if DRV3201 really output the “EEPROM data CRC failed=1”.

     

    Best Regards.