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MCT8316A: Unable to cure parameters to EEPROM

Cherry Zhou
Mastermind 22235 points
Part Number: MCT8316A

Hi team,

As per the manual,

However, after writing 0x80000000 to the 0xE6 register, the parameters read are still the default parameters after power-up, and the previously modified parameters are not cured to EEPROM. Based on the bit definitions in the 0xE6 register, it is found that the EEPROM_write_access_key 8 bits also need to be written to unlock the write EEPROM instruction. Writing 0x8A500000 also failed.

What value should the EEPROM_write_access_key of the MCT8316A be written? Could you help check this case? Thanks.

Best Regards,

Cherry

  • 0
    TI__Genius 17270 points

    Hi Cherry,

    As you have stated, for step 17 you need to write 0x8A500000, not 0x80000000, into register 0x0000E6 to write to EEPROM.

    After writing to EEPROM but before power cycling, does reading the EEPROM return the modified values or still return the default values?

    Regards,

    Joshua