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ADS7038: CRC on SPI

Hideaki Nambu
Mastermind 9165 points


Hello,

The part supports CRC.

I would expect the part sends & receives CRC values on SPI, but I could not find any CRC data field in the datasheet timing charts like Fig.{25,31,32]

Could you please advise how to use CRC ?

  • 0
    TI__Mastermind 25020 points

    Hello,

    The CRC is explained on page 16 of the datasheet, although you are right to note that there is no timing diagram showing the CRC.

    The CRC adds 8 more bits to the end of every digital transaction, coming in and coming out. This 8 bit addition is evaluated using the equation provided in the datasheet.

    The device will work the same as explained except with the need of extending each transaction by 8 more bits

    Regards

    Cynthia