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ADS1261: CRC Error bit

Brian Wang0928
Genius 14180 points
Part Number: ADS1261

Customer using ADS1261 for toque sensor in power tools application. however, there is

CRCERR bit could become "1" occasionally. Is this behavior for error bits or data communication error? 
If CRCERROR bit is "1", how to deal with it? Should we clear the CRCERROR bit, and ignore the data?
What's the error able to cause the CRCERROR "1"?

Regards
Brian
  • 0
    TI__Guru 52896 points

    Hi Brian Wang0928,

    Have you read the CRC section in the ADS1261 datasheet (9.5.4)? Several of your questions can be answered there.

    You should also review the STATUS register in section 9.6.2. This section provides a bit more info about the CRC error bit

    Regarding what you should do when you receive this error: that is really up to you. A CRC error indicates that there is a mismatch between the data the ADC sent and the data that you received (assuming you performed the CRC calculation correctly of course). It is up to you to decide what to do with that information: should you ignore that data and proceed with data collection? Should you stop taking data and try to identify the issue? That is really up to you

    -Bryan