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DS90UB948-Q1: CRC questions between 941AS and 948

Betty Guo
Expert 7300 points
Part Number: DS90UB948-Q1

Hi team,

do you have documents about CRC descrption can share to customer? datasheet don't show the CRC process.

for 941 and 948, does it add CRC in the Ser 941 input data, and the 948 deserialize the CRC ?

in customer application, the CRC have embedded in video data, they want to know if the 948 can deserilize the video CRC error? if yes, how to destinguish the video CRC and 941 CRC?

Thanks.

  • 0
    TI__Guru** 108100 points

    Hello Betty,

    CRC checking is only for the Back channel, that says CRC generator is in the DES and CRC checker is in the SER.
    The back-channel data is checked for CRC errors once the Serializer is locked to the back-channel signal incoming from the Deserializer. CRC errors are counted in registers 0x0A and 0x0B.