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DS90UB913A-Q1: DES error

Kuramochi Tadahiko
Guru 28715 points
Part Number: DS90UB913A-Q1
Other Parts Discussed in Thread: DS90UB914A-Q1,

Hi,

My customer is evaluating DS90UB913A-Q1 and DS90UB914A-Q1 on their system, "DES Error" is detected from 913A register.

And the cable length is 1m.

To investigate the cause, what they should do?

I'm requesting to check detect probability and dependency of IC sample and observing waveforms.

Please let me know if there is a register they should read.

Best Regards,

Kuramochi

  • 0
    TI__Genius 12866 points
    DES Error means there's back channel CRC error.
    They could monitor 913A Register 0x0A and 0x0B to see how many errors they are getting in a set amount of period.
    They could also run BIST from 914A and check 0x2A to see if there's any CRC error in BIST mode.
    If they have a imager attached to the 913A, they should also try to remove the imager to isolate the problem.


    Best Regards,
    Charley Cai