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DS90UB954-Q1: BIST turn on

[FAE] Andrew Wang
Genius 10685 points
Part Number: DS90UB954-Q1
Other Parts Discussed in Thread: DS90UB913A-Q1,

Hi Team,

My customer uses 913 - 954 with two camera.

They followed our datasheet trying to enable BIST and failed.

I confirmed they already checked eye diagram through pattern gen from 913.an any expert please help to check their script? If script is good then we will check other things.

Thanks a lot!!

Andrew

run_bist_port0.doc

run_bist_port1.doc

  • 0
    TI__Mastermind 30515 points
    hi Andrew,
    regarding the BIST, you can use it though hardware pin setting or register setting based on page64 in d/s. please be careful of the freq. setting when paired with 913/933.

    The BIST clock frequency is controlled by the BIST_CLOCK_SOURCE field in the BIST_CTL register. This 2-bit
    value will be written to the Serializer register 0x14[2:1]. A value of 00 will select an external clock. A non-zero
    value will enable an internal clock of the frequency defined in the Serializer register 0x14. Note that when the
    DS90UB954-Q1 is paired with DS90UB933-Q1or DS90UB913A-Q1, a setting of 11 may result in a frequency
    that is too slow for the DS90UB954-Q1 to recover. The BIST_CLOCK_SOURCE field is sampled at the start of
    BIST. Changing this value after BIST is enabled will not change operation.

    best regards,
    Steven