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DS90UB913A-Q1: PCLK Input jitter

Kohsuke Hamasaki
Intellectual 1250 points

Part Number: DS90UB913A-Q1

Hi, Team,

Question regarding for PCLK input jitter spec specified in datasheet as 0.3UI(max).

Is this needed to think the same as Ser output jitter like 1 UI = 1 / ( PCLK_Freq. /2 x 28 )?

Or could be using just 1/PCLK=1UI？

Thanks,

Best regards,

Koh

  • 0
    TI__Guru** 103215 points

    Hello Koh,

    For the PCLK input jitter to 913A, the UI is specified as the UI of the serialized data rate; in this case

    12bLF mode: 1UI = 1/(PCLK*28)

    12bHF mode: 1UI = 1/(PCLK*28*(2/3))

    10bHF mode: 1UI = 1/(PCLK*28*(1/2))

    Best Regards,

    Casey