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DS90UB941AS-Q1: eye pattern

Ray Tong
Intellectual 1330 points
Part Number: DS90UB941AS-Q1

The display screen is 1920 * 720, 60fps

1920*720*60*1.15*35bit=3.34G

Why does the eye chart display a frequency of 1.698G after stringing? Is the FPD LINK signal DDR?

  • 0
    TI__Mastermind 29465 points

    Hi Ray,

    Based on your PCLK calculations, the FPD rate is 3.34 Gbps which is equivalent to 1.67 Ghz Nyquist frequency. What you are capturing on the scope is the Nyquist frequency.

    If you are trying to get jitter measurement please follow the guide in this link. Thanks. 

    Regards,
    Fadi A.