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TMDS181: question of Power-Up Timing for TMDS181 on the specification

WU YISYUAN
Expert 2165 points
Part Number: TMDS181

hi,

    I have some question on TMDS181 specification:

    Why do VCC and VDD have two representations?

Which timing represents VCC? Which timing represents VDD?

  

thanks.

  • 0
    TI__Guru**** 177486 points
    YISYUAN

    It means you can power up VCC first, and then VDD. Or power up VDD first, and then VCC.

    If you power up VDD first, and then VCC, then there is the Td1 timing requirement.

    If you power up VCC first, and then VDD, then there is no timing requirement between VCC and VDD.

    Thanks
    David