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Related Posts

  • Forum Post: Re: DisplayPort Buffer recommendation

    Aaron LeClaire
    Ken, I am putting the DP118 in my schematic now. I have a question about the semi-static signals. If i am driving HPD_IN with 2.5V logic, then do I set VDD to 2.5V? In other words, is VDD the reference for the input voltage, or is VDD the level at which HPD_OUT will be driven? Do you have a reference...
    on May 13, 2010

  • Forum Post: Re: DisplayPort Buffer recommendation

    Aaron LeClaire
    Hi Ken, The reason that we have a 2.5V HDP is that we are driving it with a FPGA with a maximum IO voltage of 2.5V. Somehing confusing to me: why would you want to level shift the HPD to 5V and not 3.3V. Check out section 3.3 of the version 1.1a of the specification -- the maximum voltage for HPD...
    on May 13, 2010

  • Forum Post: Re: DisplayPort Buffer recommendation

    Aaron LeClaire
    Ken, My RX interface is in fact an external interface, but why would the DP119 not work for that. I could use two in parallel, one for the lower to lanes, and one for the upper two lanes. The part to part skew should not matter, because each lane of DP is off by an entire symbol. I am going to...
    on May 13, 2010

  • Forum Post: IBIS or Spice model for SN75DP120

    Aaron LeClaire
    Hello, I need an IBIS or Spice model for the SN75DP120. My local rep said that there is not an IBIS model for the DP120. Is there any kind of model? Not having a model makes it almost impossible to design in the part. Thanks! Aaron
    on Jun 8, 2010

  • Forum Post: DisplayPort SN75DP118 power

    Aaron LeClaire
    Hello, The SN75DP118 supply voltage is 5V. Does this need to come from a linear, or is a switching supply okay? Thanks! Aaron
    on May 12, 2010

  • Forum Post: Re: DisplayPort Buffer recommendation

    paul montalbo
    (Please visit the site to view this file) Hi Ken, I am currently having issues on signal integrity using DP120. I have captured the signal waveform from input connector of our board and mini-DP connector at the output of DP120. Attached are the images. The waveform at the DP connector is...
    on May 25, 2011

  • Forum Post: Re: DisplayPort Buffer recommendation

    paul montalbo
    As you said 70mm of trace after DP120 is fair enough. I capture the signal at the DP connector pins. I placed the caps near the DP connector. Is that correct or should it be closer to DP120? (Please visit the site to view this file)
    on May 26, 2011

  • Forum Post: DisplayPort Buffer recommendation

    Aaron LeClaire
    Hello, I have a need for both a RX and a TX DisplayPort buffer. I am considering both the SN75DP118 and the SN75DP120. The DisplayPort endpoint will be about 8 inches from the connector, where i intent to put the buffer. I dont see how teh SN75DP120 is useful for any DP transmitter because the...
    on May 12, 2010

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