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SN65DP141: Need OpenLDI Re-driver device

Part Number: SN65DP141

I have an OpenLDI link that routes through 4 connectors and over 16" of PCB routing.  Since we recommend no more than 10" for this interface, I need a re-driver device  The SN65DP141 was recommended to me as a candidate.  This seems excessive for a link running under 3Gbps.  Can you recommend an optimal choice for Open LDI?

Tom

Regards,
Tom Johnson
Hardware Applications Engineer
Embedded Processors

  • Hello Tom

    Please, take a look at DP130 and the DP159.

    Regards
    Francisco
  • In reply to Francisco Javier Zamudio:

    Francisco,

    The Open LDI interface is an LVDS interface that has 4 data pairs and a clock pair as a uni-directional interface.  The clock pair operates at a pixel clock rate which is 1/7 of the data bit rate.  The DPxxx parts recommended all only have 4 pairs.  Do you still think these are the best solution or can you recommend a different solution that will support all 5 pairs?

    Tom

    Regards,
    Tom Johnson
    Hardware Applications Engineer
    Embedded Processors

  • In reply to Tom Johnson 16214:

    Hello Tom

    If the application is over LVDS, then I recommend you to take a look at this one www.ti.com/.../products.html.
    Also, take a look at this device www.ti.com/.../ds90ub947-q1.pdf it looks like you will need a solution like on page 1.

    Regards
    Francisco
  • In reply to Francisco Javier Zamudio:

    Francisco,

    We are currently considering the DS25BR440 to perform the re-driver functionality for the 4 data pairs and the DS10BR150 for the clock since we are told that it has the same propagation delay as the BR440.  Can you confirm that this is a reasonable solution for extending the length for an Open LDI interface operating with a pixel clock up to 170MHz and data at up to 1000Mbps per lane?

    We do not want to use a concentrater like the DS90UB947 device.  We want to maintain the signal in the Open LDI format.

    Tom

    Regards,
    Tom Johnson
    Hardware Applications Engineer
    Embedded Processors

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