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Altera_Forum's avatar
Altera_Forum
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13 years ago

LVDS differential input rails flipped

One of the boards that I have received has differential rails flipped i.e. {p,n} are connected as {n,p}. I am wondering if I can still use the board this way and invert the signal inside the fpga? Is there any downside to doing this?

Thank you.

Best regards,

Sanjay

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    --- Quote Start ---

    One of the boards that I have received has differential rails flipped i.e. {p,n} are connected as {n,p}. I am wondering if I can still use the board this way and invert the signal inside the fpga? Is there any downside to doing this?

    --- Quote End ---

    This is sometimes done to make the PCB routing possible. Inverting the signal inside the FPGA is fine.

    Cheers,

    Dave