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Omerkv's avatar
Omerkv
Icon for New Contributor rankNew Contributor
2 years ago

DC couple connectivity of LVDS protocol between 1.8V to 2.5V

Hi

I would like to consult regarding the following issue:

Can LVDS protocol can work on a DC couple connectivity between two FPGA's where one FPGA the LVDS pins are connected to 1.8V IO standard /voltage level and the other one is connected to 2.5V IO standard /voltage level?

I suspect not, due to the contradiction between the voltage level and only ac couple connectivity can work at this state.

Regards

Omer

Generic Io

4 Replies

  • FvM's avatar
    FvM
    Icon for Super Contributor rankSuper Contributor
    2 years ago
    Wrong assumption, they are fully compatible. LVDS IO standard has 1.2 V common mode voltage independent of supply voltage.
  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    Hi Omer,


    I wish to follow up with you on this question,

    May I know if the answers provided so far helps you to move forward? If no, let us know for the continue of support.


    Regards,

    Aqid


  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    As we do not receive any response from you on the previous reply have been provided, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.


    p/s: If any of the answers from the community or Intel Support are helpful, please feel free to give "Kudos" or rate a 4/5 for the evaluation survey.