Forum Discussion

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

Why NOT Arria 10 recommand OCT for Differential SSTL-18?

Hi

In Arria 10 datasheet, Altera recommend internal OCT for differential SSTL-15 & differential SSTL-12 but differential SSTL-18? It looks like LVDS bank supports the serial resistor on output and termination resistors on input.

4 Replies

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

    Hi,


    Thank you for reaching out Intel FPGA Community.


    From what I understand, for Differential SSTL-18 Class I and II, there is mentioned that it is recommended to use Differential SSTL I/O Standard Termination as the external termination scheme.


    Regards.





    • Adams_Hu's avatar
      Adams_Hu
      Icon for New Contributor rankNew Contributor
      2 years ago

      Hi

      You mean I can also turn on OCT to compliant with Differential SSTL-18 Class I & II instead of external termination scheme?

      Best Regards

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

    Hi,


    May I know the configuration used such as I/O Standard and the OCT values? The information helps us to advice further.


    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 question/reply/answer that we have provided, please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.