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ushermark's avatar
ushermark
Icon for New Contributor rankNew Contributor
2 years ago
Solved

2S2Rx8 (3DS) RDIMM EMIF IP calibration

Hello.

I am wonder if it is possible to pass EMIF RAM calibration on Arria 10 FPGA for 2S2Rx8 ECC memory using non-3DS type like 2Rx8 RDIMM ECC. I know that Arria 10 doesn't support 3DS memories, but the only difference seems to be in Chip ID signal (C0...C2). Therefore, can I overcome this restriction or 3DS memories use different calibration algorithms?

Memory sample used for tests: Micron MTA72ASS8G72PSZ-2S6.

Best regards,

Mark

  • AdzimZM_Altera's avatar
    AdzimZM_Altera
    2 years ago

    Hi Mark,


    "Is it possible to implement own hard memory controller in Quartus project? Or it is a part of hardware specification for FPGA?"

    • Yes you can implement your own memory controller as soft memory controller with hard PHY.
    • In the General tab of EMIF IP, there is a configuration option that allow you to choose a Hard PHY and Hard Memory Controller.
    • Somehow it's depends on memory standard as well.


    Regards,

    Adzim


4 Replies

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

    Hi Mark,


    Thank you for your question.


    As you well known that the Arria 10 DDR4 does not support 3DS memory.

    I already check with engineering regarding this matter and they have feedback with below point.

    • This is due to the Arria 10 does not have support for the Chip ID bits required.
    • Plus the hard memory controller does not support 3DS and the Chip ID bits.




    Regards,

    Adzim


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

      Hello Adzim,

      I do have a follow-up question. Is it possible to implement own hard memory controller in Quartus project? Or it is a part of hardware specification for FPGA?

      Best regards,

      Mark

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

    Hi Mark,


    "Is it possible to implement own hard memory controller in Quartus project? Or it is a part of hardware specification for FPGA?"

    • Yes you can implement your own memory controller as soft memory controller with hard PHY.
    • In the General tab of EMIF IP, there is a configuration option that allow you to choose a Hard PHY and Hard Memory Controller.
    • Somehow it's depends on memory standard as well.


    Regards,

    Adzim


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

    I’m glad that your question has been addressed, I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.