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AKorn9's avatar
AKorn9
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6 years ago

DDR4 I/O standard 1.2-V POD

Greetings!

I try to use PhyLite and my own memory controller. So I try to use "1.2-V POD" I/O Standard. But in the Quartus report I can see "Ignored Value" in the "Ignored Assignments" section to my group_0_data_io[*].

The bank voltage is 1.2 V. I/O standard in the QSys is "1.2-V POD" too.

What do I wrong?

4 Replies

  • NurAida_A_Intel's avatar
    NurAida_A_Intel
    Icon for Frequent Contributor rankFrequent Contributor
    6 years ago

    Hi AKorn9,

    Can you provide the full error messages that generated from Quartus and from which stage you seen the error?

    Thanks

    Regards,

    NAli1

    • AKorn9's avatar
      AKorn9
      Icon for New Contributor rankNew Contributor
      6 years ago

      Hi NAli1_Intel! Thank you for answer!

      In fact it is not an error message. I can see it after fitter process finished.

      And I can not read data from DDR4. I am using Arria 10 device kit and HiLo daughter card. Unfortunately it is very complicated to connect an oscilloscope to the daughter card and I do not know how memory chip answer to the commands.

      To the qsf I added the next strings:

      set_instance_assignment -name IO_STANDARD "1.2-V POD" -to DQ[0]

      set_instance_assignment -name VREF_MODE VCCIO_70 -to DQ[0]

      ...and so on.

      But it seems the PhyLite does not work as I expect.

      • AKorn9's avatar
        AKorn9
        Icon for New Contributor rankNew Contributor
        6 years ago

        I changed 'IO settings' in the 'General' tab in the Qsys from '1.2-V POD' to 'None'. This warning is gone. PHYLite with DDR4 works perfectly.

  • NurAida_A_Intel's avatar
    NurAida_A_Intel
    Icon for Frequent Contributor rankFrequent Contributor
    6 years ago

    Dear Akorn9,

    I apologize for the delay in response as I were out of office due to holiday. Glad to know that your design is working perfectly now. And thanks for sharing the workaround. Really appreciate it 😊

    Feel free to post any update in Intel Forum if you encounter any issue in future.

    Thanks and have a nice day !

    Regards,

    NAli1