Forum Discussion

AKorn9's avatar
AKorn9
Icon for New Contributor rankNew Contributor
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...
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.