Article ID: 000077552 Content Type: Error Messages Last Reviewed: 05/24/2023

Warning (15946): DQS_INPUT_FREQUENCY parameter of DQS delay chain should be equal to the INPUT_FREQUENCY parameter of DLL

Environment

  • Quartus® II Subscription Edition
  • DDR2 SDRAM Controller with ALTMEMPHY Intel® FPGA IP
    • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    You might see the above warning when compiling an ALTMEMPHY-based DDR2 Controller in Arria® II GX devices:

    Warning (15946): DQS_INPUT_FREQUENCY parameter of DQS delay chain should be equal to the INPUT_FREQUENCY parameter of DLL

    Resolution

    The warning is the result of number conversion errors inside the Quartus® II software and can be safely ignored.

    Related Products

    This article applies to 21 products

    Arria® II GZ FPGA
    Cyclone® IV GX FPGA
    Cyclone® III FPGAs
    Cyclone® II FPGA
    Stratix® II FPGAs
    Cyclone® IV E FPGA
    Arria® II GX FPGA
    Arria® V GX FPGA
    Cyclone® III LS FPGA
    Arria® V GT FPGA
    Arria® V ST SoC FPGA
    Arria® V SX SoC FPGA
    Stratix® II GX FPGA
    Stratix® III FPGAs
    Stratix® V GT FPGA
    Stratix® IV E FPGA
    Stratix® V GX FPGA
    Stratix® IV GT FPGA
    Stratix® IV GX FPGA
    Stratix® V E FPGA
    Stratix® V GS FPGA

    Need more help?

    Contact support

    Disclaimer

    1

    All postings and use of the content on this site are subject to Intel.com Terms of Use.