Article ID: 000077738 Content Type: Error Messages Last Reviewed: 06/16/2015

Error: Slow slew rate is not compatible with on-chip output termination for the address/command bus. Either turn off output termination (if possible), or use Fast slew rate.

Environment

  • Quartus® II Subscription Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    You may experience the above error when setting the Arria 10 DDR3L IP I/O tab Slew Rate option to Slow on the Address/Command signals. Slow slew rate is only supported when the output termination is turned off, and SSTL-135 does not allow the output termination to be turned off.

    Resolution

    Perform board-level simulations with Fast slew rate to determine the optimal external termination values.

    This issue will be fixed in a future release of the Quartus® II software.

    Related Products

    This article applies to 3 products

    Intel® Arria® 10 GT FPGA
    Intel® Arria® 10 GX FPGA
    Intel® Arria® 10 SX SoC FPGA