Article ID: 000083432 Content Type: Troubleshooting Last Reviewed: 11/02/2015

Why doesn't my Quartus II XCVR_RX_LINEAR_EQUALIZER_CONTROL QSF assignment have any effect on the Stratix V GX equalizer in Quartus II software versions 12.1 and 12.1sp1.

Environment

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

    Due to a bug in Quartus® II software versions 12.1 and 12.1sp1, the XCVR_RX_LINEAR_EQUALIZER_CONTROL QSF assignment may not have an effect on the Stratix® V GX equalizer.

    Resolution

    To work around this issue you should write the equalization value through the Avalon® Memory Mapped interface.

    Alternatively you can install the following appropriate patch.

    Quartus II software version 12.1

    Quartus II software version 12.1 SP1 dp6

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

    Related Products

    This article applies to 3 products

    Stratix® V FPGAs
    Stratix® V GX FPGA
    Stratix® V GS FPGA