Article ID: 000076094 Content Type: Product Information & Documentation Last Reviewed: 09/12/2012

How do I ensure consistent behavior between Avalon-MM and Avalon-ST PCIE HIP in the Arria V or Cyclone V device families?

Environment

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

    For the Arria® V and Cyclone® V device families, to ensure consistent behavior between the Avalon®-MM and Avalon-ST PCI Express® Hard IP, 2 parameters need to be changed from the Avalon-MM wrapper to match the default values in the Avalon-ST wrapper.

    Resolution

    In the file altpcie_sv_hip_avmm_hwtcl.v, look for the following parameter definitions near the top of the file (around line 148) and make the changes identified:  

       parameter rx_cdc_almost_full_hwtcl   =  6,
       parameter tx_cdc_almost_full_hwtcl   =  6,

    Change to:

       parameter rx_cdc_almost_full_hwtcl   =  12,
       parameter tx_cdc_almost_full_hwtcl   =  12,

    Related Products

    This article applies to 4 products

    Cyclone® V GT FPGA
    Cyclone® V GX FPGA
    Arria® V GX FPGA
    Arria® V GT FPGA