Article ID: 000077435 Content Type: Troubleshooting Last Reviewed: 04/24/2023

Is the transceiver Standard PCS 8B/10B decoder compliant to the Fibre Channel specification in Altera® Arria® V, Cyclone® V GX, and Stratix® V devices?

Environment

  • Intel® Quartus® Prime Pro Edition
  • Arria® V Transceiver Native PHY Intel® FPGA IP
    • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    No, the transceiver Standard PCS 8B/10B decoder is not fully compliant to the Fibre Channel specification in Altera® Arria V, Cyclone® V GX, and Stratix® V devices. 

    The Fibre Channel protocol requirements for "Detection of Invalid transmission Word" for certain data rates state that Ordered Sets received with incorrect beginning running disparity be flagged as an error. The Altera® Arria V, Cyclone® V GX, and Stratix® V devices device 8B/10B decoder determines running disparity on a character-by-character basis and not Ordered Sets. 

    Due to this non-compliance, you may or may not be able to use the transceiver Standard PCS 8B/10B decoder.

    Resolution

    To work around this problem you can implement Fibre Channel compliant 8B/10B decoding in the FPGA core.

    Related Products

    This article applies to 6 products

    Stratix® V FPGAs
    Arria® V FPGAs and SoC FPGAs
    Cyclone® V GX FPGA
    Cyclone® V GT FPGA
    Cyclone® V SX SoC FPGA
    Cyclone® V ST SoC FPGA

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