Article ID: 000099592 Content Type: Troubleshooting Last Reviewed: 08/21/2024

Why does the F-tile Ethernet FPGA Hard IP variant transmit XOFF frames at a rate roughly 20% lower than the expected XOFF transmission rate when enabling the Hold-off functionality?

Environment

  • Intel® Quartus® Prime Pro Edition
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    Description

    Due to a problem in the Quartus® Prime Pro Edition Software version 24.1, the F-Tile Ethernet FPGA Hard IP variant will transmit XOFF frames at a rate that is roughly 20% lower than the expected XOFF transmission rate based on the Hold-off Quanta contained in the “retransmit_xoff_holdoff_quanta” register.

     

     

    Resolution

    To work around this problem, you must account for the 20% deviation in the rate of transmitted XOFF frames when using the “retransmit_xoff_holdoff_quanta” register. 

    This problem is not scheduled to be fixed.
     

    Related Products

    This article applies to 1 products

    Intel Agilex® 7 FPGAs and SoC FPGAs