Article ID: 000092238 Content Type: Troubleshooting Last Reviewed: 10/13/2022

Why is the Restricted Fmax of *_vco_clk and *_vco_clk_1 of External Memory Interfaces Intel® Arria® 10 FPGA IP much lower than Fmax in the Fmax Summary report?

Environment

  • Intel® Quartus® Prime Pro Edition
  • External Memory Interfaces Intel® Arria® 10 FPGA IP
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    Description

    Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.2 and earlier, you might find that the Restricted Fmax of *_vco_clk and *_vco_clk_1 of the External Memory Interfaces Intel® Arria® 10 FPGA IP is much lower than the Fmax in the Fmax Summary report.

    Resolution

    You can safely ignore the Restricted Fmax for the target External Memory Interfaces Intel® Arria® 10 FPGA IP clocks.

    This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition Software version 22.3.

    Related Products

    This article applies to 1 products

    Intel® Arria® 10 FPGAs and SoC FPGAs

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