Article ID: 000098815 Content Type: Troubleshooting Last Reviewed: 05/16/2025

Why does reading or writing across the FPGA-to-HPS Bridge in the Agilex™ 5 FPGA devices fail?

Environment

    Intel® Quartus® Prime Pro Edition
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Description

The Agilex™ 5 FPGA devices' FPGA-to-HPS Bridge (F2H) hardware currently supports AXI5, ACE-lite, and AXI4. However, some signals are not tied off appropriately, resulting in unsuccessful transactions.

Resolution

To work around this problem, use the Quartus® Prime Pro Edition Software version 24.1 and install the patches below, which will configure the appropriate AXI signals to allow successful transactions across the F2H bridge. 

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