Article ID: 000094550 Content Type: Troubleshooting Last Reviewed: 06/16/2025

Why are my AXI-Lite register accesses to the PTP packet parser of the Ethernet Subsystem IP failing in 10G Asynchronous Clocking Mode?

Environment

    Intel® Quartus® Prime Pro Edition
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Description

Due to a problem in the Quartus® Prime Pro Edition Software version 23.1, AXI-lite register accesses to the PTP packet parser of the Ethernet Subsystem IP will fail in 10G Asynchronous Clocking Mode if the AXI-ST data path clock is slower than the AXI-Lite clock.

Resolution

To work around this problem, ensure that the AXI-Lite clock is slower than the AXI-ST data path clock. 
This problem is fixed beginning with the Quartus® Prime Pro Edition software version 24.1.

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