Why is the timestamp accuracy error of the 1G/2.5G/5G/10G Multi-rate Ethernet PHY Stratix® 10 FPGA IP with MGBASE-T Ethernet design higher than the expected value?

Description

Due to a problem in the Quartus® Prime Pro Edition Software Version 22.3, Stratix® 10 PTP designs using the 1G/2.5G/5G/10G Multirate Ethernet PHY FPGA IP MGBASE-T variant may observe high timestamp accuracy error. This problem will impact rates of 2.5Gbps and lower.

Resolution

There is no workaround for this problem. This problem is scheduled to be fixed in a future release of the Quartus® Prime Pro Edition Software.