Due to a problem with Intel® Quartus® Prime version 16.0 and above, the Intel® Arria® 10 Low Latency Ethernet 10G MAC's dynamically generated multi-rate example design has additional +/-3.2ns of error in 1588's accuracy. As a result, the total error may be larger than the user guide's claim, which is +/-3ns.
The following are the affected multi-rate example design variants:
1. 1G/10G Ethernet with 1588 Example Design (Intel Arria 10)
2. 10M/100M/1G/10G Ethernet with 1588 Example Design (Intel Arria 10)