Device Family: Arria® II

Device Family: Arria® II GX

Type: Answers

Type: Errata

Area: Intellectual Property

Incorrect Transceiver Receive Clock for 1000BASE-X/SGMII PCS in 1000BASE-X Mode


This errata affects the Triple-Speed Ethernet MegaCore function.

The phase compensation FIFO read clock in the transceiver is not driven by the same clock that drives the 1000BASE-X PCS receiver logic. This causes incorrect timing analysis and receive data error.

This issue affects variants of MAC function with 1000BASE-X PCS function and embedded PMA.


This issue has no workaround.This issue is fixed in version 12.0 of the Triple-Speed Ethernet MegaCore function.