L- and H-Tile Transceiver PHY User Guide

ID 683621
Date 1/30/2024
Document Table of Contents 40GBASE-R with KR FEC Variant

The Native PHY IP core includes a configuration rule for the 40GBASE-R with KR FEC variant. 40GBASE-R is a four-channel protocol which uses four transceivers running at a 10.3125-Gbps datarate. Ethernet packets are stripped into four lanes and aligned at the receiving channels.
Figure 131.  Transceiver Channel Datapath and Clocking for 40GBASE-R with KR FEC (PCS-PMA interface width = 64 bits)