Stratix V Device Handbook: Volume 2: Transceivers

ID 683779
Date 11/23/2021
Document Table of Contents 64B/66B Encoder

Note: The 64B/66B encoder is used only in 10GBASE-R configurations.

The 64B/66B encoder conforms to the 10GBASE-R protocol specification as described in IEEE 802.3-2008 clause-49.

This block contains the 64B/66B encoder sub-block and the transmitter state machine sub-block. The 64B/66B encoder sub-block receives data from the transmitter FIFO and encodes the 64-bit data and 8-bit control characters to the 66-bit data block required by the 10GBASE-R configuration. The transmit state machine in the 64B/66B encoder sub-block checks the validity of the 64-bit data from the MAC layer and ensures proper block sequencing.