Low Latency 100-Gbps Ethernet IP Core User Guide

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ID 683160
Date 4/15/2021
Public
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3.2.1.7. TX RSFEC

If you turn on Enable RS-FEC for CAUI4 in the LL 100GbE parameter editor, the IP core includes Reed-Solomon forward error correction (FEC) in both the receive and transmit datapaths.
The IP core implements Reed-Solomon FEC per Clause 91 of the IEEE Standard 802.3bj. The Reed-Solomon FEC algorithm includes the following modules:
  • 64B/66B to 256B/257B Transcoding
  • High-Speed Reed-Solomon Encoder

The Enable RS-FEC for CAUI4 parameter is available only in CAUI-4 variations of the IP core.

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