25G Ethernet Intel® Stratix® 10 FPGA IP User Guide

ID 683154
Date 9/15/2021
Document Table of Contents

4.1.6. 25 GbE RX PCS

The soft RX PCS interfaces to the hard PCS and PMA blocks configured in 66:64 10G PCS Basic Generic Mode with bitslip enabled. The hard PCS drives a 66-bit output stream to the soft RX PCS. The soft RX PCS implements word lock, descrambling, and MII decoding. It drives output data to the MAC. You can read the status of FIFOs at the interface of Hard RX PCS using the Control and Status registers.

Figure 20. High Level Block Diagram of the RX PCS with Optional RS-FEC Datapath

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