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1. About the 25G Ethernet Intel FPGA IP
2. Getting Started
3. 25G Ethernet Intel FPGA IP Parameters
4. Functional Description
5. Reset
6. Interfaces and Signal Descriptions
7. Control, Status, and Statistics Register Descriptions
8. Debugging the Link
9. 25G Ethernet Intel® Stratix® 10 FPGA IP User Guide Archives
10. Document Revision History for the 25G Ethernet Intel® Stratix® 10 FPGA IP User Guide
6.1. TX MAC Interface to User Logic
6.2. RX MAC Interface to User Logic
6.3. Transceivers
6.4. Transceiver Reconfiguration Signals
6.5. Avalon® Memory-Mapped Management Interface
6.6. PHY Interface Signals
6.7. 1588 PTP Interface Signals
6.8. Miscellaneous Status and Debug Signals
6.9. Reset Signals
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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