F-Tile 25G Ethernet Intel® FPGA IP User Guide

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ID 750198
Date 11/29/2023
Public

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Document Table of Contents
Document Table of Contents x
1. About the F-Tile 25G Ethernet Intel FPGA IP User Guide 2. About this IP 3. Getting Started 4. F-Tile 25G Ethernet Intel FPGA IP Parameters 5. Functional Description 6. Reset 7. Interfaces and Signal Descriptions 8. Control, Status, and Statistics Register Descriptions 9. Document Revision History for the F-Tile 25G Ethernet Intel FPGA IP User Guide
2. About this IP x
2.1. Release Information 2.2. Features 2.3. Device Family Support 2.4. Performance and Resource Utilization
3. Getting Started x
3.1. Installing and Licensing Intel® FPGA IP Cores 3.2. Specifying the IP Core Parameters and Options 3.3. Simulating the IP Core 3.4. Generated File Structure 3.5. Integrating Your IP Core in Your Design 3.6. Compiling the Full Design and Programming the FPGA
3.1. Installing and Licensing Intel® FPGA IP Cores x
3.1.1. Intel® FPGA IP Evaluation Mode
3.5. Integrating Your IP Core in Your Design x
3.5.1. Pin Assignments 3.5.2. Adding the F-Tile Reference and System PLL Clocks Intel® FPGA IP 3.5.3. Placement Settings for the F-Tile 25G Ethernet Intel FPGA IP Core
5. Functional Description x
5.1. F-Tile 25G Ethernet Intel FPGA IP Core Functional Description 5.2. User Interface to Ethernet Transmission
5.1. F-Tile 25G Ethernet Intel FPGA IP Core Functional Description x
5.1.1. F-Tile 25G Ethernet Intel FPGA IP TX MAC Datapath 5.1.2. 25 GbE TX PCS 5.1.3. F-Tile 25G Ethernet Intel FPGA IP Core RX MAC Datapath 5.1.4. Link Fault Signaling Interface 5.1.5. 25 GbE RX PCS 5.1.6. Flow Control
5.1.1. F-Tile 25G Ethernet Intel FPGA IP TX MAC Datapath x
5.1.1.1. Frame Padding 5.1.1.2. Preamble Insertion 5.1.1.3. Inter-Packet Gap Generation and Insertion 5.1.1.4. Frame Check Sequence (CRC32) Insertion
5.1.3. F-Tile 25G Ethernet Intel FPGA IP Core RX MAC Datapath x
5.1.3.1. IP Core Preamble Processing 5.1.3.2. IP Core Malformed Packet Handling 5.1.3.3. Length/Type Field Processing
5.1.3.3. Length/Type Field Processing x
5.1.3.3.1. Length Checking 5.1.3.3.2. RX CRC Checking and Dynamic Forwarding
5.1.6. Flow Control x
5.1.6.1. TX Pause/PFC Flow Control Frame Transmission Request 5.1.6.2. XON/XOFF Pause Frames 5.1.6.3. Dynamic Reconfiguration QSF Settings
5.2. User Interface to Ethernet Transmission x
5.2.1. Order of Transmission 5.2.2. Bit Order For TX and RX Datapaths
7. Interfaces and Signal Descriptions x
7.1. TX MAC Interface to User Logic 7.2. RX MAC Interface to User Logic 7.3. Transceivers 7.4. Transceiver Reconfiguration Signals 7.5. Avalon® Memory-Mapped Management Interface 7.6. Dynamic Reconfiguration Interface Signals 7.7. Miscellaneous Status and Debug Signals 7.8. Clock Signals 7.9. Reset Signals
8. Control, Status, and Statistics Register Descriptions x
8.1. TX MAC Registers 8.2. RX MAC Registers 8.3. Pause/PFC Flow Control Registers 8.4. Statistics Registers 8.5. Hard IP Registers
8.4. Statistics Registers x
8.4.1. TX Statistics Registers 8.4.2. RX Statistics Registers
1. About the F-Tile 25G Ethernet Intel FPGA IP User Guide
2. About this IP
3. Getting Started
4. F-Tile 25G Ethernet Intel FPGA IP Parameters
5. Functional Description
6. Reset
7. Interfaces and Signal Descriptions
8. Control, Status, and Statistics Register Descriptions
9. Document Revision History for the F-Tile 25G Ethernet Intel FPGA IP User Guide

7.7. Miscellaneous Status and Debug Signals

The miscellaneous status and debug signals are asynchronous.
Table 19.  Miscellaneous Status and Debug Signals

Signal

Direction

Description

tx_lanes_stable Output Active-high asynchronous status signal for the TX datapath.
  • Asserts when the TX datapath is ready to send data.
  • Deasserts when i_tx_rst_n/i_rst_n signal asserts.
rx_block_lock Output

If you turn off Enable RS-FEC in the parameter editor, this signal is asserted when the IP completes 66-bit block boundary alignment on all PCS lanes.

If you turn on Enable RS-FEC in the parameter editor, this signal is asserted when the IP completes the codeword alignment on all FEC lanes.

rx_pcs_ready Output Active-high asynchronous status signal for the RX datapath.
  • Asserts when the RX datapath is ready to receive data.
  • Deasserts when i_rx_rst_n/i_rst_n signal asserts or during the auto-negotiation and link training operation.
local_fault_status Output Asserted when the RX MAC detects a local fault. This signal is available if you turn on Enable link fault generation in the parameter editor.
remote_fault_status Output Asserted when the RX MAC detects a remote fault. This signal is available if you turn on Enable link fault generation in the parameter editor.
unidirectional_en Output Asserted if the IP core includes Clause 66 for unidirectional support. This signal is available if you turn on Enable link fault generation in the parameter editor.
link_fault_gen_en Output Asserted if the IP core includes Clause 66 for unidirectional support. This signal is available if you turn on Enable link fault generation in the parameter editor.
o_tx_pll_locked Output Indicates that the TX SERDES PLLs are locked.
o_cdr_lock Output Indicates that the recovered clocks are locked to data.
o_rx_hi_ber Output Asserted when the RX PCS is in a HI BER state according to Figure 82-15 in the IEEE 802.3-2015 Standard.
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