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

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ID 750198
Date 11/29/2023
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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

7.4. Transceiver Reconfiguration Signals

You access the Transceiver and Ethernet control and status registers of the Hard IP using the Transceiver and Ethernet reconfiguration interface respectively. Both interfaces are Avalon® memory-mapped interface.

The Avalon® memory-mapped interface implements a standard memory-mapped protocol. You can connect an Avalon® master to this bus to access the registers of the embedded Transceiver PHY IP core.

Table 15.  Transceiver Reconfiguration Interface Ports of the F-Tile Ethernet Hard IPAll interface signals are clocked by the reconfig_clk clock.
Port Name Direction Description
reconfig_clk Input Avalon® clock. The clock frequency is 100 MHz. All transceiver reconfiguration interface signals are synchronous to reconfig_clk .
reconfig_reset Input Resets the Avalon® memory-mapped interface and all the registers to which it provides access.
reconfig_write Input Write enable signal. Signal is active high.
reconfig_read Input Read enable signal. Signal is active high.
reconfig_address[17:0] Input

Address bus.
reconfig_writedata[31:0] Input A 32-bit data write bus. reconfig_address specifies the address.
reconfig_readdata[31:0] Output A 32-bit data read bus. Drives read data from the specified address. Signal is valid after reconfig_waitrequest is deasserted.
reconfig_waitrequest Output Indicates the Avalon® memory-mapped interface is busy. Keep the reconfig_write or reconfig_read asserted until reconfig_waitrequest is deasserted.
reconfig_readdatavalid Output Indicates that the reconfig_readdata signal is valid.
Table 16.  Ethernet Reconfiguration Interface Ports of the F-Tile Ethernet Hard IP
Port Name Direction Description
reconfig_eth_address[13:0] Input Address for the Ethernet control status registers.
reconfig_eth_read Input Read request signal for the Ethernet control status registers.
reconfig_eth_write Input Write request signal for the Ethernet control status registers.
reconfig_eth_readdata[31:0] Output Reads data from this port when the reconfig_eth_read signal is asserted.
reconfig_eth_writedata[31:0] Input Writes data to this port when the reconfig_eth_write signal is asserted.
reconfig_eth_waitrequest Output Indicates that the control and status interface is busy and unable to respond to read or write requests.
reconfig_eth_readdatavalid Output Indicates that the reconfig_eth_readdata signal is valid.
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