F-Tile 25G Ethernet IP User Guide

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ID 750198
Date 8/13/2025
Public
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 IP Parameters 5. Functional Description 6. Reset 7. Interfaces and Signal Descriptions 8. Control, Status, and Statistics Register Descriptions 9. F-Tile 25G Ethernet IP User Guide Archive 10. Document Revision History for the F-Tile 25G Ethernet 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 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 IP Cores x
3.1.1. Altera 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 IP 3.5.3. Placement Settings for the F-Tile 25G Ethernet IP Core
4. F-Tile 25G Ethernet IP Parameters x
4.1. Main Tab Options 4.2. Analog Parameter Tab Options
4.2. Analog Parameter Tab Options x
4.2.1. Analog Parameter Settings
5. Functional Description x
5.1. F-Tile 25G Ethernet IP Core Functional Description 5.2. User Interface to Ethernet Transmission
5.1. F-Tile 25G Ethernet IP Core Functional Description x
5.1.1. F-Tile 25G Ethernet IP TX MAC Datapath 5.1.2. 25 GbE TX PCS 5.1.3. F-Tile 25G Ethernet 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 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 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 IP Parameters
5. Functional Description
6. Reset
7. Interfaces and Signal Descriptions
8. Control, Status, and Statistics Register Descriptions
9. F-Tile 25G Ethernet IP User Guide Archive
10. Document Revision History for the F-Tile 25G Ethernet IP User Guide

2.4. Performance and Resource Utilization

The following table shows the typical device resource utilization for selected configurations using the current version of the Quartus® Prime software. The timing margin for this IP core is a minimum of 15%.

Table 5.  IP Core FPGA Resource Utilization for F-Tile 25G Ethernet IP Core with MAC+PCS+PMA Core Variant for Agilex™ 7 Devices
IP Core Settings

ALMs

Dedicated Logic Registers

Block Memory Bits
RS-FEC disabled 9749 17937 177728
RS-FEC enabled 9846
Table 6.  IP Core Round Trip LatencyThe round trip latency values are based on the following definitions and assumptions:
  • Round trip latency is measured as the time taken for a packet to travel from TX Avalon® streaming interface to the RX Avalon® streaming interface with the IP core in serial loopback mode.
  • Latency values are obtained via simulation of the IP Core's example design generated using Quartus® Prime software v22.3. These values are expected to be different across different builds.
  • Synopsys's VCS simulator is used when measuring the following values. These values may differ across different simulators.

IP Core Settings

Latency (ns)
RS-FEC disabled 255
RS-FEC enabled 685
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