Low Latency 40G Ethernet Intel® FPGA IP Design Example User Guide: Agilex™ 5 FPGAs and SoCs

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ID 813654
Date 1/23/2025
Public
Document Table of Contents
Document Table of Contents x
1. Quick Start Guide 2. Design Example Description 3. Document Revision History for the Low Latency 40G Ethernet Intel® FPGA IP Design Example User Guide
1. Quick Start Guide x
1.1. Generating the Design Example 1.2. Directory Structure 1.3. Simulating the Design Example 1.4. Compiling and Configuring the Design Example in Hardware 1.5. Testing the Design Example in Hardware
1.1. Generating the Design Example x
1.1.1. Design Example Parameters
1.3. Simulating the Design Example x
1.3.1. Simulation Design Example Components
1.4. Compiling and Configuring the Design Example in Hardware x
1.4.1. Compile the Design Example in Hardware 1.4.2. Configure the Clocks in Hardware 1.4.3. Program the FPGA
2. Design Example Description x
2.1. Features 2.2. Hardware and Software Requirements 2.3. Functional Description 2.4. Design Example Registers 2.5. Design Example Interface Signals
2.3. Functional Description x
2.3.1. Design Components
2.4. Design Example Registers x
2.4.1. Hardware Design Example Register Map 2.4.2. Packet Client Registers
1. Quick Start Guide
2. Design Example Description
3. Document Revision History for the Low Latency 40G Ethernet Intel® FPGA IP Design Example User Guide

2.3. Functional Description

The design example consists of various components. The following block diagram shows the design components and the top-level signals of the design example:
Figure 9.  Low Latency 40G Ethernet Intel® FPGA IP Design Example Block Diagram

In the transmit direction, the MAC accepts client frames and inserts inter-packet gap (IPG), preamble, the start of frame delimiter (SFD), padding, and CRC bits before passing them to the PHY. The PHY encodes the MAC frame as required for reliable transmission over the media to the remote end.

In the receive direction, the PHY passes frames to the MAC. The MAC accepts frames from the PHY, performs checks, strips out the CRC, preamble, and SFD, and passes the rest of the frame to the client.


Section Content
Design Components

Level Two Title