H-Tile Hard IP Ethernet Intel® FPGA IP User Guide: Stratix® 10 Devices

ID 683430
Date 4/09/2024
Public
Document Table of Contents

4.2.2. H-Tile Hard IP for Ethernet IP Core RX Datapath

When the RX MAC in the channel is enable, it receives Ethernet frames from the PHY and forwards it to the client with framing information together with the results of header and error checking functions.

You can configure whether to include or remove the PAD bytes and FCS using the Remove pads and Keep RX CRC parameters.

Figure 10. Flow of Frame Through the MAC RX Without Preamble Pass-Through Illustrates the typical flow of frame through the MAC RX when the preamble pass-through feature is turned off. In this figure, <p> is payload size, and <s> is the number of pad bytes (0–46 bytes).
Figure 11. Flow of Frame Through the MAC RX With Preamble Pass-Through Turned On Illustrates the typical flow of frame through the MAC RX when the preamble pass-through feature is turned on. In this figure, <p> is payload size, and <s> is the number of pad bytes (0–46 bytes).

The following sections describe the functions performed by the RX MAC: