GTS Ethernet Intel® FPGA Hard IP User Guide: Agilex™ 5 FPGAs and SoCs

ID 817676
Date 4/07/2025
Public

Visible to Intel only — GUID: uaq1698068084305

Ixiasoft

Document Table of Contents

13.2.2. MAC RX Datapath

When the RX MAC in the channel is enabled, it receives Ethernet frames from the PHY and forwards them 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 Bytes to remove from RX Frames parameter.

Figure 99. Flow of Frame Through the MAC Avalon® Streaming Interface RX Without Preamble Pass-ThroughThe figure 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 100. Flow of Frame Through the MAC Avalon® Streaming Interface RX With Preamble Pass-Through The figure 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: