Low Latency E-Tile 40G Ethernet Intel® FPGA IP User Guide

ID 683486
Date 8/31/2021
Public
Document Table of Contents

4.1.1.1. Frame Padding

When the length of the client frame is less than 64 bytes, the TX MAC module inserts pad bytes (0x00) after the payload to create a frame length equal to the minimum size of 64 bytes (including CRC).

The IP core filters out all client frames with lengths less than 9 bytes. If l2_tx_startofpacket and l2_tx_endofpacket are asserted in the same cycle, the IP filters out the frame regardless of preamble pass-through mode.

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