E-tile Hard IP User Guide: E-Tile Hard IP for Ethernet and E-Tile CPRI PHY Intel® FPGA IPs

ID 683468
Date 8/04/2021
Public

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2.9.1.1.4. Frame Padding

When the length of client frame is less than 64 bytes and greater than eight bytes, the TX MAC module inserts pad bytes after the payload to create a frame length equal to the minimum size of 64 bytes. If the i_skip_crc signal is asserted while writing frame data, the core does not insert PAD bytes even if the frame is shorter than 64 bytes long.

CAUTION:
The E-Tile Hard IP for Ethernet Intel FPGA IP drops client frames of less than nine bytes because it cannot transfer the frames to the E-tile. You must ensure such frames do not reach the TX client interface.

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