Start of Frame Delimiter - 9.0 English

Tri-Mode Ethernet MAC LogiCORE IP Product Guide (PG051)

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9.0 English

The start of a frame delimiter field marks the start of the frame and must contain the pattern 0xD5 . For transmission on the physical interface, this field is automatically inserted by the Ethernet MAC. For reception, this field is always stripped from the incoming frame before the data is passed to you.