22.214.171.124. 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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