phy_tx_en - 3.0 English

AXI Ethernet Lite MAC LogiCORE IP Product Guide (PG135)

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3.0 English

The AXI Ethernet Lite MAC uses the Transmit Enable signal ( phy_tx_en ) to indicate to the PHY that it is providing nibbles at the MII interface for transmission. It is asserted synchronously to phy_tx_clk with the first nibble of the preamble and remains asserted while all nibbles are transmitted. This Figure shows the phy_tx_en timing during a transmission with no collisions.

Figure 2-1: Transmission with No Collision

X-Ref Target - Figure 2-1