Cut Through Mode

During Cut Through mode, the Triple Speed Ethernet MAC core streams data directly from the PHY interface to the RX AXI4-Stream interface without intermediate buffering.

This mode offers the lowest latency and is available when the AXI data width matches the PHY data width and the RX FIFO is disabled:
  • AXI4 Data Width = 8, PHY Interface = 8-bit GMII
  • AXI4 Data Width = 16, PHY Interface = 16-bit GMII (SGMII)