AXI 1G/2.5G Ethernet Subsystem v7.0 Product Guide - 7.0 English - implements a tri-mode (10/100/1000 Mb/s) Ethernet MAC or a 10/100 Mb/s Ethernet MAC. This core supports the use of MII, GMII, SGMII, RGMII, and 1000BASE-X interfaces to connect a MAC to a PHY chip. It also provides on-chip PHY for SGMII and 1000BASE-X modes.