The 10/100/1000 Ethernet MAC Controller DO-254 IP Core implements the Media Access Control as specified in the IEEE 802.3-2008 specification.
It can be configured to interface with the PHY through MII, RMII, GMII or SGMII, giving a wide choice to the user for the selection of the chip to connect to the physical layer. It can be configured to operate at 10 Mbps, 100 Mbps or 1000 Mbps, allowing the user to select the speed in base of their needs such as power, size, latency, etc.