简介: Introduction:Ethernet controllers are devices or modules inside a larger device that manages the communications between the digital processing of a system and an Ethernet interface. It receives and transmits data to and from the local processing bus connection, adapts this flow to comply with the Ethernet standard (IEEE 802.3), and sends or receives the same data to the Ethernet bus. The Ethernet bus connection can support 10,100 or 1000Mbits/s (10/100/1000Base-T respectively) serial communicati