The data interface consists of a channel for the transmitter and a separate channel for the receiver. It consists of a data interface and a management interface between a MAC and a PHY (Fig. The Media Independent Interface (MII) is an Ethernet industry standard defined in IEEE 802.3. The latest MACs support operation at both 10 Mbits/s and 100 Mbits/s. The Ethernet MAC is defined by the IEEE-802.3 Ethernet standard. It can also lower power consumption, especially if power-down modes are implemented. This enables the MAC and PHY to be matched and reduces the overall pin count and chip footprint. The trick is to incorporate the microcontroller, Ethernet MAC, and PHY on a single chip, thereby eliminating most external components. How do you implement a single-chip Ethernet microcontroller?
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