4.2. Ethernet interface

The Ethernet interface is implemented with a SMC LAN91C111 10/100 Ethernet single-chip MAC and PHY. This is provided with a slave interface to the AHB Lite system bus by the PLD on the baseboard. The architecture of the Ethernet interface is shown in Figure 4.2.

Figure 4.2. Ethernet interface architecture

J7 is an isolating RJ45 type of connector that incorporates two network status LEDs.The function of the LEDs can be set to indicate either link, activity, transmit, receive, full duplex, or 10/100 selection. See the data sheet for the LAN91C111 for more details on programming the registers.

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