Ethernet Function (DAC)
The DAC card has two Ethernet MAC functions. One function provides MAC for the Control bus and the other function provides MAC for the Packet bus. The function implements the MAC and complies with the IEEE standard 802.3. The Ethernet MAC function selected for this example is from CoreEl Microsystems. This function supports both RMII and MII interfaces to the physical ethernet layer, which is implemented off-chip. The instantiation in this example uses the MII interface and supports a 16-bit host interface.