Control registers drive the MDIO interface, set up DMA activity, start frame transmission, and select modes of operation such as Full-Duplex, Half-Duplex, and 10/100/1000 Mbps operation. The register interface is through APB interface, which connects to the core complex subsystem.
The Statistics register block contains registers for counting various types of an event associated with transmit and receive operations. These registers, along with the status words stored in the receive buffer list, enable the software to generate Network Management Statistics registers.