TC9208M is a fully integrated 8 port 10/100/1000 smart Ethernet switch controller designed for low cost and high performance solutions. The chip embeds necessary SSRAM for packet buffering and MAC address table. It provides MII / GMII interface for all ports. A store-and-forward switching method using a non-blocking architecture is implemented within TC9208M to improve the availability and bandwidth. The chip embeds packet buffer, which it supports normal and priority queues for each transmission port. TC9208M provides evolved CoS with four levels of priority. The priority can be checked via ip header and 802.1q vlan tag.