AT79C1030 Datasheet | Atmel

Features - - - - - - - - - - - - - - - 8-port 10/100/1000Mb/s Ethernet MII/GMII Switch Provides Packet Switching Functions Between 8 Ethernet Ports Advanced Co S (Class of Service) Supports 4-level Priority Switching Duplex Mode Auto-negotiation Supported Full-duplex Flow Control (802.3x) and Half-duplex Back Pressure VLAN 802.1Q or Port-based Supported (Port-based, MAC-based and Protocol Based) ARP/Broadcast Filter (Optional) 8 Gb E Ports with Non-blocking Switching Performance Supports Automatic Address Learning and Aging Integrated MAC and VLAN Address Tables On-chip Packet Buffer Supports Store-and-Forward Switching Architecture SPI (RS-232 Interface) for Setup and Unmanaged Operation Multicast and Broadcast Storm Control Up to 36-Kbyte Media Access Control (MAC) Address Cache 1.8V and 3.3V Supply 8-Port Gigabit Ethernet Co S Switch Description The AT79C1030 device bines all the functions of a high-speed switch, including packet buffer, Media Access Controllers (MAC), address management, and a nonblocking switch fabric. It plies with IEEE 802 specification, providing patibility with all industry standard Ethernet, Fast Ethernet, and Gigabit Ethernet devices. The AT79C1030 utilizes the Store and Forward switching architecture to manage packet switching between the eight independent Ethernet ports. The switch records (learning), the relation between MAC addresses (including VLAN information) and the actual ports. Next, the switch will resolve (forwarding) the destination MAC address of the ingress packet, then it selects the related ports to transmit the packet. The device is utilizing and maintaining a MAC address table and a VLAN table to acplish this task. Using Store and Forward, the device reads the whole ining frame into an internal on-chip buffer and calculates its own frame check sequence. The switch then pares its CRC figure to the frame's CRC. If the two CRCs are the same, the switch will consult its address look-up table, create the virtual link and...