General Description

The DM9103 is a fully integrated, high performance, and cost-effective fast Ethernet switch controller with one general PCI bus interface, two ports 10M/100Mbps PHY, and one port MII or RMII interface. The general PCI bus connects directly to internal host MAC with 32-bit data registers and internal memory. The host MAC has the similar functions as other 10/100Mbps PHY or MII does. This makes the DM9103 act as an extended four ports

switch and to shorten the latency from PCI port to destination port.

Features

Ethernet Switch with two 10/100Mb PHY, one MII/RMII, and PCI bus interface

Support Reverse-MII

PCI bus master architecture

EEPROM interface for power up configurations

Support TCP/UDP/IPv4 checksum offload

Support HP Auto-MDIX

Support IEEE 802.3x Flow Control in Full-duplex mode

Support Back Pressure Flow Control in Half-duplex mode

Per port support 4 priority queues by Port-based, 802.1P QoS, and IP TOS priority

Support 802.1Q VLAN up-to 16 VLAN group

Support VLAN ID tag/untag options

Per port support bandwidth, ingress and egress rate control

Support Broadcast Storming filter function

Support Store and Forward switching approach

Support up-to 1K Uni-cast MAC addresses

Automatic aging scheme

Support MIB counters for diagnostic

128-pin LQFP 1.8V internal core, 3.3V I/O with 5V tolerant