Overview

The 28-port ET4000 is part of the Agere Systems ET4K family of gigabit Ethernet switch chip sets. These cost-effective, true switch-on-chip solutions have been developed to help simplify your design and production efforts for GbE switching systems.

The Agere Systems ET4000 is a complete switch solution that provides 28 gigabit Ethernet (GbE) ports (IEEE® compliant 802.3z 10/100/1000 Mbits/s Ethernet MACs) in a single chip. Twenty-four of the MACs connect to external PHYs via 6-pin LVDS SGMII interfaces, four can be connected to external fiber PHYs via SerDes interfaces.

Features

• Twenty-eight 10/100/1000 Mbits/s Ethernet ports(24 SGMII interfaces to GbE copper PHYs, up to four SerDes interfaces to GbE fiber ports).

• Aggregate 42 Mpackets/s switching capacity (wire speed operation).

• 32-bit, 66 MHz PCI processor interface.

• Two MDIO interfaces.

• Integrated packet buffer memory.

• Integrated address table memories.

• Full IEEE 802.1D bridging.

• Extensive VLAN support.

• L2/L3/L4 classification for access control list (ACL) and quality of service (QoS).

• Supporting IPv4 and IPv6

• Advanced traffic management functions.

• Link aggregation and mirroring.

• Advanced 0.13 µm CMOS technology.

• 525-pin FCBGA package.

Applications

The Agere Systems ET4000 chip set solutions are used to create competitive Layer 2+ gigabit Ethernet desktop switches. They can be used for a 24-port port gigabit Ethernet switch in standalone configuration, or with the addition of four fiber ports in standalone configuration, or in high-density gigabit Ethernet fabric switches.