E
T4000 Single-Chip 28 x 1 Gbits/s
Layer 2+
E
thernet Switch
Overview
The 28-port
E
T4000 is part of the Agere
Systems
E
T4K family of gigabit
E
thernet
switch chip sets. These cost-effective, true
switch-on-chip solutions have been
developed to help simplify your design and
production efforts for Gb
E
switching systems.
The Agere Systems
E
T4000 is a complete
switch solution that provides 28 gigabit
E
thernet (Gb
E
) ports (I
EEE
®
compliant 802.3z
10/100/1000 Mbits/s
E
thernet 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.
The
E
T4000 is offered in a 525-pin FCBGA
package and is fabricated in advanced
0.13 µm CMOS process technology. The
complete solution is designed to address
the power and size constraints in switching
applications. A seamless interface and
common API for use with the Agere
E
T1081
TruePHY™
multiport PHY will help reduce
costs and ensure performance.
The
E
T4000 is a highly integrated and fully featured
Layer 2 Ethernet bridge with integrated MACs, packet
buffers, and address tables. Its high levels of integration
can help significantly reduce design costs, reduce power
and space requirements, and increase reliability. The
E
T4000 offers proven TCP/IP network security features
such as L2/L3/L4 ACL as well as QoS capabilities. It
offers advanced service recognition and queuing to
support the ability to create and manage new QoS-
based services. These comprehensive QoS features and
the
E
T4000 wire speed performance enables enterprise
desktop aggregation switching applications.
A reference system design kit is available for the
E
T4000,
for more information please contact your Agere Systems
sales representative.
• Twenty-eight 10/100/1000 Mbits/s
E
thernet ports
(24 SGMII interfaces to Gb
E
copper PHYs, up to four
SerDes interfaces to Gb
E
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
I
EEE
802.1D bridging.
•
E
xtensive VLAN support.
Features
AGERE [ AGERE SYSTEMS ]
