BCM5325
®
FIVE-PORT 10/100 SWITCH WITH ON-CHIP PACKET BUFFER
FEATURES
•
The highest level of silicon integration achieved for a five-port
10/100 Ethernet switch device
SUMMARY OF BENEFITS
•
Enables a new generation of lower cost 10/100 switches in
much smaller form factors
•
Fourth generation switch on a chip
•
The BCM5325 integrates:
•
•
•
•
Five transceivers (802.3u compliant)
Six media access controllers (802.x compliant)
128-KB packet buffer
Non-blocking switch fabric
•
Utilizes field-proven industry-standard 10BASE-T/100BASE-
TX Fast Ethernet transceivers—lowering overall system
interoperability and reliability risks
•
Flexible interfaces support a wider variety of application
needs—fiber for long distances or an additional 100TX port
•
Sufficient address range handles all remote office, branch
office and home office needs
•
Packet classification 802.1p QoS priority queues
•
Port-based VLAN
•
MII or 7-wire interface supports an additional 100FX or 100TX
connection enabling a sixth user connection or uplink
•
Port VLAN and 802.1p priority enables the switch to be
designed into a wide variety of applications
•
CPUs are not required to initialize and run in cost-sensitive
unmanaged applications—providing true Plug and Play
connectivity
•
Supports up to 2K MAC addresses
•
Flow control: full-duplex (802.3x) and half-duplex options
supported
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Internal oscillator circuit simplifies design and reduces
overall system cost
•
•
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Supports automatic address learning and aging
Internal oscillator circuit
Typical power consumption: < 1.4W
128-pin PQFP package
•
On-chip HP auto-MDI/MDIX feature automatically detects and
corrects for crossover cables and allows direct switch-to-
switch connection
Low Cost Five-Port 10/100 Stand-alone Switch
OVERVIEW
A uto MDI/MDIX
10/100 P HY
MA C
A uto MDI/MDIX
10/100 P HY
MA C
S witc h F abric
and A R L L ogic
A uto MDI/MDIX
10/100 P HY
MA C
A uto MDI/MDIX
10/100 P HY
MA C
P riority Mapping
R egis ter 802.1p
A uto MDI/MDIX
10/100 P HY
MA C
DMA Interfac e
MII or 7 wire
Interfac e
MA C
128 K B P ac ket B uffer
E 2P R OM
Interfac e
E 2P R OM
Interfac e
L E D Interfac e
L E Ds
The Broadcom BCM5325 device is a highly integrated solution. It
combines all of the functions of a high-speed switch system—
including packet buffer, PHY transceivers, media access
controllers, address management, and a nonblocking switch
fabric—into a single 0.18µ CMOS device. It complies with the
IEEE 802.3, 802.3u, and 802.3x specifications, including the MAC
control PAUSE frame and auto-negotiation subsections, providing
compatibility with all industry-standard Ethernet and Fast Ethernet
devices.
This device contains five full-duplex 10BASE-T/100BASE-TX Fast
Ethernet transceivers, each of which performs all of the physical
layer interface functions for 10BASE-T Ethernet on Category 3, 4,
or 5 Unshielded Twisted-Pair (UTP) cable and 100BASE-TX Fast
Ethernet on Category 5 UTP cable.
E2PROM interfaces provide easy programming of the 802.1p
QoS queues. This allows switch traffic to be given different
classes of priority or service, for example, voice traffic for IP phone
applications, video traffic for multimedia applications, or data
traffic for e-mail applications.
Broadcom
®
, the pulse logo, and
Connecting everything
®
are trademarks of Broadcom
Corporation and/or its subsidiaries in the United States and certain other countries. All other
trademarks mentioned are the property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2004 by BROADCOM CORPORATION. All rights reserved.
5325-PB05-R
07/13/04
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
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