BCM5348M
®
SINGLE-CHIP L2+ MANAGED SWITCH WITH 48 10/100 PORTS + FOUR GbE PORTS
FEATURES
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Eighth-generation ROBO L2+ 48 FE + four SGMII interfaces
Twenty-four fully integrated 10/100 PHYs
Twenty-four ports providing external PHY connectivity via SSSMII
Compact Field Processor (CFP) based on TCAM technology
Clustering with single IP management
Double Tagging supports traffic aggregation
QoS packet classification supports four priority queues
Port-based VLAN and 802.1Q VLAN with 4K entries
Spanning Tree (IEEE 802.1D/1s/1w)
MAC-based trunking with automatic link failover
Port mirroring
IGMP snooping Layer2/3
SUMMARY OF BENEFITS
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The BCM5348M includes:
- Twenty-four 10/100 transceivers for TX/FX
- Forty-eight media access controllers
- Five Gigabit media access controllers
- Four megabit total of packet buffer and control memory
- Nonblocking switch fabric supports up to 48 FE + 4 GbE ports
Flexible TCAM-based ContentAware™ Classification technology
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for affordable security and Access Control List
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Double Tagging enables ISP applications.
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Enables a new generation of lower cost FE switches with the
Programmable Broadcast, Multicast, and Unknown Unicast storm
control
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Per port bandwidth/rate control
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8K MAC addresses with automatic learning and aging
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Protected port
Multicast address table for 256 entries
RvMII, MII, or GMII additional port for management
EEPROM, SPI, MDC/MDIO, or EB Bus Interfaces
Hardware and software reset
Provides per port 70+ MIB counters with MIB Snapshot capability
Jumbo frame support up to 2048 bytes
JTAG
highest integration of enhanced L2+ features and maximum
connectivity.
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Optimized for WebSuperSmart™ managed switch design.
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802.1Q VLAN allows segmentation of network into smaller
broadcast domains to preserve bandwidth and increase network
security.
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Four flexible Class of Service (CoS) queues per port ensure the
lowest latency to high-priority traffic. This enables the switch to
support a wide variety of delay-sensitive video and audio multicast
applications.
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IEEE 802.3ad link aggregation increases effective bandwidth and
provides redundancy of a link.
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IEEE 802.1X Extensive Authentication Protocol over LAN
(EAPOL) plus MAC address locking enhances network port
security.
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Storm and Bandwidth/Rate Control provide better traffic profile
management.
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Access to all internal registers through EB Bus, SPI, or MDC/
MDIO interfaces.
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Hardware support for implementing SNMP and RMON.
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Low-power consumption and embedded regulators allow simple
PCB design.
Embedded 1.8V and 1.2V regulators, typical power consumption:
5W
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676-pin PBGA package
48-Port FE Switch for Small/Medium Businesses
Uplink Copper or Fiber
Printer
Cable/DSL/Wireless
Router
IP Phones
Server
OVERVIEW
Auto MDI/MDIX
Auto MDI/MDIX
Auto MDI/MDIX
10/100
PHY 24
10/100
PHY 25
10/100
PHY 26
MAC
MAC
MAC
8K L2 MAC Table
Traffic Aggregation
MIB Counters
QoS
Auto MDI/MDIX
SSSMII
10/100
PHY 47
MAC
MAC 0-23
GMAC
GMAC
4K VLAN Table
Port Trunking
SGMII
BCM5464R
IGMP Snooping
GMAC
GMAC
4-Mb shared buffer
Secure MAC
Storm Control
LEDs
SGMII or IMP Interface
CPU Interface
LED Interface
GMAC
SPI/EB Bus
Interface
ContentAware
Compact
Field Processor
Rate Control
Functional Block Diagram
The BCM5348M is designed based on the field-proven industry leader
ROBOswitch
®
. This device combines all the functions of a high-speed
switch system including packet buffers, PHY transceivers, media access
controllers, address management, and a nonblocking switch fabric into a
single 0.13
µm
CMOS device. It complies with IEEE 802.3
specifications, including the MAC control PAUSE frame and auto-
negotiation subsections, providing interoperability with all industry-
standard Ethernet, Fast Ethernet, and Gigabit Ethernet devices.
The BCM5348M is the industry’s first Ethernet to integrate forty-eight
FE MACs and five GbE MACs and twenty-four full-duplex 10BASE-T/
100BASE-TX/FX Fast Ethernet transceivers in a single chip. The
BCM5348M also supports four SGMII interfaces, providing flexible 10/
100/1000BASE-TX and fiber connectivity.
The BCM5348M supports advanced ContentAware processing via a
Compact Field Processor (CFP). Up to four intelligent ContentAware
processes are performed in parallel for every packet. This flexible engine
uses TCAM-based architecture that allows wildcard capabilities.
Furthermore, multiple actions can be performed per packet as a result of
a match. Action examples include dropping, changing the forward port
map, adding forward port, assigning the priority of a frame, etc. These
advanced ContentAware processes are well-suited for both Access
Control List and Security protection, for example, DoS prevention.
The BCM5348M supports double tagging, which provides additional
level of classification. Double Tagging enables Service Provider to
differentiate customer traffic.
The BCM5348M supports 8K MAC addresses, 4K VLAN addresses,
and stores up to 256 multicast addresses including IP multicast. The
BCM5348M also supports 802.1d Spanning Tree, 802.1s Multiple STP,
802.1w Rapid STP, and flexible ingress and egress checking rules for
VLAN processing.
The BCM5348M supports up to four CoS queues per egress port – ideal
for delay-sensitive multimedia applications. Traffic can be assigned to
these CoS queues based on the port ID, the MAC address, the 802.1p
priority field in Layer 2, the TOS field in IPv4, or the DiffServ field in
IPv6 headers. Together with other advanced features, such as 802.1x
EAPOL protocol filtering, port bandwidth/rate control, MAC address
locking, and IGMP snooping at Layer 2 and Layer 3, the BCM5348M
allows system vendors to build advanced L2+ switch systems for the
multitenant/multidweller unit (MDU/MTU) markets.
The BCM5348M family of switches is optimized for WebSuperSmart
and L2+ managed designs. The new level of integration brings L2
management to SMB switches at an affordable price. Single chip
replaces the typical multichip solutions in the market today.
For Network Management, the BCM5348M includes 70+ on-chip MIB
counters with snapshot capability to collect receive and transmit
statistics from each port for supporting the Etherlike MIB, Bridge MIB,
MIB II (interfaces) and the RMON MIB (Groups 1, 2, 3, and 9).
Product ordering information: BCM5348M (48 FE + 4 SGMII)
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
© 2006 by BROADCOM CORPORATION. All rights reserved.
5348M-PB01-R
04/04/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
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