BOARDCOM BCM5461

BCM5324M
®
SINGLE-CHIP L2+ MANAGED SWITCH WITH 24 10/100 PORTS + 2 GbE PORTS
SUMMARY OF BENEFITS
FEATURES
• Seventh-generation ROBO L2+ 24FE + 2GE switch with two
GMII/RGMII/TBI interfaces
• Twenty-four fully integrated 10/100 PHYs with support of
Advanced Cable Diagnostics in the Broadcom PHY technology
• QoS packet classification supports four priority queues
• Port-based VLAN and 802.1Q VLAN with 4k entries
• Supports traffic aggregation via double tagging
• Spanning Tree (IEEE 802.1D/1s/1w)
• MAC-based trunking with automatic link failover
• Port mirroring
• IGMP snooping Layer2/3
• Over 70 MIB counters for per port management statistics
• Up to 24 Static Secure MAC addresses per port
• Programmable Broadcast, Multicast, and Unknown Unicast
storm control
• Per port bandwidth/rate control
• 8K MAC addresses with automatic learning and aging
• Protected port
• Multicast address table for 256 entries
th
• 25 FE port via MII or reversed MII mode for management
• MDC/MDIO and SPI interfaces
• Internal oscillator simplifies design and reduces cost
• JTAG
• Embedded 2.5V and 1.2V regulator, typical power
consumption: 3.5W
• 400-pin PBGA package
• The BCM5324M includes:
-
24 10/100 transceivers for TX/FX
24 media access controllers
Two Gigabit media access controllers
3 Mb total of packet buffer and control memory
Non-blocking switch fabric supports up to 24 FE+2 GE
ports
• Advanced Cable Diagnostics minimize the need for expensive
cable troubleshooting equipment.
• Enables a new generation of lower cost FE switches with the
highest integration of enhanced L2+ features and maximum
connectivity.
• Optimized for WebSmart™ managed switch design.
• 802.1Q VLAN allows segmentation of network into smaller
broadcast domains to preserve bandwidth and increase
network security.
• Four flexible Class of Service (CoS) queues per port assures
the lowest latency to high-priority traffic. This enables the
switch to support a wide variety of delay sensitive video and
audio multicast applications.
• IEEE 802.3ad link aggregation increases effective bandwidth
and provides redundancy of a link.
• IEEE 802.1X Extensive Authentication Protocol over LAN
(EAPOL) plus MAC address locking enhances network port
security.
• Storm and bandwidth/rate control provide better traffic
profile management.
• Access to all internal registers through SPI or MDC/MDIO
interfaces.
• Hardware support for implementing SNMP and RMON.
• Low-power consumption and small package allow simple PCB
design.
OVERVIEW
Auto MDI / MDIX
10/100
PHY 0
MAC
Auto MDI / MDIX
10/100
PHY 1
MAC
Auto MDI / MDIX
10/100
PHY 2
MAC
Auto MDI / MDIX
10/100
PHY 23
MAC
MIB Counters
QoS
8K L2 MAC Table
Traffic Aggregation
4K VLAN Table
Port Trunking
IGMP Snooping
Secure MAC
3 Mb Shared Buffer
Interface
Storm Control
Internal Osc. Circuit
Rate Control
GMII / RGMII / TBI
GMAC
BCM5461
GMII / RGMII / TBI
GMAC
BCM5461
LEDs
MII / RvMII Interface
CPU Interface
LED
Interface
MAC
SPI / CPU
Interface
BCM5324M Block Diagram
BCM5324M 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 non-blocking switch fabric into
a single 0.13 μm CMOS device. It complies with IEEE 802.3
specifications, including the MAC control PAUSE frame and autonegotiation subsections, providing interoperability with all industrystandard Ethernet, Fast Ethernet and Gigabit Ethernet devices.
BCM5324M is the industry first Ethernet to integrate twenty-four fullduplex 10BASE-T/100BASE-TX/FX Fast Ethernet transceivers. Each
transceiver incorporates the Broadcom PHY Advance Cable Diagnostic
technology, which can detect cable shorts as well as open and measure
the cable length. BCM5324M also supports two GMII/RGMII/TBI
interfaces, providing flexible 10/100/1000BASE-TX and fiber
connectivity.
BCM5324M supports 8K MAC addresses, 4K VLAN addresses and
stores up to 256 multicast addresses including IP multicast. BCM5324M
also supports 802.1d Spanning Tree, 802.1s Multiple STP, 802.1w Rapid
STP, and flexible ingress and egress checking rules for VLAN
processing.
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 Layer2 and Layer3 allow system vendors to build
advanced L2+ switch systems for the multitenant/multidweller unit
(MDU/MTU) markets.
The BCM5324M family of switches is optimized for WebSmart and L2
managed designs. The new level of integration brings L2 manageable to
SMB switches at an affordable price. Single chip replaces the typical 3or 4 chip solutions in the market today.
For Network Management, the BCM5324M includes 70+ on-chip MIB
counters 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, 9).
Product ordering information:
• BCM5324M (24FE+2G)
• BCM5322M (24FE+2MII)
• BCM5321M (16FE+2G)
• BCM5320M (8FE+2G)
BCM5324M supports up to four CoS queues per egress port, ideal for
delay sensitive multimedia applications. Traffic can be assigned to these
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owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2006 by BROADCOM CORPORATION. All rights reserved.
5324M-PB01-R
04/07/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com