BCM5345M データシートの表示（PDF） - Broadcom Corporation

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BCM5345M

24 PORT GIGABIT ETHERNET SWITCHING PROCESSOR

Broadcom Corporation 

BCM5345M

®

24 PORT GIGABIT ETHERNET SWITCHING PROCESSOR

FEATURES

SUMMARY OF BENEFITS

• Supports 24 Gigabit Ethernet ports in wirespeed operation

• Gigabit Ethernet ports support RGMII interfaces to Standard

GE Transceivers

• On-chip L2 search table supports 8K MAC addresses

• Jumbo Frame support (9 Kbyte)

• Supports 4K VLAN address and 802.1s Multiple Spanning

Tree protocol

• Supports 802.1w Rapid Spanning Tree

• Supports 802.1p and/or DiffServ with four priority queues

• Supports 802.3ad link aggregation

• Supports selected MIB groups in RMON

• Supports up to 256 IP multicast groups

• Full-duplex and half-duplex operation with IEEE 802.3x flow

control and backpressure.

• On-chip 512 Kbyte packet buffer memory with sophisticated

buffer management.

• Offers per-port rate control

• Supports 802.1x access control protocol

• Built in 32-bit, 33-MHz PCI bus interface

• Extremely low power consumption (4W)

• Packaged in 676-pin BGA

• Enables a new generation of lower-cost switches with Gigabit

Ethernet connectivity and much smaller form factors.

• Complete switch on a chip integrates multilayer forwarding

and filtering logic and internal ARL tables and packet

buffering.

• Filters and forwards traffic at full wirespeed on all 24 ports at

all layers of functionality. This equates to 48 Gbps of

bandwidth.

• Provides the most cost-effective Gigabit Ethernet connectivity

to the desktop for all remote and branch office as well as

enterprise workgroup needs.

• Supports 8K internal MAC addresses so even large, segmented

networks can be supported.

• Supports Quality of Service (QoS) for prioritization of

different traffic types.

• Full support of VLANs allows separation of user groups and

minimizes superfluous traffic.

• Jumbo frame support allows the device to be connected to

corporate server farms and networks while maintaining

maximum TCP/IP performance.

• Supports the latest standards used in corporate networks for

discovery, management, access control, and traffic control.

• On-chip MIB registers allows the collection and transmission

of statistics for each port and allows an upward migration path

for corporate users.

24 Gigabit Ethernet Ports for SOHO and Subnetwork Applications

Printer

PCs

Gigabit Ethernet Uplink

Copper or Fiber

Cable/DSL/Wireless

Router

IP Phones

Gigabit Ethernet Server

PCs

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