BCM5345 データシートの表示（PDF） - Broadcom Corporation
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BCM5345 Datasheet PDF : 2 Pages
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BCM5345
®
25 PORT GIGABIT ETHERNET SWITCHING PROCESSOR
FEATURES
SUMMARY OF BENEFITS
• Supports 25 Gigabit Ethernet ports in wirespeed operation
• Gigabit ports support RGMII interfaces to Standard GE
transceivers
• Uplink port supports GMII interface
• 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
• 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 25 ports at
all layers of functionality. This equates to 50 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 allow the collection and transmission of
statistics for each port and allow an upward migration path for
corporate users.
25 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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