OVERVIEW
The Broadcom BCM5346M device is a highly integrated solution providing connectivity for 16 ports of Gigabit Ethernet. It combines all the functions of a high-speed switch system, including packet buffer, media access controllers, address management, and a nonblocking switch fabric as well as a CPU interface into a single 0.13 µm CMOS device. It complies with IEEE 802.3, 802.3u, 802.3ab, and 802.3x specifications, including the MAC control, pause frame, and auto negotiation subsections, providing compatibility with all industry standard Ethernet, Fast Ethernet, and Gigabit Ethernet devices.

FEATURES
• Supports 16 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