OVERVIEW
The Broadcom BCM5389 device is a highly integrated solution ideally suited for standalone Gigabit Ethernet switches and Gigabit Ethernet control plane and backplane applications. It combines all the functions of a high-speed switch system, including packet buffer, SerDes, media access controllers, address management, and a nonblocking switch fabric into a single 0.13 µm CMOS device.
The BCM5389 complies with IEEE 802.3, 802.3u, 802.3ab, and 802.3x specifications, including the MAC control, pause frame, and autonegotiation subsections, providing compatibility with all industrystandard Ethernet, Fast Ethernet, and Gigabit Ethernet devices.

FEATURES
• Eighth-generation switch on a chip
• Integrates
• One GMII/RGMII/RvMII interface
• Nine MACs (802.x compliant) with support for 9-KB jumbo frames
• Eight SGMII/SerDes interfaces and 128-KB packet buffer memory
• Non-blocking 9-Gigabit Ethernet fully integrated switch fabric
• SPI Interface for easy setup and managed operation
• Classifies packets using four 802.1p QoS or DiffServ priority queues
• VLAN 4k 802.1Q or port-based support
• Supports up to 4k unicast MAC addresses
• Supports MAC-based port aggregation (trunking)
• Flow control
• Full-duplex (802.3x) and half-duplex options support
• Supports automatic address learning and aging
• Support for Spanning Tree and Rapid Spanning Tree
• Low power 0.13 µm 1.2 V CMOS core: <1.5W Pd.
• Fanless operation support
• Port-based rate control feature with 64kbps granularity
• 256-pin FBGA package (small form factor 17 mm x 17 mm)