16端口交换芯片，BCM5396详细开发资料。16-GE PORT SWITCH WITH INTEGRATED SerDes。Supports up to 4k unicast MAC addresses。Enables a new generation of lower-cost switches with Gigabit Ethernet connectivity and much smaller form factors.Supports automatic address learning and aging • Support for Spanning Tree and Rapid Spanning Tree • Low power 0.13 μm 1.2 V CMOS core: <2.5W Pd. Supports 802.1x MAC Security • Port-based rate control feature with 64kbps granularity • 256-pin FBGA package (small form factor 17 mm x 17 mm)