OVERVIEW
The BCM5691 network switch is a scalable, modular chip solution with 12 ports. Each of these flexible ports supports Gigabit Ethernet or 10/100 Mbps Ethernet. Additionally, the BCM5691 supports both copper and fiber physical interfaces. The BCM5691 has a fully integrated SerDes functionality consisting of a Gigabit Ethernet or a SGMII PHY interface.

FEATURES
• 12 10/100/1000 Mbps Ethernet ports supporting both copper and fiber connections
• Integrated high-performance SerDes
   • Gigabit Ethernet SerDes per port
   • 4-pins per port SGMII interface to Gigabit Ethernet PHYs
• 32 million packets/second (line rate) aggregate switching capacity
• Supports 8 classes of service (CoS) per port
• Port trunking and mirroring supported across stacked switches
• Fully integrated data and address memory on-chip
• Advanced packet flow control:
   • Head of line blocking prevention
   • Full-duplex flow control (802.3x compatible)
• ContentAwareTM network processing per port
   • Line rate multifield packet classification
   • Supports IEEE802.1p, TOS/DiffServ, rate limiting, policing, priority tagging, and remapping
• Support for jumbo Frames of up to 9 KB
• Advanced diagnostic features including IEEE1149.1 JTAG boundary scan and BIST functionality
• Low power, enhanced thermal 480-pin EBGA package

TARGET APPLICATIONS
• Multilayer switch in modular Gigabit Ethernet switches
• High port count stand-alone or stackable Gigabit Ethernet switches
• Chassis and in-server switch blade applications