OVERVIEW
The Broadcom BCM5380M device is a highly integrated solution. It combines all of the functions of a high-speed switch system including packet buffer, PHY transceivers, media access controllers, address management, and a nonblocking switch fabric into a single 0.13-µm CMOS device. It complies with the IEEE 802.3, 802.3u, 802.3ab 802.3x specifications including the MAC control, pause frame, and autonegotiation subsections, providing compatibility with all industry standard Ethernet, and Fast Ethernet, and Gigabit Ethernet devices.

FEATURES
• The highest level of silicon integration achieved for an eight+two-port, 10/100/1000 Ethernet switch device
• Sixth-generation switch on a chip
• The BCM5380M integrates:
    • Eight 10/100 transceivers (802.3u compliant)
    • Nine 10/100 media access controllers (802.x compliant)
    • Two 10/100/1000 media access controllers
    • One integrated 10/100/1000BASE-T/TX transceiver (802.3ab compliant)
    • 256-KB packet buffer and 128-KB control memory
    • Nonblocking switch fabric
    • One integrated 1-Gbps SerDes module
• Cascadable to 24 Fast Ethernet + 6 Gigabit Ethernet ports through a SerDes expansion port, 24FE + 2GE nonblocking
• Packet classification 802.1p QoS priority queues
• VLAN 4K 802.1Q or port-based supported
• Reverse MII, MII, or 7-wire interface supports an additional 100BASEFX or 100BASE-TX connection or uplink
• Supports up to 4,000 unicast MAC addresses
• Flow control: full-duplex (802.3x) and half-duplex options supported
• Supports automatic address learning and aging
• Internal oscillator circuit
• Low power 0.13-µm 1.2V CMOS core: 3.5 W Pd.
• 324-pin FBGA package (small form factor 19 mm ∞ 19 mm)
• Management features:
    • Low-cost MIB Autocast™ function
    • Hardware support for simple network management protocol (SNMP), remote network monitoring (RMON), and spanning tree