BCM5388

Features:

Highest silicon integration level achieved for an 8-port, 10/100/1000Ethernet switch device
Seventh-generation switch on a chip
Integrates:
Four 10/100/1000 transceivers (802.3ab compliant)
Eight MACs (802.x compliant) with support for 9kByte Jumbo Frames
4 RGMII Interfaces and 128-KByte packet buffer memory
Nonblocking 8 Gigabit Ethernet fully integrated switch fabric
SPI Interface for easy setup and smart unmanaged operation
Classifies packets using 4 802.1p QoS or DiffServ/TOS priority queues
VLAN 4K 802.1Q or port-based supported
Supports up to 8k unicast MAC addresses
Supports MAC-based port aggregation (trunking)
Flow control: Full-duplex (802.3x) and half-duplex options supported
Supports automatic address learning and aging
Internal oscillator circuit
Low power 0.13 m 1.2 V CMOS core: <5W Pd.
Fanless operation supported
Integrated voltage regulator for simplified power supply design
324-pin FBGA package (small form factor 19 mm x 19 mm)




Description

The Broadcom BCM5388 device is a highly integrated solution. BCM5388 combines all 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. BCM5388 complies with IEEE 802.3, 802.3u, 802.3ab 802.3x specifications, including the MAC control, pause frame, and autonegotiation subsections, providing compatibility with all industrystandard Ethernet, Fast Ethernet, and Gigabit Ethernet devices.

The BCM5388 contains four full-duplex 10/100/1000BASE-T transceivers, each of which performs all of the physical layer interface functions for 10BASE-T Ethernet on Category 3, 4, or 5 unshielded twisted-pair (UTP) cable and 100/1000BASE-T Fast/Gigabit Ethernet on Category 5 UTP cable. The remaining 4 ports feature a standard RGMII interface to allow connection to Broadcom's market-leading 10/100/1000 transceiver family in order to provide fiber or copper Gigabit Ethernet connections. The media access controllers on the BCM5388 also support Jumbo Frames which are typically used for high-performance connections to servers because they offer a smaller percentage of overhead on the link for more efficiency.