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BCM5388
(R)
8GE PORT SWITCH WITH INTEGRATED GE COPPER PHY
FEATURES * * *
Highest silicon integration level achieved for an 8-port, 10/100/1000 Ethernet 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)
SUMMARY OF BENEFITS * * * * * * * * * *
Enables a new generation of lower cost switches with Gigabit Ethernet connectivity and much smaller form factors. Uses field-proven industry-standard 10/100/1000BASE-T transceivers-lowers overall system interoperability and reliability risks. Provides the most cost effective Gigabit Ethernet connectivity to the desktop for all remote, branch, and home office needs. 802.1Q tag VLAN, trunking, and 802.1p priority enables the switch to be designed into a wide variety of applications from unmanaged to smart switch. Jumbo frame support allows the device to be connected to corporate server farms and networks while maintaining maximum TCP/IP performance CPUs are not required to initialize and run in cost-sensitive unmanaged applications, providing true Plug and Play connectivity. Internal oscillator circuit simplifies design and reduces overall system cost. On-chip HP auto-MDI/MDIX on all tranceivers automatically detects and corrects for crossover cables and allows direct switch-to-switch connection. Lowest possible system cost through minimized number of components Higher system reliability and noise reduction due to elimination of component with lowest MTBF (the fan)
* * * * * * * * * * *
8 Gigabit Ethernet Ports for SOHO and Subnetwork Applications
Uplink Copper or Fiber
Printer
Cable/DSL/Wireless Router
IP Phones Server
OVERVIEW
Copper Interface Port 0
Gigabit PHY Gigabit PHY Gigabit PHY Gigabit PHY
Gigabit MAC Gigabit MAC Gigabit MAC Gigabit MAC
Switch Controller
Quality of Service (QoS) Internal Regulators
Copper Interface Port 1 Copper Interface Port 2 Copper Interface Port 3
VLAN Register Space Jumbo Frames Configuration Pins SPI Interface or EEPROM Interface
RGMII Interface Port 4 RGMII Interface Port 5 RGMII Interface Port 6 RGMII Interface Port 7
Gigabit MAC Gigabit MAC Gigabit MAC Gigabit MAC
Port Trunking
Memory
Rate Control Address Management Port Mirroring
The Broadcom BCM5388 device is a highly integrated solution. It 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 m CMOS device. It 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. This device 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. SPI or EEPROM interfaces provide easy programming of the on-chip 802.1p QoS and/or DiffServ/TOS. This allows switch traffic to be given different classes of priority or service-for example, voice traffic for IP phone applications, video traffic for multimedia applications, or data traffic for e-mail applications. Up to 4k virtual LANs (VLANs) can be set up via the SPI port for separation of different users or groups on the network. For multi-Gigabit per second connections, multiple ports of the BCM5388 can be grouped together to form logical links. These links feature automatic load balancing.
Broadcom(R), the pulse logo, and Connecting everything(R) are trademarks of Broadcom Corporation and/ or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the property of their respective owners.
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2003 by BROADCOM CORPORATION. All rights reserved. 5388-PB01-R 09/26/03
Phone: 949-450-8700 Fax: 949-450-8710 E-mail: info@broadcom.com Web: www.broadcom.com

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