Fujitsu Debuts First Single-Chip 10 Gbps Ethernet Switch Chip

6/27/2003 - Fujitsu Microelectronics and Fujitsu Laboratories of America, Inc. (FLA) introduced the industry's first 10Gbps Ethernet switch chip developed for layer-2 functions in high-performance server designs. The new 10Gbps switch chip enables system designers to develop compact and less costly switches, using high-performance, multi-ported memory that handles simultaneous read and write operation to and from all twelve 10Gbps ports, providing a total bandwidth capacity of 240Gbps.

The 10Gbps switch chip incorporates twelve 10Gbps Ethernet ports along with high-speed buffer memories and high-speed I/O macros on a total area of only 256mm2. An XAUI SERDES interface and 10Gbps Ethernet MAC, which complies with IEEE 802.3ae, are also included on the chip. Core clock speed is 312.5 MHz, and the aggregate bandwidth totals 240Gbps.

The new switch chip is built with a multi-port memory subsystem that satisfies throughput requirements, even with minimum Ethernet packets. The pin-to-pin switching latencies have been reduced from several microseconds to only 450 nanoseconds, a reduction made possible by a shared-memory control program that, combined with a "cut-through" delivery mechanism, forwards packets quickly to appropriate output ports.

The switch chip satisfies the short latency and high-throughput packet-switching requirements of high-end servers and advanced storage systems, and provides efficient multicast support and reduced fall-through latency. The chip integrates large high-speed digital and analogue circuits, a challenging design task that was supported by various Fujitsu design groups through their particular expertise, according to Dirk Weinsziehr, Senior Director Marketing for Fujitsu Microelectronics Europe.

"The single-chip 10Gbps Ethernet chip is the first of its kind in the industry," said Akira Hattori, vice president of Advanced Interconnect Technology of Fujitsu Laboratories of America. "Existing 10 Gigabit switches, designed for wide area network applications, are very large and expensive, and are characterised by long switching latencies. In contrast, this switch meets the requirements of cluster systems and blade-server systems for smaller, more cost-effective switch ICs with very short latencies."

Fujitsu's new 10Gbps Ethernet IC is capable of drastically reducing the per-port price for 10Gbps Ethernet switch boxes. Typical chip power consumption is approximately 15W.

The new 10Gbps Ethernet switch chip, the MB87Q3050BYL, is fabricated using Fujitsu's 0.11-micron process, and is housed in 728-pin Flip-chip BGA packages. Small-quantity samples and evaluation boards are available now.

The development of this switch was partially funded by the New Energy and Industrial Technology Development Organization (NEDO), which is one of the Japanese Governmental Agencies.

About Fujitsu Laboratories of America
Fujitsu Laboratories of America, Inc. is a wholly owned subsidiary of Fujitsu Laboratories Ltd. (Japan), focusing on research on advanced VLSI CAD, Internet, and interconnect technologies. Conducting research in an open environment, it contributes to the global research community and the working IT industry. It is headquartered in Sunnyvale, CA. For more information, see

About Fujitsu Microelectronics
Fujitsu Microelectronics Europe is a major supplier of semiconductor products to the European and global market. The company's main business focus is on providing systems solutions to the automotive, multimedia, networking/telecommunications and mobile communications markets.

Fujitsu offers a broad range of semiconductor devices, including telecommunications ICs, RF devices, MPEG encoders and decoders, microcontrollers, graphic display controllers and microprocessors, FCRAMs and Flash memory. The company is also a leader in colour plasma display panels. For more information visit Fujitsu Microelectronics Europe's website at

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