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Fujitsu Introduces First Single-Chip 10Gbps Ethernet Switch Chip
June 26, 2003
By OpticallyNetworked Staff
Fujitsu has introduced the industry's first 10Gbps Ethernet switch chip, MB87Q3050, 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 256 millimeters square. A 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 10Gbps Ethernet IC is capable of reducing the per-port price to approximately $200, from the much higher cost of $20,000, which is normal for 10Gbps Ethernet switch boxes. Typical chip power consumption is approximately 15W.
The new 10Gbps Ethernet switch chip, the MB87Q3050, is fabricated using Fujitsu's 0.11-micron process, and is in 728-pin Flip-chip BGA packages. Small-quantity samples and evaluation boards are available now. Prices start at US $750 each in 10,000-unit quantities.
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