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DAILY NEWS AND INFORMATION
FOR THE GLOBAL GRID COMMUNITY /
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Breaking News -
Networking:
Fujitsu Introduces 10GbE Switch
Chip W/ 10GBASE-CX4 Support
Fujitsu Microelectronics America Inc and Fujitsu Laboratories of America
Inc
introduced their second-generation single-chip 10Gb per second Ethernet
switch, the MB87Q3070, built with the newly developed CX-4 high-speed
electrical interface. The switch chip's CX-4 macro allows designers to use
copper cabling instead of expensive optical interfaces in the interconnects
between the switch chassis, and enables data transfer at distances over one
meter in the backplane.
The new MB87Q3070 with the CX-4 macro is designed for compact, low-power
and
low-cost switches for servers, data centers, clusters, high-performance
computing, enterprise and metro area networks. A 12-port, 10Gb per second
Ethernet switch system requiring under 50 watts of power can be built within a
1U height to support the 15-meter distances incorporated in the IEEE
10GBASE-CX4 standard, with extensions to 25 meters possible using Fujitsu's
technology.
"Adoption of 10Gb per second Ethernet technology will increase rapidly now
that it is possible to deploy it over copper instead of the more expensive
optical modules and fiber," said Keith Horn, vice president of marketing at
Fujitsu Microelectronics America. "The cost and power advantages are
significant. Fujitsu is the industry's first supplier of high-performance 10
Gb per second switch silicon to incorporate this important interface."
The MB87Q3070 includes all the features of the original single-chip 12-port
switch, which was introduced in mid-2003. The new switch has high-speed buffer
memories, SERDES interface, an IEEE 802.3ae-compliant 10Gb per second Ethernet
MAC, and high-speed interface macros on an area measuring just 256 square
millimeters. The MB87Q3070 runs on a core clock speed of 312.5 MHz, and
delivers aggregate bandwidth of 240Gb per second. The device's extended drive
capability makes it ideal for blade-server backplanes and similar
applications.
A high-speed interface macro eXAUI (extended XAUI) also has been developed
and
integrated into the MB87Q3070 switch chip. The eXAUI macro, which supports
standard XAUI and 10GBASE-CX4, extends the reach to distances of 25 meters on
copper cable. This is achieved by using aggressive equalization circuits in
both the transmitter (for pre-emphasis) and receiver (analog filter circuit)
to enable a 25 meter copper cable transfer. In addition to the equalizer
circuits, an Inter Symbol Interference (ISI) monitor, which is integrated into
the eXAUI macro, enables adaptive control for parameter equalization, in order
to compensate for loss through the transfer caused by cable length and other
conditions.
With this capability, eXAUI enables the data transfer over the backplanes
well
in excess of one meter.
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