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Xilinx Virtex-4 PFGAs in NEC WDM systems

Posted: 09 May 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Xilinx? NEC? Virtex-4? FPGA?

Xilinx Inc. announced that its Virtex-4 FX FPGA has been chosen by NEC for its SFI-5-compliant 40Gbps wavelength division multiplexing (WDM) optical communications systems.

According to the press release, NEC's SpectralWave DW4200 series of WDM reconfigurable optical add/drop multiplexers is touted as the first to achieve 40Gbps over existing fiber-optic infrastructure and multiplexing of up to 80 wavelengths. The series provides a simplified and cost-efficient network platform, which can be easily adapted to address anticipated future operator bandwidth demands and overcome some design limitations of conventional metro dense WDM systems.

Xilinx's Virtex-4 FPGAs are playing a major role in the building of cutting edge optical communications systems, as the only devices in the industry to comply with SFI-5, the company said. The FPGAs also support all major serial standards including PCI Express, Serial RapidIO, Ethernet and Fibre Channel, enabling the design of multiple applications using the same device, thus reducing total solution cost. Virtex-4 FX RocketIO transceivers provide advanced equalization features, such as 3-tap Transmit Pre-emphasis, Linear Receive Equalization, 6-tap Decision Feedback Equalization, and Integrated AC-coupling capacitor, to enhance signal integrity at all speeds over the most stringent channels, making designs easier to implement the first time.

"We selected the Virtex-4 FX for our digital processing module of the SFI-5 standard-compliant 40Gps WDM optical communications device based on its high performance serial connectivity features," said NEC broadband networks operations unit optical network division manager Nobuhiro Kawahara in a statement. "In addition to allowing us to meet the demanding SFI-5 specification requirements, it permitted us to build in sophisticated functions not possible with other available solutions."

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