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10GBASE-LRM IC ups backbone coverage by 20%

Posted: 27 Sep 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Applied Micro? QT2025? 10GBASE-LRM? PHY IC? FDDI?

Applied Micro Circuits Corp. is sampling a highly integrated 10GBASE-LRM physical layer IC (PHY) dubbed the QT2025 that brings high-speed transmission to 300m FDDI-grade fiber.

The 10GBASE-LRM standard targets the large base of installed multimode fiber (MMF) in corporate backbones and provides a cost-effective way to convert these links from speeds as low as 100Mbps to 10Gbps operation.

More than 90 percent of installed fiber in enterprise backbones is legacy MMF. While the IEEE802.3aq 10GBase-LRM standard specifies 220m as the target fiber length, the QT2025 is designed to operate over 300m of FDDI-grade fiber, which increases the backbone coverage by close to 20 percent, according to the company.

The QT2025 integrates 10Gbps serial-to-XAUI Ethernet processing with high-performance electronic dispersion compensation (EDC). The EDC engine's architecture optimizes the link performance to different fiber impulse responses and adapts to modal changes in the fiber. The PHY can be field upgraded via a built-in microprocessor in order to support standards changes, new standards or to optimize performance.

The QT2025 is sampling today. Pricing is $65 each in typical volumes.

- Ismini Scouras

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