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AMCC mappers tap FEC technology

Posted: 16 Apr 2004 ?? ?Print Version ?Bookmark and Share

Keywords:fec? forward? error? correction? 10gb?

Applied Micro Circuits Corp. has borrowed the enhanced FEC algorithms of its S3062 family and applied them to three related devices for mapping data services to 10Gb links. The Rubicon family of mappers includes the S4815 Rubicon-48 for 2.5Gb services, the S19231 Rubicon-Metro for metropolitan aggregation and the S19227 Rubicon-Long Haul for long-reach applications.

AMCC had begun initial designs on 40Gb mappers using enhanced FEC, but the project is on hold. "The true 10Gb WAN never really took off," said Neal Neslusan, director of product marketing for transport devices, "but everyone wanted 10GbE services combined with G.709 standards."

The Rubicon devices all support legacy Reed-Solomon FEC, which AMCC calls "generic FEC." All enhanced- and generic-FEC codes are interoperable, so the Rubicon family can be used in the same subnetworks as the company's earlier Niagara FEC devices. The Rubicon parts have six mapping modes for 10Gb, including modes to support the SONET generic framing procedure encapsulation.

AMCC has designed the Rubicon to work with the embedded dispersion-compensation technology in its S3094 and S3394 physical-layer devices. Combining the two will allow long-reach transport with enhanced FEC and embedded dispersion compensation, eliminating the need for signal regeneration. As the long-haul market picks up again, existing effective designs in "supermetro" applications could help bring in new long-haul design wins for both 10Gb and 40Gb networks, Neslusan predicted.

All Rubicon family members will be offered in identical packages, and customized bond options will be available. Samples are shipping now, and production is slated for Q3 2004.

- Loring Wirbel

EE Times

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