Reed Solomon FEC Codec

The Reed Solomon Forward Error Correction (RSFEC) Codec provides the necessary functionality to enable FEC encoding and decoding in a single core. The high performance architecture of the core results in a low latency and low gate count implementation, enabling low power, scaleable solutions for data rates up to and in excess of 40Gbps. The core is adaptable to fit a wide range of applications, such as Digital Wrapper and SONET framers.

Block Diagram

Features

• Fully compatible with other Jennic Sliced Protocol Architecture (SPA) IP blocks
• Configurable for use in a wide range of high speed FEC applications.
• STS-48 OOB FEC SONET Framer
  • STS-192 OOB FEC SONET framer
  • STS-192/Quad STS-48 OOB FEC SONET Framer
  • OTU-1, OTU-2 and OTU-3 Digital Wrapper
• Reed Solomon (n,k) FEC Codecs
  • RS(255,239) support for G.975/G.709 compliance
  • Intended for applications using interleaved codes
• Error monitoring:
  • Corrected bit error count
  • Corrected byte count
  • Uncorrected code block indication
• Existing implementations in 0.18µ for STS-48, STS-192 and STS-768.