DVB-S2-X Compliant Decoder Core  
The AHA4709D LDPC/BCH forward error correction (FEC) decoder core is fully compliant with section 5.3 of the Digital Video Broadcast S2-Extention (DVB-S2-X) standard. The core supports all codes, frame sizes, and interleave schemes set forth in the DVB-S2-X specifications for broadcast, interactive, digital satellite news gathering, professional services, and very-low signal-to-noise ratio (VL-SNR) applications. The core allows code and modulation changes on a block-by-block basis to fully support both Adaptive Coding and Modulation (ACM) and Variable Coding and Modulation (VCM).
  •  DVB-S2-X compliant
  • ACM & VCM compliant
  • Supports all original DVB-S2 MODCODs plus all additional DVB-S2-X MODCODs
  • Supports VL-SNR codes
  • 16K, 32K, and 64K block sizes
  • 1 to 8 bits / symbol
  • Max Input Channel rate:  2 bits / clock
  • Max Output Data rate:  1 bit / clock
  • Typical Speed in Stratix V:  275 MHz
  • Typical Resource Usage in Stratix V:  24K ALMs, 254 M20K RAM


  • Complete Documentation
  • Synthesized Netlist
  • Netlist or Encrypted Source for Simulation
  • Bit accurate C / Matlab models
  • Spreadsheet for calculating iterations vs. throughput
Product Briefs

Product Specifications
AHA4709D Specification - DVB-S2-X Compliant LDPC/BCH FEC Decoder Core


Data Compression

Forward Error Correction

Encryption and Hashing

Regular Expression Search

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