Dynamic Block Reed-Solomon Encoder

IP ExpressReed-Solomon codes are used to perform Forward Error Correction (FEC). FEC introduces controlled redundancy in the data before it is transmitted to allow error correction at the receiver. The redundant data (check symbols) are transmitted with the original data to the receiver. A Reed-Solomon Decoder is used in the receiver to correct any transmission errors. This type of error correction is widely used in data communications applications such as Digital Video Broadcast (DVB) and Optical Carriers (i.e. OC-192).

Reed-Solomon codes are written in the format RS(n,k) where k is the number of information symbols and n is the total number of symbols in a codeword or block. Each symbol in the codeword is wsymb bits wide. The first k symbols in the Reed-Solomon Encoder output are information symbols and the last n-k symbols are check symbols. This type of encoder, where the information symbols are unchanged and are followed by check symbols in the output, is called a systematic encoder. The figure below illustrates the operation of a systematic encoder.

Features

  • 3- to 12-bit Symbol Width
  • Configurable Field Polynomial
  • Configurable Generator Polynomial: Starting Root and Root Spacing
  • User-defined Codewords
    • Maximum of 4095 symbols
    • Maximum of 256 check symbols
    • Shortened codes
  • Selectable Reed-Solomon Standards
    • OC-192
    • DVB
    • CCSDS
    • ATSC
    • IEEE 802.16-2004 WirelessMAN-SCa/OFDM
    • IEEE 802.16-2004 WirelessMAN-SC
  • Fully Synchronous
  • Registered Input Selection
  • Systematic Encoder
  • Full Handshaking Capability
  • Dynamically Variable Block Size
  • Dynamically Variable Check Symbols
  • Dynamically Variable Check Symbols Puncturing

Jump to

Block Diagram

Performance and Size

LatticeECP31
IPexpress User-Configurable Mode Slices LUTs Registers sysMEM EBRs I/Os fMAX (MHz)
OC-192 129 251 201 - 24 400
CCSDS 203 398 330 - 24 400
DVB 129 254 201 - 24 400
ATSC 150 293 233 - 24 400
IEEE 802.16-2004 WirelessMAN SCa 172 332 246 - 37 400
IEEE 802.16-2004 WirelessMAN SC 1276 2533 506 - 38 202

1. Performance and utilization data are generated using an LFE3-95E-8FN484CES device with Lattice Diamond 1.0 and Synplify Pro D-2009.12L-1 software. Performance may vary when using a different software version or targeting a different device density or speed grade within the LatticeECP3 family.

LatticeECP2M/S1
IPexpress User-Configurable Mode Slices LUTs Registers sysMEM EBRs I/Os fMAX (MHz)
OC-192 133 262 201 - 24 257
CCSDS 204 404 330 - 24 247
DVB 137 269 201 - 24 286
ATSC 159 315 233 - 24 266
IEEE 802.16-2004 WirelessMAN SCa 173 336 246 - 37 295
IEEE 802.16-2004 WirelessMAN SC 1287 2565 442 - 38 128

1. Performance and utilization data are generated using an LFE2M35E/SE-7F484C device with Lattice Diamond 1.0 and Synplify Pro D-2009.12L-1 software. Performance may vary when using a different software version or targeting a different device density or speed grade within the LatticeECP2M and LatticeECP2MS families.

LatticeECP2/S1
IPexpress User-Configurable Mode Slices LUTs Registers sysMEM EBRs I/Os fMAX (MHz)
OC-192 133 262 201 - 24 320
CCSDS 204 404 330 - 24 250
DVB 137 269 201 - 24 276
ATSC 159 315 233 - 24 282
IEEE 802.16-2004 WirelessMAN SCa 173 336 246 - 37 280
IEEE 802.16-2004 WirelessMAN SC 1287 2565 442 - 38 112

1. Performance and utilization data are generated using an LFE2-50E/SE-7F484C device with Lattice Diamond 1.0 and Synplify Pro D-2009.12L-1 software. Performance may vary when using a different software version or targeting a different device density or speed grade within the LatticeECP2S family.

LatticeEC/P1
IPexpress User-Configurable Mode Slices LUTs Registers sysMEM EBRs I/Os fMAX (MHz)
OC-192 132 260 207 - 24 179
CCSDS 214 426 338 - 24 178
DVB 140 273 210 - 24 174
ATSC 161 320 245 - 24 169
IEEE 802.16-2004 WirelessMAN SCa 168 324 255 - 37 176
IEEE 802.16-2004 WirelessMAN SC 1222 2438 450 - 38 71

1. Performance and utilization data are generated using an LFEC/P20E-5F672C device with Lattice Diamond 1.0 and Synplify Pro D-2009.12L-1 software. Performance may vary when using a different software version or targeting a different device density or speed grade within the LatticeECP/EC family.

LatticeSC/M1
IPexpress User-Configurable Mode Slices LUTs Registers sysMEM EBRs I/Os fMAX (MHz)
OC-192 129 251 201 - 24 400
CCSDS 203 398 330 - 24 400
DVB 129 254 201 - 24 400
ATSC 150 293 233 - 24 400
IEEE 802.16-2004 WirelessMAN SCa 172 332 246 - 37 400
IEEE 802.16-2004 WirelessMAN SC 1276 2533 506 - 38 202

1. Performance and utilization data are generated using an LFSC/M3GA25E-7F900C device with Lattice Diamond 1.0 and Synplify Pro D-2009.12L-1 software. Performance may vary when using a different software version or targeting a different device density or speed grade within the LatticeSCM family.

LatticeXP21
IPexpress User-Configurable Mode Slices LUTs Registers sysMEM EBRs I/Os fMAX (MHz)
OC-192 133 262 201 - 24 291
CCSDS 204 404 330 - 24 264
DVB 137 269 201 - 24 282
ATSC 159 315 233 - 24 278
IEEE 802.16-2004 WirelessMAN SCa 173 336 246 - 37 262
IEEE 802.16-2004 WirelessMAN SC 1287 2565 442 - 38 92

1. Performance and utilization data are generated using an LFXP2-17E-7FT256C device with Lattice Diamond 1.0 and Synplify Pro D-2009.12L-1 software. Performance may vary when using a different software version or targeting a different device density or speed grade within the LatticeXP2 family.

LatticeXP1
IPexpress User-Configurable Mode Slices LUTs Registers sysMEM EBRs I/Os fMAX (MHz)
OC-192 132 260 207 - 24 185
CCSDS 214 426 338 - 24 175
DVB 140 273 210 - 24 183
ATSC 161 320 245 - 24 164
IEEE 802.16-2004 WirelessMAN SCa 168 324 255 - 37 178
IEEE 802.16-2004 WirelessMAN SC 1222 2438 450 - 38 68

1. Performance and utilization data are generated using an LFXP20E-5F256C device with Lattice Diamond 1.0 and Synplify Pro D-2009.12L-1 software. Performance may vary when using a different software version or targeting a different device density or speed grade within the LatticeXP family.

Ordering Information

Family Part Number
LatticeECP3 RSENC-DBLK-E3-U4
LatticeECP2M RSENC-DBLK-PM-U4
LatticeECP2 RSENC-DBLK-P2-U4
LatticeECP/EC RSENC-DBLK-E2-U4
LatticeSC RSENC-DBLK-SC-U4
LatticeXP2 RSENC-DBLK-X2-U4
LatticeXP RSENC-DBLK-XM-U4

IP Version: 4.5.

Evaluate: To download a full evaluation version of this IP, go to the IPexpress tool and click the IP Server button in the toolbar. All LatticeCORE IP cores and modules available for download will be visible. For more information on viewing/downloading IP please read the IP Express Quick Start Guide.

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Documentation

Quick Reference
Information Resources
TITLE NUMBER VERSION DATE FORMAT SIZE
Dynamic Block Reed-Solomon Encoder IP Core User's Guide
IPUG40 03.6 8/13/2010 PDF 851.6 KB
TITLE NUMBER VERSION DATE FORMAT SIZE
Wireless Solutions Brochure
I0197 3.0 8/14/2012 PDF 2 MB
Lattice HetNet Solutions Brochure
I0234 1.0 11/12/2013 PDF 2.2 MB
TITLE NUMBER VERSION DATE FORMAT SIZE
IPexpress Quick Start Guide
8/5/2010 PDF 304.8 KB

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