Dynamic Block Reed-Solomon Encoder
http://www.latticesemi.com/products/intellectualproperty/ipcores/dynamicblockreedsolomonen.cfm[10/17/2011 11:33:14 AM]
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Dynamic Block Reed- Solomon Encoder
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See Also
Block Convolutional
Encoder
Block Viterbi Decoder
Dynamic Block Reed-
Solomon Decoder
IP and Reference
Design Forum
Overview
Reed-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
Performance and Resource Utilization
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
Dynamic Block Reed-Solomon Encoder
http://www.latticesemi.com/products/intellectualproperty/ipcores/dynamicblockreedsolomonen.cfm[10/17/2011 11:33:14 AM]
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
Dynamic Block Reed-Solomon Encoder
http://www.latticesemi.com/products/intellectualproperty/ipcores/dynamicblockreedsolomonen.cfm[10/17/2011 11:33:14 AM]
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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
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Purchase: To find out how to purchase the IP Core, please contact your local Lattice Sales Office.
