This is a tool for auto-generation of Reed-Solomon encoder/decoder, which is widely used in the error correction of various storage and communication systems. Using this tool, RTL for our IP (Si2520) can be generated.
With Si2520-T, one can flexibly generate various RTLs by different Reed-Solomon parameters, switch on/off erasure correction, external RAM and limitation of number of correctable symbols. This will strongly facilitate such works as optimization of Reed-Solomon parameters for customers.
Features
・ RTL generation corresponding to our IP (Si2520)
・ High-speed encoding/decoding
・ Support shortened codes
・ Number of bits per symbol (m) : 3 to 12 bits
・ Number of symbols in a codeword (n) : 3 to 2m-1 symbols
・ Number of information symbols (k) : 1 to 2m-3 symbols
・ Number of correctable symbols (t) : 1 to 2m-1-1 symbols
・ Primitive polynomial configurable
・ Generator polynomial configurable
・ Support erasure correction
・ No external RAM option
・ Available limitation of number of correctable symbols
・ Support continuous encoding / decoding due to pipeline
(except the case of n<4t+2)
・ Fully synchronous design using a single clock
・ ASIC friendly design
・ Generate test bench and test pattern
- Output format : Verilog-RTL source code
Operating System Supported
Windows XP / Vista / 7
Interface
Encoder
Input
| Name | Description |
|---|---|
| ICLK | Clock |
| IXRST | Asynchronous reset |
| IDATA[m-1:0] | Information symbol |
| IDEN | Information symbol enable |
Output
| Name | Description |
|---|---|
| ORDY | Ready to input information symbol |
| ODATA[m-1:0] | Code symbol |
| ODEN | Code symbol enable |
Decoder
Input
| Name | Description |
|---|---|
| ICLK | Clock |
| IXRST | Asynchronous reset |
| IDATA[m-1:0] | Code symbol |
| IDEN | Code symbol enable |
| IERS | Erasure position (*1) |
| ILMT[h-1:0] | Correctable symbol limitation (*3) |
| IRAMRD[m-1:0] | External RAM read data (*2) |
*1 : Only when erasure correction is used
*2 : Only when external RAM is used
*3 : Only when correctable symbol limitation is used
Output
| Name | Description |
|---|---|
| ORDY | Ready to input code symbol |
| ODATA[m-1:0] | Decoded symbol |
| ODEN | Decoded symbol enable |
| OFAIL | Decoding fail flag |
| OERRNUM[h-1:0] | Number of corrected symbols |
| OEND | Decoding end flag |
| ORAMWA[a-1:0] | External RAM write address (*2) |
| ORAMWE | External RAM write enable (*2) |
| ORAMWD[m-1:0] | External RAM write data (*2) |
| ORAMRA[a-1:0] | External RAM read address (*2) |
| ORAMRE | External RAM read enable (*2) |
Applications
- Communications (support various standards with RS code)
- Hard disk drive(HDD), Optical disc drive(ODD), Solid state drive(SSD)
For more information/customization on Reed-Solomon codec generator, please contact us.
* The content might change without a previous notice due to the improvement.