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| To IP Libraries top | Reed-Solomon Codec Generator    SIR6645 Reed-Solomon Codec Generator To SIGLEAD Inc. Introduction   It is a tool for auto-generation of Reed Solomon encoder/decoder, which is widely used in the Error Correction of HDD, Optical Disc and various communication systems. The generated encoder/decoder achieves continuous encoding/decoding due to pipeline. Given by option, the decoder also supports erasure correction, correctable-symbol number limitation and external RAM free. Features • High-speed encoding /decoding • Parameterizable Number of bits per symbol (m) Number of information symbols (k) Number of correct symbols (t) Generator polynomial    • Support s shortened codes • Decoder features Erasures-supporting option Error correctable -symbol number limitation function option No External RAM option • Fully synchronous design using a single clock • Generates testbench • Output format Verilog RTL Source code Operating System Supported • Microsoft Windows XP Applications • Hard disk drive • Optical disc drive • Communications Interface • Encoder Type   Name   Description Input   ICLK   Clock   IXRST   Asynchronous reset   IDATA0[m-1:0]   Information symbol   IDEN   Information symbol enable   Output   ORDY   Ready to input information symbol   ODATA[m-1:0]   Encoded data   ODEN   Encoded data enable • Decoder Type   Name   Description Input   ICLK   Clock   IXRST   Asynchronous reset   IDATA0[m-1:0]   Coded data   IDEN   Coded data enable   IERS   Erasure position (option)   ILMIT[h01:0]   correctable-symbol number (option)   IRQ[m-1:0]   External RAM read data*   Output   ORDY   Ready to input coded data   ODATA[m-1:0]   Decoded data   ODEN   Decoded data enable   OFAIL   Flag of decoding fail   OERRNUM[h-1:0]   Number of corrected symbols   OEND   Decoding end flag   ORAMWA[a-1:0]   External RAM address*   ORAMWE   External RAM write enable*   ORAMWD[m-1:0]   External RAM write data*   ORAMRA[a-1:0]   External RAM read address*   ORAMRE   External RAM read enable* *Only when external RAM is used • The content of the description might change without a previous notice for the improvement etc. Contact and Ordering Information tdc_se@toppan.co.jp