• 256 -point radix-8 FFT. • Forward and inverse FFT. • Pipelined mode operation, each result is outputted in one clock cycle, the latent delay from input to output is equal to 580 clock cycles (839 clock cycles when the direct output data order), simultaneous loading/downloading supported. • Input data, output data, and coefficient widths are parametrizable in range 8 to 16 and more. • Two and three data buffers are selected. • FFT for 10 bit data and coefficient width is calculated on Xilinx XC4SX25-12 FPGA at 250 MHz clock cycle, and on Xilinx XC5SX25-12 FPGA at 300 MHz clock cycle, respectively. • FFT unit for 10 bit data and coefficients, and 2 data buffers occupies 1652 CLB slices, 4 DSP48 blocks, and 2,5 kbit of RAM in Xilinx XC4SX25 FPGA, and 670 CLB slices 4 DSP48E blocks, and 2,5 kbit of RAM in Xilinx XC5SX25 FPGA, data buffers are implemented on the distributed RAM.

03091291256fft.rar

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