DSP Builder for Intel® FPGAs (Advanced Blockset): Handbook

ID 683337
Date 5/01/2023

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15.3.11. Fully-Parallel FFTs (FFT2P, FFT4P, FFT8P, FFT16P, FFT32P, and FFT64P)

The FFT2P, FFT4P, FFT8P, FFT16P, FFT32P, and FFT64P blocks implement fully-parallel FFTs for 2, 4, 8, 16, 32, and 64 points respectively.

The blocks expect bit-reversed input and produce natural-order output.

Not all parameters are available with all blocks.

Table 116.  Parameters for the FFT2P Blocks
Parameter Description
Twiddle/pruning specification(  
Use faithful rounding True if the block uses faithful (rather than correct) rounding for floating-point operations. Fixed-point FFTs ignore this parameter.
Table 117.  Port Interface for the FFT2P Blocks
Signal Direction Type Description
d Input Any complex. Complex data input signal.
q Output Determined by pruning specification. Complex data output signal.