data_mode=width_64, mode=fft, input_mode=riri, point=p512
FFT control register
| point | FFT calculation data length 0 (p512): 512 point 1 (p256): 256 point 2 (p128): 128 point 3 (p64): 64 point |
| mode | FFT mode 0 (fft): FFT mode 1 (ifft): Inverse FFT mode |
| shift | Corresponding to the nine layer butterfly shift operation, 0x0: does not shift; 0x1: shift 1st layer. … |
| enable | FFT enable |
| dma_send | FFT DMA enable |
| input_mode | Input data arrangement 0 (riri): RIRI (real imaginary interleaved) 1 (rrrr): RRRR (only real part) 2 (rrii): First input the real part and then input the imaginary part |
| data_mode | Effective width of input data 0 (width_64): 64 bit effective 1 (width_128): 128 bit effective |