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| LIBRARY ieee; | |||
| USE ieee.std_logic_1164.ALL; | |||
| USE ieee.numeric_std.ALL; | |||
| USE ieee.std_logic_unsigned.ALL; | |||
| USE ieee.std_logic_signed.ALL; | |||
| USE work.PFB_PKG.ALL; | |||
| PACKAGE FIVEn_DFT_PKG IS | |||
| CONSTANT cst_w_in_5ndft : natural := cst_w_polyfir_out_dft_in_pfb; -- input_bitwidth | |||
| CONSTANT cst_w_out_5ndft : natural := cst_w_out_pfb; -- output bitwidth, must be < 30 | |||
| CONSTANT cst_nb_samples_in_5ndft : natural := cst_nb_subfilters_pfb; -- must be 5*n | |||
| CONSTANT cst_w_precision_winograd5_coeffs_5ndft : natural := cst_w_precision_winograd5_coeffs_pfb; -- must be <= 32 and >= 3, sign bit included. Ideal is >= 8 | |||
| CONSTANT cst_w_precision_radix2_coeffs_5ndft : natural := cst_w_precision_radix2_coeffs_pfb; -- must be <= 32 and >= 3, sign bit included. Ideal is >= 8 | |||
| -- CALCULATIONS -- | |||
| CONSTANT cst_nb_parallel_winograd5 : natural := cst_nb_samples_in_5ndft/5; | |||
| CONSTANT cst_log2_nb_parallel_winograd5 : natural := cst_log2_nb_parallel_winograd_pfb; -- = log2(cst_nb_parallel_winograd5) | |||
| CONSTANT cst_w_winograd_added : natural := cst_w_precision_winograd5_coeffs_5ndft+6; -- 6 is the number of addition stages in the winograd5 blk | |||
| CONSTANT cst_w_radix2_added : natural := cst_w_precision_radix2_coeffs_5ndft+2; | |||
| CONSTANT cst_dft_w_out_5ndft : natural := cst_w_in_5ndft+cst_w_winograd_added+(cst_log2_nb_parallel_winograd5*cst_w_radix2_added); | |||
| CONSTANT cst_winograd5_w_out_5ndft : natural := cst_w_in_5ndft+cst_w_winograd_added; -- 6 is the number of addition stages in the winograd5 blk | |||
| CONSTANT cst_nb_wn_coeffs : natural := cst_nb_samples_in_5ndft/2; | |||
| -- TYPES -- | |||
| SUBTYPE smpl_in_5ndft IS smpl_real_imag_polyfir_out_dft_in_pfb; | |||
| SUBTYPE smpl_out_5ndft IS smpl_real_imag_dft_out_pfb; --std_logic_vector(cst_w_out_5ndft-1 DOWNTO 0); | |||
| TYPE vect_dft_input IS ARRAY (0 TO cst_nb_samples_in_5ndft-1) OF smpl_in_5ndft; | |||
| TYPE vect_dft_output IS ARRAY (0 TO cst_nb_samples_in_5ndft-1) OF smpl_out_5ndft; | |||
| -- winograd5 | |||
| SUBTYPE smpl_out_winograd5_5ndft IS std_logic_vector(cst_winograd5_w_out_5ndft-1 DOWNTO 0); | |||
| SUBTYPE smpl_out_winograd5_signed_5ndft IS signed(cst_winograd5_w_out_5ndft-1 DOWNTO 0); | |||
| TYPE vect_input_winograd5_5ndft IS ARRAY (0 TO 4) OF smpl_in_5ndft; | |||
| TYPE vect_output_winograd5_5ndft IS ARRAY (0 TO 4) OF smpl_out_winograd5_5ndft; | |||
| TYPE vect_total_output_winograd5_cells IS ARRAY (0 TO cst_nb_samples_in_5ndft-1) OF smpl_out_winograd5_5ndft; | |||
| TYPE vect_winograd5_generic_stage IS ARRAY (0 TO 5) OF smpl_out_winograd5_5ndft; | |||
| TYPE matrix_winograd5_generic_stages IS ARRAY (0 TO 7) OF vect_winograd5_generic_stage; | |||
| SUBTYPE smpl_mult_factor_w_multipliers IS std_logic_vector(cst_w_precision_winograd5_coeffs_5ndft-1 DOWNTO 0); | |||
| SUBTYPE smpl_mult_factor_w_multipliers_signed IS signed(cst_w_precision_winograd5_coeffs_5ndft-1 DOWNTO 0); | |||
| TYPE vect_mult_factors_32b IS ARRAY (1 TO 5) OF std_logic_vector(31 DOWNTO 0); | |||
| TYPE vect_mult_factor_w_multipliers IS ARRAY (1 TO 5) OF smpl_mult_factor_w_multipliers; | |||
| --radix2 | |||
| SUBTYPE smpl_cos_sin_wb IS std_logic_vector(cst_w_precision_radix2_coeffs_5ndft-1 DOWNTO 0); | |||
| SUBTYPE smpl_cos_sin_signed_wb IS signed(cst_w_precision_radix2_coeffs_5ndft-1 DOWNTO 0); | |||
| TYPE vect_cos_sin_k_pi_over_5_32b IS ARRAY(0 TO 4) OF std_logic_vector(31 DOWNTO 0); | |||
| TYPE vect_cos_sin_k_pi_over_5_wb IS ARRAY(0 TO 4) OF smpl_cos_sin_wb; | |||
| TYPE vect_cos_sin_k_pi_over_80_32b IS ARRAY (0 TO cst_nb_wn_coeffs-1) OF std_logic_vector(31 DOWNTO 0); | |||
| SUBTYPE smpl_out_radix2 IS std_logic_vector(cst_dft_w_out_5ndft-1 DOWNTO 0); | |||
| SUBTYPE smpl_out_signed_radix2 IS signed(cst_dft_w_out_5ndft-1 DOWNTO 0); | |||
| TYPE vect_radix2_fft_line IS ARRAY (0 TO cst_log2_nb_parallel_winograd5) OF smpl_out_radix2; | |||
| TYPE vect_radix2_line IS ARRAY (0 TO 3) OF smpl_out_radix2; | |||
| TYPE matrix_radix2_cell IS ARRAY (0 TO 1) OF vect_radix2_line; | |||
| -- whole fft | |||
| TYPE matrix_fft_stages IS ARRAY (0 TO cst_nb_samples_in_5ndft-1) OF vect_radix2_fft_line; -- inputs and outputs of radix2 cells | |||
| END; | |||