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--
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--
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--
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--
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-- Remarks:
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-- Remarks:
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--
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--
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|
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library ieee, common_pkg_lib, common_components_lib, common_requantize_lib, rTwoSDF_lib;
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library ieee, common_pkg_lib, common_components_lib, astron_requantize_lib, astron_r2sdf_fft_lib;
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use IEEE.std_logic_1164.all;
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use IEEE.std_logic_1164.all;
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use common_pkg_lib.common_pkg.all;
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use common_pkg_lib.common_pkg.all;
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use common_pkg_lib.common_str_pkg.all;
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use common_pkg_lib.common_str_pkg.all;
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use rTwoSDF_lib.twiddlesPkg.all;
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use astron_r2sdf_fft_lib.twiddlesPkg.all;
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use rTwoSDF_lib.rTwoSDFPkg.all;
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use astron_r2sdf_fft_lib.rTwoSDFPkg.all;
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use work.fft_pkg.all;
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use work.fft_pkg.all;
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entity fft_r2_bf_par is
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entity fft_r2_bf_par is
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generic (
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generic (
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g_stage : natural := 3;
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g_stage : natural := 3;
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g_element : natural := 1;
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g_element : natural := 1;
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g_scale_enable : boolean := TRUE;
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g_scale_enable : boolean := TRUE;
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-- internal pipeline settings
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-- internal pipeline settings
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g_pipeline : t_fft_pipeline := c_fft_pipeline -- defined in rTwoSDF_lib.rTwoSDFPkg
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g_pipeline : t_fft_pipeline := c_fft_pipeline -- defined in astron_r2sdf_fft_lib.rTwoSDFPkg
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);
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);
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port (
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port (
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clk : in std_logic;
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clk : in std_logic;
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rst : in std_logic;
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rst : in std_logic;
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x_in_re : in std_logic_vector;
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x_in_re : in std_logic_vector;
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Line 100... |
begin
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begin
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- complex butterfly
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-- complex butterfly
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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u_bf_re : entity rTwoSDF_lib.rTwoBF
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u_bf_re : entity astron_r2sdf_fft_lib.rTwoBF
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generic map (
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generic map (
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g_in_a_zdly => c_bf_in_a_zdly,
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g_in_a_zdly => c_bf_in_a_zdly,
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g_out_d_zdly => c_bf_out_b_zdly
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g_out_d_zdly => c_bf_out_b_zdly
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)
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)
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port map (
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port map (
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in_val => in_val,
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in_val => in_val,
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out_c => sum_re,
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out_c => sum_re,
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out_d => dif_re
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out_d => dif_re
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);
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);
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u_bf_im : entity rTwoSDF_lib.rTwoBF
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u_bf_im : entity astron_r2sdf_fft_lib.rTwoBF
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generic map (
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generic map (
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g_in_a_zdly => c_bf_in_a_zdly,
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g_in_a_zdly => c_bf_in_a_zdly,
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g_out_d_zdly => c_bf_out_b_zdly
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g_out_d_zdly => c_bf_out_b_zdly
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)
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)
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port map (
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port map (
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);
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);
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- requantize x output
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-- requantize x output
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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u_requantize_x_re : entity common_requantize_lib.common_requantize
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u_requantize_x_re : entity astron_requantize_lib.common_requantize
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generic map (
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generic map (
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g_representation => "SIGNED",
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g_representation => "SIGNED",
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g_lsb_w => c_stage_bit_growth,
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g_lsb_w => c_stage_bit_growth,
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g_lsb_round => TRUE,
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g_lsb_round => TRUE,
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g_lsb_round_clip => FALSE,
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g_lsb_round_clip => FALSE,
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in_dat => sum_re,
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in_dat => sum_re,
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out_dat => sum_quant_re,
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out_dat => sum_quant_re,
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out_ovr => open
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out_ovr => open
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);
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);
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u_requantize_x_im : entity common_requantize_lib.common_requantize
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u_requantize_x_im : entity astron_requantize_lib.common_requantize
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generic map (
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generic map (
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g_representation => "SIGNED",
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g_representation => "SIGNED",
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g_lsb_w => c_stage_bit_growth,
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g_lsb_w => c_stage_bit_growth,
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g_lsb_round => TRUE,
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g_lsb_round => TRUE,
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g_lsb_round_clip => FALSE,
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g_lsb_round_clip => FALSE,
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);
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);
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- twiddle multiplication
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-- twiddle multiplication
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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u_TwiddleMult: entity rTwoSDF_lib.rTwoWMul
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u_TwiddleMult: entity astron_r2sdf_fft_lib.rTwoWMul
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generic map (
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generic map (
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g_stage => g_stage,
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g_stage => g_stage,
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g_lat => g_pipeline.mul_lat
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g_lat => g_pipeline.mul_lat
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)
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)
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port map (
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port map (
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print_str("Parallel: [stage = " & integer'image(g_stage) & " [element = " & integer'image(g_element) & "] " & "[index = " & integer'image(wMap(g_element, g_stage)) & "] " );
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print_str("Parallel: [stage = " & integer'image(g_stage) & " [element = " & integer'image(g_element) & "] " & "[index = " & integer'image(wMap(g_element, g_stage)) & "] " );
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- requantize y output
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-- requantize y output
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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u_requantize_y_re : entity common_requantize_lib.common_requantize
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u_requantize_y_re : entity astron_requantize_lib.common_requantize
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generic map (
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generic map (
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g_representation => "SIGNED",
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g_representation => "SIGNED",
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g_lsb_w => c_stage_bit_growth,
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g_lsb_w => c_stage_bit_growth,
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g_lsb_round => TRUE,
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g_lsb_round => TRUE,
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g_lsb_round_clip => FALSE,
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g_lsb_round_clip => FALSE,
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in_dat => mul_out_re,
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in_dat => mul_out_re,
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out_dat => mul_quant_re,
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out_dat => mul_quant_re,
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out_ovr => open
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out_ovr => open
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);
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);
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u_requantize_y_im : entity common_requantize_lib.common_requantize
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u_requantize_y_im : entity astron_requantize_lib.common_requantize
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generic map (
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generic map (
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g_representation => "SIGNED",
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g_representation => "SIGNED",
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g_lsb_w => c_stage_bit_growth,
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g_lsb_w => c_stage_bit_growth,
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g_lsb_round => TRUE,
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g_lsb_round => TRUE,
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g_lsb_round_clip => FALSE,
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g_lsb_round_clip => FALSE,
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