| Line 28... |
Line 28... |
--
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--
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-- Remarks: . The unit can handle only one sync at a time. Therfor the
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-- Remarks: . The unit can handle only one sync at a time. Therfor the
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-- sync interval should be larger than the total pipeline
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-- sync interval should be larger than the total pipeline
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-- stages of the wideband fft.
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-- stages of the wideband fft.
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library ieee, common_pkg_lib, common_ram_lib, dp_pkg_lib, rTwoSDF_lib, statistics_lib, mm_lib, dp_requantize_lib;
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library ieee, common_pkg_lib, astron_ram_lib, dp_pkg_lib, astron_r2sdf_fft_lib, astron_statistics_lib, astron_mm_lib, astron_requantize_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_ram_lib.common_ram_pkg.all;
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use astron_ram_lib.common_ram_pkg.all;
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use dp_pkg_lib.dp_stream_pkg.ALL;
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use dp_pkg_lib.dp_stream_pkg.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 statistics_lib.all;
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use astron_statistics_lib.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_wide_unit is
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entity fft_wide_unit is
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generic (
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generic (
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g_fft : t_fft := c_fft; -- generics for the FFT
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g_fft : t_fft := c_fft; -- generics for the FFT
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g_pft_pipeline : t_fft_pipeline := c_fft_pipeline; -- For the pipelined part, defined in rTwoSDF_lib.rTwoSDFPkg
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g_pft_pipeline : t_fft_pipeline := c_fft_pipeline; -- For the pipelined part, defined in astron_r2sdf_fft_lib.rTwoSDFPkg
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g_fft_pipeline : t_fft_pipeline := c_fft_pipeline -- For the parallel part, defined in rTwoSDF_lib.rTwoSDFPkg
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g_fft_pipeline : t_fft_pipeline := c_fft_pipeline -- For the parallel part, 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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dp_rst : in std_logic := '0';
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dp_rst : in std_logic := '0';
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dp_clk : in std_logic;
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dp_clk : in std_logic;
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mm_rst : in std_logic;
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mm_rst : in std_logic;
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| Line 107... |
Line 107... |
-- COMBINE MEMORY MAPPED INTERFACES
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-- COMBINE MEMORY MAPPED INTERFACES
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---------------------------------------------------------------
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---------------------------------------------------------------
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-- Combine the internal array of mm interfaces for the subband
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-- Combine the internal array of mm interfaces for the subband
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-- statistics to one array that is connected to the port of the
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-- statistics to one array that is connected to the port of the
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-- fft_wide_unit.
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-- fft_wide_unit.
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u_mem_mux_sst : entity mm_lib.common_mem_mux
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u_mem_mux_sst : entity astron_mm_lib.common_mem_mux
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generic map (
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generic map (
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g_nof_mosi => g_fft.wb_factor,
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g_nof_mosi => g_fft.wb_factor,
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g_mult_addr_w => ceil_log2(g_fft.stat_data_sz*c_nof_stats)
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g_mult_addr_w => ceil_log2(g_fft.stat_data_sz*c_nof_stats)
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)
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)
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port map (
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port map (
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Line 177... |
-- subband statistics unit is placed.
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-- subband statistics unit is placed.
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-- Since the subband statistics module uses embedded DSP blocks
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-- Since the subband statistics module uses embedded DSP blocks
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-- for multiplication, the incoming data cannot be wider
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-- for multiplication, the incoming data cannot be wider
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-- than 18 bit. Therefor a quantizer is inserted.
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-- than 18 bit. Therefor a quantizer is inserted.
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gen_subband_stats: for I in 0 to g_fft.wb_factor-1 generate
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gen_subband_stats: for I in 0 to g_fft.wb_factor-1 generate
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u_quantizer_for_bst : entity dp_requantize_lib.dp_requantize
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u_quantizer_for_bst : entity astron_requantize_lib.dp_requantize
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GENERIC MAP (
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GENERIC MAP (
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g_complex => TRUE,
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g_complex => TRUE,
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g_representation => "SIGNED",
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g_representation => "SIGNED",
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g_lsb_w => c_lsb_w,
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g_lsb_w => c_lsb_w,
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g_lsb_round => TRUE,
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g_lsb_round => TRUE,
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| Line 199... |
Line 199... |
snk_in => fft_out_sosi_arr(I),
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snk_in => fft_out_sosi_arr(I),
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src_out => sst_in_sosi_arr(I),
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src_out => sst_in_sosi_arr(I),
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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_subband_stats : entity statistics_lib.st_sst
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u_subband_stats : entity astron_statistics_lib.st_sst
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generic map(
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generic map(
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g_nof_stat => c_nof_stats,
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g_nof_stat => c_nof_stats,
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g_in_data_w => g_fft.stage_dat_w,
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g_in_data_w => g_fft.stage_dat_w,
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g_stat_data_w => g_fft.stat_data_w,
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g_stat_data_w => g_fft.stat_data_w,
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g_stat_data_sz => g_fft.stat_data_sz
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g_stat_data_sz => g_fft.stat_data_sz
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