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Commit 1d55ba48 authored by Eric Kooistra's avatar Eric Kooistra
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Output raw and quantized subbands. Use quantized subbands for SST.

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1 merge request!289Rename c_sdp_W_fsub_wg into c_sdp_W_local_oscillator. Use...
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applications/lofar2/libraries/sdp/src/vhdl/node_sdp_filterbank.vhd
+ 110
− 53
View file @ 1d55ba48
......@@ -27,15 +27,32 @@
-- Description:
-- . The subband filterbank seperates the incoming timestamped ADC samples into
-- 512 frequency bands called subbands.
-- . It implements a critically sampled poly-phase filterbank (PFB). The PFB consists of a
-- poly-phase finite impulse response (PFIR) filter per real input and a
-- complex fast fourier transform (FFT) per 2 real inputs.
-- . It implements a critically sampled poly-phase filterbank (PFB). The PFB
-- consists of a poly-phase finite impulse response (PFIR) filter per real
-- input and a complex fast fourier transform (FFT) per 2 real inputs.
-- . The number of points of the FFT is 1024.
--
-- . Subband widths:
-- - raw_sosi : c_subband_raw_dat_w bits
-- - quant_sosi : c_subband_quant_dat_w = c_sdp_W_subband bits
-- The quantized subbands are output and used for the SST.
-- The raw subbands are weighted by the equalizer and are output to allow
-- further weighting by the beamformer weights (in the BF) or to allow
-- different rounding (to c_sdp_W_crosslet bits in the XSub).
-- ____ __
-- | | | |
-- | |--raw---->|EQ|--raw----------------------------> fsub_raw_sosi_arr
-- |WPFB| | |--quant--+-----------------------> fsub_quant_sosi_arr
-- | | |__| | ___ ___
-- | | \-->| | | |
-- | |--quant------------------->|sel|---->|SST|
-- |____| |___| |___|
--
-- Remark:
-- .
--
-------------------------------------------------------------------------------
LIBRARY IEEE, common_lib, dp_lib, rTwoSDF_lib, wpfb_lib, filter_lib, si_lib, st_lib, mm_lib;
LIBRARY IEEE, common_lib, dp_lib, rTwoSDF_lib, fft_lib, wpfb_lib, filter_lib, si_lib, st_lib, mm_lib;
USE IEEE.STD_LOGIC_1164.ALL;
USE common_lib.common_pkg.ALL;
USE common_lib.common_mem_pkg.ALL;
......@@ -43,6 +60,7 @@ USE common_lib.common_network_layers_pkg.ALL;
USE dp_lib.dp_stream_pkg.ALL;
USE rTwoSDF_lib.rTwoSDFPkg.ALL;
USE filter_lib.fil_pkg.ALL;
USE fft_lib.fft_pkg.ALL;
USE wpfb_lib.wpfb_pkg.ALL;
USE work.sdp_pkg.ALL;
......@@ -60,9 +78,9 @@ ENTITY node_sdp_filterbank IS
dp_bsn_source_restart : IN STD_LOGIC;
dp_bsn_source_new_interval : IN STD_LOGIC;
in_sosi_arr : IN t_dp_sosi_arr(c_sdp_S_pn-1 DOWNTO 0);
pfb_sosi_arr : OUT t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0);
fsub_sosi_arr : OUT t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0);
in_sosi_arr : IN t_dp_sosi_arr(c_sdp_S_pn-1 DOWNTO 0); -- c_sdp_W_adc bits
fsub_quant_sosi_arr: OUT t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0); -- c_sdp_W_subband bits
fsub_raw_sosi_arr : OUT t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0); -- c_sdp_W_subband + c_subband_raw_fraction_w bits
sst_udp_sosi : OUT t_dp_sosi;
sst_udp_siso : IN t_dp_siso := c_dp_siso_rst;
......@@ -102,7 +120,12 @@ ARCHITECTURE str OF node_sdp_filterbank IS
CONSTANT c_subband_equalizer_latency : NATURAL := 5;
CONSTANT c_nof_masters : POSITIVE := 2;
CONSTANT c_nof_masters : POSITIVE := 2; -- for M&C MM access and for statistics offload MM access
CONSTANT c_fft : t_fft := func_wpfb_map_wpfb_parameters_to_fft(g_wpfb);
CONSTANT c_subband_raw_dat_w : NATURAL := func_fft_raw_dat_w(c_fft);
CONSTANT c_subband_raw_fraction_w : NATURAL := func_fft_raw_fraction_w(c_fft);
CONSTANT c_subband_quant_dat_w : NATURAL := c_subband_raw_dat_w - c_subband_raw_fraction_w;
CONSTANT c_si_pipeline : NATURAL := 1;
......@@ -119,19 +142,35 @@ ARCHITECTURE str OF node_sdp_filterbank IS
SIGNAL master_miso_arr : t_mem_miso_arr(0 TO c_nof_masters-1) := (OTHERS=>c_mem_miso_rst);
SIGNAL si_sosi_arr : t_dp_sosi_arr(c_sdp_S_pn-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL wpfb_unit_in_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL wpfb_unit_fil_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL wpfb_unit_out_quant_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL wpfb_unit_out_raw_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL subband_equalizer_out_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL dp_selector_out_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL scope_sosi_arr : t_dp_sosi_integer_arr(c_sdp_S_pn-1 DOWNTO 0);
SIGNAL wpfb_unit_out_quant_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL subband_equalizer_raw_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL subband_equalizer_quant_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL scope_wpfb_unit_out_quant_sosi_arr : t_dp_sosi_integer_arr(c_sdp_S_pn-1 DOWNTO 0);
SIGNAL scope_equalizer_quant_sosi_arr : t_dp_sosi_integer_arr(c_sdp_S_pn-1 DOWNTO 0);
SIGNAL dp_selector_quant_sosi_arr : t_dp_sosi_arr(c_sdp_P_pfb-1 DOWNTO 0) := (OTHERS => c_dp_sosi_rst);
SIGNAL selector_en : STD_LOGIC;
SIGNAL weighted_subbands_flag : STD_LOGIC;
SIGNAL dp_bsn_source_restart_pipe : STD_LOGIC;
-- debug signals to view parameters in Wave Window
signal dbg_g_wpfb : t_wpfb := g_wpfb;
signal dbg_c_subband_raw_dat_w : natural := c_subband_raw_dat_w;
signal dbg_c_subband_raw_fraction_w : natural := c_subband_raw_fraction_w;
signal dbg_c_subband_quant_dat_w : natural := c_subband_quant_dat_w;
BEGIN
ASSERT c_subband_quant_dat_w = c_sdp_W_subband REPORT "FSub: Quantized subband width mismatch." SEVERITY FAILURE;
---------------------------------------------------------------
-- SPECTRAL INVERSION
---------------------------------------------------------------
......@@ -206,22 +245,22 @@ BEGIN
dp_bsn_source_restart => dp_bsn_source_restart_pipe
);
-- Output PFB streams
pfb_sosi_arr <= wpfb_unit_out_quant_sosi_arr;
---------------------------------------------------------------
-- SUBBAND EQUALIZER
---------------------------------------------------------------
u_sdp_subband_equalizer : ENTITY work.sdp_subband_equalizer
GENERIC MAP (
g_gains_file_name => c_gains_file_name
g_gains_file_name => c_gains_file_name,
g_raw_dat_w => c_subband_raw_dat_w,
g_raw_fraction_w => c_subband_raw_fraction_w
)
PORT MAP(
dp_clk => dp_clk,
dp_rst => dp_rst,
in_sosi_arr => wpfb_unit_out_quant_sosi_arr,
out_sosi_arr => subband_equalizer_out_sosi_arr,
in_raw_sosi_arr => wpfb_unit_out_raw_sosi_arr,
out_raw_sosi_arr => subband_equalizer_raw_sosi_arr,
out_quant_sosi_arr => subband_equalizer_quant_sosi_arr,
mm_rst => mm_rst,
mm_clk => mm_clk,
......@@ -231,10 +270,11 @@ BEGIN
);
-- Output fsub streams
fsub_sosi_arr <= subband_equalizer_out_sosi_arr;
fsub_quant_sosi_arr <= subband_equalizer_quant_sosi_arr;
fsub_raw_sosi_arr <= subband_equalizer_raw_sosi_arr;
---------------------------------------------------------------
-- DP SELECTOR
-- DP SELECTOR for SST input
---------------------------------------------------------------
u_dp_selector_arr : ENTITY dp_lib.dp_selector_arr
GENERIC MAP (
......@@ -251,12 +291,47 @@ BEGIN
reg_selector_miso => reg_selector_miso,
pipe_sosi_arr => wpfb_unit_out_quant_sosi_arr,
ref_sosi_arr => subband_equalizer_out_sosi_arr,
out_sosi_arr => dp_selector_out_sosi_arr,
ref_sosi_arr => subband_equalizer_quant_sosi_arr,
out_sosi_arr => dp_selector_quant_sosi_arr,
selector_en => selector_en
);
---------------------------------------------------------------
-- SIGNAL SCOPE
---------------------------------------------------------------
-- synthesis translate_off
u_sdp_scope_wpfb : ENTITY work.sdp_scope
GENERIC MAP (
g_sim => g_sim,
g_selection => g_scope_selected_subband,
g_nof_input => c_sdp_P_pfb,
g_n_deinterleave => c_sdp_Q_fft,
g_dat_w => c_sdp_W_subband
)
PORT MAP (
clk => dp_clk,
rst => dp_rst,
sp_sosi_arr => wpfb_unit_out_quant_sosi_arr,
scope_sosi_arr => scope_wpfb_unit_out_quant_sosi_arr
);
u_sdp_scope_equalizer : ENTITY work.sdp_scope
GENERIC MAP (
g_sim => g_sim,
g_selection => g_scope_selected_subband,
g_nof_input => c_sdp_P_pfb,
g_n_deinterleave => c_sdp_Q_fft,
g_dat_w => c_sdp_W_subband
)
PORT MAP (
clk => dp_clk,
rst => dp_rst,
sp_sosi_arr => subband_equalizer_quant_sosi_arr,
scope_sosi_arr => scope_equalizer_quant_sosi_arr
);
-- synthesis translate_on
---------------------------------------------------------------
-- SUBBAND STATISTICS
---------------------------------------------------------------
......@@ -274,7 +349,7 @@ BEGIN
mm_clk => mm_clk,
dp_rst => dp_rst,
dp_clk => dp_clk,
in_complex => dp_selector_out_sosi_arr(I),
in_complex => dp_selector_quant_sosi_arr(I),
ram_st_sst_mosi => ram_st_sst_mosi_arr(I),
ram_st_sst_miso => ram_st_sst_miso_arr(I)
);
......@@ -317,28 +392,10 @@ BEGIN
mux_miso => master_mem_mux_miso
);
---------------------------------------------------------------
-- SIGNAL SCOPE
---------------------------------------------------------------
u_sdp_scope : ENTITY work.sdp_scope
GENERIC MAP (
g_sim => g_sim,
g_selection => g_scope_selected_subband,
g_nof_input => c_sdp_P_pfb,
g_n_deinterleave => c_sdp_Q_fft,
g_dat_w => c_sdp_W_subband
)
PORT MAP (
clk => dp_clk,
rst => dp_rst,
sp_sosi_arr => subband_equalizer_out_sosi_arr,
scope_sosi_arr => scope_sosi_arr
);
---------------------------------------------------------------
-- STATISTICS OFFLOAD
---------------------------------------------------------------
weighted_subbands_flag <= NOT selector_en;
weighted_subbands_flag <= NOT selector_en WHEN rising_edge(dp_clk);
u_sdp_sst_udp_offload: ENTITY work.sdp_statistics_offload
GENERIC MAP (
......@@ -364,7 +421,7 @@ BEGIN
reg_bsn_monitor_v2_offload_copi => reg_bsn_monitor_v2_sst_offload_copi,
reg_bsn_monitor_v2_offload_cipo => reg_bsn_monitor_v2_sst_offload_cipo,
in_sosi => dp_selector_out_sosi_arr(0),
in_sosi => dp_selector_quant_sosi_arr(0),
new_interval => dp_bsn_source_new_interval,
out_sosi => sst_udp_sosi,
......
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