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lpp_top_acq.vhd
304 lines | 10.8 KiB | text/x-vhdl | VhdlLexer
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LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
LIBRARY lpp;
USE lpp.lpp_ad_conv.ALL;
USE lpp.iir_filter.ALL;
USE lpp.FILTERcfg.ALL;
USE lpp.lpp_memory.ALL;
USE lpp.lpp_top_lfr_pkg.ALL;
LIBRARY techmap;
USE techmap.gencomp.ALL;
ENTITY lpp_top_acq IS
GENERIC(
tech : INTEGER := 0;
Mem_use : integer := use_RAM
);
PORT (
-- ADS7886
cnv_run : IN STD_LOGIC;
cnv : OUT STD_LOGIC;
sck : OUT STD_LOGIC;
sdo : IN STD_LOGIC_VECTOR(7 DOWNTO 0);
--
cnv_clk : IN STD_LOGIC; -- 49 MHz
cnv_rstn : IN STD_LOGIC;
--
clk : IN STD_LOGIC; -- 25 MHz
rstn : IN STD_LOGIC;
--
sample_f0_wen : OUT STD_LOGIC_VECTOR(4 DOWNTO 0);
sample_f0_wdata : OUT STD_LOGIC_VECTOR((5*16)-1 DOWNTO 0);
--
sample_f1_wen : OUT STD_LOGIC_VECTOR(4 DOWNTO 0);
sample_f1_wdata : OUT STD_LOGIC_VECTOR((5*16)-1 DOWNTO 0);
--
sample_f2_wen : OUT STD_LOGIC_VECTOR(4 DOWNTO 0);
sample_f2_wdata : OUT STD_LOGIC_VECTOR((5*16)-1 DOWNTO 0);
--
sample_f3_wen : OUT STD_LOGIC_VECTOR(4 DOWNTO 0);
sample_f3_wdata : OUT STD_LOGIC_VECTOR((5*16)-1 DOWNTO 0)
);
END lpp_top_acq;
ARCHITECTURE tb OF lpp_top_acq IS
COMPONENT Downsampling
GENERIC (
ChanelCount : INTEGER;
SampleSize : INTEGER;
DivideParam : INTEGER);
PORT (
clk : IN STD_LOGIC;
rstn : IN STD_LOGIC;
sample_in_val : IN STD_LOGIC;
sample_in : IN samplT(ChanelCount-1 DOWNTO 0, SampleSize-1 DOWNTO 0);
sample_out_val : OUT STD_LOGIC;
sample_out : OUT samplT(ChanelCount-1 DOWNTO 0, SampleSize-1 DOWNTO 0));
END COMPONENT;
-----------------------------------------------------------------------------
CONSTANT ChanelCount : INTEGER := 8;
CONSTANT ncycle_cnv_high : INTEGER := 79;
CONSTANT ncycle_cnv : INTEGER := 500;
-----------------------------------------------------------------------------
SIGNAL sample : Samples(ChanelCount-1 DOWNTO 0);
SIGNAL sample_val : STD_LOGIC;
SIGNAL sample_val_delay : STD_LOGIC;
-----------------------------------------------------------------------------
CONSTANT Coef_SZ : INTEGER := 9;
CONSTANT CoefCntPerCel : INTEGER := 6;
CONSTANT CoefPerCel : INTEGER := 5;
CONSTANT Cels_count : INTEGER := 5;
SIGNAL coefs_v2 : STD_LOGIC_VECTOR((Coef_SZ*CoefPerCel*Cels_count)-1 DOWNTO 0);
SIGNAL sample_filter_in : samplT(ChanelCount-1 DOWNTO 0, 17 DOWNTO 0);
--
SIGNAL sample_filter_v2_out_val : STD_LOGIC;
SIGNAL sample_filter_v2_out : samplT(ChanelCount-1 DOWNTO 0, 17 DOWNTO 0);
--
SIGNAL sample_filter_v2_out_r_val : STD_LOGIC;
SIGNAL sample_filter_v2_out_r : samplT(ChanelCount-1 DOWNTO 0, 17 DOWNTO 0);
-----------------------------------------------------------------------------
SIGNAL downsampling_cnt : STD_LOGIC_VECTOR(1 DOWNTO 0);
SIGNAL sample_downsampling_out_val : STD_LOGIC;
SIGNAL sample_downsampling_out : samplT(ChanelCount-1 DOWNTO 0, 17 DOWNTO 0);
--
SIGNAL sample_f0_val : STD_LOGIC;
SIGNAL sample_f0 : samplT(ChanelCount-1 DOWNTO 0, 17 DOWNTO 0);
-----------------------------------------------------------------------------
SIGNAL sample_f1_val : STD_LOGIC;
SIGNAL sample_f1 : samplT(ChanelCount-1 DOWNTO 0, 17 DOWNTO 0);
--
SIGNAL sample_f2_val : STD_LOGIC;
SIGNAL sample_f2 : samplT(ChanelCount-1 DOWNTO 0, 17 DOWNTO 0);
--
SIGNAL sample_f3_val : STD_LOGIC;
SIGNAL sample_f3 : samplT(ChanelCount-1 DOWNTO 0, 17 DOWNTO 0);
BEGIN
-- component instantiation
-----------------------------------------------------------------------------
DIGITAL_acquisition : AD7688_drvr
GENERIC MAP (
ChanelCount => ChanelCount,
ncycle_cnv_high => ncycle_cnv_high,
ncycle_cnv => ncycle_cnv)
PORT MAP (
cnv_clk => cnv_clk, --
cnv_rstn => cnv_rstn, --
cnv_run => cnv_run, --
cnv => cnv, --
clk => clk, --
rstn => rstn, --
sck => sck, --
sdo => sdo(ChanelCount-1 DOWNTO 0), --
sample => sample,
sample_val => sample_val);
-----------------------------------------------------------------------------
PROCESS (clk, rstn)
BEGIN -- PROCESS
IF rstn = '0' THEN -- asynchronous reset (active low)
sample_val_delay <= '0';
ELSIF clk'EVENT AND clk = '1' THEN -- rising clock edge
sample_val_delay <= sample_val;
END IF;
END PROCESS;
-----------------------------------------------------------------------------
ChanelLoop : FOR i IN 0 TO ChanelCount-1 GENERATE
SampleLoop : FOR j IN 0 TO 15 GENERATE
sample_filter_in(i, j) <= sample(i)(j);
END GENERATE;
sample_filter_in(i, 16) <= sample(i)(15);
sample_filter_in(i, 17) <= sample(i)(15);
END GENERATE;
coefs_v2 <= CoefsInitValCst_v2;
IIR_CEL_CTRLR_v2_1 : IIR_CEL_CTRLR_v2
GENERIC MAP (
tech => 0,
Mem_use => Mem_use,
Sample_SZ => 18,
Coef_SZ => Coef_SZ,
Coef_Nb => 25, -- TODO
Coef_sel_SZ => 5, -- TODO
Cels_count => Cels_count,
ChanelsCount => ChanelCount)
PORT MAP (
rstn => rstn,
clk => clk,
virg_pos => 7,
coefs => coefs_v2,
sample_in_val => sample_val_delay,
sample_in => sample_filter_in,
sample_out_val => sample_filter_v2_out_val,
sample_out => sample_filter_v2_out);
-----------------------------------------------------------------------------
PROCESS (clk, rstn)
BEGIN -- PROCESS
IF rstn = '0' THEN -- asynchronous reset (active low)
sample_filter_v2_out_r_val <= '0';
rst_all_chanel : FOR I IN ChanelCount-1 DOWNTO 0 LOOP
rst_all_bits : FOR J IN 17 DOWNTO 0 LOOP
sample_filter_v2_out_r(I, J) <= '0';
END LOOP rst_all_bits;
END LOOP rst_all_chanel;
ELSIF clk'EVENT AND clk = '1' THEN -- rising clock edge
sample_filter_v2_out_r_val <= sample_filter_v2_out_val;
IF sample_filter_v2_out_val = '1' THEN
sample_filter_v2_out_r <= sample_filter_v2_out;
END IF;
END IF;
END PROCESS;
-----------------------------------------------------------------------------
-- F0 -- @24.576 kHz
-----------------------------------------------------------------------------
Downsampling_f0 : Downsampling
GENERIC MAP (
ChanelCount => ChanelCount,
SampleSize => 18,
DivideParam => 4)
PORT MAP (
clk => clk,
rstn => rstn,
sample_in_val => sample_filter_v2_out_val ,
sample_in => sample_filter_v2_out,
sample_out_val => sample_f0_val,
sample_out => sample_f0);
all_bit_sample_f0 : FOR I IN 15 DOWNTO 0 GENERATE
sample_f0_wdata(I) <= sample_f0(0, I);
sample_f0_wdata(16*1+I) <= sample_f0(1, I);
sample_f0_wdata(16*2+I) <= sample_f0(2, I);
sample_f0_wdata(16*3+I) <= sample_f0(6, I);
sample_f0_wdata(16*4+I) <= sample_f0(7, I);
END GENERATE all_bit_sample_f0;
sample_f0_wen <= NOT(sample_f0_val) &
NOT(sample_f0_val) &
NOT(sample_f0_val) &
NOT(sample_f0_val) &
NOT(sample_f0_val);
-----------------------------------------------------------------------------
-- F1 -- @4096 Hz
-----------------------------------------------------------------------------
Downsampling_f1 : Downsampling
GENERIC MAP (
ChanelCount => ChanelCount,
SampleSize => 18,
DivideParam => 6)
PORT MAP (
clk => clk,
rstn => rstn,
sample_in_val => sample_f0_val ,
sample_in => sample_f0,
sample_out_val => sample_f1_val,
sample_out => sample_f1);
sample_f1_wen <= NOT(sample_f1_val) &
NOT(sample_f1_val) &
NOT(sample_f1_val) &
NOT(sample_f1_val) &
NOT(sample_f1_val);
all_bit_sample_f1 : FOR I IN 15 DOWNTO 0 GENERATE
sample_f1_wdata(I) <= sample_f1(0, I);
sample_f1_wdata(16*1+I) <= sample_f1(1, I);
sample_f1_wdata(16*2+I) <= sample_f1(2, I);
sample_f1_wdata(16*3+I) <= sample_f1(6, I);
sample_f1_wdata(16*4+I) <= sample_f1(7, I);
END GENERATE all_bit_sample_f1;
-----------------------------------------------------------------------------
-- F2 -- @16 Hz
-----------------------------------------------------------------------------
Downsampling_f2 : Downsampling
GENERIC MAP (
ChanelCount => ChanelCount,
SampleSize => 18,
DivideParam => 96)
PORT MAP (
clk => clk,
rstn => rstn,
sample_in_val => sample_f1_val ,
sample_in => sample_f1,
sample_out_val => sample_f2_val,
sample_out => sample_f2);
sample_f2_wen <= NOT(sample_f2_val) &
NOT(sample_f2_val) &
NOT(sample_f2_val) &
NOT(sample_f2_val) &
NOT(sample_f2_val);
all_bit_sample_f2 : FOR I IN 15 DOWNTO 0 GENERATE
sample_f2_wdata(I) <= sample_f2(0, I);
sample_f2_wdata(16*1+I) <= sample_f2(1, I);
sample_f2_wdata(16*2+I) <= sample_f2(2, I);
sample_f2_wdata(16*3+I) <= sample_f2(6, I);
sample_f2_wdata(16*4+I) <= sample_f2(7, I);
END GENERATE all_bit_sample_f2;
-----------------------------------------------------------------------------
-- F3 -- @256 Hz
-----------------------------------------------------------------------------
Downsampling_f3 : Downsampling
GENERIC MAP (
ChanelCount => ChanelCount,
SampleSize => 18,
DivideParam => 256)
PORT MAP (
clk => clk,
rstn => rstn,
sample_in_val => sample_f0_val ,
sample_in => sample_f0,
sample_out_val => sample_f3_val,
sample_out => sample_f3);
sample_f3_wen <= (NOT sample_f3_val) &
(NOT sample_f3_val) &
(NOT sample_f3_val) &
(NOT sample_f3_val) &
(NOT sample_f3_val);
all_bit_sample_f3 : FOR I IN 15 DOWNTO 0 GENERATE
sample_f3_wdata(I) <= sample_f3(0, I);
sample_f3_wdata(16*1+I) <= sample_f3(1, I);
sample_f3_wdata(16*2+I) <= sample_f3(2, I);
sample_f3_wdata(16*3+I) <= sample_f3(6, I);
sample_f3_wdata(16*4+I) <= sample_f3(7, I);
END GENERATE all_bit_sample_f3;
END tb;