- Intital revision
git-svn-id: http://moon:8086/svn/vhdl/trunk@166 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
@@ -0,0 +1,22 @@
|
||||
vlib work
|
||||
vcom -explicit -93 "../../../fixed/fixed_pkg_c.vhd"
|
||||
vcom -explicit -93 "../../../fixed/fixed_util_pkg.vhd"
|
||||
vcom -explicit -93 "../../../PCK_FIO-2002.7/PCK_FIO_1993.vhd"
|
||||
vcom -explicit -93 "../../../PCK_FIO-2002.7/PCK_FIO_1993_BODY.vhd"
|
||||
vcom -explicit -93 "../../cordic/src/cordic_pkg.vhd"
|
||||
vcom -explicit -93 "../../cordic/src/cordic_pipe_stage.vhd"
|
||||
vcom -explicit -93 "../../cordic/src/cordic_pipe_pre.vhd"
|
||||
vcom -explicit -93 "../../cordic/src/cordic_pipe_post.vhd"
|
||||
vcom -explicit -93 "../../cordic/src/cordic_pipe_top.vhd"
|
||||
vcom -explicit -93 "../../nco/src/mix_cordic.vhd"
|
||||
vcom -explicit -93 "../../decimator/CIC/src/cic_i_pipe.vhd"
|
||||
vcom -explicit -93 "../../decimator/CIC/src/cic_c_pipe.vhd"
|
||||
vcom -explicit -93 "../../decimator/CIC/src/cic_decim_pipe.vhd"
|
||||
vcom -explicit -93 "../src/ddc.vhd"
|
||||
vcom -explicit -93 "../src/tb_ddc.vhd"
|
||||
vsim -t 1ps -lib work tb_ddc
|
||||
do {tb_ddc.wdo}
|
||||
view wave
|
||||
view structure
|
||||
view signals
|
||||
run 400us
|
||||
@@ -0,0 +1,64 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -format Logic /tb_ddc/clk
|
||||
add wave -noupdate -format Logic /tb_ddc/rst
|
||||
add wave -noupdate -format Logic /tb_ddc/ddc_shift_we
|
||||
add wave -noupdate -format Literal /tb_ddc/ddc_shift_addr
|
||||
add wave -noupdate -format Literal /tb_ddc/ddc_shift_in
|
||||
add wave -noupdate -format Logic /tb_ddc/ddc_nco_rst
|
||||
add wave -noupdate -format Logic /tb_ddc/ddc_nco_en
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/ddc_freq_in
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/ddc_phase_in
|
||||
add wave -noupdate -format Literal /tb_ddc/ddc_ratio
|
||||
add wave -noupdate -format Literal /tb_ddc/ddc_diff_delay
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/ddc_din_i
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/ddc_din_q
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/ddc_dout_i
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/ddc_dout_q
|
||||
add wave -noupdate -format Logic /tb_ddc/ddc_dout_vld
|
||||
add wave -noupdate -format Logic /tb_ddc/ddc_din_vld
|
||||
add wave -noupdate -format Logic /tb_ddc/rfgen_nco_rst
|
||||
add wave -noupdate -format Logic /tb_ddc/rfgen_nco_en
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/rfgen_freq_in
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/rfgen_phase_in
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/rfgen_din_i
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/rfgen_din_q
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/rfgen_dout_i
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/rfgen_dout_q
|
||||
add wave -noupdate -format Logic /tb_ddc/rfgen_dout_vld
|
||||
add wave -noupdate -format Logic /tb_ddc/fileout_enable
|
||||
add wave -noupdate -divider DDC
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/uut/din_i
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/uut/din_q
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/uut/dout_i
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/uut/dout_q
|
||||
add wave -noupdate -format Logic /tb_ddc/uut/din_vld
|
||||
add wave -noupdate -format Logic /tb_ddc/uut/dout_vld
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/uut/mix_dout_i
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/uut/mix_dout_q
|
||||
add wave -noupdate -format Logic /tb_ddc/uut/mix_dout_vld
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/uut/dec_dout_i
|
||||
add wave -noupdate -format Literal -radix decimal /tb_ddc/uut/dec_dout_q
|
||||
add wave -noupdate -format Logic /tb_ddc/uut/dec_dout_vld_i
|
||||
add wave -noupdate -format Logic /tb_ddc/uut/dec_dout_vld_q
|
||||
add wave -noupdate -format Logic /tb_ddc/ddc_din_vld
|
||||
add wave -noupdate -format Analog-Step -height 50 -scale 10.0 /tb_ddc/ddc_i_out_f
|
||||
add wave -noupdate -format Analog-Step -height 50 -scale 10.0 /tb_ddc/ddc_q_out_f
|
||||
add wave -noupdate -format Analog-Step -height 50 -scale 10.0 /tb_ddc/rfgen_i_out_f
|
||||
add wave -noupdate -format Analog-Step -height 50 -scale 10.0 /tb_ddc/rfgen_q_out_f
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {399851293 ps} 0}
|
||||
configure wave -namecolwidth 150
|
||||
configure wave -valuecolwidth 100
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 100
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 1
|
||||
update
|
||||
WaveRestoreZoom {399827014 ps} {400009105 ps}
|
||||
@@ -0,0 +1,36 @@
|
||||
% Read data
|
||||
function tb_results()
|
||||
fa = 100.0;
|
||||
f = TEXTREAD('freq.txt')*1E-6
|
||||
R = 64;
|
||||
fa_dec = fa/R
|
||||
N_pfir = 63;
|
||||
|
||||
I_out_dec = TEXTREAD('i_dec.txt')';
|
||||
Q_out_dec = TEXTREAD('q_dec.txt')';
|
||||
|
||||
N_dec = length(I_out_dec)-2*N_pfir;
|
||||
N_fft_dec = N_dec
|
||||
N_fft2_dec = N_fft_dec/2;
|
||||
fft_y2_dec = 2/N_fft_dec*abs(fft(I_out_dec(2*N_pfir+1:N_fft_dec+2*N_pfir).*hann(N_fft_dec)'));
|
||||
|
||||
pfir_b = sinc(0.2*(-(N_pfir-1)/2:1:(N_pfir)/2));
|
||||
pfir_b = pfir_b/sum(pfir_b).*blackman(N_pfir)';
|
||||
I_out_dec_pfir = filter(pfir_b, 1, I_out_dec);
|
||||
Q_out_dec_pfir = filter(pfir_b, 1, Q_out_dec);
|
||||
fft_y2_dec_pfir = 2/N_fft_dec*abs(fft(I_out_dec_pfir(2*N_pfir+1:N_fft_dec+2*N_pfir).*hann(N_fft_dec)'));
|
||||
|
||||
% Output
|
||||
close all;
|
||||
|
||||
plot(fa/(R*N_fft_dec)*(0:N_fft2_dec),20*log10(fft_y2_dec(1:N_fft2_dec+1)), '-', fa/(R*N_fft_dec)*(0:N_fft2_dec),20*log10(fft_y2_dec_pfir(1:N_fft2_dec+1)), '-'); grid;
|
||||
xlabel('MHz');
|
||||
figure;
|
||||
plot(1:length(I_out_dec_pfir), I_out_dec_pfir, 1:length(Q_out_dec_pfir), Q_out_dec_pfir); grid;
|
||||
|
||||
figure;
|
||||
freqz(pfir_b, 1, 1000);
|
||||
|
||||
figure;
|
||||
plot(pfir_b); grid;
|
||||
|
||||
@@ -0,0 +1,219 @@
|
||||
--------------------------------------------------------------------------------
|
||||
-- Company:
|
||||
-- Engineer:
|
||||
--
|
||||
-- Create Date: 17:16:42 13.05.2007
|
||||
-- Design Name: tb_nco
|
||||
-- Module Name: tb_nco.vhd
|
||||
-- Project Name: nco
|
||||
-- Target Device:
|
||||
-- Tool versions:
|
||||
-- Description:
|
||||
--
|
||||
--------------------------------------------------------------------------------
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.MATH_REAL.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.fixed_pkg.all;
|
||||
use work.fixed_util_pkg.all;
|
||||
|
||||
ENTITY ddc IS
|
||||
Generic
|
||||
(
|
||||
nbits_in : integer := 18;
|
||||
nbits_in_frac : integer := 16;
|
||||
nbits_out : integer := 18;
|
||||
nbits_out_frac : integer := 16;
|
||||
lo_nbits_phase : integer := 20;
|
||||
lo_nbits_freq : integer := 20;
|
||||
cic_nstages : integer := 3;
|
||||
cic_max_ratio : integer := 4096;
|
||||
cic_max_diff_delay : integer := 2;
|
||||
cic_max_width : integer := 32;
|
||||
cic_max_width_frac : integer := 20
|
||||
);
|
||||
PORT
|
||||
(
|
||||
rst : in std_logic;
|
||||
clk : in std_logic;
|
||||
lo_nco_rst : in std_logic;
|
||||
lo_nco_en : in std_logic;
|
||||
lo_freq_in : in unsigned(lo_nbits_freq-1 downto 0);
|
||||
lo_phase_in : in unsigned(lo_nbits_phase-1 downto 0);
|
||||
cic_ratio : in natural range 1 to cic_max_ratio;
|
||||
cic_diff_delay : in natural range 1 to cic_max_diff_delay;
|
||||
cic_shift_in : in natural range 0 to cic_max_width-1;
|
||||
din_i : in sfixed;
|
||||
din_q : in sfixed;
|
||||
dout_i : out sfixed;
|
||||
dout_q : out sfixed;
|
||||
din_vld : in std_logic;
|
||||
dout_vld : out std_logic
|
||||
);
|
||||
END ddc;
|
||||
|
||||
ARCHITECTURE behavior OF ddc IS
|
||||
|
||||
-- Component Declaration for the Unit Under Test (UUT)
|
||||
COMPONENT mix
|
||||
GENERIC
|
||||
(
|
||||
nbits_din : integer;
|
||||
nbits_din_frac : integer;
|
||||
nbits_dout : integer;
|
||||
nbits_dout_frac : integer;
|
||||
nbits_phase : integer;
|
||||
nbits_freq : integer
|
||||
);
|
||||
PORT
|
||||
(
|
||||
rst : in std_logic;
|
||||
clk : in std_logic;
|
||||
nco_rst : in std_logic;
|
||||
nco_en : in std_logic;
|
||||
freq_in : in unsigned(nbits_freq-1 downto 0);
|
||||
phase_in : in unsigned(nbits_phase-1 downto 0);
|
||||
din_i : in sfixed;
|
||||
din_q : in sfixed;
|
||||
dout_i : out sfixed;
|
||||
dout_q : out sfixed;
|
||||
din_vld : in std_logic;
|
||||
dout_vld : out std_logic
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT cic_decim_pipe
|
||||
GENERIC
|
||||
(
|
||||
nstages : integer;
|
||||
max_ratio : integer;
|
||||
max_diff_delay : integer;
|
||||
max_width : integer;
|
||||
max_width_frac : integer;
|
||||
in_width : integer;
|
||||
in_width_frac : integer;
|
||||
out_width : integer;
|
||||
out_width_frac : integer
|
||||
);
|
||||
PORT
|
||||
(
|
||||
clk : in std_logic;
|
||||
rst : in std_logic;
|
||||
vld_in : in std_logic;
|
||||
ratio : in natural range 1 to max_ratio;
|
||||
diff_delay : in natural range 1 to max_diff_delay;
|
||||
shift_in : in natural range 0 to max_width-1;
|
||||
din : in sfixed;
|
||||
dout : out sfixed;
|
||||
vld_out : out std_logic
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
constant lo_nbits_in : integer := nbits_in;
|
||||
constant lo_nbits_in_frac : integer := nbits_in_frac;
|
||||
constant lo_nbits_out : integer := nbits_in;
|
||||
constant lo_nbits_out_frac : integer := nbits_in_frac;
|
||||
|
||||
constant cic_nbits_in : integer := lo_nbits_out;
|
||||
constant cic_nbits_in_frac : integer := lo_nbits_out_frac;
|
||||
constant cic_nbits_out : integer := nbits_out;
|
||||
constant cic_nbits_out_frac : integer := nbits_out_frac;
|
||||
|
||||
SIGNAL mix_dout_i : sfixed(shi(lo_nbits_out, lo_nbits_out_frac) downto slo(lo_nbits_out, lo_nbits_out_frac));
|
||||
SIGNAL mix_dout_q : sfixed(shi(lo_nbits_out, lo_nbits_out_frac) downto slo(lo_nbits_out, lo_nbits_out_frac));
|
||||
SIGNAL mix_dout_vld : std_logic;
|
||||
|
||||
SIGNAL dec_dout_i : sfixed(shi(cic_nbits_out, cic_nbits_out_frac) downto slo(cic_nbits_out, cic_nbits_out_frac));
|
||||
SIGNAL dec_dout_q : sfixed(shi(cic_nbits_out, cic_nbits_out_frac) downto slo(cic_nbits_out, cic_nbits_out_frac));
|
||||
SIGNAL dec_dout_vld_i : std_logic;
|
||||
SIGNAL dec_dout_vld_q : std_logic;
|
||||
|
||||
BEGIN
|
||||
|
||||
dout_vld <= dec_dout_vld_i and dec_dout_vld_q;
|
||||
dout_i <= dec_dout_i;
|
||||
dout_q <= dec_dout_q;
|
||||
|
||||
-- Instantiate the Unit Under Test (UUT)
|
||||
inst_mixer: mix
|
||||
GENERIC MAP
|
||||
(
|
||||
nbits_din => lo_nbits_in,
|
||||
nbits_din_frac => lo_nbits_in_frac,
|
||||
nbits_dout => lo_nbits_out,
|
||||
nbits_dout_frac => lo_nbits_out_frac,
|
||||
nbits_phase => lo_nbits_phase,
|
||||
nbits_freq => lo_nbits_freq
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
nco_rst => lo_nco_rst,
|
||||
nco_en => lo_nco_en,
|
||||
freq_in => lo_freq_in,
|
||||
phase_in => lo_phase_in,
|
||||
din_i => din_i,
|
||||
din_q => din_q,
|
||||
dout_i => mix_dout_i,
|
||||
dout_q => mix_dout_q,
|
||||
din_vld => din_vld,
|
||||
dout_vld => mix_dout_vld
|
||||
);
|
||||
|
||||
inst_cic_decim_pipe_I : cic_decim_pipe
|
||||
GENERIC MAP
|
||||
(
|
||||
nstages => cic_nstages,
|
||||
max_ratio => cic_max_ratio,
|
||||
max_diff_delay => cic_max_diff_delay,
|
||||
max_width => cic_max_width,
|
||||
max_width_frac => cic_max_width_frac,
|
||||
in_width => cic_nbits_in,
|
||||
in_width_frac => cic_nbits_in_frac,
|
||||
out_width => cic_nbits_out,
|
||||
out_width_frac => cic_nbits_out_frac
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
clk => clk,
|
||||
rst => rst,
|
||||
vld_in => mix_dout_vld,
|
||||
ratio => cic_ratio,
|
||||
diff_delay => cic_diff_delay,
|
||||
shift_in => cic_shift_in,
|
||||
din => mix_dout_i,
|
||||
dout => dec_dout_i,
|
||||
vld_out => dec_dout_vld_i
|
||||
);
|
||||
|
||||
inst_cic_decim_pipe_Q : cic_decim_pipe
|
||||
GENERIC MAP
|
||||
(
|
||||
nstages => cic_nstages,
|
||||
max_ratio => cic_max_ratio,
|
||||
max_diff_delay => cic_max_diff_delay,
|
||||
max_width => cic_max_width,
|
||||
max_width_frac => cic_max_width_frac,
|
||||
in_width => cic_nbits_in,
|
||||
in_width_frac => cic_nbits_in_frac,
|
||||
out_width => cic_nbits_out,
|
||||
out_width_frac => cic_nbits_out_frac
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
clk => clk,
|
||||
rst => rst,
|
||||
vld_in => mix_dout_vld,
|
||||
ratio => cic_ratio,
|
||||
diff_delay => cic_diff_delay,
|
||||
shift_in => cic_shift_in,
|
||||
din => mix_dout_q,
|
||||
dout => dec_dout_q,
|
||||
vld_out => dec_dout_vld_q
|
||||
);
|
||||
|
||||
END;
|
||||
@@ -0,0 +1,146 @@
|
||||
--------------------------------------------------------------------------------
|
||||
-- Company:
|
||||
-- Engineer:
|
||||
--
|
||||
-- Create Date: 17:16:42 13.05.2007
|
||||
-- Design Name: tb_nco
|
||||
-- Module Name: tb_nco.vhd
|
||||
-- Project Name: nco
|
||||
-- Target Device:
|
||||
-- Tool versions:
|
||||
-- Description:
|
||||
--
|
||||
--------------------------------------------------------------------------------
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.MATH_REAL.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.fixed_pkg.all;
|
||||
use work.fixed_util_pkg.all;
|
||||
use work.cordic_pkg.all;
|
||||
|
||||
ENTITY syn_ddc IS
|
||||
Generic
|
||||
(
|
||||
nbits_in : integer := 18;
|
||||
nbits_in_frac : integer := 16;
|
||||
nbits_out : integer := 18;
|
||||
nbits_out_frac : integer := 16;
|
||||
lo_nbits_phase : integer := 20;
|
||||
lo_nbits_freq : integer := 20;
|
||||
cic_nstages : integer := 3;
|
||||
cic_max_ratio : integer := 1024;
|
||||
cic_max_diff_delay : integer := 2;
|
||||
cic_max_width : integer := 48;
|
||||
cic_max_width_frac : integer := 16
|
||||
);
|
||||
PORT
|
||||
(
|
||||
rst : in std_logic;
|
||||
clk : in std_logic;
|
||||
lo_nco_rst : in std_logic;
|
||||
lo_nco_en : in std_logic;
|
||||
lo_freq_in : in unsigned(lo_nbits_freq-1 downto 0);
|
||||
lo_phase_in : in unsigned(lo_nbits_phase-1 downto 0);
|
||||
cic_ratio : in natural range 1 to cic_max_ratio;
|
||||
cic_diff_delay : in natural range 1 to cic_max_diff_delay;
|
||||
cic_shift_in : in natural range 0 to cic_max_width-1;
|
||||
din_i : in signed(nbits_in-1 downto 0);
|
||||
din_q : in signed(nbits_in-1 downto 0);
|
||||
dout_i : out signed(nbits_out-1 downto 0);
|
||||
dout_q : out signed(nbits_out-1 downto 0);
|
||||
din_vld : in std_logic;
|
||||
dout_vld : out std_logic
|
||||
);
|
||||
END syn_ddc;
|
||||
|
||||
ARCHITECTURE behavior OF syn_ddc IS
|
||||
|
||||
-- Component Declaration for the Unit Under Test (UUT)
|
||||
COMPONENT ddc
|
||||
GENERIC
|
||||
(
|
||||
nbits_in : integer;
|
||||
nbits_in_frac : integer;
|
||||
nbits_out : integer;
|
||||
nbits_out_frac : integer;
|
||||
lo_nbits_phase : integer;
|
||||
lo_nbits_freq : integer;
|
||||
cic_nstages : integer;
|
||||
cic_max_ratio : integer;
|
||||
cic_max_diff_delay : integer;
|
||||
cic_max_width : integer;
|
||||
cic_max_width_frac : integer
|
||||
);
|
||||
PORT
|
||||
(
|
||||
rst : in std_logic;
|
||||
clk : in std_logic;
|
||||
lo_nco_rst : in std_logic;
|
||||
lo_nco_en : in std_logic;
|
||||
lo_freq_in : in unsigned(lo_nbits_freq-1 downto 0);
|
||||
lo_phase_in : in unsigned(lo_nbits_phase-1 downto 0);
|
||||
cic_ratio : in natural range 1 to cic_max_ratio;
|
||||
cic_diff_delay : in natural range 1 to cic_max_diff_delay;
|
||||
cic_shift_in : in natural range 0 to cic_max_width-1;
|
||||
din_i : in sfixed;
|
||||
din_q : in sfixed;
|
||||
dout_i : out sfixed;
|
||||
dout_q : out sfixed;
|
||||
din_vld : in std_logic;
|
||||
dout_vld : out std_logic
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--Outputs
|
||||
SIGNAL ddc_din_i : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL ddc_din_q : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL ddc_dout_i : sfixed(shi(nbits_out, nbits_out_frac) downto slo(nbits_out, nbits_out_frac));
|
||||
SIGNAL ddc_dout_q : sfixed(shi(nbits_out, nbits_out_frac) downto slo(nbits_out, nbits_out_frac));
|
||||
|
||||
BEGIN
|
||||
|
||||
-- Instantiate the Unit Under Test (UUT)
|
||||
inst_ddc : ddc
|
||||
GENERIC MAP
|
||||
(
|
||||
nbits_in => nbits_in,
|
||||
nbits_in_frac => nbits_in_frac,
|
||||
nbits_out => nbits_out,
|
||||
nbits_out_frac => nbits_out_frac,
|
||||
lo_nbits_phase => lo_nbits_phase,
|
||||
lo_nbits_freq => lo_nbits_freq,
|
||||
cic_nstages => cic_nstages,
|
||||
cic_max_ratio => cic_max_ratio,
|
||||
cic_max_diff_delay => cic_max_diff_delay,
|
||||
cic_max_width => cic_max_width,
|
||||
cic_max_width_frac => cic_max_width_frac
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
lo_nco_rst => lo_nco_rst,
|
||||
lo_nco_en => lo_nco_en,
|
||||
lo_freq_in => lo_freq_in,
|
||||
lo_phase_in => lo_phase_in,
|
||||
cic_ratio => cic_ratio,
|
||||
cic_diff_delay => cic_diff_delay,
|
||||
cic_shift_in => cic_shift_in,
|
||||
din_i => ddc_din_i,
|
||||
din_q => ddc_din_q,
|
||||
dout_i => ddc_dout_i,
|
||||
dout_q => ddc_dout_q,
|
||||
din_vld => din_vld,
|
||||
dout_vld => dout_vld
|
||||
);
|
||||
|
||||
ddc_din_i <= to_sfixed(din_i, ddc_din_i);
|
||||
ddc_din_q <= to_sfixed(din_q, ddc_din_q);
|
||||
|
||||
dout_i <= signed(ddc_dout_i);
|
||||
dout_q <= signed(ddc_dout_q);
|
||||
|
||||
END;
|
||||
@@ -0,0 +1,378 @@
|
||||
--------------------------------------------------------------------------------
|
||||
-- Company:
|
||||
-- Engineer:
|
||||
--
|
||||
-- Create Date: 17:16:42 13.05.2007
|
||||
-- Design Name: tb_nco
|
||||
-- Module Name: tb_nco.vhd
|
||||
-- Project Name: nco
|
||||
-- Target Device:
|
||||
-- Tool versions:
|
||||
-- Description:
|
||||
--
|
||||
--------------------------------------------------------------------------------
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.MATH_REAL.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
use std.textio.all; -- Imports the standard textio package.
|
||||
|
||||
library work;
|
||||
use work.fixed_pkg.all;
|
||||
use work.fixed_util_pkg.all;
|
||||
use work.cordic_pkg.all;
|
||||
use work.PCK_FIO.all;
|
||||
|
||||
ENTITY tb_ddc IS
|
||||
Generic
|
||||
(
|
||||
nbits_in : integer := 16;
|
||||
nbits_in_frac : integer := 14;
|
||||
nbits_out : integer := 18;
|
||||
nbits_out_frac : integer := 16;
|
||||
lo_nbits_phase : integer := 20;
|
||||
lo_nbits_freq : integer := 20;
|
||||
cic_nstages : integer := 3;
|
||||
cic_max_ratio : integer := 4096;
|
||||
cic_max_diff_delay : integer := 1;
|
||||
cic_max_width : integer := 36;
|
||||
cic_max_width_frac : integer := 16;
|
||||
rfgen_nbits_phase : integer := 20;
|
||||
rfgen_nbits_freq : integer := 20
|
||||
);
|
||||
END tb_ddc;
|
||||
|
||||
ARCHITECTURE behavior OF tb_ddc IS
|
||||
|
||||
-- Component Declaration for the Unit Under Test (UUT)
|
||||
COMPONENT ddc
|
||||
GENERIC
|
||||
(
|
||||
nbits_in : integer;
|
||||
nbits_in_frac : integer;
|
||||
nbits_out : integer;
|
||||
nbits_out_frac : integer;
|
||||
lo_nbits_phase : integer;
|
||||
lo_nbits_freq : integer;
|
||||
cic_nstages : integer;
|
||||
cic_max_ratio : integer;
|
||||
cic_max_diff_delay : integer;
|
||||
cic_max_width : integer;
|
||||
cic_max_width_frac : integer
|
||||
);
|
||||
PORT
|
||||
(
|
||||
rst : in std_logic;
|
||||
clk : in std_logic;
|
||||
lo_nco_rst : in std_logic;
|
||||
lo_nco_en : in std_logic;
|
||||
lo_freq_in : in unsigned(lo_nbits_freq-1 downto 0);
|
||||
lo_phase_in : in unsigned(lo_nbits_phase-1 downto 0);
|
||||
cic_ratio : in natural range 1 to cic_max_ratio;
|
||||
cic_diff_delay : in natural range 1 to cic_max_diff_delay;
|
||||
cic_shift_in : in natural range 0 to cic_max_width-1;
|
||||
din_i : in sfixed;
|
||||
din_q : in sfixed;
|
||||
dout_i : out sfixed;
|
||||
dout_q : out sfixed;
|
||||
din_vld : in std_logic;
|
||||
dout_vld : out std_logic
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
-- Rf-Generator
|
||||
COMPONENT mix
|
||||
GENERIC
|
||||
(
|
||||
nbits_din : integer;
|
||||
nbits_din_frac : integer;
|
||||
nbits_dout : integer;
|
||||
nbits_dout_frac : integer;
|
||||
nbits_phase : integer;
|
||||
nbits_freq : integer
|
||||
);
|
||||
PORT
|
||||
(
|
||||
rst : in std_logic;
|
||||
clk : in std_logic;
|
||||
nco_rst : in std_logic;
|
||||
nco_en : in std_logic;
|
||||
freq_in : in unsigned(nbits_freq-1 downto 0);
|
||||
phase_in : in unsigned(nbits_phase-1 downto 0);
|
||||
din_i : in sfixed;
|
||||
din_q : in sfixed;
|
||||
dout_i : out sfixed;
|
||||
dout_q : out sfixed;
|
||||
din_vld : in std_logic;
|
||||
dout_vld : out std_logic
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--Constants
|
||||
constant fa : REAL := 100.0E6;
|
||||
constant frf1 : REAL := 29.9E6;
|
||||
constant frf2 : REAL := 30.0E6;
|
||||
constant frf3 : REAL := 30.1E6;
|
||||
constant flo : REAL := 30.0E6;
|
||||
constant PERIOD : time := 10 ns;
|
||||
|
||||
SIGNAL rfgen1_freq_word : integer := integer(frf1/fa*2.0**rfgen_nbits_freq);
|
||||
SIGNAL rfgen2_freq_word : integer := integer(frf2/fa*2.0**rfgen_nbits_freq);
|
||||
SIGNAL rfgen3_freq_word : integer := integer(frf3/fa*2.0**rfgen_nbits_freq);
|
||||
SIGNAL lo_freq_word : integer := integer(flo/fa*2.0**lo_nbits_freq);
|
||||
|
||||
--Inputs
|
||||
SIGNAL clk : std_logic := '0';
|
||||
SIGNAL rst : std_logic := '1';
|
||||
SIGNAL ddc_nco_rst : std_logic := '0';
|
||||
SIGNAL ddc_nco_en : std_logic := '0';
|
||||
SIGNAL ddc_freq_in : unsigned(lo_nbits_freq-1 downto 0) := (others => '0');
|
||||
SIGNAL ddc_phase_in : unsigned(lo_nbits_phase-1 downto 0) := (others => '0');
|
||||
SIGNAL ddc_diff_delay : natural := 1;
|
||||
SIGNAL ddc_ratio : natural := 64;
|
||||
SIGNAL ddc_shift_in : natural := 18;
|
||||
|
||||
--Outputs
|
||||
SIGNAL ddc_din_i : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL ddc_din_q : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL ddc_dout_i : sfixed(shi(nbits_out, nbits_out_frac) downto slo(nbits_out, nbits_out_frac));
|
||||
SIGNAL ddc_dout_q : sfixed(shi(nbits_out, nbits_out_frac) downto slo(nbits_out, nbits_out_frac));
|
||||
SIGNAL ddc_dout_vld : std_logic;
|
||||
SIGNAL ddc_din_vld : std_logic := '0';
|
||||
|
||||
SIGNAL rfgen_nco_rst : std_logic := '0';
|
||||
SIGNAL rfgen_nco_en : std_logic := '0';
|
||||
SIGNAL rfgen1_freq_in : unsigned(rfgen_nbits_freq-1 downto 0) := (others => '0');
|
||||
SIGNAL rfgen1_phase_in : unsigned(rfgen_nbits_phase-1 downto 0) := (others => '0');
|
||||
SIGNAL rfgen2_freq_in : unsigned(rfgen_nbits_freq-1 downto 0) := (others => '0');
|
||||
SIGNAL rfgen2_phase_in : unsigned(rfgen_nbits_phase-1 downto 0) := (others => '0');
|
||||
SIGNAL rfgen3_freq_in : unsigned(rfgen_nbits_freq-1 downto 0) := (others => '0');
|
||||
SIGNAL rfgen3_phase_in : unsigned(rfgen_nbits_phase-1 downto 0) := (others => '0');
|
||||
|
||||
--Outputs
|
||||
signal rfgen_din_i : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac)) := to_sfixed(0.0, shi(nbits_in, nbits_in_frac), slo(nbits_in, nbits_in_frac));
|
||||
signal rfgen_din_q : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac)) := to_sfixed(1.0, shi(nbits_in, nbits_in_frac), slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen_dout_i : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen_dout_q : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen1_dout_i : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen1_dout_q : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen1_dout_vld : std_logic;
|
||||
SIGNAL rfgen2_dout_i : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen2_dout_q : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen2_dout_vld : std_logic;
|
||||
SIGNAL rfgen3_dout_i : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen3_dout_q : sfixed(shi(nbits_in, nbits_in_frac) downto slo(nbits_in, nbits_in_frac));
|
||||
SIGNAL rfgen3_dout_vld : std_logic;
|
||||
|
||||
SIGNAL fileout_enable : std_logic := '0';
|
||||
|
||||
-- Debug
|
||||
signal ddc_i_out_f : real;
|
||||
signal ddc_q_out_f : real;
|
||||
signal rfgen_i_out_f : real;
|
||||
signal rfgen_q_out_f : real;
|
||||
|
||||
BEGIN
|
||||
|
||||
-- Instantiate the Unit Under Test (UUT)
|
||||
uut : ddc
|
||||
GENERIC MAP
|
||||
(
|
||||
nbits_in => nbits_in,
|
||||
nbits_in_frac => nbits_in_frac,
|
||||
nbits_out => nbits_out,
|
||||
nbits_out_frac => nbits_out_frac,
|
||||
lo_nbits_phase => lo_nbits_phase,
|
||||
lo_nbits_freq => lo_nbits_freq,
|
||||
cic_nstages => cic_nstages,
|
||||
cic_max_ratio => cic_max_ratio,
|
||||
cic_max_diff_delay => cic_max_diff_delay,
|
||||
cic_max_width => cic_max_width,
|
||||
cic_max_width_frac => cic_max_width_frac
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
lo_nco_rst => ddc_nco_rst,
|
||||
lo_nco_en => ddc_nco_en,
|
||||
lo_freq_in => ddc_freq_in,
|
||||
lo_phase_in => ddc_phase_in,
|
||||
cic_ratio => ddc_ratio,
|
||||
cic_diff_delay => ddc_diff_delay,
|
||||
cic_shift_in => ddc_shift_in,
|
||||
din_i => ddc_din_i,
|
||||
din_q => ddc_din_q,
|
||||
dout_i => ddc_dout_i,
|
||||
dout_q => ddc_dout_q,
|
||||
din_vld => ddc_din_vld,
|
||||
dout_vld => ddc_dout_vld
|
||||
);
|
||||
|
||||
rfgen1: mix
|
||||
GENERIC MAP
|
||||
(
|
||||
nbits_din => nbits_in,
|
||||
nbits_din_frac => nbits_in_frac,
|
||||
nbits_dout => nbits_in,
|
||||
nbits_dout_frac => nbits_in_frac,
|
||||
nbits_phase => rfgen_nbits_phase,
|
||||
nbits_freq => rfgen_nbits_freq
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
nco_rst => rfgen_nco_rst,
|
||||
nco_en => rfgen_nco_en,
|
||||
freq_in => rfgen1_freq_in,
|
||||
phase_in => rfgen1_phase_in,
|
||||
din_i => rfgen_din_i,
|
||||
din_q => rfgen_din_q,
|
||||
dout_i => rfgen1_dout_i,
|
||||
dout_q => rfgen1_dout_q,
|
||||
din_vld => '1',
|
||||
dout_vld => rfgen1_dout_vld
|
||||
);
|
||||
|
||||
rfgen2: mix
|
||||
GENERIC MAP
|
||||
(
|
||||
nbits_din => nbits_in,
|
||||
nbits_din_frac => nbits_in_frac,
|
||||
nbits_dout => nbits_in,
|
||||
nbits_dout_frac => nbits_in_frac,
|
||||
nbits_phase => rfgen_nbits_phase,
|
||||
nbits_freq => rfgen_nbits_freq
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
nco_rst => rfgen_nco_rst,
|
||||
nco_en => rfgen_nco_en,
|
||||
freq_in => rfgen2_freq_in,
|
||||
phase_in => rfgen2_phase_in,
|
||||
din_i => rfgen_din_i,
|
||||
din_q => rfgen_din_q,
|
||||
dout_i => rfgen2_dout_i,
|
||||
dout_q => rfgen2_dout_q,
|
||||
din_vld => '1',
|
||||
dout_vld => rfgen2_dout_vld
|
||||
);
|
||||
|
||||
rfgen3: mix
|
||||
GENERIC MAP
|
||||
(
|
||||
nbits_din => nbits_in,
|
||||
nbits_din_frac => nbits_in_frac,
|
||||
nbits_dout => nbits_in,
|
||||
nbits_dout_frac => nbits_in_frac,
|
||||
nbits_phase => rfgen_nbits_phase,
|
||||
nbits_freq => rfgen_nbits_freq
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
nco_rst => rfgen_nco_rst,
|
||||
nco_en => rfgen_nco_en,
|
||||
freq_in => rfgen3_freq_in,
|
||||
phase_in => rfgen3_phase_in,
|
||||
din_i => rfgen_din_i,
|
||||
din_q => rfgen_din_q,
|
||||
dout_i => rfgen3_dout_i,
|
||||
dout_q => rfgen3_dout_q,
|
||||
din_vld => '1',
|
||||
dout_vld => rfgen3_dout_vld
|
||||
);
|
||||
|
||||
tb_clk : PROCESS
|
||||
BEGIN
|
||||
clk <= not clk;
|
||||
wait for PERIOD/2;
|
||||
END PROCESS;
|
||||
|
||||
rfgen_dout_i <= resize(0.333*rfgen1_dout_i + 0.333*rfgen2_dout_i + 0.333*rfgen3_dout_i, rfgen_dout_i);
|
||||
rfgen_dout_q <= resize(0.333*rfgen1_dout_q + 0.333*rfgen2_dout_q + 0.333*rfgen3_dout_q, rfgen_dout_q);
|
||||
|
||||
ddc_din_i <= rfgen_dout_i;
|
||||
ddc_din_q <= to_sfixed(0.0, ddc_din_q);
|
||||
ddc_din_vld <= rfgen1_dout_vld and rfgen2_dout_vld and rfgen3_dout_vld;
|
||||
|
||||
ddc_i_out_f <= to_real(ddc_dout_i);
|
||||
ddc_q_out_f <= to_real(ddc_dout_q);
|
||||
|
||||
rfgen_i_out_f <= to_real(rfgen_dout_i);
|
||||
rfgen_q_out_f <= to_real(rfgen_dout_q);
|
||||
|
||||
tb : PROCESS
|
||||
file RESULT_FREQ: text open write_mode is "freq.txt";
|
||||
variable L: line;
|
||||
|
||||
BEGIN
|
||||
|
||||
-- Wait 100 ns for global reset to finish
|
||||
wait for 4*PERIOD;
|
||||
rst <= '0';
|
||||
|
||||
fprint(RESULT_FREQ, L,"%s\n", REAL'image(flo));
|
||||
|
||||
wait for 2*PERIOD;
|
||||
-------------------------------------------
|
||||
-- Program gains
|
||||
wait for 2*PERIOD;
|
||||
wait until rising_edge(clk);
|
||||
|
||||
-- start DDC
|
||||
ddc_phase_in <= to_unsigned(0,lo_nbits_phase);
|
||||
ddc_freq_in <= to_unsigned(lo_freq_word,lo_nbits_freq);
|
||||
wait until rising_edge(clk);
|
||||
ddc_nco_en <= '1';
|
||||
|
||||
wait for 20*PERIOD;
|
||||
fileout_enable <= '1';
|
||||
|
||||
wait;
|
||||
END PROCESS;
|
||||
|
||||
|
||||
rfgen_ctrl : PROCESS
|
||||
|
||||
BEGIN
|
||||
wait until rising_edge(clk) and rst = '0';
|
||||
rfgen1_freq_in <= to_unsigned(rfgen1_freq_word,rfgen_nbits_freq);
|
||||
rfgen1_phase_in <= to_unsigned(0,rfgen_nbits_phase);
|
||||
rfgen2_freq_in <= to_unsigned(rfgen2_freq_word,rfgen_nbits_freq);
|
||||
rfgen2_phase_in <= to_unsigned(0,rfgen_nbits_phase);
|
||||
rfgen3_freq_in <= to_unsigned(rfgen3_freq_word,rfgen_nbits_freq);
|
||||
rfgen3_phase_in <= to_unsigned(0,rfgen_nbits_phase);
|
||||
wait until rising_edge(clk);
|
||||
rfgen_nco_en <= '1';
|
||||
|
||||
|
||||
wait;
|
||||
END PROCESS;
|
||||
|
||||
tb_fo : PROCESS(clk)
|
||||
file RESULT_Ii: text open write_mode is "i_in.txt";
|
||||
file RESULT_Qi: text open write_mode is "q_in.txt";
|
||||
file RESULT_Io: text open write_mode is "i_dec.txt";
|
||||
file RESULT_Qo: text open write_mode is "q_dec.txt";
|
||||
variable L: line;
|
||||
|
||||
BEGIN
|
||||
if rising_edge(clk) and fileout_enable = '1' then
|
||||
if ddc_din_vld = '1' then
|
||||
fprint(RESULT_Ii, L,"%s\n", REAL'image(to_real(rfgen_dout_i)));
|
||||
fprint(RESULT_Qi, L,"%s\n", REAL'image(to_real(rfgen_dout_q)));
|
||||
end if;
|
||||
if ddc_dout_vld = '1' then
|
||||
fprint(RESULT_Io, L,"%s\n", REAL'image(to_real(ddc_dout_i)));
|
||||
fprint(RESULT_Qo, L,"%s\n", REAL'image(to_real(ddc_dout_q)));
|
||||
end if;
|
||||
end if;
|
||||
|
||||
END PROCESS;
|
||||
|
||||
END;
|
||||
Reference in New Issue
Block a user