wrapper_corr_5_seq.vhd

Stereo-Vision circuit description, Aug 2002, Ahmad Darabiha This design contains four top level ci

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;

entity wrapper_corr_5_seq is 
	--generic(
	--	sh_reg_w :integer);
	port(
 	 	tm3_clk_v0 : in std_logic;
		wen : in std_logic;
		d_l_1 : in std_logic_vector(7 downto 0);
		d_l_2 : in std_logic_vector(7 downto 0);
		d_r_1: in std_logic_vector(7 downto 0);
		d_r_2: in std_logic_vector(7 downto 0);
		corr_out_0: out std_logic_vector(15 downto 0);
		corr_out_1: out std_logic_vector(15 downto 0);
		corr_out_2: out std_logic_vector(15 downto 0);
		corr_out_3: out std_logic_vector(15 downto 0);
		corr_out_4: out std_logic_vector(15 downto 0);
		corr_out_5: out std_logic_vector(15 downto 0));
end wrapper_corr_5_seq;

architecture arch_wrapper_corr_5_seq of wrapper_corr_5_seq is       

constant sh_reg_w : natural :=8;

signal out_r1,out_01,out_11,out_21,out_31,out_41,out_51 : std_logic_vector(sh_reg_w-1 downto 0);
signal out_r2,out_02,out_12,out_22,out_32,out_42,out_52 : std_logic_vector(sh_reg_w-1 downto 0);
signal corr_out_0_tmp,corr_out_1_tmp,corr_out_2_tmp,corr_out_3_tmp,
		corr_out_4_tmp,corr_out_5_tmp: std_logic_vector(2*sh_reg_w-1 downto 0);

component sh_reg 
	generic(
		sh_reg_w :integer);
	port(
 	 	clk : in std_logic;
		wen : in std_logic;
		din_1 : in std_logic_vector(sh_reg_w-1 downto 0);
		din_2 : in std_logic_vector(sh_reg_w-1 downto 0);
		dout_1: out std_logic_vector(sh_reg_w-1 downto 0);
		dout_2: out std_logic_vector(sh_reg_w-1 downto 0));
end component;	

component corr_seq
	generic ( sh_reg_w : integer);
	port(
		clk: in std_logic;
		new_data : in std_logic;
		in_l_re : in std_logic_vector(sh_reg_w-1 downto 0);
		in_l_im : in std_logic_vector(sh_reg_w-1 downto 0);
		in_r_re : in std_logic_vector(sh_reg_w-1 downto 0);
		in_r_im : in std_logic_vector(sh_reg_w-1 downto 0);
		corr_out : out std_logic_vector(2*sh_reg_w-1 downto 0));
end component;

begin

------------------------------------------------------------------
----------------- passing the inputs through registers -----------
------------------------------------------------------------------

----------------------  right input ------------------------------ 
		inst_sh_reg_r_1: sh_reg
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					d_r_1,
					d_r_2,
					out_r1,
					out_r2);

---------------------- left input to a fifo --------------------------------
		inst_sh_reg_0: sh_reg
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					d_l_1,
					d_l_2,
					out_01,
					out_02);
		
		inst_sh_reg_1: sh_reg
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_01,
					out_02,
					out_11,
					out_12);
		
		inst_sh_reg_2: sh_reg
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_11,
					out_12,
					out_21,
					out_22);
		
		inst_sh_reg_3: sh_reg
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_21,
					out_22,
					out_31,
					out_32);
		
		inst_sh_reg_4: sh_reg
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_31,
					out_32,
					out_41,
					out_42);
		
		inst_sh_reg_5: sh_reg
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_41,
					out_42,
					out_51,
					out_52);

-------------------------------------------------------------------------		
---------------------------- taking the correlation ---------------------
-------------------------------------------------------------------------

		inst_corr_0: corr_seq
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_01,
					out_02,
					out_r1,
					out_r2,
					corr_out_0_tmp);
	

		inst_corr_1: corr_seq
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_11,
					out_12,
					out_r1,
					out_r2,
					corr_out_1_tmp);

		inst_corr_2: corr_seq
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_21,
					out_22,
					out_r1,
					out_r2,
					corr_out_2_tmp);

		inst_corr_3: corr_seq
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_31,
					out_32,
					out_r1,
					out_r2,
					corr_out_3_tmp);

		inst_corr_4: corr_seq
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_41,
					out_42,
					out_r1,
					out_r2,
					corr_out_4_tmp);

		inst_corr_5: corr_seq
			generic map( sh_reg_w )
			port map(tm3_clk_v0,
					wen,
					out_51,
					out_52,
					out_r1,
					out_r2,
					corr_out_5_tmp);

--------------------------------------------------------------------
--------------------------  registering the output values ----------
--------------------------------------------------------------------

process(tm3_clk_v0) begin
 	if (tm3_clk_v0'event and tm3_clk_v0 = '1') then
		if wen = '1' then
			corr_out_0 <= corr_out_0_tmp;
			corr_out_1 <= corr_out_1_tmp;
			corr_out_2 <= corr_out_2_tmp;
			corr_out_3 <= corr_out_3_tmp;
			corr_out_4 <= corr_out_4_tmp;
			corr_out_5 <= corr_out_5_tmp;
		end if;
	end if;
end process;
end arch_wrapper_corr_5_seq;


--configuration CFG_WRAPPER_CORR of wrapper_corr_5 is
--	for arch_wrapper_corr_5
--	end for;
--end CFG_WRAPPER_CORR;