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Improved IIR filter configuration
Improved IIR filter configuration

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ALU.vhd
81 lines | 2.2 KiB | text/x-vhdl | VhdlLexer
------------------------------------------------------------------------------
-- This file is a part of the LPP VHDL IP LIBRARY
-- Copyright (C) 2009 - 2010, Laboratory of Plasmas Physic - CNRS
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 3 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-------------------------------------------------------------------------------
------------------------------------------------------------------------------
-- This file is a part of the LPP VHDL IP LIBRARY
-- Copyright (C) 2009 - 2010, Laboratory of Plasmas Physic - CNRS
library IEEE;
use IEEE.numeric_std.all;
use IEEE.std_logic_1164.all;
library lpp;
use lpp.general_purpose.all;
--IDLE =0000 MAC =0001 MULT =0010 ADD =0011 CLRMAC =0100
--NOT =0101 AND =0110 OR =0111 XOR =1000
--SHIFTleft =1001 SHIFTright =1010
entity ALU is
generic(
Arith_en : integer := 1;
Logic_en : integer := 1;
Input_SZ_1 : integer := 16;
Input_SZ_2 : integer := 9
);
port(
clk : in std_logic;
reset : in std_logic;
ctrl : in std_logic_vector(3 downto 0);
OP1 : in std_logic_vector(Input_SZ_1-1 downto 0);
OP2 : in std_logic_vector(Input_SZ_2-1 downto 0);
RES : out std_logic_vector(Input_SZ_1+Input_SZ_2-1 downto 0)
);
end entity;
architecture ar_ALU of ALU is
signal clr_MAC : std_logic:='1';
begin
clr_MAC <= '1' when ctrl = "0100" else '0';
arith : if Arith_en = 1 generate
MACinst : MAC
generic map(Input_SZ_1,Input_SZ_2)
port map(clk,reset,clr_MAC,ctrl(1 downto 0),OP1,OP2,RES);
end generate;
end architecture;