pkg_genericinterruptblocktypes.package.vhd

VHDL语言编写的中断模块,是个一般性的设计,可以很容易修改到你自己的设计中去.

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-- Copyright (c) 1999 by ALCATEL. All rights reserved.
--
-- Filename    : pkg_GenericInterruptBlockTypes.Package.vhd
--
-- Purpose     : 
--
-- Limitations : none
--
-- Authors     : welch
--
-- Projects    : mse
--
-- Tools       : Synopsys Design Compiler 9808
--               Cadence Leapfrog 97A
--
-- Reference   : 1AB 15160 AAAA PEZZA
--
-- Coding Std. : Release 2.1
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library ieee;
use ieee.std_logic_1164.all;

package pkg_GenericInterruptBlockTypes is

   --
   -- this constants are used as generics for customizing a single
   -- interrupt cell
   --

   subtype s_GIBEventGeneric    is integer range 0 to 4;
   subtype s_GIBIMRResetGeneric is integer range 0 to 1;

   constant c_PosLevel : integer:=0;
   constant c_NegLevel : integer:=1;
   constant c_Edge     : integer:=2;
   constant c_PosEdge  : integer:=3;
   constant c_NegEdge  : integer:=4;
     
   constant c_ICRCAddress : std_ulogic_vector(2 downto 0):="000";
   constant c_IMRAddress  : std_ulogic_vector(2 downto 0):="001";
   constant c_IERAddress  : std_ulogic_vector(2 downto 0):="010";
   constant c_IARCAddress : std_ulogic_vector(2 downto 0):="011";
   constant c_ICRSAddress : std_ulogic_vector(2 downto 0):="100";
   constant c_ISRAddress  : std_ulogic_vector(2 downto 0):="101";
     
end pkg_GenericInterruptBlockTypes;