libjtagcom.vhd

来自「The GRLIB IP Library is an integrated se」· VHDL 代码 · 共 65 行

----------------------------------------------------------------------------
--  This file is a part of the GRLIB VHDL IP LIBRARY
--  Copyright (C) 2004 GAISLER RESEARCH
--
--  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 2 of the License, or
--  (at your option) any later version.
--
--  See the file COPYING for the full details of the license.
--
-----------------------------------------------------------------------------
-- Package: 	libjtagcom
-- File:	libjtagcom.vhd
-- Author:	Edvin Catovic - Gaisler Research
-- Description:	JTAG Commulnications link signal and component declarations
------------------------------------------------------------------------------

library ieee;
use ieee.std_logic_1164.all;
library grlib;
use grlib.amba.all;
use grlib.tech.all;
library gaisler;
use gaisler.misc.all;


package libjtagcom is

  type tap_in_type is record
    en   : std_ulogic;
    tdo  : std_ulogic;
  end record;

  type tap_out_type is record                            
    tck   : std_ulogic;
    tdi   : std_ulogic;
    inst  : std_logic_vector(7 downto 0);
    asel  : std_ulogic;
    dsel  : std_ulogic;
    reset : std_ulogic;
    capt  : std_ulogic;
    shift : std_ulogic;
    upd   : std_ulogic;      
  end record;
  
  component jtagcom 
  generic (
    tech  : integer := 0;    
    nsync : integer range 1 to 2 := 2;
    ainst  : integer range 0 to 255 := 2;
    dinst  : integer range 0 to 255 := 3);
  port (
    rst  : in std_ulogic;
    clk  : in std_ulogic;
    tapo : in tap_out_type;
    tapi : out tap_in_type;
    dmao : in  ahb_dma_out_type;    
    dmai : out ahb_dma_in_type
    );
  end component;

end;