English
mc8051_tmrctr_.vhd
上传用户：sztwq510
上传日期：2007-04-20
资源大小：209k
文件大小：5k
源码类别：
VHDL/FPGA/Verilog
开发平台：
Matlab
- -------------------------------------------------------------------------------
- -- --
- -- X X XXXXXX XXXXXX XXXXXX XXXXXX X --
- -- XX XX X X X X X X X XX --
- -- X X X X X X X X X X X X --
- -- X X X X X X X X X X X X --
- -- X X X X XXXXXX X X XXXXXX X --
- -- X X X X X X X X X --
- -- X X X X X X X X X --
- -- X X X X X X X X X X --
- -- X X XXXXXX XXXXXX XXXXXX XXXXXX X --
- -- --
- -- --
- -- O R E G A N O S Y S T E M S --
- -- --
- -- Design & Consulting --
- -- --
- -------------------------------------------------------------------------------
- -- --
- -- Web: http://www.oregano.at/ --
- -- --
- -- Contact: mc8051@oregano.at --
- -- --
- -------------------------------------------------------------------------------
- -- --
- -- MC8051 - VHDL 8051 Microcontroller IP Core --
- -- Copyright (C) 2001 OREGANO SYSTEMS --
- -- --
- -- This library is free software; you can redistribute it and/or --
- -- modify it under the terms of the GNU Lesser General Public --
- -- License as published by the Free Software Foundation; either --
- -- version 2.1 of the License, or (at your option) any later version. --
- -- --
- -- This library 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 --
- -- Lesser General Public License for more details. --
- -- --
- -- Full details of the license can be found in the file LGPL.TXT. --
- -- --
- -- You should have received a copy of the GNU Lesser General Public --
- -- License along with this library; if not, write to the Free Software --
- -- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA --
- -- --
- -------------------------------------------------------------------------------
- --
- --
- -- Author: Roland H鰈ler
- --
- -- Filename: mc8051_tmrctr_.vhd
- --
- -- Date of Creation: Mon Aug 9 12:14:48 1999
- --
- -- Version: $Revision: 1.4 $
- --
- -- Date of Latest Version: $Date: 2002/01/07 12:17:45 $
- --
- --
- -- Description: Timer/Counter unit of the mc8051 microcontroller.
- --
- --
- --
- --
- -------------------------------------------------------------------------------
- library IEEE;
- use IEEE.std_logic_1164.all;
- use IEEE.std_logic_arith.all;
- -----------------------------ENTITY DECLARATION--------------------------------
- entity mc8051_tmrctr is
- port (clk : in std_logic; --< system clock
- reset : in std_logic; --< system reset
- int0_i : in std_logic; --< interrupt 0
- int1_i : in std_logic; --< interrupt 1
- t0_i : in std_logic; --< external clock for
- -- timer/counter0
- t1_i : in std_logic; --< external clock for
- -- timer/counter1
- tmod_i : in std_logic_vector(7 downto 0); --< from SFR register
- tcon_tr0_i : in std_logic; --< timer run 0
- tcon_tr1_i : in std_logic; --< timer run 1
- reload_i : in std_logic_vector(7 downto 0); --< to load counter
- wt_en_i : in std_logic; --< indicates reload
- wt_i : in std_logic_vector(1 downto 0); --< reload which reg.
- th0_o : out std_logic_vector(7 downto 0); --< contents of th0
- tl0_o : out std_logic_vector(7 downto 0); --< contents of tl0
- th1_o : out std_logic_vector(7 downto 0); --< contents of th1
- tl1_o : out std_logic_vector(7 downto 0); --< contents of tl1
- tf0_o : out std_logic; --< interrupt flag 0
- tf1_o : out std_logic); --< interrupt flag 1
- end mc8051_tmrctr;
