cnt109.vhd

--author: Suntion Tang --date: 2008-6-7 -- two warning --modify: By Suntion Tang at 2008-6-14 -

-----------------------------------------------------
--author:  Suntion Tang  
--date:    2008-6-7
--modify:  By suntion Tang
--description: this is a counter of 106 system
-----------------------------------------------------
LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL; 
USE IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY CNT109 IS
    PORT (CLK : IN STD_LOGIC;                     
          RST : IN STD_LOGIC;                                         
          OUTY : OUT STD_LOGIC_VECTOR(6 DOWNTO 0) );           
   END CNT109;
ARCHITECTURE behav OF CNT109 IS 
    SIGNAL CQI : STD_LOGIC_VECTOR(6 DOWNTO 0); 
BEGIN
P_REG: PROCESS(CLK, RST) 
        BEGIN
         IF RST = '1' THEN   CQI <= "0000000";   
             ELSIF CLK'EVENT AND CLK = '1' THEN
                    IF CQI<110 THEN 
                    CQI <= CQI + 1;    
                    ELSE  CQI <= "0000000";  
                    END IF;     
         END IF;
          OUTY <= CQI ; 
        END PROCESS P_REG ; 
END  behav;