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MROD_X_In

WordCounter

Documentation for architecture MROD_X_In/WordCounter/a0

VHDL Contents

    1  -- EASE/HDL begin --------------------------------------------------------------
    2  -- 
    3  -- Architecture 'a0' of entity 'WordCounter'.
    4  -- 
    5  --------------------------------------------------------------------------------
    6  -- 
    7  -- Copy of the interface declaration:
    8  -- 
    9  --   generic(
   10  --     n           :  positive := 12;
   11  --     PresetValue :  positive := 2);
   12  --   port(
   13  --     Clear : in     std_logic;
   14  --     Clk   : in     std_logic;
   15  --     Inc   : in     std_logic;
   16  --     Q     : out    std_logic_Vector(n-1 downto 0);
   17  --     Rst_n : in     std_logic);
   18  -- 
   19  -- EASE/HDL end ----------------------------------------------------------------
   20  
   21  architecture a0 of WordCounter is
   22  
   23  BEGIN
   24     Process (Clk, Rst_n)
   25        Variable Cnt: Unsigned(n - 1 Downto 0);
   26     Begin
   27        If Rst_n = '0' Then
   28           Cnt := (Others => '0');
   29        ElsIf Rising_Edge (Clk) Then
   30           If Clear = '1' Then
   31              Cnt := To_Unsigned(PresetValue,n);
   32           ElsIf Inc = '1' Then
   33              Cnt := Cnt + 1;
   34           End If;
   35        End If;
   36        Q <= Std_Logic_Vector(Cnt);
   37     End Process;
   38  end architecture a0 ; -- of WordCounter
   39