_primary.vhd

altera fpga verilog 设计的基于查找表的DCT程序及zigzag扫描程序

library verilog;
use verilog.vl_types.all;
entity dctu is
    generic(
        coef_width      : integer := 16;
        di_width        : integer := 8;
        v               : integer := 0;
        u               : integer := 0
    );
    port(
        clk             : in     vl_logic;
        ena             : in     vl_logic;
        ddgo            : in     vl_logic;
        x               : in     vl_logic_vector(2 downto 0);
        y               : in     vl_logic_vector(2 downto 0);
        ddin            : in     vl_logic_vector;
        dout            : out    vl_logic_vector(11 downto 0)
    );
end dctu;