cun1.vhd

基于vhdl的qpsk算法研究与性能测试

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_ARITH.ALL;
USE ieee.std_logic_unsigned.all;
 ENTITY  CUN1  IS
   PORT(
        CPC :IN STD_LOGIC;
        ID  :IN STD_LOGIC_vector(5 DOWNTO 0);
         N0,N1,N2,N3,N4,N5,N6,N7  :OUT STD_LOGIC
       );
   END CUN1;
ARCHITECTURE A OF CUN1 IS
SIGNAL N :STD_LOGIC_VECTOR(7 DOWNTO 0);
BEGIN
     PROCESS(CPC)
begin
IF(CPC'EVENT AND CPC='1') THEN 
         CASE  ID  IS
            WHEN  "000000"=>N<="01111111";
            WHEN  "000001"=>N<="10001100";
            WHEN  "000010"=>N<="10011000";
            WHEN  "000011"=>N<="10100100";
            WHEN  "000100"=>N<="10110000";
            WHEN  "000101"=>N<="10111011";
            WHEN  "000110"=>N<="11000110";
            WHEN  "000111"=>N<="11010000";
            WHEN  "001000"=>N<="11011010";
            WHEN  "001001"=>N<="11100010";
            WHEN  "001010"=>N<="11101001";
            WHEN  "001011"=>N<="11110000";
            WHEN  "001100"=>N<="11110101";
            WHEN  "001101"=>N<="11111001";
            WHEN  "001110"=>N<="11111101";
            WHEN  "001111"=>N<="11111110";
            WHEN  "010000"=>N<="11111111";
            WHEN  "010001"=>N<="11111110";
            WHEN  "010010"=>N<="11111101";
            WHEN  "010011"=>N<="11111001";
            WHEN  "010100"=>N<="11110101";
            WHEN  "010101"=>N<="11110000";
            WHEN  "010110"=>N<="11101001";
            WHEN  "010111"=>N<="11100010";
            WHEN  "011000"=>N<="11011010";
            WHEN  "011001"=>N<="11010000";
            WHEN  "011010"=>N<="11000110";
            WHEN  "011011"=>N<="10111011";
            WHEN  "011100"=>N<="10110000";
            WHEN  "011101"=>N<="10100100";
            WHEN  "011110"=>N<="10011000";
            WHEN  "011111"=>N<="10001100";
            WHEN  "100000"=>N<="01111111";
            WHEN  "100001"=>N<="01110010";
            WHEN  "100010"=>N<="01100110";
            WHEN  "100011"=>N<="01011010";
            WHEN  "100100"=>N<="01001110";
            WHEN  "100101"=>N<="01000011";
            WHEN  "100110"=>N<="00111000";
            WHEN  "100111"=>N<="00101110";
            WHEN  "101000"=>N<="00100100";
            WHEN  "101001"=>N<="00011100";
            WHEN  "101010"=>N<="00010101";
            WHEN  "101011"=>N<="00001110";
            WHEN  "101100"=>N<="00001001";
            WHEN  "101101"=>N<="00000101";
            WHEN  "101110"=>N<="00000001";
            WHEN  "101111"=>N<="00000000";
            WHEN  "110000"=>N<="00000000";
            WHEN  "110001"=>N<="00000000";
            WHEN  "110010"=>N<="00000001";
            WHEN  "110011"=>N<="00000101";
            WHEN  "110100"=>N<="00001001";
            WHEN  "110101"=>N<="00001110";
            WHEN  "110110"=>N<="00010101";
            WHEN  "110111"=>N<="00011100";
            WHEN  "111000"=>N<="00100100";
            WHEN  "111001"=>N<="00101110";
            WHEN  "111010"=>N<="00111000";
            WHEN  "111011"=>N<="01000011";
            WHEN  "111100"=>N<="01001110";
            WHEN  "111101"=>N<="01011010";
            WHEN  "111110"=>N<="01100110";
            when others=>N<="01110010";
end case;
END IF;
end process;
N0<=N(0);
N1<=N(1);
N2<=N(2);
N3<=N(3);
N4<=N(4);
N5<=N(5);
N6<=N(6);
N7<=N(7);
end A;