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divadnauj |
-----------------------------------------------------------------------------
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library ieee;
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use ieee.std_logic_1164.all;
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use ieee.numeric_std.all;
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use work.log2_pkg.all;
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entity log2_luts_64x23b is
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generic (SEG : natural := 64);
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port (i_lutA_addr : in std_logic_vector(4 downto 0); -- f_log2(SEG)-1 downto 0)
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i_lutB_addr : in std_logic_vector(4 downto 0); -- f_log2(SEG)-1 downto 0)
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o_lutA : out std_logic_vector(22 downto 0);
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o_lutB : out std_logic_vector(22 downto 0));
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end entity;
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architecture rtl of log2_luts_64x23b is
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signal s_lutA_addr :integer;
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signal s_lutB_addr :integer;
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begin
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s_lutA_addr <= to_integer(unsigned(i_lutA_addr));
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s_lutB_addr <= to_integer(unsigned(i_lutB_addr));
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luts: process(s_lutA_addr, s_lutB_addr) -- i_lutA_addr : in std_logic_vector(3 downto 0);
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begin
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case s_lutA_addr is
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when 0 => o_lutA <= "00000000000000000000000";
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when 1 => o_lutA <= "00000011010111110010111";
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when 2 => o_lutA <= "00000110011001011010000";
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when 3 => o_lutA <= "00001001000110100100001";
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when 4 => o_lutA <= "00001011100000011011000";
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when 5 => o_lutA <= "00001101101000000010010";
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when 6 => o_lutA <= "00001111011110011000001";
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when 7 => o_lutA <= "00010001000100010110001";
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when 8 => o_lutA <= "00010010011010110001011";
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when 9 => o_lutA <= "00010011100010011010110";
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when 10=> o_lutA <= "00010100011100000000001";
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when 11=> o_lutA <= "00010101001000001011101";
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when 12=> o_lutA <= "00010101100111100100111";
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when 13=> o_lutA <= "00010101111010110000100";
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when 14=> o_lutA <= "00010110000010010001000";
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when 15=> o_lutA <= "00010101111110100110100";
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when 16 => o_lutA <= "00010101110000001111000";
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when 17 => o_lutA <= "00010101010111100110111";
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when 18 => o_lutA <= "00010100110101001000100";
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when 19 => o_lutA <= "00010100001001001100111";
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when 20 => o_lutA <= "00010011010100001011101";
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when 21 => o_lutA <= "00010010010110011010111";
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when 22 => o_lutA <= "00010001010000001111100";
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when 23 => o_lutA <= "00010000000001111101010";
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when 24 => o_lutA <= "00001110101011110110110";
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when 25 => o_lutA <= "00001101001110001110000";
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when 26=> o_lutA <= "00001011101001010011011";
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when 27=> o_lutA <= "00001001111101010111001";
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when 28=> o_lutA <= "00001000001010101000010";
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when 29=> o_lutA <= "00000110010001010101001";
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when 30=> o_lutA <= "00000100010001101011011";
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when 31=> o_lutA <= "00000010001011111000000";
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when others => o_lutA <= "00000000000000000000000";
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end case;
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case s_lutB_addr is
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when 0 => o_lutB <= "00000001101110111011100";
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when 1 => o_lutB <= "00000100111011001111000";
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when 2 => o_lutB <= "00000111110010011110000";
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when 3 => o_lutB <= "00001010010101110101101";
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when 4 => o_lutB <= "00001100100110011100101";
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when 5 => o_lutB <= "00001110100101010011101";
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when 6 => o_lutB <= "00010000010011010110110";
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when 7 => o_lutB <= "00010001110001011100111";
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when 8 => o_lutB <= "00010011000000011001011";
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when 9 => o_lutB <= "00010100000000111011010";
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when 10=> o_lutB <= "00010100110011101110100";
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when 11=> o_lutB <= "00010101011001011100010";
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when 12=> o_lutB <= "00010101110010101010010";
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when 13=> o_lutB <= "00010101111111111100001";
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when 14=> o_lutB <= "00010110000001110011010";
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when 15=> o_lutB <= "00010101111000101110101";
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when 16 => o_lutB <= "00010101100101001011010";
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when 17 => o_lutB <= "00010101000111100100111";
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when 18 => o_lutB <= "00010100100000010100111";
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when 19 => o_lutB <= "00010011101111110011101";
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when 20 => o_lutB <= "00010010110110010111111";
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when 21 => o_lutB <= "00010001110100010111010";
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when 22 => o_lutB <= "00010000101010000110000";
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when 23 => o_lutB <= "00001111010111110111011";
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when 24 => o_lutB <= "00001101111101111101101";
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when 25 => o_lutB <= "00001100011100101001111";
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when 26=> o_lutB <= "00001010110100001100100";
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when 27=> o_lutB <= "00001001000100110101001";
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when 28=> o_lutB <= "00000111001110110010011";
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when 29=> o_lutB <= "00000101010010010010010";
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when 30=> o_lutB <= "00000011001111100010001";
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when 31=> o_lutB <= "00000001000110101110101";
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when others => o_lutB <= "00000000000000000000000";
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end case;
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end process;
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end rtl;
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