DDS.vhd

-- reference: "DDFS mit BROM" by Lothar Miller ( http://lothar-miller.de/s9y/archives/37-DDFS-mit-BROM.html)
library IEEE;
  use IEEE.std_logic_1164.all;
  use IEEE.numeric_std.all;
--------------------------------------------------
Entity DDS is
  generic (clock_frequency: integer:= 49152000   -- Hz : here enter main clock frequency
--------------------------------------------------
   Port (   
            CLK        : in  std_logic;
            FREQ_INC   : in  std_logic_vector (11 downto 0);
            BCK        : in  std_logic;
            DIN_CNT    : in  integer;
            DIN_CNT_MAX: in integer; 
            PHASE_INC : in std_logic_vector (11 downto 0);
            DOUT       : out std_logic_vector (31 downto 0) := (others => '0')
   end DDS;
--------------------------------------------------
Architecture BEHAVIOUR of DDS is
--------------------------------------------------
  signal RESULT   : signed (31 downto 0):= (others=>'0');
  --signal RESULT_TMP   : signed (31 downto 0);
  signal ACCUM    : unsigned (11 downto 0) := (others=>'0'); 
  signal ADDRESS  : integer range 0 to 4095 := 0;
  signal ADDRESS_TMP  : integer range 0 to 4095;
  signal ROMADDR  : integer range 0 to 4095 := 0;
  signal QUADRANT : std_logic := '0'; 
  signal QUADRANT_TMP : std_logic := '0'; 
  signal SIGN     : std_logic := '0';  
  signal SIGN_TMP : std_logic := '0';
  signal ACCUM_TMP: unsigned (11 downto 0) := (others=>'0');
  signal DOUT_TMP : std_logic_vector(31 downto 0):= (others=>'0');
type signal_shape_LUT is array(1023 downto 0) of std_logic_vector(31 downto 0); -- generated by MatLab-Script
constant sine_LUT: signal_shape_LUT := (
=> x"00000000",
=> x"002CCA1F",
=> x"00599438",
=> x"00865E43",
=> x"00B3283A",
=> x"00DFF214",
=> x"010CBBCC",
=> x"0139855B",
=> x"01664EB9",
=> x"019317E0",
=> x"01BFE0C9",
=> x"01ECA96C",
=> x"021971C4",
=> x"024639C8",
=> x"02730173",
=> x"029FC8BD",
=> x"02CC8F9F",
=> x"02F95612",
=> x"03261C11",
=> x"0352E192",
=> x"037FA690",
=> x"03AC6B04",
=> x"03D92EE7",
=> x"0405F232",
=> x"0432B4DE",
=> x"045F76E4",
=> x"048C383D",
=> x"04B8F8E2",
=> x"04E5B8CD",
=> x"051277F6",
=> x"053F3657",
=> x"056BF3E8",
=> x"0598B0A3",
=> x"05C56C81",
=> x"05F2277B",
=> x"061EE18A",
=> x"064B9AA8",
=> x"067852CC",
=> x"06A509F1",
=> x"06D1C00F",
=> x"06FE751F",
=> x"072B291C",
=> x"0757DBFD",
=> x"07848DBB",
=> x"07B13E51",
=> x"07DDEDB7",
=> x"080A9BE6",
=> x"083748D7",
=> x"0863F483",
=> x"08909EE4",
=> x"08BD47F2",
=> x"08E9EFA7",
=> x"091695FC",
=> x"09433AEA",
=> x"096FDE69",
=> x"099C8074",
=> x"09C92103",
=> x"09F5C00F",
=> x"0A225D92",
=> x"0A4EF984",
=> x"0A7B93DF",
=> x"0AA82C9B",
=> x"0AD4C3B3",
=> x"0B01591E",
=> x"0B2DECD6",
=> x"0B5A7ED5",
=> x"0B870F13",
=> x"0BB39D8A",
=> x"0BE02A32",
=> x"0C0CB505",
=> x"0C393DFB",
=> x"0C65C50F",
=> x"0C924A38",
=> x"0CBECD71",
=> x"0CEB4EB3",
=> x"0D17CDF5",
=> x"0D444B33",
=> x"0D70C664",
=> x"0D9D3F82",
=> x"0DC9B686",
=> x"0DF62B69",
=> x"0E229E24",
=> x"0E4F0EB1",
=> x"0E7B7D08",
=> x"0EA7E923",
=> x"0ED452FB",
=> x"0F00BA89",
=> x"0F2D1FC6",
=> x"0F5982AB",
=> x"0F85E332",
=> x"0FB24153",
=> x"0FDE9D08",
=> x"100AF64A",
=> x"10374D12",
=> x"1063A159",
=> x"108FF319",
=> x"10BC424A",
=> x"10E88EE5",
=> x"1114D8E5",
=> x"11412041",
=> x"116D64F4",
=> x"1199A6F6",
=> x"11C5E640",
=> x"11F222CC",
=> x"121E5C93",
=> x"124A938E",
=> x"1276C7B6",
=> x"12A2F905",
=> x"12CF2773",
=> x"12FB52FA",
=> x"13277B92",
=> x"1353A136",
=> x"137FC3DE",
=> x"13ABE383",
=> x"13D8001F",
=> x"140419AB",
=> x"14303020",
=> x"145C4377",
=> x"148853AA",
=> x"14B460B1",
=> x"14E06A86",
=> x"150C7122",
=> x"1538747F",
=> x"15647494",
=> x"1590715D",
=> x"15BC6AD1",
=> x"15E860EA",
=> x"161453A2",
=> x"164042F1",
=> x"166C2ED0",
=> x"1698173A",
=> x"16C3FC27",
=> x"16EFDD90",
=> x"171BBB6F",
=> x"174795BC",
=> x"17736C72",
=> x"179F3F89",
=> x"17CB0EFA",
=> x"17F6DABF",
=> x"1822A2D2",
=> x"184E672A",
=> x"187A27C2",
=> x"18A5E493",
=> x"18D19D95",
=> x"18FD52C3",
=> x"19290416",
=> x"1954B186",
=> x"19805B0D",
=> x"19AC00A5",
=> x"19D7A245",
=> x"1A033FE9",
=> x"1A2ED989",
=> x"1A5A6F1E",
=> x"1A8600A2",
=> x"1AB18E0D",
=> x"1ADD175A",
=> x"1B089C81",
=> x"1B341D7C",
=> x"1B5F9A44",
=> x"1B8B12D2",
=> x"1BB68720",
=> x"1BE1F726",
=> x"1C0D62DF",
=> x"1C38CA43",
=> x"1C642D4C",
=> x"1C8F8BF3",
=> x"1CBAE632",
=> x"1CE63C01",
=> x"1D118D5A",
=> x"1D3CDA36",
=> x"1D68228F",
=> x"1D93665E",
=> x"1DBEA59C",
=> x"1DE9E043",
=> x"1E15164C",
=> x"1E4047B0",
=> x"1E6B7468",
=> x"1E969C6E",
=> x"1EC1BFBC",
=> x"1EECDE4A",
=> x"1F17F812",
=> x"1F430D0E",
=> x"1F6E1D36",
=> x"1F992884",
=> x"1FC42EF1",
=> x"1FEF3077",
=> x"201A2D0F",
=> x"204524B2",
=> x"2070175B",
=> x"209B0501",
=> x"20C5ED9F",
=> x"20F0D12E",
=> x"211BAFA7",
=> x"21468904",
=> x"21715D3D",
=> x"219C2C4E",
=> x"21C6F62E",
=> x"21F1BAD7",
=> x"221C7A43",
=> x"2247346B",
=> x"2271E948",
=> x"229C98D5",
=> x"22C74309",
=> x"22F1E7DF",
=> x"231C8751",
=> x"23472156",
=> x"2371B5EA",
=> x"239C4505",
=> x"23C6CEA1",
=> x"23F152B7",
=> x"241BD140",
=> x"24464A37",
=> x"2470BD94",
=> x"249B2B52",
=> x"24C59368",
=> x"24EFF5D2",
=> x"251A5288",
=> x"2544A984",
=> x"256EFABF",
=> x"25994633",
=> x"25C38BD9",
=> x"25EDCBAA",
=> x"261805A1",
=> x"264239B7",
=> x"266C67E4",
=> x"26969023",
=> x"26C0B26E",
=> x"26EACEBD",
=> x"2714E50A",
=> x"273EF54F",
=> x"2768FF84",
=> x"279303A5",
=> x"27BD01A9",
=> x"27E6F98C",
=> x"2810EB45",
=> x"283AD6CF",
=> x"2864BC24",
=> x"288E9B3C",
=> x"28B87411",
=> x"28E2469D",
=> x"290C12DA",
=> x"2935D8C1",
=> x"295F984B",
=> x"29895172",
=> x"29B30430",
=> x"29DCB07E",
=> x"2A065655",
=> x"2A2FF5B0",
=> x"2A598E88",
=> x"2A8320D7",
=> x"2AACAC95",
=> x"2AD631BD",
=> x"2AFFB048",
=> x"2B292830",
=> x"2B52996F",
=> x"2B7C03FD",
=> x"2BA567D5",
=> x"2BCEC4F1",
=> x"2BF81B49",
=> x"2C216AD7",
=> x"2C4AB396",
=> x"2C73F57F",
=> x"2C9D308B",
=> x"2CC664B3",
=> x"2CEF91F3",
=> x"2D18B842",
=> x"2D41D79C",
=> x"2D6AEFF9",
=> x"2D940154",
=> x"2DBD0BA5",
=> x"2DE60EE7",
=> x"2E0F0B13",
=> x"2E380023",
=> x"2E60EE11",
=> x"2E89D4D6",
=> x"2EB2B46B",
=> x"2EDB8CCC",
=> x"2F045DF0",
=> x"2F2D27D3",
=> x"2F55EA6E",
=> x"2F7EA5BA",
=> x"2FA759B1",
=> x"2FD0064D",
=> x"2FF8AB87",
=> x"3021495A",
=> x"3049DFBF",
=> x"30726EB0",
=> x"309AF626",
=> x"30C3761B",
=> x"30EBEE8A",
=> x"31145F6B",
=> x"313CC8B9",
=> x"31652A6D",
=> x"318D8481",
=> x"31B5D6EF",
=> x"31DE21B0",
=> x"320664BF",
=> x"322EA015",
=> x"3256D3AC",
=> x"327EFF7E",
=> x"32A72385",
=> x"32CF3FB9",
=> x"32F75416",
=> x"331F6095",
=> x"3347652F",
=> x"336F61E0",
=> x"3397569F",
=> x"33BF4368",
=> x"33E72834",
=> x"340F04FD",
=> x"3436D9BD",
=> x"345EA66D",
=> x"34866B08",
=> x"34AE2788",
=> x"34D5DBE5",
=> x"34FD881B",
=> x"35252C22",
=> x"354CC7F6",
=> x"35745B8F",
=> x"359BE6E8",
=> x"35C369FA",
=> x"35EAE4C0",
=> x"36125733",
=> x"3639C14E",
=> x"36612309",
=> x"36887C60",
=> x"36AFCD4C",
=> x"36D715C6",
=> x"36FE55CA",
=> x"37258D50",
=> x"374CBC53",
=> x"3773E2CD",
=> x"379B00B8",
=> x"37C2160D",
=> x"37E922C6",
=> x"381026DF",
=> x"38372250",
=> x"385E1513",
=> x"3884FF23",
=> x"38ABE079",
=> x"38D2B910",
=> x"38F988E2",
=> x"39204FE8",
=> x"39470E1D",
=> x"396DC37A",
=> x"39946FF9",
=> x"39BB1396",
=> x"39E1AE49",
=> x"3A08400C",
=> x"3A2EC8DB",
=> x"3A5548AE",
=> x"3A7BBF80",
=> x"3AA22D4B",
=> x"3AC89209",
=> x"3AEEEDB4",
=> x"3B154046",
=> x"3B3B89BA",
=> x"3B61CA08",
=> x"3B88012C",
=> x"3BAE2F20",
=> x"3BD453DD",
=> x"3BFA6F5E",
=> x"3C20819D",
=> x"3C468A94",
=> x"3C6C8A3C",
=> x"3C928092",
=> x"3CB86D8D",
=> x"3CDE5129",
=> x"3D042B5F",
=> x"3D29FC2B",
=> x"3D4FC385",
=> x"3D758169",
=> x"3D9B35D0",
=> x"3DC0E0B4",
=> x"3DE68210",
=> x"3E0C19DE",
=> x"3E31A818",
=> x"3E572CB8",
=> x"3E7CA7B9",
=> x"3EA21914",
=> x"3EC780C5",
=> x"3EECDEC4",
=> x"3F12330D",
=> x"3F377D9A",
=> x"3F5CBE64",
=> x"3F81F567",
=> x"3FA7229C",
=> x"3FCC45FD",
=> x"3FF15F86",
=> x"40166F2F",
=> x"403B74F4",
=> x"406070CF",
=> x"408562BA",
=> x"40AA4AAF",
=> x"40CF28A9",
=> x"40F3FCA2",
=> x"4118C694",
=> x"413D8679",
=> x"41623C4D",
=> x"4186E808",
=> x"41AB89A6",
=> x"41D02122",
=> x"41F4AE74",
=> x"42193198",
=> x"423DAA88",
=> x"4262193E",
=> x"42867DB6",
=> x"42AAD7E8",
=> x"42CF27D0",
=> x"42F36D67",
=> x"4317A8A9",
=> x"433BD990",
=> x"43600016",
=> x"43841C35",
=> x"43A82DE8",
=> x"43CC352A",
=> x"43F031F4",
=> x"44142442",
=> x"44380C0E",
=> x"445BE952",
=> x"447FBC08",
=> x"44A3842B",
=> x"44C741B7",
=> x"44EAF4A4",
=> x"450E9CEE",
=> x"45323A8E",
=> x"4555CD81",
=> x"457955BF",
=> x"459CD345",
=> x"45C0460B",
=> x"45E3AE0D",
=> x"46070B45",
=> x"462A5DAE",
=> x"464DA542",
=> x"4670E1FC",
=> x"469413D6",
=> x"46B73ACB",
=> x"46DA56D6",
=> x"46FD67F1",
=> x"47206E16",
=> x"47436941",
=> x"4766596C",
=> x"47893E91",
=> x"47AC18AB",
=> x"47CEE7B5",
=> x"47F1ABAA",
=> x"48146483",
=> x"4837123C",
=> x"4859B4D0",
=> x"487C4C38",
=> x"489ED870",
=> x"48C15972",
=> x"48E3CF39",
=> x"490639BF",
=> x"49289900",
=> x"494AECF6",
=> x"496D359C",
=> x"498F72EC",
=> x"49B1A4E1",
=> x"49D3CB76",
=> x"49F5E6A5",
=> x"4A17F66A",
=> x"4A39FABF",
=> x"4A5BF39F",
=> x"4A7DE104",
=> x"4A9FC2EA",
=> x"4AC1994A",
=> x"4AE36421",
=> x"4B052368",
=> x"4B26D71A",
=> x"4B487F33",
=> x"4B6A1BAD",
=> x"4B8BAC83",
=> x"4BAD31AF",
=> x"4BCEAB2D",
=> x"4BF018F7",
=> x"4C117B08",
=> x"4C32D15B",
=> x"4C541BEC",
=> x"4C755AB4",
=> x"4C968DAE",
=> x"4CB7B4D6",
=> x"4CD8D026",
=> x"4CF9DF9A",
=> x"4D1AE32C",
=> x"4D3BDAD6",
=> x"4D5CC695",
=> x"4D7DA663",
=> x"4D9E7A3A",
=> x"4DBF4216",
=> x"4DDFFDF2",
=> x"4E00ADC8",
=> x"4E215194",
=> x"4E41E951",
=> x"4E6274F8",
=> x"4E82F487",
=> x"4EA367F7",
=> x"4EC3CF43",
=> x"4EE42A67",
=> x"4F04795D",
=> x"4F24BC21",
=> x"4F44F2AD",
=> x"4F651CFD",
=> x"4F853B0B",
=> x"4FA54CD3",
=> x"4FC55250",
=> x"4FE54B7C",
=> x"50053853",
=> x"502518D0",
=> x"5044ECED",
=> x"5064B4A7",
=> x"50846FF8",
=> x"50A41EDB",
=> x"50C3C14B",
=> x"50E35744",
=> x"5102E0C0",
=> x"51225DBB",
=> x"5141CE30",
=> x"5161321A",
=> x"51808974",
=> x"519FD439",
=> x"51BF1264",
=> x"51DE43F2",
=> x"51FD68DC",
=> x"521C811E",
=> x"523B8CB3",
=> x"525A8B97",
=> x"52797DC4",
=> x"52986336",
=> x"52B73BE8",
=> x"52D607D6",
=> x"52F4C6FA",
=> x"53137950",
=> x"53321ED3",
=> x"5350B77E",
=> x"536F434E",
=> x"538DC23B",
=> x"53AC3444",
=> x"53CA9961",
=> x"53E8F190",
=> x"54073CCA",
=> x"54257B0C",
=> x"5443AC51",
=> x"5461D094",
=> x"547FE7D1",
=> x"549DF202",
=> x"54BBEF23",
=> x"54D9DF30",
=> x"54F7C224",
=> x"551597FB",
=> x"553360AF",
=> x"55511C3C",
=> x"556ECA9E",
=> x"558C6BCF",
=> x"55A9FFCC",
=> x"55C78690",
=> x"55E50016",
=> x"56026C5A",
=> x"561FCB57",
=> x"563D1D08",
=> x"565A616A",
=> x"56779877",
=> x"5694C22C",
=> x"56B1DE83",
=> x"56CEED78",
=> x"56EBEF06",
=> x"5708E32A",
=> x"5725C9DE",
=> x"5742A31F",
=> x"575F6EE7",
=> x"577C2D33",
=> x"5798DDFD",
=> x"57B58142",
=> x"57D216FD",
=> x"57EE9F2A",
=> x"580B19C3",
=> x"582786C6",
=> x"5843E62D",
=> x"586037F3",
=> x"587C7C16",
=> x"5898B290",
=> x"58B4DB5D",
=> x"58D0F678",
=> x"58ED03DE",
=> x"59090389",
=> x"5924F576",
=> x"5940D9A1",
=> x"595CB004",
=> x"5978789C",
=> x"59943364",
=> x"59AFE059",
=> x"59CB7F75",
=> x"59E710B5",
=> x"5A029415",
=> x"5A1E098F",
=> x"5A397120",
=> x"5A54CAC4",
=> x"5A701676",
=> x"5A8B5432",
=> x"5AA683F5",
=> x"5AC1A5B9",
=> x"5ADCB97A",
=> x"5AF7BF35",
=> x"5B12B6E6",
=> x"5B2DA087",
=> x"5B487C15",
=> x"5B63498C",
=> x"5B7E08E8",
=> x"5B98BA24",
=> x"5BB35D3D",
=> x"5BCDF22D",
=> x"5BE878F2",
=> x"5C02F187",
=> x"5C1D5BE8",
=> x"5C37B811",
=> x"5C5205FE",
=> x"5C6C45AB",
=> x"5C867713",
=> x"5CA09A33",
=> x"5CBAAF06",
=> x"5CD4B589",
=> x"5CEEADB8",
=> x"5D08978F",
=> x"5D227309",
=> x"5D3C4022",
=> x"5D55FED7",
=> x"5D6FAF24",
=> x"5D895105",
=> x"5DA2E475",
=> x"5DBC6971",
=> x"5DD5DFF5",
=> x"5DEF47FD",
=> x"5E08A184",
=> x"5E21EC88",
=> x"5E3B2904",
=> x"5E5456F4",
=> x"5E6D7655",
=> x"5E868722",
=> x"5E9F8958",
=> x"5EB87CF3",
=> x"5ED161EE",
=> x"5EEA3847",
=> x"5F02FFF8",
=> x"5F1BB900",
=> x"5F346358",
=> x"5F4CFEFF",
=> x"5F658BF0",
=> x"5F7E0A27",
=> x"5F9679A0",
=> x"5FAEDA58",
=> x"5FC72C4B",
=> x"5FDF6F75",
=> x"5FF7A3D2",
=> x"600FC95F",
=> x"6027E018",
=> x"603FE7F9",
=> x"6057E0FF",
=> x"606FCB25",
=> x"6087A669",
=> x"609F72C6",
=> x"60B73039",
=> x"60CEDEBE",
=> x"60E67E51",
=> x"60FE0EEF",
=> x"61159094",
=> x"612D033D",
=> x"614466E6",
=> x"615BBB8B",
=> x"61730128",
=> x"618A37BB",
=> x"61A15F3F",
=> x"61B877B2",
=> x"61CF810E",
=> x"61E67B52",
=> x"61FD6678",
=> x"6214427F",
=> x"622B0F61",
=> x"6241CD1D",
=> x"62587BAD",
=> x"626F1B0F",
=> x"6285AB40",
=> x"629C2C3B",
=> x"62B29DFD",
=> x"62C90083",
=> x"62DF53C9",
=> x"62F597CD",
=> x"630BCC89",
=> x"6321F1FC",
=> x"63380821",
=> x"634E0EF6",
=> x"63640676",
=> x"6379EE9E",
=> x"638FC76C",
=> x"63A590DB",
=> x"63BB4AE8",
=> x"63D0F591",
=> x"63E690D1",
=> x"63FC1CA5",
=> x"6411990A",
=> x"642705FC",
=> x"643C6379",
=> x"6451B17D",
=> x"6466F004",
=> x"647C1F0C",
=> x"64913E92",
=> x"64A64E90",
=> x"64BB4F06",
=> x"64D03FEF",
=> x"64E52148",
=> x"64F9F30E",
=> x"650EB53E",
=> x"652367D4",
=> x"65380ACE",
=> x"654C9E28",
=> x"656121DF",
=> x"657595EF",
=> x"6589FA56",
=> x"659E4F11",
=> x"65B2941C",
=> x"65C6C974",
=> x"65DAEF16",
=> x"65EF04FF",
=> x"66030B2D",
=> x"6617019B",
=> x"662AE846",
=> x"663EBF2D",
=> x"6652864B",
=> x"66663D9D",
=> x"6679E521",
=> x"668D7CD3",
=> x"66A104B1",
=> x"66B47CB7",
=> x"66C7E4E3",
=> x"66DB3D31",
=> x"66EE859E",
=> x"6701BE28",
=> x"6714E6CC",
=> x"6727FF85",
=> x"673B0853",
=> x"674E0131",
=> x"6760EA1D",
=> x"6773C313",
=> x"67868C12",
=> x"67994515",
=> x"67ABEE1B",
=> x"67BE8720",
=> x"67D11021",
=> x"67E3891B",
=> x"67F5F20D",
=> x"68084AF2",
=> x"681A93C8",
=> x"682CCC8C",
=> x"683EF53B",
=> x"68510DD3",
=> x"68631651",
=> x"68750EB1",
=> x"6886F6F2",
=> x"6898CF10",
=> x"68AA9709",
=> x"68BC4EDA",
=> x"68CDF67F",
=> x"68DF8DF8",
=> x"68F11540",
=> x"69028C55",
=> x"6913F334",
=> x"692549DB",
=> x"69369047",
=> x"6947C675",
=> x"6958EC63",
=> x"696A020E",
=> x"697B0773",
=> x"698BFC90",
=> x"699CE162",
=> x"69ADB5E7",
=> x"69BE7A1B",
=> x"69CF2DFD",
=> x"69DFD189",
=> x"69F064BE",
=> x"6A00E798",
=> x"6A115A16",
=> x"6A21BC34",
=> x"6A320DEF",
=> x"6A424F47",
=> x"6A528037",
=> x"6A62A0BE",
=> x"6A72B0D9",
=> x"6A82B085",
=> x"6A929FC0",
=> x"6AA27E88",
=> x"6AB24CDA",
=> x"6AC20AB3",
=> x"6AD1B812",
=> x"6AE154F4",
=> x"6AF0E156",
=> x"6B005D36",
=> x"6B0FC892",
=> x"6B1F2367",
=> x"6B2E6DB3",
=> x"6B3DA773",
=> x"6B4CD0A5",
=> x"6B5BE948",
=> x"6B6AF158",
=> x"6B79E8D3",
=> x"6B88CFB7",
=> x"6B97A601",
=> x"6BA66BB0",
=> x"6BB520C0",
=> x"6BC3C531",
=> x"6BD258FF",
=> x"6BE0DC28",
=> x"6BEF4EAA",
=> x"6BFDB083",
=> x"6C0C01B0",
=> x"6C1A4230",
=> x"6C287200",
=> x"6C36911D",
=> x"6C449F87",
=> x"6C529D3A",
=> x"6C608A34",
=> x"6C6E6674",
=> x"6C7C31F7",
=> x"6C89ECBA",
=> x"6C9796BD",
=> x"6CA52FFC",
=> x"6CB2B877",
=> x"6CC03029",
=> x"6CCD9712",
=> x"6CDAED30",
=> x"6CE83280",
=> x"6CF56700",
=> x"6D028AAF",
=> x"6D0F9D8A",
=> x"6D1C9F8F",
=> x"6D2990BC",
=> x"6D367110",
=> x"6D434087",
=> x"6D4FFF21",
=> x"6D5CACDC",
=> x"6D6949B4",
=> x"6D75D5AA",
=> x"6D8250B9",
=> x"6D8EBAE1",
=> x"6D9B1420",
=> x"6DA75C73",
=> x"6DB393DA",
=> x"6DBFBA51",
=> x"6DCBCFD7",
=> x"6DD7D46A",
=> x"6DE3C809",
=> x"6DEFAAB1",
=> x"6DFB7C61",
=> x"6E073D17",
=> x"6E12ECD0",
=> x"6E1E8B8C",
=> x"6E2A1949",
=> x"6E359604",
=> x"6E4101BB",
=> x"6E4C5C6E",
=> x"6E57A61A",
=> x"6E62DEBE",
=> x"6E6E0658",
=> x"6E791CE6",
=> x"6E842266",
=> x"6E8F16D7",
=> x"6E99FA37",
=> x"6EA4CC85",
=> x"6EAF8DBE",
=> x"6EBA3DE1",
=> x"6EC4DCED",
=> x"6ECF6ADF",
=> x"6ED9E7B6",
=> x"6EE45371",
=> x"6EEEAE0E",
=> x"6EF8F78B",
=> x"6F032FE7",
=> x"6F0D5720",
=> x"6F176D34",
=> x"6F217223",
=> x"6F2B65EA",
=> x"6F354887",
=> x"6F3F19FB",
=> x"6F48DA42",
=> x"6F52895B",
=> x"6F5C2745",
=> x"6F65B3FF",
=> x"6F6F2F87",
=> x"6F7899DB",
=> x"6F81F2FA",
=> x"6F8B3AE3",
=> x"6F947193",
=> x"6F9D970B",
=> x"6FA6AB47",
=> x"6FAFAE48",
=> x"6FB8A00B",
=> x"6FC1808F",
=> x"6FCA4FD3",
=> x"6FD30DD6",
=> x"6FDBBA95",
=> x"6FE45610",
=> x"6FECE046",
=> x"6FF55934",
=> x"6FFDC0DA",
=> x"70061737",
=> x"700E5C49",
=> x"7016900F",
=> x"701EB287",
=> x"7026C3B1",
=> x"702EC38B",
=> x"7036B213",
=> x"703E8F4A",
=> x"70465B2C",
=> x"704E15BA",
=> x"7055BEF2",
=> x"705D56D3",
=> x"7064DD5C",
=> x"706C528B",
=> x"7073B660",
=> x"707B08D8",
=> x"708249F4",
=> x"708979B2",
=> x"70909811",
=> x"7097A50F",
=> x"709EA0AD",
=> x"70A58AE7",
=> x"70AC63BF",
=> x"70B32B32",
=> x"70B9E13F",
=> x"70C085E5",
=> x"70C71925",
=> x"70CD9AFB",
=> x"70D40B68",
=> x"70DA6A6A",
=> x"70E0B800",
=> x"70E6F42A",
=> x"70ED1EE7",
=> x"70F33835",
=> x"70F94013",
=> x"70FF3681",
=> x"71051B7E",
=> x"710AEF08",
=> x"7110B120",
=> x"711661C3",
=> x"711C00F2",
=> x"71218EAA",
=> x"71270AED",
=> x"712C75B7",
=> x"7131CF0A",
=> x"713716E3",
=> x"713C4D43",
=> x"71417227",
=> x"71468591",
=> x"714B877E",
=> x"715077ED",
=> x"715556DF",
=> x"715A2453",
=> x"715EE047",
=> x"71638ABB",
=> x"716823AE",
=> x"716CAB20",
=> x"7171210F",
=> x"7175857C",
=> x"7179D865",
=> x"717E19CA",
=> x"718249AA",
=> x"71866804",
=> x"718A74D8",
=> x"718E7026",
=> x"719259EC",
=> x"7196322A",
=> x"7199F8DF",
=> x"719DAE0C",
=> x"71A151AE",
=> x"71A4E3C6",
=> x"71A86453",
=> x"71ABD355",
=> x"71AF30CB",
=> x"71B27CB5",
=> x"71B5B711",
=> x"71B8DFE0",
=> x"71BBF721",
=> x"71BEFCD4",
=> x"71C1F0F8",
=> x"71C4D38C",
=> x"71C7A491",
=> x"71CA6405",
=> x"71CD11E9",
=> x"71CFAE3B",
=> x"71D238FC",
=> x"71D4B22C",
=> x"71D719C9",
=> x"71D96FD3",
=> x"71DBB44A",
=> x"71DDE72E",
=> x"71E0087F",
=> x"71E2183B",
=> x"71E41663",
=> x"71E602F7",
=> x"71E7DDF5",
=> x"71E9A75F",
=> x"71EB5F32",
=> x"71ED0570",
=> x"71EE9A18",
=> x"71F01D2A",
=> x"71F18EA6",
=> x"71F2EE8A",
=> x"71F43CD8",
=> x"71F5798E",
=> x"71F6A4AE",
=> x"71F7BE35",
=> x"71F8C625",
=> x"71F9BC7E",
=> x"71FAA13E",
=> x"71FB7466",
=> x"71FC35F6",
=> x"71FCE5EE",
=> x"71FD844D",
=> x"71FE1114",
=> x"71FE8C41",
=> x"71FEF5D7",
=> x"71FF4DD3",
=> x"71FF9437",
=> x"71FFC902",
=> x"71FFEC33",
=> x"71FFFDCC",
others => x"00000000"
   -- phase accumulator  
   process begin
     wait until rising_edge(CLK);
     if BCK = '1'then
        if (DIN_CNT = DIN_CNT_MAX-1) then
           ACCUM_TMP <= ACCUM_TMP + unsigned(FREQ_INC);
           ACCUM <= ACCUM_TMP + unsigned(PHASE_INC);
        end if;
     end if; 
   end process;
   -- BROM      
   process begin
     wait until rising_edge(CLK);
     if BCK = '1' then
        if (DIN_CNT = DIN_CNT_MAX-1) then
           ROMADDR <= ADDRESS;     -- clocked address --> BRAM
        end if;
     end if;
   end process;
   -- 1 clock cycle latency caused by BROM
   process begin
     wait until rising_edge(CLK);
     if BCK = '1' then
        if (DIN_CNT = DIN_CNT_MAX-1) then
           SIGN    <= ACCUM(ACCUM'left);
        end if;
     end if;
   end process;
   QUADRANT <= ACCUM(ACCUM'left-1);
   RESULT   <= signed(sine_LUT(ROMADDR));
   ADDRESS  <=  to_integer(ACCUM(ACCUM'high-2 downto ACCUM'high-11)) when (QUADRANT = '0') else
        1023-to_integer(ACCUM(ACCUM'high-2 downto ACCUM'high-11));
   DOUT <= std_logic_vector(RESULT) when (SIGN = '1') else
        std_logic_vector(0-RESULT) ;
end BEHAVIOUR;
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