dds.vhd

用VHDL语言实现DDS直接数字频率合成器的设计

				when x"028a" => data<=x"20ce";
				when x"028b" => data<=x"20d7";
				when x"028c" => data<=x"20df";
				when x"028d" => data<=x"20e7";
				when x"028e" => data<=x"20f0";
				when x"028f" => data<=x"20f8";
				when x"0290" => data<=x"2100";
				when x"0291" => data<=x"2108";
				when x"0292" => data<=x"2110";
				when x"0293" => data<=x"2119";
				when x"0294" => data<=x"2121";
				when x"0295" => data<=x"2129";
				when x"0296" => data<=x"2131";
				when x"0297" => data<=x"2139";
				when x"0298" => data<=x"2141";
				when x"0299" => data<=x"2149";
				when x"029a" => data<=x"2151";
				when x"029b" => data<=x"2159";
				when x"029c" => data<=x"2161";
				when x"029d" => data<=x"2169";
				when x"029e" => data<=x"2171";
				when x"029f" => data<=x"2179";
				when x"02a0" => data<=x"2181";
				when x"02a1" => data<=x"2189";
				when x"02a2" => data<=x"2191";
				when x"02a3" => data<=x"2198";
				when x"02a4" => data<=x"21a0";
				when x"02a5" => data<=x"21a8";
				when x"02a6" => data<=x"21b0";
				when x"02a7" => data<=x"21b7";
				when x"02a8" => data<=x"21bf";
				when x"02a9" => data<=x"21c7";
				when x"02aa" => data<=x"21cf";
				when x"02ab" => data<=x"21d6";
				when x"02ac" => data<=x"21de";
				when x"02ad" => data<=x"21e6";
				when x"02ae" => data<=x"21ed";
				when x"02af" => data<=x"21f5";
				when x"02b0" => data<=x"21fc";
				when x"02b1" => data<=x"2204";
				when x"02b2" => data<=x"220b";
				when x"02b3" => data<=x"2213";
				when x"02b4" => data<=x"221a";
				when x"02b5" => data<=x"2222";
				when x"02b6" => data<=x"2229";
				when x"02b7" => data<=x"2231";
				when x"02b8" => data<=x"2238";
				when x"02b9" => data<=x"2240";
				when x"02ba" => data<=x"2247";
				when x"02bb" => data<=x"224e";
				when x"02bc" => data<=x"2256";
				when x"02bd" => data<=x"225d";
				when x"02be" => data<=x"2264";
				when x"02bf" => data<=x"226b";
				when x"02c0" => data<=x"2273";
				when x"02c1" => data<=x"227a";
				when x"02c2" => data<=x"2281";
				when x"02c3" => data<=x"2288";
				when x"02c4" => data<=x"228f";
				when x"02c5" => data<=x"2297";
				when x"02c6" => data<=x"229e";
				when x"02c7" => data<=x"22a5";
				when x"02c8" => data<=x"22ac";
				when x"02c9" => data<=x"22b3";
				when x"02ca" => data<=x"22ba";
				when x"02cb" => data<=x"22c1";
				when x"02cc" => data<=x"22c8";
				when x"02cd" => data<=x"22cf";
				when x"02ce" => data<=x"22d6";
				when x"02cf" => data<=x"22dd";
				when x"02d0" => data<=x"22e4";
				when x"02d1" => data<=x"22eb";
				when x"02d2" => data<=x"22f1";
				when x"02d3" => data<=x"22f8";
				when x"02d4" => data<=x"22ff";
				when x"02d5" => data<=x"2306";
				when x"02d6" => data<=x"230d";
				when x"02d7" => data<=x"2314";
				when x"02d8" => data<=x"231a";
				when x"02d9" => data<=x"2321";
				when x"02da" => data<=x"2328";
				when x"02db" => data<=x"232e";
				when x"02dc" => data<=x"2335";
				when x"02dd" => data<=x"233c";
				when x"02de" => data<=x"2342";
				when x"02df" => data<=x"2349";
				when x"02e0" => data<=x"234f";
				when x"02e1" => data<=x"2356";
				when x"02e2" => data<=x"235c";
				when x"02e3" => data<=x"2363";
				when x"02e4" => data<=x"2369";
				when x"02e5" => data<=x"2370";
				when x"02e6" => data<=x"2376";
				when x"02e7" => data<=x"237d";
				when x"02e8" => data<=x"2383";
				when x"02e9" => data<=x"238a";
				when x"02ea" => data<=x"2390";
				when x"02eb" => data<=x"2396";
				when x"02ec" => data<=x"239d";
				when x"02ed" => data<=x"23a3";
				when x"02ee" => data<=x"23a9";
				when x"02ef" => data<=x"23af";
				when x"02f0" => data<=x"23b6";
				when x"02f1" => data<=x"23bc";
				when x"02f2" => data<=x"23c2";
				when x"02f3" => data<=x"23c8";
				when x"02f4" => data<=x"23ce";
				when x"02f5" => data<=x"23d4";
				when x"02f6" => data<=x"23db";
				when x"02f7" => data<=x"23e1";
				when x"02f8" => data<=x"23e7";
				when x"02f9" => data<=x"23ed";
				when x"02fa" => data<=x"23f3";
				when x"02fb" => data<=x"23f9";
				when x"02fc" => data<=x"23ff";
				when x"02fd" => data<=x"2405";
				when x"02fe" => data<=x"240b";
				when x"02ff" => data<=x"2410";
				when x"0300" => data<=x"2416";
				when x"0301" => data<=x"241c";
				when x"0302" => data<=x"2422";
				when x"0303" => data<=x"2428";
				when x"0304" => data<=x"242e";
				when x"0305" => data<=x"2433";
				when x"0306" => data<=x"2439";
				when x"0307" => data<=x"243f";
				when x"0308" => data<=x"2445";
				when x"0309" => data<=x"244a";
				when x"030a" => data<=x"2450";
				when x"030b" => data<=x"2456";
				when x"030c" => data<=x"245b";
				when x"030d" => data<=x"2461";
				when x"030e" => data<=x"2466";
				when x"030f" => data<=x"246c";
				when x"0310" => data<=x"2471";
				when x"0311" => data<=x"2477";
				when x"0312" => data<=x"247c";
				when x"0313" => data<=x"2482";
				when x"0314" => data<=x"2487";
				when x"0315" => data<=x"248d";
				when x"0316" => data<=x"2492";
				when x"0317" => data<=x"2498";
				when x"0318" => data<=x"249d";
				when x"0319" => data<=x"24a2";
				when x"031a" => data<=x"24a8";
				when x"031b" => data<=x"24ad";
				when x"031c" => data<=x"24b2";
				when x"031d" => data<=x"24b7";
				when x"031e" => data<=x"24bd";
				when x"031f" => data<=x"24c2";
				when x"0320" => data<=x"24c7";
				when x"0321" => data<=x"24cc";
				when x"0322" => data<=x"24d1";
				when x"0323" => data<=x"24d6";
				when x"0324" => data<=x"24db";
				when x"0325" => data<=x"24e1";
				when x"0326" => data<=x"24e6";
				when x"0327" => data<=x"24eb";
				when x"0328" => data<=x"24f0";
				when x"0329" => data<=x"24f5";
				when x"032a" => data<=x"24fa";
				when x"032b" => data<=x"24fe";
				when x"032c" => data<=x"2503";
				when x"032d" => data<=x"2508";
				when x"032e" => data<=x"250d";
				when x"032f" => data<=x"2512";
				when x"0330" => data<=x"2517";
				when x"0331" => data<=x"251c";
				when x"0332" => data<=x"2520";
				when x"0333" => data<=x"2525";
				when x"0334" => data<=x"252a";
				when x"0335" => data<=x"252f";
				when x"0336" => data<=x"2533";
				when x"0337" => data<=x"2538";
				when x"0338" => data<=x"253d";
				when x"0339" => data<=x"2541";
				when x"033a" => data<=x"2546";
				when x"033b" => data<=x"254a";
				when x"033c" => data<=x"254f";
				when x"033d" => data<=x"2553";
				when x"033e" => data<=x"2558";
				when x"033f" => data<=x"255c";
				when x"0340" => data<=x"2561";
				when x"0341" => data<=x"2565";
				when x"0342" => data<=x"256a";
				when x"0343" => data<=x"256e";
				when x"0344" => data<=x"2573";
				when x"0345" => data<=x"2577";
				when x"0346" => data<=x"257b";
				when x"0347" => data<=x"2580";
				when x"0348" => data<=x"2584";
				when x"0349" => data<=x"2588";
				when x"034a" => data<=x"258c";
				when x"034b" => data<=x"2591";
				when x"034c" => data<=x"2595";
				when x"034d" => data<=x"2599";
				when x"034e" => data<=x"259d";
				when x"034f" => data<=x"25a1";
				when x"0350" => data<=x"25a5";
				when x"0351" => data<=x"25a9";
				when x"0352" => data<=x"25ad";
				when x"0353" => data<=x"25b1";
				when x"0354" => data<=x"25b5";
				when x"0355" => data<=x"25b9";
				when x"0356" => data<=x"25bd";
				when x"0357" => data<=x"25c1";
				when x"0358" => data<=x"25c5";
				when x"0359" => data<=x"25c9";
				when x"035a" => data<=x"25cd";
				when x"035b" => data<=x"25d1";
				when x"035c" => data<=x"25d5";
				when x"035d" => data<=x"25d9";
				when x"035e" => data<=x"25dc";
				when x"035f" => data<=x"25e0";
				when x"0360" => data<=x"25e4";
				when x"0361" => data<=x"25e8";
				when x"0362" => data<=x"25eb";
				when x"0363" => data<=x"25ef";
				when x"0364" => data<=x"25f3";
				when x"0365" => data<=x"25f6";
				when x"0366" => data<=x"25fa";
				when x"0367" => data<=x"25fd";
				when x"0368" => data<=x"2601";
				when x"0369" => data<=x"2604";
				when x"036a" => data<=x"2608";
				when x"036b" => data<=x"260b";
				when x"036c" => data<=x"260f";
				when x"036d" => data<=x"2612";
				when x"036e" => data<=x"2616";
				when x"036f" => data<=x"2619";
				when x"0370" => data<=x"261d";
				when x"0371" => data<=x"2620";
				when x"0372" => data<=x"2623";
				when x"0373" => data<=x"2627";
				when x"0374" => data<=x"262a";
				when x"0375" => data<=x"262d";
				when x"0376" => data<=x"2630";
				when x"0377" => data<=x"2633";
				when x"0378" => data<=x"2637";
				when x"0379" => data<=x"263a";
				when x"037a" => data<=x"263d";
				when x"037b" => data<=x"2640";
				when x"037c" => data<=x"2643";
				when x"037d" => data<=x"2646";
				when x"037e" => data<=x"2649";
				when x"037f" => data<=x"264c";
				when x"0380" => data<=x"264f";
				when x"0381" => data<=x"2652";
				when x"0382" => data<=x"2655";
				when x"0383" => data<=x"2658";
				when x"0384" => data<=x"265b";
				when x"0385" => data<=x"265e";
				when x"0386" => data<=x"2661";
				when x"0387" => data<=x"2664";
				when x"0388" => data<=x"2667";
				when x"0389" => data<=x"2669";
				when x"038a" => data<=x"266c";
				when x"038b" => data<=x"266f";
				when x"038c" => data<=x"2672";
				when x"038d" => data<=x"2674";
				when x"038e" => data<=x"2677";
				when x"038f" => data<=x"267a";
				when x"0390" => data<=x"267c";
				when x"0391" => data<=x"267f";
				when x"0392" => data<=x"2681";
				when x"0393" => data<=x"2684";
				when x"0394" => data<=x"2687";
				when x"0395" => data<=x"2689";
				when x"0396" => data<=x"268c";
				when x"0397" => data<=x"268e";
				when x"0398" => data<=x"2691";
				when x"0399" => data<=x"2693";
				when x"039a" => data<=x"2695";
				when x"039b" => data<=x"2698";
				when x"039c" => data<=x"269a";
				when x"039d" => data<=x"269c";
				when x"039e" => data<=x"269f";
				when x"039f" => data<=x"26a1";
				when x"03a0" => data<=x"26a3";
				when x"03a1" => data<=x"26a6";
				when x"03a2" => data<=x"26a8";
				when x"03a3" => data<=x"26aa";
				when x"03a4" => data<=x"26ac";
				when x"03a5" => data<=x"26ae";
				when x"03a6" => data<=x"26b0";
				when x"03a7" => data<=x"26b2";
				when x"03a8" => data<=x"26b5";
				when x"03a9" => data<=x"26b7";
				when x"03aa" => data<=x"26b9";
				when x"03ab" => data<=x"26bb";
				when x"03ac" => data<=x"26bd";
				when x"03ad" => data<=x"26bf";
				when x"03ae" => data<=x"26c0";
				when x"03af" => data<=x"26c2";
				when x"03b0" => data<=x"26c4";
				when x"03b1" => data<=x"26c6";
				when x"03b2" => data<=x"26c8";
				when x"03b3" => data<=x"26ca";
				when x"03b4" => data<=x"26cc";
				when x"03b5" => data<=x"26cd";
				when x"03b6" => data<=x"26cf";
				when x"03b7" => data<=x"26d1";
				when x"03b8" => data<=x"26d3";
				when x"03b9" => data<=x"26d4";
				when x"03ba" => data<=x"26d6";
				when x"03bb" => data<=x"26d8";
				when x"03bc" => data<=x"26d9";
				when x"03bd" => data<=x"26db";
				when x"03be" => data<=x"26dc";
				when x"03bf" => data<=x"26de";
				when x"03c0" => data<=x"26df";
				when x"03c1" => data<=x"26e1";
				when x"03c2" => data<=x"26e2";
				when x"03c3" => data<=x"26e4";
				when x"03c4" => data<=x"26e5";
				when x"03c5" => data<=x"26e7";
				when x"03c6" => data<=x"26e8";
				when x"03c7" => data<=x"26e9";
				when x"03c8" => data<=x"26eb";
				when x"03c9" => data<=x"26ec";
				when x"03ca" => data<=x"26ed";
				when x"03cb" => data<=x"26ee";
				when x"03cc" => data<=x"26f0";
				when x"03cd" => data<=x"26f1";
				when x"03ce" => data<=x"26f2";
				when x"03cf" => data<=x"26f3";
				when x"03d0" => data<=x"26f4";
				when x"03d1" => data<=x"26f6";
				when x"03d2" => data<=x"26f7";
				when x"03d3" => data<=x"26f8";
				when x"03d4" => data<=x"26f9";
				when x"03d5" => data<=x"26fa";
				when x"03d6" => data<=x"26fb";
				when x"03d7" => data<=x"26fc";
				when x"03d8" => data<=x"26fd";
				when x"03d9" => data<=x"26fe";
				when x"03da" => data<=x"26ff";
				when x"03db" => data<=x"26ff";
				when x"03dc" => data<=x"2700";
				when x"03dd" => data<=x"2701";
				when x"03de" => data<=x"2702";
				when x"03df" => data<=x"2703";
				when x"03e0" => data<=x"2703";
				when x"03e1" => data<=x"2704";
				when x"03e2" => data<=x"2705";
				when x"03e3" => data<=x"2706";
				when x"03e4" => data<=x"2706";
				when x"03e5" => data<=x"2707";
				when x"03e6" => data<=x"2708";
				when x"03e7" => data<=x"2708";
				when x"03e8" => data<=x"2709";
				when x"03e9" => data<=x"2709";
				when x"03ea" => data<=x"270a";
				when x"03eb" => data<=x"270a";
				when x"03ec" => data<=x"270b";
				when x"03ed" => data<=x"270b";
				when x"03ee" => data<=x"270c";
				when x"03ef" => data<=x"270c";
				when x"03f0" => data<=x"270c";
				when x"03f1" => data<=x"270d";
				when x"03f2" => data<=x"270d";
				when x"03f3" => data<=x"270e";
				when x"03f4" => data<=x"270e";
				when x"03f5" => data<=x"270e";
				when x"03f6" => data<=x"270e";
				when x"03f7" => data<=x"270f";
				when x"03f8" => data<=x"270f";
				when x"03f9" => data<=x"270f";
				when x"03fa" => data<=x"270f";
				when x"03fb" => data<=x"270f";
				when x"03fc" => data<=x"270f";
				when x"03fd" => data<=x"270f";
				when x"03fe" => data<=x"270f";
				when x"03ff" => data<=x"270f";
				when others => null;
			end case;
		end if;
	end process;


end Behavioral;