实验五 DDS信号发生器设计.doc

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1、实验五 DDS信号发生器的设计(1) 实验目的：学习利用EDA技术和FPGA实现直接数字频率综合器DDS的设计。(2) 实验原理：直接数字频率综合技术，即DDS技术，是一种新型的频率合成技术和信号产生方法。其电路系统具有较高的频率分辨率，可以实现快速的频率切换，并且在改变时能够保持相位的连续，很容易实现频率、相位和幅度的数控调制。 fSIN = M（fclk/2n）DDS基本结构相位累加器位宽和采样点关系 【例11-12】LIBRARY ieee; -波形数据ROMUSE ieee.std_logic_1164.all;LIBRARY altera_mf;USE altera_mf.alter

2、a_mf_components.all;ENTITY data_rom ISPORT(address: IN STD_LOGIC_VECTOR (9 DOWNTO 0);inclock: IN STD_LOGIC ;q: OUT STD_LOGIC_VECTOR (7 DOWNTO 0);END data_rom; . . .init_file = ./data/ rom_data.mif , -波形数据初始化文件路径lpm_hint = ENABLE_RUNTIME_MOD=YES, INSTANCE_NAME=rom2,. . .END; 【例11-13】LIBRARY IEEE; -32

3、位加法器模块USE IEEE.STD_LOGIC_1164.ALL;USE IEEE.STD_LOGIC_UNSIGNED.ALL;ENTITY ADDER32B IS PORT ( A : IN STD_LOGIC_VECTOR(31 DOWNTO 0); B : IN STD_LOGIC_VECTOR(31 DOWNTO 0); S : OUT STD_LOGIC_VECTOR(31 DOWNTO 0) );END ADDER32B;ARCHITECTURE behav OF ADDER32B IS BEGINS = A + B;END behav; 【例11-14】-32位寄存器模块LI

4、BRARY IEEE;USE IEEE.STD_LOGIC_1164.ALL;ENTITY REG32B IS PORT ( Load : IN STD_LOGIC; DIN : IN STD_LOGIC_VECTOR(31 DOWNTO 0); DOUT : OUT STD_LOGIC_VECTOR(31 DOWNTO 0) );END REG32B;ARCHITECTURE behav OF REG32B ISBEGIN PROCESS(Load, DIN) BEGIN IF LoadEVENT AND Load = 1 THEN - 时钟到来时，锁存输入数据 DOUT = DIN; EN

5、D IF; END PROCESS;END behav; 【例11-15】rom_data.mif 10位正弦波数据文件，读者可用MATLAB/DSP Builder生成WIDTH=10;DEPTH=1024;ADDRESS_RADIX=DEC; DATA_RADIX=DEC;CONTENT BEGIN 0 : 513; 1 : 515; 2 : 518; 3 : 521; 4 : 524; 5 : 527; 6 : 530; 7 : 533; 8 : 537; 9 : 540; 10 : 543; 11 : 546; 13 : 549; 13 : 552; 14 : 555; . . . .

6、 . .（略去部分数据） 1018 : 493; 1019 : 496; 1020 : 499; 1021 : 502; 1022 : 505; 1023 : 508;END; (3) 实验内容1：详细述叙DDS的工作原理，依据例11-12至例11-15完成仿真，并由仿真结果进一步说明DDS的原理。完成编译和下载。选择模式1；键2、键1输入8位频率字FWORD；利用GW48系统ADDA板输出波形，用示波器观察输出波形。(4) 实验内容2：根据图11-36，在原设计（图11-38）中加入相位控制电路，用键4、键3输入8位相位字PWORD；重复实验1的内容。(5) 实验内容3：将图11-38的顶层

7、原理图表述为VHDL，重复实验1的内容。（6）实验报告：根据以上的实验内容写出实验报告，包括程序框图说明、各模块工作原理、软件编译过程中遇到的问题、硬件测试和实验过程。 完整的1024各8位的正弦波数据如下：- Quartus II generated Memory Initialization File (.mif)WIDTH=8;DEPTH=1024;ADDRESS_RADIX=HEX;DATA_RADIX=HEX;CONTENT BEGIN000:00; 001:03; 002:06; 003:09; 004:0C; 005:0F; 006:12; 007:15;008:19; 009:

8、1C; 00A:1F; 00B:22; 00C:25; 00D:28; 00E:2B; 00F:2F;010:32; 011:35; 012:38; 013:3B; 014:3E; 015:41; 016:44; 017:48;018:4B; 019:4E; 01A:51; 01B:54; 01C:57; 01D:5A; 01E:5D; 01F:60;020:63; 021:66; 022:6A;023:6D; 024:70; 025:73; 026:76; 027:79;028:7C; 029:7F; 02A:82; 02B:85; 02C:88; 02D:8B; 02E:8E; 02F:9

9、1;030:94; 031:97; 032:9A; 033:9D; 034:A0; 035:A3; 036:A6; 037:A9;038:AC;039:AF; 03A:B2; 03B:B5; 03C:B8; 03D:BB; 03E:BE; 03F:C1;040:C3; 041:C6; 042:C9; 043:CC;044:CF; 045:D2; 046:D5; 047:D8;048:DA; 049:DD; 04A:E0; 04B:E3; 04C:E6; 04D:E9; 04E:EB;04F:EE;050:F1; 051:F4; 052:F6; 053:F9; 054:FC; 055:FF; 0

10、56:01; 057:04;058:07; 059:09; 05A:0C;05B:0F; 05C:11; 05D:14; 05E:17; 05F:19;060:1C; 061:1F; 062:21; 063:24; 064:26; 065:29; 066:2B;067:2E;068:30; 069:33; 06A:36; 06B:38; 06C:3A; 06D:3D; 06E:3F; 06F:42;070:44; 071:47; 072:49;073:4C; 074:4E; 075:50; 076:53; 077:55;078:57; 079:5A; 07A:5C; 07B:5E; 07C:6

11、1; 07D:63; 07E:65; 07F:67;080:6A; 081:6C; 082:6E; 083:70; 084:72; 085:74; 086:77; 087:79;088:7B; 089:7D;08A:7F; 08B:81; 08C:83; 08D:85; 08E:87; 08F:89;090:8B; 091:8D; 092:8F; 093:91; 094:93; 095:95;096:97; 097:99;098:9B; 099:9D; 09A:9E; 09B:A0; 09C:A2; 09D:A4; 09E:A6; 09F:A7;0A0:A9;0A1:AB; 0A2:AD; 0

12、A3:AE; 0A4:B0; 0A5:B2; 0A6:B3; 0A7:B5;0A8:B7; 0A9:B8; 0AA:BA;0AB:BB; 0AC:BD; 0AD:BF; 0AE:C0; 0AF:C2;0B0:C3; 0B1:C5; 0B2:C6; 0B3:C7; 0B4:C9;0B5:CA; 0B6:CC; 0B7:CD;0B8:CE; 0B9:D0; 0BA:D1; 0BB:D2; 0BC:D4; 0BD:D5; 0BE:D6;0BF:D7;0C0:D9; 0C1:DA; 0C2:DB; 0C3:DC; 0C4:DD; 0C5:DE; 0C6:DF; 0C7:E1;0C8:E2; 0C9:E

13、3;0CA:E4; 0CB:E5; 0CC:E6; 0CD:E7; 0CE:E8; 0CF.0D0:E9; 0D1:EA; 0D2:EB; 0D3:EC;0D4:ED; 0D5:EE; 0D6.0D7:EF; 0D8:F0; 0D9:F1; 0DA.0DB:F2; 0DC:F3;0DD.0DE:F4;0DF:F5; 0E0.0E1:F6; 0E2.0E3:F7;0E4.0E5:F8; 0E6.0E7:F9; 0E8.0E9:FA;0EA.0EB:FB;0EC.0EE:FC; 0EF.0F1:FD; 0F2.0F5:FE; 0F6.0FF:FF;100:00;101.10A:FF; 10B.10

14、E:FE; 10F.111:FD; 112.114:FC;115.116:FB; 117.118:FA;119.11A:F9; 11B.11C:F8;11D.11E:F7; 11F.120:F6; 121:F5; 122.123:F4;124:F3;125.126:F2; 127:F1; 128:F0;129.12A:EF; 12B:EE; 12C:ED; 12D:EC; 12E:EB; 12F:EA;130.131:E9; 132:E8; 133:E7; 134:E6; 135:E5; 136:E4;137:E3; 138:E2; 139:E1; 13A:DF;13B:DE; 13C:DD;

15、 13D:DC;13E:DB; 13F:DA; 140:D9; 141:D7; 142:D6; 143:D5; 144:D4;145:D2; 146:D1; 147:D0; 148:CE; 149:CD; 14A:CC; 14B:CA; 14C:C9;14D:C7; 14E:C6; 14F:C5; 150:C3;151:C2; 152:C0; 153:BF; 154:BD;155:BB; 156:BA; 157:B8; 158:B7; 159:B5; 15A:B3; 15B:B2;15C:B0;15D:AE; 15E:AD; 15F:AB; 160:A9; 161:A7; 162:A6; 16

16、3:A4; 164:A2;165:A0; 166:9E;167:9D; 168:9B; 169:99; 16A:97; 16B:95; 16C: 93;16D:91; 16E:8F; 16F:8D; 170:8B; 171:89;172:87; 173:85; 174:83;175:81; 176:7F; 177:7D; 178:7B; 179:79; 17A:77; 17B:74; 17C:72;17D:70; 17E:6E; 17F:6C; 180:6A; 181:67; 182:65; 183:63; 184:61;185:5E; 186:5C; 187:5A; 188:57;189:5

17、5; 18A:53; 18B:50; 18C:4E;18D:4C; 18E:49; 18F:47; 190:44; 191:42; 192:3F; 193:3D;194:3A;195:38; 196:36; 197:33; 198:30; 199:2E; 19A:2B; 19B:29; 19C:26;19D:24; 19E:21; 19F:1F;1A0:1C; 1A1:19; 1A2:17; 1A3:14; 1A4:11;1A5:0F; 1A6:0C; 1A7:09; 1A8:07; 1A9:04; 1AA:01;1AB:FF; 1AC:FC;1AD:F9; 1AE:F6; 1AF:F4; 1

18、B0:F1; 1B1:EE; 1B2:EB; 1B3:E9; 1B4:E6;1B5:E3;1B6:E0; 1B7:DD; 1B8:DA; 1B9:D8; 1BA:D5; 1BB:D2; 1BC:CF;1BD:CC; 1BE:C9; 1BF:C6;1C0:C3; 1C1:C1; 1C2:BE; 1C3:BB; 1C4:B8;1C5:B5; 1C6:B2; 1C7:AF; 1C8:AC; 1C9:A9; 1CA:A6; 1CB:A3; 1CC:A0;1CD:9D; 1CE:9A; 1CF:97; 1D0:94; 1D1:91; 1D2:8E; 1D3:8B; 1D4:88;1D5:85; 1D6:

19、82; 1D7:7F; 1D8:7C; 1D9:79; 1DA:76; 1DB:73; 1DC:70;1DD:6D; 1DE:6A; 1DF:66; 1E0:63; 1E1:60; 1E2:5D; 1E3:5A; 1E4:57;1E5:54; 1E6:51; 1E7:4E; 1E8:4B; 1E9:48; 1EA:44; 1EB:41; 1EC:3E;1ED:3B; 1EE:38; 1EF:35; 1F0:32; 1F1:2F; 1F2:2B; 1F3:28; 1F4:25;1F5:22; 1F6:1F; 1F7:1C; 1F8:19; 1F9:15; 1FA:12; 1FB:0F; 1FC:

20、0C;1FD:09; 1FE:06; 1FF:03; 200:00; 201:FC; 202:F9; 203:F6; 204:F3;205:F0; 206:ED; 207:EA; 208:E6; 209:E3; 20A:E0; 20B:DD; 20C:DA;20D:D7; 20E:D4; 20F:D0; 210:CD; 211:CA; 212:C7; 213:C4; 214:C1;215:BE; 216:BB; 217:B7; 218:B4; 219:B1; 21A:AE; 21B:AB; 21C:A8;21D:A5; 21E:A2; 21F:9F; 220:9C; 221:99; 222:9

21、5; 223:92; 224:8F;225:8C; 226:89; 227:86; 228:83; 229:80; 22A:7D; 22B:7A; 22C:77;22D:74; 22E:71; 22F:6E; 230:6B; 231:68; 232:65; 233:62; 234:5F;235:5C; 236:59; 237:56; 238:53; 239:50; 23A:4D; 23B:4A; 23C:47;23D:44; 23E:41; 23F:3E; 240:3C; 241:39; 242:36; 243:33; 244:30;245:2D; 246:2A; 247:27; 248:25

22、; 249:22; 24A:1F; 24B:1C; 24C:19;24D:16; 24E:14; 24F:11; 250:0E; 251:0B; 252:09; 253:06; 254:03;255:00; 256:FE; 257:FB; 258:F8; 259:F6; 25A:F3; 25B:F0; 25C:EE;25D:EB; 25E:E8; 25F:E6; 260:E3; 261:E0; 262:DE; 263:DB; 264:D9;265:D6; 266:D4; 267:D1; 268:CF; 269:CC; 26A:C9; 26B:C7; 26C:C5;26D:C2; 26E:C0;

23、 26F:BD; 270:BB; 271:B8; 272:B6; 273:B3; 274:B1;275:AF; 276:AC; 277:AA; 278:A8; 279:A5; 27A:A3; 27B:A1; 27C:9E;27D:9C; 27E:9A; 27F:98; 280:95; 281:93; 282:91; 283:8F; 284:8D;285:8B; 286:88; 287:86; 288:84; 289:82; 28A:80; 28B:7E; 28C:7C;28D:7A; 28E:78; 28F:76; 290:74; 291:72; 292:70; 293:6E; 294:6C;

24、295:6A; 296:68; 297:66; 298:64; 299:62; 29A:61; 29B:5F; 29C:5D;29D:5B; 29E:59; 29F:58; 2A0:56; 2A1:54; 2A2:52; 2A3:51; 2A4:4F;2A5:4D; 2A6:4C; 2A7:4A; 2A8:48; 2A9:47; 2AA:45; 2AB:44; 2AC:42;2AD:40; 2AE:3F; 2AF:3D; 2B0:3C; 2B1:3A; 2B2:39; 2B3:38; 2B4:36;2B5:35; 2B6:33; 2B7:32; 2B8:31; 2B9:2F; 2BA:2E;

25、2BB:2D; 2BC:2B;2BD:2A; 2BE:29; 2BF:28; 2C0:26; 2C1:25; 2C2:24; 2C3:23; 2C4:22;2C5:21; 2C6:20; 2C7:1E; 2C8:1D; 2C9:1C; 2CA:1B; 2CB:1A; 2CC:19;2CD:18; 2CE:17; 2CF.2D0:16; 2D1:15; 2D2:14; 2D3:13; 2D4:12;2D5:11; 2D6.2D7:10; 2D8:0F; 2D9:0E; 2DA.2DB:0D; 2DC:0C;2DD.2DE:0B; 2DF:0A; 2E0.2E1:09; 2E2.2E3:08;2E

26、4.2E5:07; 2E6.2E7:06; 2E8.2E9:05; 2EA.2EB:04;2EC.2EE:03; 2EF.2F1:02; 2F2.2F5:01; 2F6.30A:00; 30B.30E:01; 30F.311:02; 312.314:03; 315.316:04;317.318:05; 319.31A:06; 31B.31C:07; 31D.31E:08;31F.320:09; 321:0A;322.323:0B; 324:0C; 325.326:0D;327:0E; 328:0F; 329.32A:10; 32B:11; 32C:12; 32D:13; 32E:14;32F:

27、15; 330.331:16; 332:17; 333:18; 334:19; 335:1A; 336:1B;337:1C; 338:1D; 339:1E; 33A:20; 33B:21; 33C:22; 33D:23; 33E:24;33F:25; 340:26; 341:28; 342:29; 343:2A; 344:2B; 345:2D; 346:2E;347:2F; 348:31; 349:32; 34A:33; 34B:35; 34C:36; 34D:38; 34E:39;34F:3A; 350:3C; 351:3D; 352:3F; 353:40; 354:42; 355:44;

28、356:45;357:47; 358:48; 359:4A; 35A:4C; 35B:4D; 35C:4F; 35D:51; 35E:52;35F:54; 360:56; 361:58; 362:59; 363:5B; 364:5D; 365:5F; 366:61;367:62; 368:64; 369:66; 36A:68; 36B:6A; 36C:6C; 36D:6E; 36E:70;36F:72; 370:74; 371:76; 372:78; 373:7A; 374:7C; 375:7E; 376:80;377:82; 378:84; 379:86; 37A:88; 37B:8B; 3

29、7C:8D; 37D:8F; 37E:91;37F:93; 380:95; 381:98; 382:9A; 383:9C; 384:9E; 385:A1; 386:A3;387:A5; 388:A8; 389:AA; 38A:AC; 38B:AF; 38C:B1; 38D:B3; 38E:B6;38F:B8; 390:BB; 391:BD; 392:C0; 393:C2; 394:C5; 395:C7; 396:C9;397:CC; 398:CF; 399:D1; 39A:D4; 39B:D6; 39C:D9; 39D:DB; 39E:DE;39F:E0; 3A0:E3; 3A1:E6; 3A

30、2:E8; 3A3:EB; 3A4:EE; 3A5:F0; 3A6:F3;3A7:F6; 3A8:F8; 3A9:FB; 3AA:FE; 3AB:00; 3AC:03; 3AD:06; 3AE:09;3AF:0B; 3B0:0E; 3B1:11; 3B2:14; 3B3:16; 3B4:19; 3B5:1C; 3B6:1F;3B7:22; 3B8:25; 3B9:27; 3BA:2A; 3BB:2D; 3BC:30; 3BD:33; 3BE:36;3BF:39; 3C0:3C; 3C1:3E; 3C2:41; 3C3:44; 3C4:47; 3C5:4A; 3C6:4D;3C7:50; 3C8

31、:53; 3C9:56; 3CA:59; 3CB:5C; 3CC:5F; 3CD:62; 3CE:65;3CF:68; 3D0:6B; 3D1:6E; 3D2:71; 3D3:74; 3D4:77; 3D5:7A; 3D6:7D;3D7:80; 3D8:83; 3D9:86; 3DA:89; 3DB:8C; 3DC:8F; 3DD:92; 3DE:95;3DF:99; 3E0:9C; 3E1:9F; 3E2:A2; 3E3:A5; 3E4:A8; 3E5:AB; 3E6:AE;3E7:B1; 3E8:B4; 3E9:B7; 3EA:BB; 3EB:BE; 3EC:C1; 3ED:C4; 3EE:C7;3EF:CA; 3F0:CD; 3F1:D0; 3F2:D4; 3F3:D7; 3F4:DA; 3F5:DD; 3F6:E0;3F7:E3; 3F8:E6; 3F9:EA; 3FA:ED; 3FB:F0; 3FC:F3; 3FD:F6; 3FE:F9; 3FF: FC; END;