Xilinx CPLD Libraries Guide

More documents

Recommendations

Info

CD4CE Macro: 4-Bit Cascadable BCD Counter with Clock Enable and Asynchronous Clear Supported Architectures This design element is supported in the following architectures only: • XC9500XL • CoolRunner XPLA3 • CoolRunner-II Introduction About Design Elements CD4CE is a 4-bit (stage), asynchronous clearable, cascadable binary-coded-decimal (BCD) counter. The asynchronous clear input (CLR) is the highest priority input. When CLR is High, all other inputs are ignored; the Q outputs, terminal count (TC), and clock enable out (CEO) go to logic level zero, independent of clock transitions. The Q outputs increment when clock enable (CE) is High during the Low-to-High clock (C) transition. The counter ignores clock transitions when CE is Low. The TC output is High when Q3 and Q0 are High and Q2 and Q1 are Low. The counter recovers from any of six possible illegal states and returns to a normal count sequence within two clock cycles for Xilinx® devices, as shown in the following state diagram: Create larger counters by connecting the CEO output of each stage to the CE input of the next stage and connecting the C and CLR inputs in parallel. CEO is active (High) when TC and CE are High. The maximum length of the counter is determined by the accumulated CE-to-TC propagation delays versus the clock period. The clock period must be greater than n (tCE-TC), where n is the number of stages and the time tCE-TC is the CE-to-TC propagation delay of each stage. When cascading counters, use the CEO output if the counter uses the CE input or use the TC output if it does not. This counter is asynchronously cleared, outputs Low, when power is applied. For CPLD devices, you can simulate power-on by applying a High-level pulse on the PRLD global net. CPLD Libraries Guide 196 www.xilinx.com ISE 10.1
About Design Elements Logic Table Inputs Outputs CLR CE C Q3 Q2 Q1 Q0 TC CEO 1 X X 0 0 0 0 0 0 0 1 › Inc Inc Inc Inc TC CEO 0 0 X No Change No Change No Change No Change TC 0 0 1 X 1 0 0 1 1 1 TC = Q3•!Q2•!Q1•Q0 CEO = TC•CE Design Entry Method This design element is only for use in schematics. For More Information • See the appropriate CPLD User Guide. • See the appropriate CPLD Data Sheets. CPLD Libraries Guide ISE 10.1 www.xilinx.com 197
Page 1 and 2:
ISE 10.1 CPLD Libraries Guide
Page 3 and 4:
Table of Contents About this Guide.
Page 5 and 6:
CDD4CLE ...........................
Page 7 and 8:
FTC................................
Page 9 and 10:
OR5B1..............................
Page 11:
About this Guide This guide is part
Page 14 and 15:
Design Element Description BUFE4 Ma
Page 16 and 17:
Design Element Description Function
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
Design Element Description OBUFT Pr
Page 24 and 25:
Design Element Description NOR3B2 P
Page 26 and 27:
Page 29 and 30:
About Design Elements This section
Page 31 and 32:
About Design Elements For More Info
Page 33 and 34:
About Design Elements B0 for ACC16)
Page 35 and 36:
About Design Elements • For twos-
Page 37 and 38:
About Design Elements B0 for ACC8)
Page 39 and 40:
About Design Elements ADD16 Macro:
Page 41 and 42:
About Design Elements ADD4 Macro: 4
Page 43 and 44:
About Design Elements ADD8 Macro: 8
Page 45 and 46:
About Design Elements ADSU1 Macro:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
About Design Elements AND2 Primitiv
Page 55 and 56:
About Design Elements AND2B2 Primit
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
About Design Elements AND5 Primitiv
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
About Design Elements AND6 Macro: 6
Page 73 and 74:
About Design Elements AND8 Macro: 8
Page 75 and 76:
About Design Elements BRLSHFT4 Macr
Page 77 and 78:
Page 79 and 80:
About Design Elements BUF16 Macro:
Page 81 and 82:
About Design Elements BUF8 Macro: 8
Page 83 and 84:
About Design Elements BUFE16 Macro:
Page 85 and 86:
About Design Elements BUFE8 Macro:
Page 87 and 88:
About Design Elements BUFG BUFG_ins
Page 89 and 90:
About Design Elements BUFGTS Primit
Page 91 and 92:
About Design Elements BUFT16 Macro:
Page 93 and 94:
About Design Elements BUFT8 Macro:
Page 95 and 96:
Page 97 and 98:
About Design Elements Design Entry
Page 99 and 100:
About Design Elements Inputs Output
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
About Design Elements Logic Table I
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
About Design Elements The counter i
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
About Design Elements When cascadin
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156: About Design Elements Inputs Output
Page 157 and 158: About Design Elements For More Info
Page 161 and 162: About Design Elements Logic Table I
Page 171 and 172: About Design Elements Design Entry
Page 189 and 190: About Design Elements This counter
Page 205: About Design Elements Logic Table I
Page 221 and 222: About Design Elements CJ4CE Macro:
Page 227 and 228: About Design Elements CJD4CE Macro:
Page 233 and 234: About Design Elements CLK_DIV10 Pri
Page 235 and 236: About Design Elements CLK_DIV10R Pr
Page 237 and 238: About Design Elements CLK_DIV10RSD
Page 239 and 240: About Design Elements CLK_DIV10SD P
Page 257 and 258:
About Design Elements CLK_DIV16 Pri
Page 259 and 260:
About Design Elements CLK_DIV16R Pr
Page 261 and 262:
About Design Elements CLK_DIV16RSD
Page 263 and 264:
About Design Elements CLK_DIV16SD P
Page 265 and 266:
About Design Elements CLK_DIV2 Prim
Page 267 and 268:
About Design Elements CLK_DIV2R Pri
Page 269 and 270:
About Design Elements CLK_DIV2RSD P
Page 271 and 272:
About Design Elements CLK_DIV2SD Pr
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
About Design Elements COMP16 Macro:
Page 299 and 300:
About Design Elements COMP4 Macro:
Page 301 and 302:
About Design Elements COMPM16 Macro
Page 303 and 304:
About Design Elements COMPM4 Macro:
Page 305 and 306:
Page 307 and 308:
About Design Elements CR8CE Macro:
Page 309 and 310:
About Design Elements CRD8CE Macro:
Page 311 and 312:
About Design Elements D3_8E Macro:
Page 313 and 314:
About Design Elements FD Macro: D F
Page 315 and 316:
About Design Elements FD16CE Macro:
Page 317 and 318:
About Design Elements FD4 Macro: Mu
Page 319 and 320:
About Design Elements • See the a
Page 321 and 322:
Page 323 and 324:
About Design Elements FD8CE Macro:
Page 325 and 326:
About Design Elements FDC Macro: D
Page 327 and 328:
About Design Elements VHDL Instanti
Page 329 and 330:
Page 331 and 332:
About Design Elements Port Descript
Page 333 and 334:
About Design Elements FDD Macro: Du
Page 335 and 336:
About Design Elements FDD16CE Macro
Page 337 and 338:
About Design Elements FDD4 Macro: M
Page 339 and 340:
About Design Elements FDD4RE Macro:
Page 341 and 342:
About Design Elements FDD8CE Macro:
Page 343 and 344:
About Design Elements FDDC Macro: D
Page 345 and 346:
Page 347 and 348:
About Design Elements FDDCPE Macro:
Page 349 and 350:
About Design Elements FDDPE Primiti
Page 351 and 352:
About Design Elements FDDR Macro: D
Page 353 and 354:
About Design Elements FDDRS Macro:
Page 355 and 356:
About Design Elements FDDRSE Macro:
Page 357 and 358:
About Design Elements FDDS Macro: D
Page 359 and 360:
About Design Elements FDDSR Macro:
Page 361 and 362:
About Design Elements FDDSRE Macro:
Page 363 and 364:
About Design Elements FDP Macro: D
Page 365 and 366:
About Design Elements FDPE Primitiv
Page 367 and 368:
About Design Elements FDR Macro: D
Page 369 and 370:
About Design Elements FDRS Macro: D
Page 371 and 372:
About Design Elements FDRSE Macro:
Page 373 and 374:
About Design Elements FDS Macro: D
Page 375 and 376:
Page 377 and 378:
About Design Elements FDSRE Macro:
Page 379 and 380:
About Design Elements FJKCE Macro:
Page 381 and 382:
Page 383 and 384:
Page 385 and 386:
About Design Elements FJKPE Macro:
Page 387 and 388:
About Design Elements FJKRSE Macro:
Page 389 and 390:
About Design Elements FJKSRE Macro:
Page 391 and 392:
About Design Elements FTC Primitive
Page 393 and 394:
About Design Elements FTCLE Macro:
Page 395 and 396:
About Design Elements FTCP Primitiv
Page 397 and 398:
About Design Elements FTCPLE Macro:
Page 399 and 400:
About Design Elements FTDCE Macro:
Page 401 and 402:
Page 403 and 404:
Page 405 and 406:
About Design Elements FTDRSE Macro:
Page 407 and 408:
Page 409 and 410:
About Design Elements FTPE Macro: T
Page 411 and 412:
Page 413 and 414:
About Design Elements FTRSLE Macro:
Page 415 and 416:
About Design Elements FTSRE Macro:
Page 417 and 418:
Page 419 and 420:
About Design Elements IBUF Primitiv
Page 421 and 422:
Page 423 and 424:
About Design Elements Note Consult
Page 425 and 426:
About Design Elements Attribute Typ
Page 427 and 428:
About Design Elements Note Consult
Page 429 and 430:
About Design Elements INV16 Macro:
Page 431 and 432:
About Design Elements INV8 Macro: E
Page 433 and 434:
About Design Elements Verilog Insta
Page 435 and 436:
About Design Elements -- End of KEE
Page 437 and 438:
About Design Elements LD16 Macro: M
Page 439 and 440:
Page 441 and 442:
About Design Elements LDC Macro: Tr
Page 443 and 444:
About Design Elements LDCP Primitiv
Page 445 and 446:
About Design Elements LDG Primitive
Page 447 and 448:
About Design Elements LDG4 Macro: 4
Page 449 and 450:
About Design Elements LDP Macro: Tr
Page 451 and 452:
About Design Elements M16_1E Macro:
Page 453 and 454:
About Design Elements M2_1 Macro: 2
Page 455 and 456:
About Design Elements M2_1B2 Macro:
Page 457 and 458:
About Design Elements M4_1E Macro:
Page 459 and 460:
Page 461 and 462:
About Design Elements NAND2B1 Primi
Page 463 and 464:
About Design Elements NAND3 Primiti
Page 465 and 466:
Page 467 and 468:
About Design Elements NAND4 Primiti
Page 469 and 470:
Page 471 and 472:
Page 473 and 474:
Page 475 and 476:
Page 477 and 478:
Page 479 and 480:
About Design Elements NAND7 Macro:
Page 481 and 482:
About Design Elements NAND9 Macro:
Page 483 and 484:
About Design Elements NOR2B1 Primit
Page 485 and 486:
About Design Elements NOR3 Primitiv
Page 487 and 488:
Page 489 and 490:
About Design Elements NOR4 Primitiv
Page 491 and 492:
Page 493 and 494:
Page 495 and 496:
Page 497 and 498:
Page 499 and 500:
Page 501 and 502:
About Design Elements NOR7 Macro: 7
Page 503 and 504:
About Design Elements NOR9 Macro: 9
Page 505 and 506:
Page 507 and 508:
Page 509 and 510:
Page 511 and 512:
Page 513 and 514:
About Design Elements OBUFE16 Macro
Page 515 and 516:
About Design Elements OBUFE8 Macro:
Page 517 and 518:
About Design Elements Available Att
Page 519 and 520:
Page 521 and 522:
Page 523 and 524:
Page 525 and 526:
About Design Elements OR2B1 Primiti
Page 527 and 528:
About Design Elements OR3 Primitive
Page 529 and 530:
Page 531 and 532:
About Design Elements OR4 Primitive
Page 533 and 534:
Page 535 and 536:
Page 537 and 538:
Page 539 and 540:
Page 541 and 542:
Page 543 and 544:
About Design Elements OR7 Macro: 7-
Page 545 and 546:
About Design Elements OR9 Macro: 9-
Page 547 and 548:
About Design Elements ); -- End of
Page 549 and 550:
About Design Elements -- End of PUL
Page 551 and 552:
Page 553 and 554:
Page 555 and 556:
Page 557 and 558:
Page 559 and 560:
Page 561 and 562:
Page 563 and 564:
Page 565 and 566:
Page 567 and 568:
Page 569 and 570:
Page 571 and 572:
Page 573 and 574:
Page 575 and 576:
Page 577 and 578:
Page 579 and 580:
Page 581 and 582:
Page 583 and 584:
Page 585 and 586:
Page 587 and 588:
Page 589 and 590:
Page 591 and 592:
Page 593 and 594:
Page 595 and 596:
Page 597 and 598:
Page 599 and 600:
Page 601 and 602:
Page 603 and 604:
Page 605 and 606:
Page 607 and 608:
Page 609 and 610:
Page 611 and 612:
Page 613 and 614:
Page 615 and 616:
Page 617 and 618:
Page 619 and 620:
Page 621 and 622:
Page 623 and 624:
About Design Elements XNOR2 Primiti
Page 625 and 626:
About Design Elements XNOR4 Primiti
Page 627 and 628:
About Design Elements XNOR6 Macro:
Page 629 and 630:
About Design Elements XNOR8 Macro:
Page 631 and 632:
About Design Elements XOR2 Primitiv
Page 633 and 634:
About Design Elements XOR4 Primitiv
Page 635 and 636:
About Design Elements XOR6 Macro: 6
Page 637 and 638:
About Design Elements XOR8 Macro: 8
show all

Xilinx CPLD Libraries Guide

Create successful ePaper yourself

Delete template?

Save as template?