frequency_vhd.sdo

这个程序是基于等精度测频原理的频率计

// Copyright (C) 1991-2005 Altera Corporation
// Your use of Altera Corporation's design tools, logic functions 
// and other software and tools, and its AMPP partner logic 
// functions, and any output files any of the foregoing 
// (including device programming or simulation files), and any 
// associated documentation or information are expressly subject 
// to the terms and conditions of the Altera Program License 
// Subscription Agreement, Altera MegaCore Function License 
// Agreement, or other applicable license agreement, including, 
// without limitation, that your use is for the sole purpose of 
// programming logic devices manufactured by Altera and sold by 
// Altera or its authorized distributors.  Please refer to the 
// applicable agreement for further details.


// 
// Device: Altera EP1S10F484C5 Package FBGA484
// 

// 
// This SDF file should be used for ModelSim (VHDL) only
// 

(DELAYFILE
  (SDFVERSION "2.1")
  (DESIGN "frequency")
  (DATE "08/03/2008 10:59:43")
  (VENDOR "Altera")
  (PROGRAM "Quartus II")
  (VERSION "Version 5.1 Build 176 10/26/2005 SJ Full Version")
  (DIVIDER .)
  (TIMESCALE 1 ps)

  (CELL
    (CELLTYPE "stratix_asynch_io")
    (INSTANCE \\tclk\~I\\.inst1)
    (DELAY
      (ABSOLUTE
        (IOPATH padio combout (828:828:828) (828:828:828))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_io")
    (INSTANCE \\clk\~I\\.inst1)
    (DELAY
      (ABSOLUTE
        (IOPATH padio combout (725:725:725) (725:725:725))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_io")
    (INSTANCE \\start\~I\\.inst1)
    (DELAY
      (ABSOLUTE
        (IOPATH padio combout (725:725:725) (725:725:725))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\start\~12_I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datac (4312:4312:4312) (4284:4284:4284))
        (IOPATH datac combout (183:183:183) (183:183:183))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\q\[0\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT dataa (412:412:412) (407:407:407))
        (PORT datac (1247:1247:1247) (1200:1200:1200))
        (IOPATH dataa regin (539:539:539) (539:539:539))
        (IOPATH dataa cout0 (443:443:443) (443:443:443))
        (IOPATH dataa cout1 (451:451:451) (451:451:451))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_lcell_register")
    (INSTANCE \\q\[0\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT sload (1808:1808:1808) (1812:1812:1812))
        (PORT datac (1332:1332:1332) (1285:1285:1285))
        (PORT aclr (645:645:645) (645:645:645))
        (PORT clk (2156:2156:2156) (2134:2134:2134))
        (IOPATH (posedge clk) regout (156:156:156) (156:156:156))
        (IOPATH (posedge aclr) regout (176:176:176) (176:176:176))
      )
    )
    (TIMINGCHECK
      (SETUP datac (posedge clk) (10:10:10))
      (SETUP datain (posedge clk) (10:10:10))
      (SETUP sload (posedge clk) (10:10:10))
      (HOLD datac (posedge clk) (100:100:100))
      (HOLD datain (posedge clk) (100:100:100))
      (HOLD sload (posedge clk) (100:100:100))
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\q\[1\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT dataa (415:415:415) (407:407:407))
        (PORT datac (1248:1248:1248) (1203:1203:1203))
        (IOPATH dataa regin (539:539:539) (539:539:539))
        (IOPATH cin0 regin (489:489:489) (489:489:489))
        (IOPATH cin1 regin (497:497:497) (497:497:497))
        (IOPATH dataa cout (524:524:524) (524:524:524))
        (IOPATH cin0 cout (130:130:130) (130:130:130))
        (IOPATH cin1 cout (118:118:118) (118:118:118))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_lcell_register")
    (INSTANCE \\q\[1\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT sload (1808:1808:1808) (1812:1812:1812))
        (PORT datac (1333:1333:1333) (1288:1288:1288))
        (PORT aclr (645:645:645) (645:645:645))
        (PORT clk (2156:2156:2156) (2134:2134:2134))
        (IOPATH (posedge clk) regout (156:156:156) (156:156:156))
        (IOPATH (posedge aclr) regout (176:176:176) (176:176:176))
      )
    )
    (TIMINGCHECK
      (SETUP datac (posedge clk) (10:10:10))
      (SETUP datain (posedge clk) (10:10:10))
      (SETUP sload (posedge clk) (10:10:10))
      (HOLD datac (posedge clk) (100:100:100))
      (HOLD datain (posedge clk) (100:100:100))
      (HOLD sload (posedge clk) (100:100:100))
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\q\[2\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (382:382:382) (381:381:381))
        (PORT datac (1254:1254:1254) (1209:1209:1209))
        (IOPATH datab regin (458:458:458) (458:458:458))
        (IOPATH cin regin (578:578:578) (578:578:578))
        (IOPATH datab cout0 (344:344:344) (344:344:344))
        (IOPATH datab cout1 (341:341:341) (341:341:341))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_lcell_register")
    (INSTANCE \\q\[2\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT sload (1808:1808:1808) (1812:1812:1812))
        (PORT datac (1339:1339:1339) (1294:1294:1294))
        (PORT aclr (645:645:645) (645:645:645))
        (PORT clk (2156:2156:2156) (2134:2134:2134))
        (IOPATH (posedge clk) regout (156:156:156) (156:156:156))
        (IOPATH (posedge aclr) regout (176:176:176) (176:176:176))
      )
    )
    (TIMINGCHECK
      (SETUP datac (posedge clk) (10:10:10))
      (SETUP datain (posedge clk) (10:10:10))
      (SETUP sload (posedge clk) (10:10:10))
      (HOLD datac (posedge clk) (100:100:100))
      (HOLD datain (posedge clk) (100:100:100))
      (HOLD sload (posedge clk) (100:100:100))
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\q\[3\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (394:394:394) (394:394:394))
        (PORT datac (1253:1253:1253) (1208:1208:1208))
        (IOPATH datab regin (458:458:458) (458:458:458))
        (IOPATH cin regin (578:578:578) (578:578:578))
        (IOPATH cin0 regin (489:489:489) (489:489:489))
        (IOPATH cin1 regin (497:497:497) (497:497:497))
        (IOPATH datab cout0 (344:344:344) (344:344:344))
        (IOPATH cin0 cout0 (58:58:58) (58:58:58))
        (IOPATH datab cout1 (341:341:341) (341:341:341))
        (IOPATH cin1 cout1 (60:60:60) (60:60:60))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_lcell_register")
    (INSTANCE \\q\[3\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT sload (1808:1808:1808) (1812:1812:1812))
        (PORT datac (1338:1338:1338) (1293:1293:1293))
        (PORT aclr (645:645:645) (645:645:645))
        (PORT clk (2156:2156:2156) (2134:2134:2134))
        (IOPATH (posedge clk) regout (156:156:156) (156:156:156))
        (IOPATH (posedge aclr) regout (176:176:176) (176:176:176))
      )
    )
    (TIMINGCHECK
      (SETUP datac (posedge clk) (10:10:10))
      (SETUP datain (posedge clk) (10:10:10))
      (SETUP sload (posedge clk) (10:10:10))
      (HOLD datac (posedge clk) (100:100:100))
      (HOLD datain (posedge clk) (100:100:100))
      (HOLD sload (posedge clk) (100:100:100))
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\q\[4\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT dataa (410:410:410) (405:405:405))
        (PORT datac (1637:1637:1637) (1415:1415:1415))
        (IOPATH dataa regin (539:539:539) (539:539:539))
        (IOPATH cin regin (578:578:578) (578:578:578))
        (IOPATH cin0 regin (489:489:489) (489:489:489))
        (IOPATH cin1 regin (497:497:497) (497:497:497))
        (IOPATH dataa cout0 (443:443:443) (443:443:443))
        (IOPATH cin0 cout0 (58:58:58) (58:58:58))
        (IOPATH dataa cout1 (451:451:451) (451:451:451))
        (IOPATH cin1 cout1 (60:60:60) (60:60:60))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_lcell_register")
    (INSTANCE \\q\[4\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT sload (1808:1808:1808) (1812:1812:1812))
        (PORT datac (1722:1722:1722) (1500:1500:1500))
        (PORT aclr (645:645:645) (645:645:645))
        (PORT clk (2156:2156:2156) (2134:2134:2134))
        (IOPATH (posedge clk) regout (156:156:156) (156:156:156))
        (IOPATH (posedge aclr) regout (176:176:176) (176:176:176))
      )
    )
    (TIMINGCHECK
      (SETUP datac (posedge clk) (10:10:10))
      (SETUP datain (posedge clk) (10:10:10))
      (SETUP sload (posedge clk) (10:10:10))
      (HOLD datac (posedge clk) (100:100:100))
      (HOLD datain (posedge clk) (100:100:100))
      (HOLD sload (posedge clk) (100:100:100))
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\q\[5\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT dataa (415:415:415) (407:407:407))
        (PORT datac (1633:1633:1633) (1413:1413:1413))
        (IOPATH dataa regin (539:539:539) (539:539:539))
        (IOPATH cin regin (578:578:578) (578:578:578))
        (IOPATH cin0 regin (489:489:489) (489:489:489))
        (IOPATH cin1 regin (497:497:497) (497:497:497))
        (IOPATH dataa cout0 (443:443:443) (443:443:443))
        (IOPATH cin0 cout0 (58:58:58) (58:58:58))
        (IOPATH dataa cout1 (451:451:451) (451:451:451))
        (IOPATH cin1 cout1 (60:60:60) (60:60:60))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_lcell_register")
    (INSTANCE \\q\[5\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT sload (1808:1808:1808) (1812:1812:1812))
        (PORT datac (1718:1718:1718) (1498:1498:1498))
        (PORT aclr (645:645:645) (645:645:645))
        (PORT clk (2156:2156:2156) (2134:2134:2134))
        (IOPATH (posedge clk) regout (156:156:156) (156:156:156))
        (IOPATH (posedge aclr) regout (176:176:176) (176:176:176))
      )
    )
    (TIMINGCHECK
      (SETUP datac (posedge clk) (10:10:10))
      (SETUP datain (posedge clk) (10:10:10))
      (SETUP sload (posedge clk) (10:10:10))
      (HOLD datac (posedge clk) (100:100:100))
      (HOLD datain (posedge clk) (100:100:100))
      (HOLD sload (posedge clk) (100:100:100))
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\q\[6\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (392:392:392) (394:394:394))
        (PORT datac (1633:1633:1633) (1413:1413:1413))
        (IOPATH datab regin (458:458:458) (458:458:458))
        (IOPATH cin regin (578:578:578) (578:578:578))
        (IOPATH cin0 regin (489:489:489) (489:489:489))
        (IOPATH cin1 regin (497:497:497) (497:497:497))
        (IOPATH datab cout (502:502:502) (502:502:502))
        (IOPATH cin cout (142:142:142) (142:142:142))
        (IOPATH cin0 cout (214:214:214) (214:214:214))
        (IOPATH cin1 cout (198:198:198) (198:198:198))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_lcell_register")
    (INSTANCE \\q\[6\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT sload (1808:1808:1808) (1812:1812:1812))
        (PORT datac (1718:1718:1718) (1498:1498:1498))
        (PORT aclr (645:645:645) (645:645:645))
        (PORT clk (2156:2156:2156) (2134:2134:2134))
        (IOPATH (posedge clk) regout (156:156:156) (156:156:156))
        (IOPATH (posedge aclr) regout (176:176:176) (176:176:176))
      )
    )
    (TIMINGCHECK
      (SETUP datac (posedge clk) (10:10:10))
      (SETUP datain (posedge clk) (10:10:10))
      (SETUP sload (posedge clk) (10:10:10))
      (HOLD datac (posedge clk) (100:100:100))
      (HOLD datain (posedge clk) (100:100:100))
      (HOLD sload (posedge clk) (100:100:100))
    )
  )
  (CELL
    (CELLTYPE "stratix_asynch_lcell")
    (INSTANCE \\q\[7\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (384:384:384) (386:386:386))
        (PORT datac (1602:1602:1602) (1389:1389:1389))
        (IOPATH datab regin (458:458:458) (458:458:458))
        (IOPATH cin regin (598:598:598) (598:598:598))
        (IOPATH datab cout0 (344:344:344) (344:344:344))
        (IOPATH datab cout1 (341:341:341) (341:341:341))
      )
    )
  )
  (CELL
    (CELLTYPE "stratix_lcell_register")
    (INSTANCE \\q\[7\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT sload (1187:1187:1187) (1213:1213:1213))
        (PORT datac (1687:1687:1687) (1474:1474:1474))
        (PORT aclr (645:645:645) (645:645:645))
        (PORT clk (2147:2147:2147) (2126:2126:2126))
        (IOPATH (posedge clk) regout (156:156:156) (156:156:156))
        (IOPATH (posedge aclr) regout (176:176:176) (176:176:176))
      )
    )
    (TIMINGCHECK
      (SETUP datac (posedge clk) (10:10:10))
      (SETUP datain (posedge clk) (10:10:10))
      (SETUP sload (posedge clk) (10:10:10))