clk_div5_vhd.sdo

对任意始终进行精确的5分频处理,而且没有毛刺,效果很好.

// 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 EP1C3T144C8 Package TQFP144
// 

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

(DELAYFILE
  (SDFVERSION "2.1")
  (DESIGN "clk_div5")
  (DATE "05/28/2007 16:37:44")
  (VENDOR "Altera")
  (PROGRAM "Quartus II")
  (VERSION "Version 5.1 Build 176 10/26/2005 SJ Full Version")
  (DIVIDER .)
  (TIMESCALE 1 ps)

  (CELL
    (CELLTYPE "cyclone_asynch_io")
    (INSTANCE \\clk\~I\\.asynch_inst)
    (DELAY
      (ABSOLUTE
        (IOPATH padio combout (1469:1469:1469) (1469:1469:1469))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\countr\[1\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (565:565:565) (564:564:564))
        (PORT datac (597:597:597) (605:605:605))
        (IOPATH datab regin (607:607:607) (607:607:607))
        (IOPATH datac regin (478:478:478) (478:478:478))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_lcell_register")
    (INSTANCE \\countr\[1\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT aclr (898:898:898) (898:898:898))
        (PORT clk (1261:1261:1261) (1241:1241:1241))
        (IOPATH (posedge clk) regout (224:224:224) (224:224:224))
        (IOPATH (posedge aclr) regout (283:283:283) (283:283:283))
      )
    )
    (TIMINGCHECK
      (SETUP datain (posedge clk) (37:37:37))
      (HOLD datain (posedge clk) (15:15:15))
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\countr\[2\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (568:568:568) (567:567:567))
        (PORT datac (591:591:591) (597:597:597))
        (PORT datad (564:564:564) (554:554:554))
        (IOPATH datab regin (607:607:607) (607:607:607))
        (IOPATH datac regin (478:478:478) (478:478:478))
        (IOPATH datad regin (309:309:309) (309:309:309))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_lcell_register")
    (INSTANCE \\countr\[2\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT aclr (898:898:898) (898:898:898))
        (PORT clk (1261:1261:1261) (1241:1241:1241))
        (IOPATH (posedge clk) regout (224:224:224) (224:224:224))
        (IOPATH (posedge aclr) regout (283:283:283) (283:283:283))
      )
    )
    (TIMINGCHECK
      (SETUP datain (posedge clk) (37:37:37))
      (HOLD datain (posedge clk) (15:15:15))
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\countr\[0\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (568:568:568) (566:566:566))
        (PORT datac (591:591:591) (599:599:599))
        (PORT datad (566:566:566) (556:556:556))
        (IOPATH datab regin (607:607:607) (607:607:607))
        (IOPATH datac regin (478:478:478) (478:478:478))
        (IOPATH datad regin (309:309:309) (309:309:309))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_lcell_register")
    (INSTANCE \\countr\[0\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT aclr (898:898:898) (898:898:898))
        (PORT clk (1261:1261:1261) (1241:1241:1241))
        (IOPATH (posedge clk) regout (224:224:224) (224:224:224))
        (IOPATH (posedge aclr) regout (283:283:283) (283:283:283))
      )
    )
    (TIMINGCHECK
      (SETUP datain (posedge clk) (37:37:37))
      (HOLD datain (posedge clk) (15:15:15))
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\levelr\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT dataa (600:600:600) (590:590:590))
        (PORT datab (565:565:565) (561:561:561))
        (PORT datac (574:574:574) (587:587:587))
        (PORT datad (571:571:571) (561:561:561))
        (IOPATH dataa regin (738:738:738) (738:738:738))
        (IOPATH datab regin (607:607:607) (607:607:607))
        (IOPATH datac regin (478:478:478) (478:478:478))
        (IOPATH datad regin (309:309:309) (309:309:309))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_lcell_register")
    (INSTANCE \\levelr\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT aclr (898:898:898) (898:898:898))
        (PORT clk (1261:1261:1261) (1241:1241:1241))
        (IOPATH (posedge clk) regout (224:224:224) (224:224:224))
        (IOPATH (posedge aclr) regout (283:283:283) (283:283:283))
      )
    )
    (TIMINGCHECK
      (SETUP datain (posedge clk) (37:37:37))
      (HOLD datain (posedge clk) (15:15:15))
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\countf\[1\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (565:565:565) (564:564:564))
        (PORT datac (594:594:594) (603:603:603))
        (IOPATH datab regin (607:607:607) (607:607:607))
        (IOPATH datac regin (478:478:478) (478:478:478))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_lcell_register")
    (INSTANCE \\countf\[1\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT aclr (898:898:898) (898:898:898))
        (PORT clk (1241:1241:1241) (1261:1261:1261))
        (IOPATH (posedge clk) regout (224:224:224) (224:224:224))
        (IOPATH (posedge aclr) regout (283:283:283) (283:283:283))
      )
    )
    (TIMINGCHECK
      (SETUP datain (posedge clk) (37:37:37))
      (HOLD datain (posedge clk) (15:15:15))
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\countf\[0\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (566:566:566) (564:564:564))
        (PORT datac (594:594:594) (603:603:603))
        (PORT datad (567:567:567) (557:557:557))
        (IOPATH datab regin (607:607:607) (607:607:607))
        (IOPATH datac regin (478:478:478) (478:478:478))
        (IOPATH datad regin (309:309:309) (309:309:309))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_lcell_register")
    (INSTANCE \\countf\[0\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT aclr (898:898:898) (898:898:898))
        (PORT clk (1241:1241:1241) (1261:1261:1261))
        (IOPATH (posedge clk) regout (224:224:224) (224:224:224))
        (IOPATH (posedge aclr) regout (283:283:283) (283:283:283))
      )
    )
    (TIMINGCHECK
      (SETUP datain (posedge clk) (37:37:37))
      (HOLD datain (posedge clk) (15:15:15))
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\countf\[2\]\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datab (567:567:567) (566:566:566))
        (PORT datac (594:594:594) (603:603:603))
        (PORT datad (560:560:560) (551:551:551))
        (IOPATH datab regin (607:607:607) (607:607:607))
        (IOPATH datac regin (478:478:478) (478:478:478))
        (IOPATH datad regin (309:309:309) (309:309:309))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_lcell_register")
    (INSTANCE \\countf\[2\]\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT aclr (898:898:898) (898:898:898))
        (PORT clk (1241:1241:1241) (1261:1261:1261))
        (IOPATH (posedge clk) regout (224:224:224) (224:224:224))
        (IOPATH (posedge aclr) regout (283:283:283) (283:283:283))
      )
    )
    (TIMINGCHECK
      (SETUP datain (posedge clk) (37:37:37))
      (HOLD datain (posedge clk) (15:15:15))
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\levelf\~I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT dataa (572:572:572) (567:567:567))
        (PORT datab (565:565:565) (563:563:563))
        (PORT datac (594:594:594) (603:603:603))
        (PORT datad (524:524:524) (529:529:529))
        (IOPATH dataa regin (738:738:738) (738:738:738))
        (IOPATH datab regin (607:607:607) (607:607:607))
        (IOPATH datac regin (478:478:478) (478:478:478))
        (IOPATH datad regin (309:309:309) (309:309:309))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_lcell_register")
    (INSTANCE \\levelf\~I\\.lereg)
    (DELAY
      (ABSOLUTE
        (PORT aclr (898:898:898) (898:898:898))
        (PORT clk (1241:1241:1241) (1261:1261:1261))
        (IOPATH (posedge clk) regout (224:224:224) (224:224:224))
        (IOPATH (posedge aclr) regout (283:283:283) (283:283:283))
      )
    )
    (TIMINGCHECK
      (SETUP datain (posedge clk) (37:37:37))
      (HOLD datain (posedge clk) (15:15:15))
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_lcell")
    (INSTANCE \\clk_div\~0_I\\.lecomb)
    (DELAY
      (ABSOLUTE
        (PORT datac (575:575:575) (587:587:587))
        (PORT datad (528:528:528) (531:531:531))
        (IOPATH datac combout (292:292:292) (292:292:292))
        (IOPATH datad combout (114:114:114) (114:114:114))
      )
    )
  )
  (CELL
    (CELLTYPE "cyclone_asynch_io")
    (INSTANCE \\clk_div\~I\\.asynch_inst)
    (DELAY
      (ABSOLUTE
        (PORT datain (816:816:816) (1093:1093:1093))
        (IOPATH datain padio (2124:2124:2124) (2124:2124:2124))
      )
    )
  )
)