clk_div5.fit.rpt

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.

; clk_div~0 ; 1                   ;
+-----------+---------------------+


+---------------------------------------------------+
; Interconnect Usage Summary                        ;
+----------------------------+----------------------+
; Interconnect Resource Type ; Usage                ;
+----------------------------+----------------------+
; C4s                        ; 0 / 8,840 ( 0 % )    ;
; Direct links               ; 1 / 11,506 ( < 1 % ) ;
; Global clocks              ; 1 / 8 ( 13 % )       ;
; LAB clocks                 ; 1 / 156 ( < 1 % )    ;
; LUT chains                 ; 0 / 2,619 ( 0 % )    ;
; Local interconnects        ; 1 / 11,506 ( < 1 % ) ;
; M4K buffers                ; 0 / 468 ( 0 % )      ;
; R4s                        ; 0 / 7,520 ( 0 % )    ;
+----------------------------+----------------------+


+--------------------------------------------------------------------------+
; LAB Logic Elements                                                       ;
+--------------------------------------------+-----------------------------+
; Number of Logic Elements  (Average = 9.00) ; Number of LABs  (Total = 1) ;
+--------------------------------------------+-----------------------------+
; 1                                          ; 0                           ;
; 2                                          ; 0                           ;
; 3                                          ; 0                           ;
; 4                                          ; 0                           ;
; 5                                          ; 0                           ;
; 6                                          ; 0                           ;
; 7                                          ; 0                           ;
; 8                                          ; 0                           ;
; 9                                          ; 1                           ;
; 10                                         ; 0                           ;
+--------------------------------------------+-----------------------------+


+------------------------------------------------------------------+
; LAB-wide Signals                                                 ;
+------------------------------------+-----------------------------+
; LAB-wide Signals  (Average = 1.00) ; Number of LABs  (Total = 1) ;
+------------------------------------+-----------------------------+
; 1 Clock                            ; 1                           ;
+------------------------------------+-----------------------------+


+---------------------------------------------------------------------------+
; LAB Signals Sourced                                                       ;
+---------------------------------------------+-----------------------------+
; Number of Signals Sourced  (Average = 9.00) ; Number of LABs  (Total = 1) ;
+---------------------------------------------+-----------------------------+
; 0                                           ; 0                           ;
; 1                                           ; 0                           ;
; 2                                           ; 0                           ;
; 3                                           ; 0                           ;
; 4                                           ; 0                           ;
; 5                                           ; 0                           ;
; 6                                           ; 0                           ;
; 7                                           ; 0                           ;
; 8                                           ; 0                           ;
; 9                                           ; 1                           ;
+---------------------------------------------+-----------------------------+


+-------------------------------------------------------------------------------+
; LAB Signals Sourced Out                                                       ;
+-------------------------------------------------+-----------------------------+
; Number of Signals Sourced Out  (Average = 1.00) ; Number of LABs  (Total = 1) ;
+-------------------------------------------------+-----------------------------+
; 0                                               ; 0                           ;
; 1                                               ; 1                           ;
+-------------------------------------------------+-----------------------------+


+---------------------------------------------------------------------------+
; LAB Distinct Inputs                                                       ;
+---------------------------------------------+-----------------------------+
; Number of Distinct Inputs  (Average = 1.00) ; Number of LABs  (Total = 1) ;
+---------------------------------------------+-----------------------------+
; 0                                           ; 0                           ;
; 1                                           ; 1                           ;
+---------------------------------------------+-----------------------------+


+-----------------+
; Fitter Messages ;
+-----------------+
Info: *******************************************************************
Info: Running Quartus II Fitter
    Info: Version 5.1 Build 176 10/26/2005 SJ Full Version
    Info: Processing started: Mon May 28 16:37:35 2007
Info: Command: quartus_fit --read_settings_files=off --write_settings_files=off clk_div5 -c clk_div5
Info: Selected device EP1C3T144C8 for design "clk_div5"
Info: Fitter is performing an Auto Fit compilation, which may decrease Fitter effort to reduce compilation time
Info: Device migration not selected. If you intend to use device migration later, you may need to change the pin assignments as they may be incompatible with other devices
    Info: Device EP1C6T144C8 is compatible
Info: No exact pin location assignment(s) for 2 pins of 2 total pins
    Info: Pin clk_div not assigned to an exact location on the device
    Info: Pin clk not assigned to an exact location on the device
Info: Detected fmax, tsu, tco, and/or tpd requirements -- optimizing circuit to achieve only the specified requirements
Info: Performing register packing on registers with non-logic cell location assignments
Info: Completed register packing on registers with non-logic cell location assignments
Info: Completed User Assigned Global Signals Promotion Operation
Info: DQS I/O pins require 0 global routing resources
Info: Automatically promoted signal "clk" to use Global clock in PIN 17
Info: Completed Auto Global Promotion Operation
Info: Starting register packing
Info: Started Fast Input/Output/OE register processing
Info: Finished Fast Input/Output/OE register processing
Info: Fitter is using Normal packing mode for logic elements with Auto setting for Auto Packed Registers logic option
Info: Moving registers into I/O cells, LUTs, and RAM blocks to improve timing and density
Info: Finished moving registers into I/O cells, LUTs, and RAM blocks
Info: Finished register packing
Info: Statistics of I/O pins that need to be placed that use the same VCCIO and VREF, before I/O pin placement
    Info: Number of I/O pins in group: 1 (unused VREF, 3.30 VCCIO, 0 input, 1 output, 0 bidirectional)
        Info: I/O standards used: LVTTL.
Info: I/O bank details before I/O pin placement
    Info: Statistics of I/O banks
        Info: I/O bank number 1 does not use VREF pins and has unused VCCIO pins. 3 total pin(s) used --  19 pins available
        Info: I/O bank number 2 does not use VREF pins and has unused VCCIO pins. 0 total pin(s) used --  28 pins available
        Info: I/O bank number 3 does not use VREF pins and has unused VCCIO pins. 0 total pin(s) used --  26 pins available
        Info: I/O bank number 4 does not use VREF pins and has unused VCCIO pins. 0 total pin(s) used --  28 pins available
Info: Fitter placement preparation operations beginning
Info: Fitter placement preparation operations ending: elapsed time is 00:00:00
Info: Fitter placement operations beginning
Info: Fitter placement was successful
Info: Fitter placement operations ending: elapsed time is 00:00:00
Info: Estimated most critical path is register to register delay of 0.936 ns
    Info: 1: + IC(0.000 ns) + CELL(0.000 ns) = 0.000 ns; Loc. = LAB_X1_Y4; Fanout = 4; REG Node = 'countr[1]'
    Info: 2: + IC(0.627 ns) + CELL(0.309 ns) = 0.936 ns; Loc. = LAB_X1_Y4; Fanout = 2; REG Node = 'levelr'
    Info: Total cell delay = 0.309 ns ( 33.01 % )
    Info: Total interconnect delay = 0.627 ns ( 66.99 % )
Info: Fitter routing operations beginning
Info: Fitter routing operations ending: elapsed time is 00:00:00
Info: The Fitter performed an Auto Fit compilation.  Optimizations were skipped to reduce compilation time.
    Info: Optimizations that may affect the design's routability were skipped
    Info: Optimizations that may affect the design's timing were skipped
Info: Completed Fixed Delay Chain Operation
Info: Started post-fitting delay annotation
Info: Delay annotation completed successfully
Info: Completed Auto Delay Chain Operation
Info: Quartus II Fitter was successful. 0 errors, 0 warnings
    Info: Processing ended: Mon May 28 16:37:37 2007
    Info: Elapsed time: 00:00:03