counter16_top.syr

清华大学verilog hdl源码例子

Release 6.2i - xst G.28
Copyright (c) 1995-2004 Xilinx, Inc.  All rights reserved.
--> Parameter TMPDIR set to __projnav
CPU : 0.00 / 1.73 s | Elapsed : 0.00 / 1.00 s
 
--> Parameter xsthdpdir set to ./xst
CPU : 0.00 / 1.73 s | Elapsed : 0.00 / 1.00 s
 
--> Reading design: counter16_top.prj

TABLE OF CONTENTS
  1) Synthesis Options Summary
  2) HDL Compilation
  3) HDL Analysis
  4) HDL Synthesis
  5) Advanced HDL Synthesis
     5.1) HDL Synthesis Report
  6) Low Level Synthesis
  7) Final Report
     7.1) Device utilization summary
     7.2) TIMING REPORT


=========================================================================
*                      Synthesis Options Summary                        *
=========================================================================
---- Source Parameters
Input File Name                    : counter16_top.prj
Input Format                       : mixed
Ignore Synthesis Constraint File   : NO
Verilog Include Directory          : 

---- Target Parameters
Output File Name                   : counter16_top
Output Format                      : NGC
Target Device                      : xc2s200-6-pq208

---- Source Options
Top Module Name                    : counter16_top
Automatic FSM Extraction           : YES
FSM Encoding Algorithm             : Auto
FSM Style                          : lut
RAM Extraction                     : Yes
RAM Style                          : Auto
ROM Extraction                     : Yes
ROM Style                          : Auto
Mux Extraction                     : YES
Mux Style                          : Auto
Decoder Extraction                 : YES
Priority Encoder Extraction        : YES
Shift Register Extraction          : YES
Logical Shifter Extraction         : YES
XOR Collapsing                     : YES
Resource Sharing                   : YES
Multiplier Style                   : lut
Automatic Register Balancing       : No

---- Target Options
Add IO Buffers                     : YES
Global Maximum Fanout              : 100
Add Generic Clock Buffer(BUFG)     : 4
Register Duplication               : YES
Equivalent register Removal        : YES
Slice Packing                      : YES
Pack IO Registers into IOBs        : auto

---- General Options
Optimization Goal                  : Speed
Optimization Effort                : 1
Keep Hierarchy                     : NO
Global Optimization                : AllClockNets
RTL Output                         : Yes
Write Timing Constraints           : NO
Hierarchy Separator                : _
Bus Delimiter                      : <>
Case Specifier                     : maintain
Slice Utilization Ratio            : 100
Slice Utilization Ratio Delta      : 5

---- Other Options
lso                                : counter16_top.lso
Read Cores                         : YES
cross_clock_analysis               : NO
verilog2001                        : YES
Optimize Instantiated Primitives   : NO
tristate2logic                     : No

=========================================================================


=========================================================================
*                          HDL Compilation                              *
=========================================================================
Compiling source file "counter16.v"
Module <counter16> compiled
Compiling source file "counter16_top.v"
Module <counter16_top> compiled
No errors in compilation
Analysis of file <counter16_top.prj> succeeded.
 

=========================================================================
*                            HDL Analysis                               *
=========================================================================
Analyzing top module <counter16_top>.
Module <counter16_top> is correct for synthesis.
 
Analyzing module <counter16>.
Module <counter16> is correct for synthesis.
 

=========================================================================
*                           HDL Synthesis                               *
=========================================================================

Synthesizing Unit <counter16>.
    Related source file is counter16.v.
    Found 16-bit register for signal <clk16_out>.
    Summary:
	inferred  16 D-type flip-flop(s).
Unit <counter16> synthesized.


Synthesizing Unit <counter16_top>.
    Related source file is counter16_top.v.
WARNING:Xst:646 - Signal <counter_value<14:9>> is assigned but never used.
WARNING:Xst:646 - Signal <counter_value<7:0>> is assigned but never used.
Unit <counter16_top> synthesized.


=========================================================================
*                       Advanced HDL Synthesis                          *
=========================================================================

Advanced RAM inference ...
Advanced multiplier inference ...
Dynamic shift register inference ...

=========================================================================
HDL Synthesis Report

Macro Statistics
# Registers                        : 16
 1-bit register                    : 16

=========================================================================

=========================================================================
*                         Low Level Synthesis                           *
=========================================================================

Optimizing unit <counter16_top> ...

Optimizing unit <counter16> ...
Loading device for application Xst from file 'v200.nph' in environment C:/Xilinx.

Mapping all equations...
Building and optimizing final netlist ...
Found area constraint ratio of 100 (+ 5) on block counter16_top, actual ratio is 0.

=========================================================================
*                            Final Report                               *
=========================================================================
Final Results
RTL Top Level Output File Name     : counter16_top.ngr
Top Level Output File Name         : counter16_top
Output Format                      : NGC
Optimization Goal                  : Speed
Keep Hierarchy                     : NO

Design Statistics
# IOs                              : 4

Macro Statistics :
# Registers                        : 16
#      1-bit register              : 16

Cell Usage :
# BELS                             : 17
#      LUT1                        : 1
#      LUT1_L                      : 16
# FlipFlops/Latches                : 16
#      FDC_1                       : 16
# Clock Buffers                    : 1
#      BUFGP                       : 1
# IO Buffers                       : 3
#      IBUF                        : 1
#      OBUF                        : 2
=========================================================================

Device utilization summary:
---------------------------

Selected Device : 2s200pq208-6 

 Number of Slices:                      10  out of   2352     0%  
 Number of Slice Flip Flops:            16  out of   4704     0%  
 Number of 4 input LUTs:                17  out of   4704     0%  
 Number of bonded IOBs:                  3  out of    144     2%  
 Number of GCLKs:                        1  out of      4    25%  


=========================================================================
TIMING REPORT

NOTE: THESE TIMING NUMBERS ARE ONLY A SYNTHESIS ESTIMATE.
      FOR ACCURATE TIMING INFORMATION PLEASE REFER TO THE TRACE REPORT
      GENERATED AFTER PLACE-and-ROUTE.

Clock Information:
------------------
-----------------------------------+------------------------+-------+
Clock Signal                       | Clock buffer(FF name)  | Load  |
-----------------------------------+------------------------+-------+
counter16_clk16_out_14:Q           | NONE                   | 1     |
counter16_clk16_out_13:Q           | NONE                   | 1     |
CLK                                | BUFGP                  | 1     |
counter16_clk16_out_0:Q            | NONE                   | 1     |
counter16_clk16_out_1:Q            | NONE                   | 1     |
counter16_clk16_out_2:Q            | NONE                   | 1     |
counter16_clk16_out_3:Q            | NONE                   | 1     |
counter16_clk16_out_4:Q            | NONE                   | 1     |
counter16_clk16_out_5:Q            | NONE                   | 1     |
counter16_clk16_out_6:Q            | NONE                   | 1     |
counter16_clk16_out_7:Q            | NONE                   | 1     |
counter16_clk16_out_8:Q            | NONE                   | 1     |
counter16_clk16_out_9:Q            | NONE                   | 1     |
counter16_clk16_out_10:Q           | NONE                   | 1     |
counter16_clk16_out_11:Q           | NONE                   | 1     |
counter16_clk16_out_12:Q           | NONE                   | 1     |
-----------------------------------+------------------------+-------+

Timing Summary:
---------------
Speed Grade: -6

   Minimum period: 3.675ns (Maximum Frequency: 272.109MHz)
   Minimum input arrival time before clock: No path found
   Maximum output required time after clock: 7.085ns
   Maximum combinational path delay: No path found

Timing Detail:
--------------
All values displayed in nanoseconds (ns)

-------------------------------------------------------------------------
Timing constraint: Default period analysis for Clock 'counter16_clk16_out_14:Q'
Delay:               3.549ns (Levels of Logic = 1)
  Source:            counter16_clk16_out_15 (FF)
  Destination:       counter16_clk16_out_15 (FF)
  Source Clock:      counter16_clk16_out_14:Q falling
  Destination Clock: counter16_clk16_out_14:Q falling

  Data Path: counter16_clk16_out_15 to counter16_clk16_out_15
                                Gate     Net
    Cell:in->out      fanout   Delay   Delay  Logical Name (Net Name)
    ----------------------------------------  ------------
     FDC_1:C->Q            2   1.085   1.206  counter16_clk16_out_15 (counter16_clk16_out_15)
     LUT1_L:I0->LO         1   0.549   0.000  counter16__n00461 (counter16__n0046)
     FDC_1:D                   0.709          counter16_clk16_out_15
    ----------------------------------------
    Total                      3.549ns (2.343ns logic, 1.206ns route)
                                       (66.0% logic, 34.0% route)

-------------------------------------------------------------------------
Timing constraint: Default period analysis for Clock 'counter16_clk16_out_13:Q'
Delay:               3.549ns (Levels of Logic = 1)
  Source:            counter16_clk16_out_14 (FF)
  Destination:       counter16_clk16_out_14 (FF)
  Source Clock:      counter16_clk16_out_13:Q falling
  Destination Clock: counter16_clk16_out_13:Q falling

  Data Path: counter16_clk16_out_14 to counter16_clk16_out_14
                                Gate     Net
    Cell:in->out      fanout   Delay   Delay  Logical Name (Net Name)
    ----------------------------------------  ------------
     FDC_1:C->Q            2   1.085   1.206  counter16_clk16_out_14 (counter16_clk16_out_14)
     LUT1_L:I0->LO         1   0.549   0.000  counter16__n00441 (counter16__n0044)
     FDC_1:D                   0.709          counter16_clk16_out_14
    ----------------------------------------
    Total                      3.549ns (2.343ns logic, 1.206ns route)
                                       (66.0% logic, 34.0% route)

-------------------------------------------------------------------------
Timing constraint: Default period analysis for Clock 'CLK'
Delay:               3.549ns (Levels of Logic = 1)
  Source:            counter16_clk16_out_0 (FF)
  Destination:       counter16_clk16_out_0 (FF)
  Source Clock:      CLK falling
  Destination Clock: CLK falling

  Data Path: counter16_clk16_out_0 to counter16_clk16_out_0
                                Gate     Net
    Cell:in->out      fanout   Delay   Delay  Logical Name (Net Name)
    ----------------------------------------  ------------
     FDC_1:C->Q            2   1.085   1.206  counter16_clk16_out_0 (counter16_clk16_out_0)