clocktop.twr

一个在Xilinx spartan3实现的时钟

--------------------------------------------------------------------------------
Release 6.1i Trace G.23
Copyright (c) 1995-2003 Xilinx, Inc.  All rights reserved.

D:/Xilinx/bin/nt/trce.exe -intstyle ise -e 3 -l 3 -xml clocktop clocktop.ncd -o
clocktop.twr clocktop.pcf


Design file:              clocktop.ncd
Physical constraint file: clocktop.pcf
Device,speed:             xc3s400,-4 (PREVIEW 1.26 2003-06-19)
Report level:             error report

Environment Variable      Effect 
--------------------      ------ 
NONE                      No environment variables were set
--------------------------------------------------------------------------------

INFO:Timing:2698 - No timing constraints found, doing default enumeration.
INFO:Timing:2752 - To get complete path coverage, use the unconstrained paths
   option. All paths that are not constrained will be reported in the
   unconstrained paths section(s) of the report.


Data Sheet report:
-----------------
All values displayed in nanoseconds (ns)

Clock clk to Pad
------------+------------+------------------+--------+
            | clk (edge) |                  |  Clock |
Destination | to PAD     |Internal Clock(s) |  Phase |
------------+------------+------------------+--------+
N<0>        |   18.213(R)|clk_BUFGP         |   0.000|
N<1>        |   17.584(R)|clk_BUFGP         |   0.000|
N<2>        |   17.639(R)|clk_BUFGP         |   0.000|
N<3>        |   17.596(R)|clk_BUFGP         |   0.000|
N<4>        |   17.204(R)|clk_BUFGP         |   0.000|
N<5>        |   17.312(R)|clk_BUFGP         |   0.000|
N<6>        |   18.429(R)|clk_BUFGP         |   0.000|
N<7>        |   17.879(R)|clk_BUFGP         |   0.000|
P<0>        |   13.054(R)|clk_BUFGP         |   0.000|
P<1>        |   13.162(R)|clk_BUFGP         |   0.000|
P<2>        |   13.021(R)|clk_BUFGP         |   0.000|
P<3>        |   12.507(R)|clk_BUFGP         |   0.000|
------------+------------+------------------+--------+

Clock to Setup on destination clock clk
---------------+---------+---------+---------+---------+
               | Src:Rise| Src:Fall| Src:Rise| Src:Fall|
Source Clock   |Dest:Rise|Dest:Rise|Dest:Fall|Dest:Fall|
---------------+---------+---------+---------+---------+
clk            |    9.971|         |         |         |
---------------+---------+---------+---------+---------+

Analysis completed Wed Aug 01 22:11:22 2007
--------------------------------------------------------------------------------

Peak Memory Usage: 61 MB