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[求助] 一个奇怪的问题

[求助] 一个奇怪的问题

我的一个设计,在VertexII下实现的,稍微改一个无关紧要的地方,和DSP联调的结果差异很大(DSP的软件和硬件平台是被另一个功能一样的用另一种hdl语言写的设计验证过的)。很迷茫。请前辈们指教。


下面是一些报告:










Number of Slices containing only related logic:fficeffice" />


990


990


100%

Device Utilization Summary:
 
   Number of BUFGMUXs                 13 out of 16     81%
   Number of External IOBs            45 out of 484     9%
      Number of LOCed IOBs            44 out of 45     97%
 
   Number of SLICEs                  990 out of 14336   6%
   Number of TBUFs                   445 out of 7168    6%
WARNINGlace:83 - This design either uses more than 8 clock buffers or has
   clock buffers locked into primary and secondary sites. Since only one clock
   buffer output signal from a primary / secondary pair may enter any clock
   region it is necessary to partition the clock logic being driven by these
   clocks into different clock regions. It may be possible through Floorplanning
   all or just part of the logic being driven by the Global clocks to achieve a
   legal placement for this design................
WARNING:CLK Net:dump[3]
may have excessive skew because 7 NON-CLK pins
failed to route using a CLK template.
 
WARNING:CLK Net:dump[0]
may have excessive skew because 7 NON-CLK pins
failed to route using a CLK template.
 
WARNING:CLK Net:dump[1]
may have excessive skew because 7 NON-CLK pins
failed to route using a CLK template.
 
WARNING:CLK Net:dump[2]
may have excessive skew because 7 NON-CLK pins
failed to route using a CLK template.
多谢指教,我还有一个问题,我的内部模块用了三态门,三态门的控制信号是由DSP的时序产生的译码信号,会不会有隐患?
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