问答 #32106 - 11.4 TRCE - I am seeing an extremely large number of paths analyzed in my timing report
11.4 TRCE - I am seeing an extremely large number of paths analyzed in my timing report
| 问答编号# | 32106 |
| 专题 | Timing Analyzer/TRCE |
| 最后更新日期 | 2010-02-16 01:02:24.0 |
| 记录状态 | Active |
| 器件 | - |
| 设计工具 | ISE Design Suite - 10.1;ISE Design Suite - 10.1 sp1;ISE Design Suite - 10.1 sp2;ISE Design Suite - 10.1 sp3;ISE Design Suite - 11.1;ISE Design Suite - 11.2;ISE Design Suite - 11.3;ISE Design Suite - 11.4 |
| IP | - |
| 开发板与电缆 | - |
疑问描述
I am seeing unreasonably large number of paths analyzed in my timing reports. How can I verify that these numbers are correct?
解决方案
As the levels of logic increase, the number of paths can increase by an amazing amount. This is not always the case, but if paths go from several components to several components and have several levels of logic between them, then these numbers grow very quickly.
Numbers so large that they wrap around the timing report several times have been seen, and after checking several of the paths we were able to conclude that TRCE is performing the correct analysis. While we are unable to go in and check every path, because of the high number of paths, we are able to reproduce small scale designs that have a relatively small path count and are able to prove that the analysis is correct.