最近在看Static Timing Analysis for Nanometer Designs 这本书,感觉受益良多。但是书中关于net delay计算有疑问,希望大神能给与解答
在书中131页,介绍了计算net delay时把所有的电容看做对地电容,然后下面这段话很费解
Using the effective capacitance approach, the delay through the driving
cell and through the interconnect are obtained separately. The effective ca-
pacitance approach provides the delay through the driving cell as well as
the equivalent Thevenin source at the output of the cell. The delay through the interconnect is then computed separately using the Thevenin source.