Patent ID: 7155696

Claim:
A method of interconnection routing, comprising the following steps: providing an aggressor connection path as a first net; providing a victim connection path according to the requirements of a second net; determining a voltage ramp time of the aggressor connection path, a victim total length of the victim connection path, a coupled wire length between the aggressor connection path and the victim connection path; and an equivalent load corresponding to the victim connection path; evaluating a noise metric according to the voltage ramp time, the victim total length, the coupled wire length and the equivalent load; modifying the victim connection path to shorten the coupled wire length if the noise metric is greater than a pre-determined value; and making the victim connection path the second net if the noise metric is less than the pre-determined value; wherein the noise metric is obtained by searching a coupling noise database according to the voltage ramp time, the victim total length, the coupled wire length and the equivalent load.