Method of identifying paths with delays dominated by a particular factor

A method of identifying timing paths in a digital network with timing delays dominated by a particular factor, said method comprising:

• partitioning timing delays in said digital network into portions attributable to a factor of interest and portions attributable to other factors;
• multiplying said timing delays by different weights based on said partitioning;
• using the multiplied timing delays to determine a relative timing delay impact of said factor of interest on the various paths in said digital network, wherein said different weights comprise any of a positive weight, a negative weight, and a zero weight;
• performing a node-based static timing analysis on said digital network using said multiplied timing delays;
• and
• identifying path endpoints of said digital network to which at least one path has a timing delay fraction attributable to said factor of interest which is greater than or equal to said first value.

A method of identifying timing paths in a digital network with timing delays dominated by a particular factor, said method comprising:

• partitioning timing delays in said digital network into portions attributable to a factor of interest and portions attributable to other factors;
• multiplying said timing delays by different weights based on said partitioning;
• using the multiplied timing delays to determine a relative timing delay impact of said factor of interest on the various paths in said digital network;
• using arrival times of timing signals at digital network path endpoints to determine an amount of total timing delay of any digital network path to an endpoint attributable to said factor of interest;
• and
• using timing margins at a timing test to determine whether said total timing delay due to said factor of interest on any path to a first side of any timing test is greater than a multiplicative factor of said total timing delay due to said factor of interest along any path to a second side of said timing test.

A method of performing node-based static timing analysis on a digital network, said method comprising:

• categorizing factors influencing signal timing delays in said digital network as being attributable to either a factor of interest or to other factors;
• attributing different weights to the timing delays based on said categorization to produce weighted timing delays;
• identifying network paths in said digital network comprising timing delays dominated by a particular factor of interest based on said weighted timing delays;
• using arrival times of timing signals at digital network path endpoints to determine an amount of total timing delay of any digital network path to an endpoint attributable to said factor of interest;
• and
• using timing margins at a timing test to determine whether said total timing delay due to said factor of interest on any path to a first side of any timing test is greater than a multiplicative factor of said total timing delay due to said factor of interest along any path to a second side of said timing test.