| 摘要 |
The present invention is generally directed to a system and method for approximating the coupling cross- a node in a circuit and determining whether the coupling voltage noise exceeds a permissible value. In accordance with one aspect of the invention, a method uses a first circuit model to obtain a total resistance value of a conductor extending between a driver configured to drive the node and a receiver, and uses a second circuit model to determine a total capacitance. The method also determines an aggressor coupling capacitance between the node and an aggressor signal using at least one criteria, and computes a ground capacitance by subtracting the aggressor coupling capacitance from the total capacitance. The method also determines the effective resistance of the driver, and a weighted average rise time for all aggressor signals on the node. Using a third circuit model, with the values determined above, the method simulates the third circuit model to determine whether the coupling voltage noise of the node exceeds a predetermined value.
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