Method and system for screening a VLSI design for inductive coupling noise
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United States of America Patent
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Nov 26, 2002
Grant Date -
N/A
app pub date -
Jul 19, 2001
filing date -
Jul 19, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method is disclosed for estimating inductive coupling noise of a signal on a transmission line in a circuit design stored in a computer memory. The method determines the capacitive coupling noise on the signal, adds inductive coupling noise, and compares the total to a specified maximum amount of noise. The inductive coupling is a percentage of a supply voltage, which percentage varies depending upon the transition rate of the signal, the resistance of the line, and the gate capacitance of a load on the line. The inductive coupling varies based on the circuit design and may be stored in a table having inductive coupling values for multiple design conditions. The table is created using a field solver to determine line characteristics and a circuit simulator to simulate inductive coupling noise. For each set of initial conditions, a worst-case inductive coupling value is recorded in the table.
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