Motorola Corporation

Timothy J Jennings

Douglas W Schucker

Gregory Djaja

Sean C Tyler

Frederic B Shapiro

A method (10) for generating a table (26', 26') having independent (C.sub.L, e.sub.r) and dependent (P.sub.D) table model parameters is provided. An initial table (26) is generated by measuring actual values of the dependent table model parameters (P.sub.D) for corresponding independent table model parameters (C.sub.L, e.sub.r) and inserting the actual values into the initial table (26). Calculated table model parameters are generated by calculating values of the dependent table model parameters (P.sub.D) corresponding to independent table model parameters (C.sub.L, e.sub.r), wherein the corresponding independent table model parameters (C.sub.L, e.sub.r) are between the measured independent table model parameters (C.sub.L, e.sub.r). The calculated values are compared to measured values and if an error value exceeds a predetermined error tolerance level, the initial table (26) is updated by inserting the actual values of the dependent table model parameters (P.sub.D) for corresponding independent table model parameters (C.sub.L, e.sub.r).

Method for generating a table model of a device

A method for optimization of delay times in a digital circuit. The method comprises selecting a logic gate (12), and constructing a model (35) which predicts the delay time (27) of the logic gate (12). Varying the parameters which control the model to more accurately predict the delay time (48). Summing the delay time (48) due to each logic gate (12) which comprises the signal path. Repeating the method for each signal path within the digital circuit until all signal paths are computed. Modifying the digital circuit based on the calculated delay times (48) so as to better satisfy a predetermined measurement criteria.

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Chandler, AZ, United States of America

Timothy J Jennings