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AssigneeCadence Design Systems, Inc.
InventorsLifeng Wu, Jianlin Wei, I-Hsien Chen
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The invention allows the inclusion of cross-talk coupling and other noise in circuit simulation by considering the details a resultant glitch in more detail than just its peak value. A set of parameters represents the noise, with an exemplary embodiment using a triangle approximation to a glitch based on a set of three parameters: the peak voltage value, the leading edge slope and the trailing edge slope. These values are then used as the input stimulus to a given cell instance in the network in which the result propagated noise values, also in a triangle approximation, are determined by a simulation. The results can be stored as a library so that, given the parameters of the input noise and the particular cell, a simulation can determine the propagated noise through a look-up process. To reduce the space requirements of the library, the dimensionality of the look-up tables can be reduced through the introduction of a set of auxiliary functions to offset error from this reduction.
A method of determining noise propagation in an integrated circuit, comprising:
16 The method of claim 1, further comprising:
A computer readable storage device embodying a program of instructions executable by a computer to perform a method of determining noise propagation in an integrated circuit, said method comprising:
A method for transmitting a program of instructions executable by a computer to perform a process of determining noise propagation in an integrated circuit, said process comprising:
A computer readable storage device embodying a program of instructions executable by a computer to perform a method of simulating the operation of an integrated circuit, said method comprising:
A method for transmitting a program of instructions executable by a computer to perform a process of simulating the operation of an integrated circuit, said process comprising:
A method of simulating the operation of an integrated circuit, comprising:
Dependencies are inferred from the claim text.