Patent ID: 6668356
Filing Date: 2003-12-23
Classification: G06F

Abstract:
A method for computer-aided design of a circuit having sections with different supply voltages, which comprises the steps of:creating a hardware description code of the circuit using logical circuit blocks; allocating a supply voltage to each of the logical circuit blocks; transforming the hardware description code into a net list containing logical cells and related connections, each of the logical cells corresponding to a cell type to which is added a unique identifier of the supply voltage to which a logical cell is assigned; assigning a connection attribute to each input and to each output of the logical cell; during the transforming step, the output of a first logical cell to be connected to the input of a second logical cell only when the output of the first logical cell and the input of the second logical cell have identical connection attributes; effecting an allocation of the connection attributes for inputs and outputs according to a predetermined assignment specification between a set of the identifiers and a set of the connection attributes; and carrying out an analysis of the circuit on a basis of the net list taking account of identifiers of the logical cells.