| 摘要 |
An LSI designing method using one or more functional blocks each containing two or more flip flops, includes the following: preparing a timing model which can be used under a first mode and a second mode; performing functional design of some functional elements each of which includes one or more functional blocks; carrying out logic composition with respect to the functional elements decided by the functional design using the timing model of the functional blocks under the first mode; performing a first timing analysis with respect to the functional elements on which logic composition was carried out using the timing model under the first mode; performing layout based on the result of the logic composition and the first timing analysis; and performing a second timing analysis after the layout using the timing model under the second mode.
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