LSI design system
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMiwaka Takahashi, Masahiko Toyonaga
Life of this patent
Estimating the term…
Abstract
Based on a relative comparison of respective consumed powers of cells which are subjected to a layout, separation information on cells to be separated which are to be arranged in a spaced-apart manner from each other is generated by separation information generating means, and a layout is generated by layout generating means based on this separation information. Accordingly, it is no more necessary to rearrange cells or to form a layout of the entire circuit again after generating an initial layout. Furthermore, it is no more necessary to set wide spacing between wirings. Still furthermore, the occurrence of noise is prevented.
Claims16
An LSI design system comprising;
- separation information generating means which generates separation information on cells to be separated which are to be arranged in a spaced-apart manner from each other based on a relative comparison of respective consumed powers of cells which are subjected to a layout, and
- layout generating means which generates a layout based on said separation information.
An LSI design system comprising;
- division information generating means which generates division information which divides all cells to be subjected to a layout into a plurality of groups which have substantially equal consumed powers, and
- layout generating means which generates a layout arranged per each group unit based on said division information generated by said division information generating means.
An LSI design system comprising;
- separation information generating means which generates information on wirings to be separated which are to be spaced apart from each other based on a comparison of signal operation timing information of respective wirings which are subjected to a layout, and
- layout generating means which generates a layout based on said separation information.
An LSI design system comprising;
- separation information generating means which extracts wirings to be separated which are to be arranged in a spaced apart manner from each other based on the junction number of every wiring, and
- layout generating means which generates a layout based on said separation information.
Dependencies are inferred from the claim text.