Title :
Design and optimization of power/ground network for cell-based VLSIs with macro cells
Author :
Wu, Xiaohai ; Qiao, Changge ; Hong, Xianlong
Author_Institution :
Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
Abstract :
This paper deals with the design and optimization of mesh-based power/ground network for cell-based VLSIs with macro cells. These macro cells absorb a lot of current, furthermore, the current that each pin of the macro cell absorbs is not known, which introduces a new problem to the design of power routing. This problem has not been discussed so far. In this paper, a new algorithm is presented to solve this problem. The algorithm includes 3 sub-algorithms: searching feasible solution, cutting branches and minimizing strap width. The algorithm has achieved the object of minimizing the area of power straps with high running speed
Keywords :
VLSI; circuit layout CAD; circuit optimisation; equivalent circuits; integrated circuit layout; minimisation; network routing; network topology; branch cutting; cell-based VLSIs; feasible solution search; macro cells; mesh-based power/ground network; power routing; power/ground network design; power/ground network optimisation; strap width minimisation; Computer science; Design optimization; Network topology; Optimization methods; Pins; Power supplies; Rails; Routing; Very large scale integration; Wiring;
Conference_Titel :
Design Automation Conference, 1999. Proceedings of the ASP-DAC '99. Asia and South Pacific
Conference_Location :
Wanchai
Print_ISBN :
0-7803-5012-X
DOI :
10.1109/ASPDAC.1999.759700
