Title :
Integrated power supply planning and floorplanning
Author :
Liu, I-Min ; Chen, Hung-Ming ; Chou, Tan-Li ; Aziz, Adnan ; Wong, D.F.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
One of the most challenging issues in today´s high-performance VLSI design is to ensure high-quality power supply to each individual circuit blocks. Reduced power supply voltage can result in slower cell switching, or even circuit failure. Nevertheless, most floorplanning methodologies have ignored power supply considerations. Thus, the resulting floorplan may suffer from local hot spots and insufficient power supply for certain circuit blocks. In this paper, we present an optimal power supply planning algorithm based on network flow to shorten the current paths from power bumps to local power supply wirings. We have incorporated our algorithm into a floorplanning algorithm for integrated floorplanning and power supply planning. Experimental results are encouraging
Keywords :
VLSI; circuit layout CAD; integrated circuit layout; power supply circuits; floorplanning algorithm; graph reduction; high-performance VLSI design; high-quality power supply; individual circuit blocks; integrated planning; local hot spots; network flow; network graph; optimal power supply planning algorithm; power bumps; Circuit noise; Design engineering; Noise reduction; Power engineering and energy; Power engineering computing; Power supplies; Routing; Switching circuits; Very large scale integration; Voltage;
Conference_Titel :
Design Automation Conference, 2001. Proceedings of the ASP-DAC 2001. Asia and South Pacific
Conference_Location :
Yokohama
Print_ISBN :
0-7803-6633-6
DOI :
10.1109/ASPDAC.2001.913372
