Title :
Determination of Power Gating Granularity for FPGA Fabric
Author :
Rahman, Arifur ; Das, Satyaki ; Tuan, Tim ; Trimberger, Steve
Author_Institution :
Xilinx Res. Labs, San Jose , CA
Abstract :
In this study, we present a design methodology to determine the granularity of power gating for field programmable gate arrays (FPGAs). Fine-grain power gating is more effective than coarse-grain power gating to reduce the active leakage power of unused logic and interconnection resources. However, the area overhead in fine-grain power gating is higher than that of coarse-grain power gating. Based on the placement and routing of benchmark designs in Spartan-3trade-like FPGA, guidelines for determining the granularity of power gating are provided. It is found that programmable resources with low utilization can be power gated more coarsely than the resources with high utilization
Keywords :
fabrics; field programmable gate arrays; logic design; FPGA fabric; Spartan-3trade-like FPGA; active leakage power reduction; coarse-grain power gating; field programmable gate arrays; fine-grain power gating; power gating granularity determination; CMOS logic circuits; CMOS technology; Fabrics; Field programmable gate arrays; Leakage current; Logic gates; Power dissipation; Programmable logic arrays; Routing; Sleep;
Conference_Titel :
Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
1-4244-0075-9
Electronic_ISBN :
1-4244-0076-7
DOI :
10.1109/CICC.2006.320938
