期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：51
期号：1
出版社：Journal of Theoretical and Applied
摘要：With the rapid increase of complexity and size of the on-chip microcontroller system (OCMS), the power consumption issue for the OMCS is increasingly becoming critical and needs to be solved quickly. Because the CPU is often the major power consumer in the OCMS, so an important strategy to achieve energy saving is via the dynamic voltage and frequency scaling (DVFS), which can enable a processor to operate at a range of voltages and frequencies. However, it needs to be emphasized that the conventional DVFS is fully executed by the software scheduler in the operating system, and its main drawback is that the scheduler can’t accurately track the performance requirements of CPU when the dormant frequency of CPU is increasing continuously. In this paper, we firstly present a typical hardware DVFS architecture, which can automatically carry out DVFS without the software scheduler involvement. Therefore, it avoids increasing the software's workload and reduces the power consumption.
