A method and device for fine-grained frequency modulation of a processor

Abstract

The invention discloses a fine-granularity frequency modulation method of a processor. A clock turning-off way of the processor is used for realizing the fine-granularity regulation of the working frequency of the processor, the initial clock of the processor is selectively subjected to turning-off processing according to frequency modulation parameters M and N, and the clock is used as the working clock of a processor module after being turned off. The invention also provides a fine-granularity frequency modulation device of the processor. The fine-granularity frequency modulation device comprises a processor module, a storage module, a bus module, a clock generation module and a frequency modulation control module, wherein the frequency modulation control module is used for receiving the frequency modulation parameters M and N, a processor initial clock and a bus clock fed back from the clock generation module, and generating a frequency modulation rear clock and feeding back the frequency modulation rear clock into the processor module. The invention provides the fine-granularity frequency modulation method and device of the processor, and the fine-granularity frequency modulation method and device has the advantages of low power consumption, good effect, simple mechanism and low hardware expenditure.

Description

technical field [0001] The invention belongs to the field of system chip design, in particular to a method and device for fine-grained frequency modulation of a processor. Background technique [0002] Power consumption is a key metric for SoC chips. Excellent energy performance means longer working hours and standby times for chips and complete systems. Divided from the level of low-power technology, the low-power technology of the system chip mainly includes low power consumption at the circuit level, low power consumption at the logic level and low power consumption at the architecture level. Among them, low power consumption at the circuit level is mainly achieved by using digital circuit units with lower energy consumption, specifically including low-voltage digital circuit units and high-threshold digital circuit units. Low power consumption at the logic level mainly includes clock gating technology, operand isolation technology, etc. There are many low-power techno...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing frequency modulation methods, such as coarse granularity and poor low power consumption effect, the present invention provides a fine-grained frequency modulation method and device for processors with good low power consumption effect, simple mechanism, and low hardware overhead.

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