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Power-saving method of central processor

A technology of a central processing unit and a power-saving method, which is applied in the direction of data processing power supply, etc.

Active Publication Date: 2006-06-28
VIA TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the defects of the existing central processing unit power-saving method, and provide a new central processing unit power-saving method, the technical problem to be solved is to make when the central processing unit is unable to peek at the event When the dormant state of the peripheral device sends out the bus master request event, it drives the central processing unit to leave the dormant state in which the event cannot be peeped into and immediately enters the dormant state in which the event can be peeked, so that the central processing unit can process the bus master request event and After processing, return to the dormant state where the event cannot be peeped, so as to achieve the purpose of saving power, which is more suitable for practical use

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Embodiment Construction

[0037] In order to further explain the technical means and effects that the present invention takes to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the power saving method for the central processing unit proposed according to the present invention, its specific implementation, method, Steps, features and effects thereof are described in detail below.

[0038] see figure 2 and image 3 , which is a block diagram and a flowchart of an embodiment of the present invention. As shown in step S0, the central processing unit 10 of the computer system is in the state C3 where events cannot be viewed. In order to prevent the central processing unit 10 from peeping into the C3 state, before the operating system drives the central processing unit 10 into the C3 state, it will drive the system chip 20 to close the arbiter 23 until it leaves the C3 state, so that the system chip 20 cannot pass the arbitratio...

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Abstract

An electricity¿Csaving method of central processor includes driving central processor to not pick up command, driving central processor to depart from domaint state of event not being able to perk and driving it to enter domaint state of event being able to perk as well as starting up arbitrator, requesting event to central processor for processing by bus master controller, closing arbitrator, driving central processor to depart from domaint state of event being able to perk and to enter it to domaint state of event not being able to perk when processing of event requested by bus master controller is finished by central processor.

Description

technical field [0001] The invention relates to a method for saving power of a central processing unit, in particular to a processing method when the central processing unit is in a dormant state unable to snoop (snoop) an event and a bus master controller requests an event, so as to save power. Background technique [0002] In addition to being used for lighting, electricity is also used for many important purposes, such as household appliances, vehicles, communication devices, etc. Without electricity, these appliances, vehicles, etc. will not be able to operate. Therefore, how to develop an economical, effective and environmentally friendly power supply is a technology that the whole world is eager for. However, before this technology has not broken through, I am afraid that only saving electricity is the most effective electricity consumption measure. Taking computers as an example, the power consumption of desktop computers or notebook computers has always been one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32
Inventor 黄文俊黄宗庆
Owner VIA TECH INC