CN1412647A - Circuit structure capable of regulating external frequency of central processor and its operation method - Google Patents
Circuit structure capable of regulating external frequency of central processor and its operation method Download PDFInfo
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- CN1412647A CN1412647A CN 01141269 CN01141269A CN1412647A CN 1412647 A CN1412647 A CN 1412647A CN 01141269 CN01141269 CN 01141269 CN 01141269 A CN01141269 A CN 01141269A CN 1412647 A CN1412647 A CN 1412647A
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Abstract
The present invention relates to a circuit structure capable of regulating external frequency of central processor and its operation method. When the user has need of regulating external frequency, the keyboard can be utilized to key in the external frequency value (for example 66 or 33. etc.), this moment, the keyboard controller can feed the control signal correspondent to the external frequency value into external frequency storage device for temporary storage, then the computer system is stopped by means of south-bridge circuit, and a wake-up circuit is used to wake up the south bridge circuit in a wake up time so as to start the computer system again, then the external frequency set value temporary-stored in external frequency storage device can be fed into clock generator.
Description
Technical field
The invention relates to a kind of outer frequency regulating circuit and method of operating thereof of central processing unit, and particularly regulate the method for the outer frequency of central processing unit and the realization on hardware thereof by Basic Input or Output System (BIOS) (BIOS) or application program relevant for a kind of.
Background technology
Computer industry develops very vigorously in recent years, because mobile computer has the maneuverability of height, also becomes one of indispensable important tool of business people now.When going out work, the continued power ability of battery has determined the service time of computing machine in the mobile computer, because battery capacity is limited, in order to prolong the service time of computing machine, saves power consumption and just seems very important.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of outer circuit structure and method of operating thereof frequently of central processing unit of regulating, to improve the service efficiency of power supply.
According to purpose of the present invention, propose a kind of scalable central processing unit outer frequently circuit structure and method of operating thereof and be summarized as follows:
Frequently can utilize the time the outer frequency value that keyboard sets institute's desire (for example 66 or 33 etc.) to key in outside the user need regulate, this moment, keyboard controller just can be corresponding to keeping in the outer storage device frequently of the control signal feed-in of value frequently in addition.Then south bridge circuit (South Bridge) just shuts down computer system, and utilizes wake-up circuit (for example in 1 second) in a wakeup time that south bridge circuit is waken up so that computer system is started shooting again.Then, outer storage device frequently can will be kept in outer frequency setting value feed-in clock generator wherein, and enable clock generator foundation frequency setting value in addition provides the CPU operation required outer frequency.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended accompanying drawing, be described in detail below.
Description of drawings
Fig. 1 is provided by the outer circuit structure calcspar frequently of a kind of scalable central processing unit that provides according to one embodiment of the present invention.
Drawing reference numeral explanation: 110: keyboard controller 120: outer storage device 130 frequently: south bridge circuit 140: wake-up circuit 150: clock generator.
Embodiment
Mobile computer high-order more and more now, central processing unit wherein (hereinafter to be referred as CPU) clock is also more and more higher, not only can carry out general document and handle, and has more multimedia and image-capable, and function is very powerful.With regard to present technology, the work clock of CPU is determined that by the product of outer frequency and frequency multiplication multiple for instance, if the frequency multiplication value of CPU is fixed on 8 frequencys multiplication, the work clock of CPU is 8 * 100MHz=800MHz when outer frequency value is 100MHz.Conception of the present invention is the outer frequency that can reduce CPU when mobile computer need not carried out the work of high-speed computation, and CPU is operated to save power supply with lower work clock.For example when document is handled, the outer 66MHz or lower that frequently is adjusted to reduce the loss of electric power, can be reached the purpose of extending battery life.
Please refer to Fig. 1, its expression is according to the outer circuit structure calcspar frequently of a kind of scalable central processing unit that one embodiment of the present invention provided.When the user just opens computing machine, can change the outer frequency of CPU by the setting of Basic Input or Output System (BIOS) (BISO), on the other hand, after the user has used a computer a period of time, can change the outer frequency of CPU via an application program of carrying out down in operating system (for example windows).Outside the user need regulate frequently the time, utilize the outer frequency value that keyboard sets institute's desire (for example 66 or 33 etc.) to key in, this moment, keyboard controller 110 can be corresponding to temporary in the outer storage device 120 frequently of the control signal CT feed-in of value frequently in addition.Then south bridge circuit 130 just starts outer change and a series of shutdown programm frequently, just via off signal PF computer system is shut down after finishing.On the other hand, when off signal PF produces just with its feed-in wake-up circuit (Wake Up) 140 in its startup, then wake-up circuit 140 can be in a wakeup time (for example 1 second) wakes it up in wake-up signal WP feed-in south bridge circuit 130, and then via south bridge circuit 130 computer system is started shooting again.Then, the outer frequency that outer storage device 120 frequently can will be kept in is wherein set feed-in clock generator (Clock Generator) 150, enable clock generator 150 provides the CPU operation required outer frequency according to setting frequently in addition, then carry out reentering operating system after a series of boot program, just finished the program that outer frequency is regulated.
Outer circuit structure and the method for operating thereof frequently of the disclosed adjusting central processing unit of the above embodiment of the present invention, its effect are to allow the user can be when not needing efficiency operation the operating frequency of CPU be reduced, to improve the service efficiency of power supply.
In sum; though the present invention with a preferred embodiment openly as above; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; can do various changes and variation, so protection scope of the present invention is as the criterion when looking the eye person of deciding of accompanying Claim scope institute.
Claims (11)
1. regulate the outer method frequently of central processing unit for one kind, this central processing unit is disposed in the computer system, and this computer system comprises outer storage device, a south bridge circuit frequently at least, and this method may further comprise the steps:
Setting one outer value frequently and storage are somebody's turn to do outer value frequently and extremely are somebody's turn to do outer storage device frequently;
The outer frequency of startup alters the procedure and closes this computer system;
In a wakeup time, wake this south bridge circuit up;
Again with this computer system power-on; And
According in should outer storage device frequently should outer value frequently, provide this central processing unit operation required outer frequency.
2. the outer method frequently of adjusting central processing unit as claimed in claim 1, wherein this computer system is a mobile computer.
3. the outer method frequently of adjusting central processing unit as claimed in claim 1, wherein this computer system is a desktop PC.
4. the outer method frequently of adjusting central processing unit as claimed in claim 1, wherein this wakeup time is about 1 second.
5. the outer method frequently of adjusting central processing unit as claimed in claim 1 wherein should be made up of a plurality of working storage by outer storage device frequently.
6. the outer circuit structure frequently of scalable central processing unit is disposed in the computer system, and this circuit structure comprises:
One keyboard controller is used the outer frequency value of setting this central processing unit;
One outer storage device frequently is coupled to this keyboard controller, is somebody's turn to do outer value frequently in order to keep in;
One south bridge circuit is in order to alter the procedure frequently outside starting and to close, open the power supply of this computer system;
One wake-up circuit is coupled in this south bridge circuit and the wakeup time after this computer system is closed this south bridge circuit is waken up; And
One clock generator is coupled to this outer storage device frequently, and according to stored should being worth by outer frequency of storage device frequently outside being somebody's turn to do, provides this central processing unit operation required outer frequency.
7. the outer circuit structure frequently of scalable central processing unit as claimed in claim 6, wherein this computer system is a mobile computer.
8. the outer circuit structure frequently of scalable central processing unit as claimed in claim 6, wherein this computer system is a desktop PC.
9. the outer circuit structure frequently of scalable central processing unit as claimed in claim 6, wherein this wakeup time is about 1 second.
10. the outer circuit structure frequently of scalable central processing unit as claimed in claim 6 wherein should be made up of a plurality of working storage by outer storage device frequently.
11. the outer circuit structure frequently of scalable central processing unit as claimed in claim 6, wherein this wake-up circuit is made up of resistance-capacitance circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01141269 CN1412647A (en) | 2001-10-11 | 2001-10-11 | Circuit structure capable of regulating external frequency of central processor and its operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01141269 CN1412647A (en) | 2001-10-11 | 2001-10-11 | Circuit structure capable of regulating external frequency of central processor and its operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1412647A true CN1412647A (en) | 2003-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01141269 Pending CN1412647A (en) | 2001-10-11 | 2001-10-11 | Circuit structure capable of regulating external frequency of central processor and its operation method |
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| CN (1) | CN1412647A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375941C (en) * | 2004-12-10 | 2008-03-19 | 威盛电子股份有限公司 | Computer system, basic input output system and system reset method |
| CN100377029C (en) * | 2005-09-30 | 2008-03-26 | 威盛电子股份有限公司 | Dynamic regulating circuit and method of basic time pulse signal for front and bus bar |
| CN100410846C (en) * | 2005-09-22 | 2008-08-13 | 联想(北京)有限公司 | Method for realizing real-time clock waking-up of notebook computer |
| CN103744501A (en) * | 2013-12-11 | 2014-04-23 | 中国科学院深圳先进技术研究院 | Frequency modulation method and device for mobile terminal CPU |
-
2001
- 2001-10-11 CN CN 01141269 patent/CN1412647A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375941C (en) * | 2004-12-10 | 2008-03-19 | 威盛电子股份有限公司 | Computer system, basic input output system and system reset method |
| CN100410846C (en) * | 2005-09-22 | 2008-08-13 | 联想(北京)有限公司 | Method for realizing real-time clock waking-up of notebook computer |
| CN100377029C (en) * | 2005-09-30 | 2008-03-26 | 威盛电子股份有限公司 | Dynamic regulating circuit and method of basic time pulse signal for front and bus bar |
| CN103744501A (en) * | 2013-12-11 | 2014-04-23 | 中国科学院深圳先进技术研究院 | Frequency modulation method and device for mobile terminal CPU |
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