CN100377029C - Dynamic regulating circuit and method of basic time pulse signal for front and bus bar - Google Patents
Dynamic regulating circuit and method of basic time pulse signal for front and bus bar Download PDFInfo
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- CN100377029C CN100377029C CNB2005101079562A CN200510107956A CN100377029C CN 100377029 C CN100377029 C CN 100377029C CN B2005101079562 A CNB2005101079562 A CN B2005101079562A CN 200510107956 A CN200510107956 A CN 200510107956A CN 100377029 C CN100377029 C CN 100377029C
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Abstract
The present invention relates to a dynamic adjustment circuit and a dynamic adjustment method of a basic time pulse signal of a front end bus bar. When a central processing unit of a computer operates, the present invention adjusts a phase-locked loop of the computer for generating a value of a scale factor of the basic time pulse signal of the front end bus bar, and the frequency of the basic time pulse signal is adjusted. The present invention receives a selection signal through a bridge connection unit for correspondingly outputting an adjustment signal to a judgment unit, and the judgment unit judges the adjustment signal and correspondingly outputs a judgment signal to a scale parameter adjustment unit. The scale parameter adjustment unit adjusts the value of a first scale parameter of the scale factor presently used by the phase-locked loop according to the judgment signal, and outputs the value of the first scale parameter to the phase-locked loop. Therefore, when receiving a fixed time pulse signal and generating the basic time pulse signal, the phase-locked loop can generate the basic time pulse signal of the front end bus bar according to the value of the first scale parameter after adjustment, and the frequency of the basic time pulse signal is adjusted.
Description
Technical field
The present invention relates to a kind of adjustment circuit and method, the dynamic adjustment circuit and the method that particularly relate to the basic time pulse signal of a kind of adjustment front end bus-bar (Front Side Bus), it can dynamically adjust the frequency of the basic time pulse signal of front end bus-bar when CPU (central processing unit) operates.
Background technology
Computing machine (is a computer, below all be called computing machine) invention, can be described as one of of paramount importance scientific and technological invention in last century, it significantly promotes the treatment effeciency of the common people in work, many paperworks of company in the past for example, be to carry out in the mode that personnel utilize paper, pen to write, so quite consuming time.In addition, the research staff promptly must expend the considerable time and carry out complicated experiment after visualizing new product concept in the past, and whether feasible, quite tiring if using affirmation.Now because the invention of computing machine is arranged, make the document treatment people can the fast processing paperwork, significantly promote processing speed and efficient, more can utilize computing machine to carry out simulation softward for the research staff, can simulate the new product of being conceived fast, to obtain quite facility of preliminary result, so can quicken to research and develop the speed of new product, bring the common people considerable facility in work by above-mentioned visible computing machine.In addition, computing machine also can provide the common people at listoning music after work or watch film, promotes the common people's quality of the life.Hence one can see that, and computing machine becomes the indispensable product of the common people now, adds the appearance of portable computer, makes society to use a computer more expediently, and brings the more convenience of the common people now.
Though portable computer is very convenient, owing to portable computer is sent as an envoy to the time spent outside, must be by battery power supply, so can be restricted its service time.Portable computer manufacturer now then designs various power saving modes in order to prolong the service time of portable computer when the battery power supply, orders about battery and can bring into play maximum service efficiency.In addition, because the CPU (central processing unit) of computer-internal is one of element of power consumption maximum, so most now power saving mode mostly is by the running speed that reduces CPU (central processing unit), to reach purpose of power saving.
Seeing also shown in Figure 1ly, is the calcspar of the frequency of operation of the existing adjustment CPU (central processing unit) of commonly using.As shown in the figure, one clock pulse generator 10 of computing machine, include a phase-locked loop 12, it receives fixedly time pulse signal and foundation one scale factor that a crystal oscillator 15 is produced, and produce a main frame time pulse signal to CPU (central processing unit) 20 and north bridge chips 30, this main frame time pulse signal is to be the basic time pulse signal of the front end bus-bar 33 between CPU (central processing unit) 20 and the north bridge chips 30, and its frequency can be expressed as:
f＝f
0*M/N (1)
Wherein, f is the frequency for basic time pulse signal, f
0Be the frequency of the fixedly time pulse signal that produced for crystal oscillator 15, M/N is a scale factor, and M and N are respectively the molecular parameter and the denominator parameter of scale factor.
Accept above-mentioned, one phase-locked loop 36 of north bridge chips 30 is to receive the basic time pulse signal that phase-locked loop 12 is exported, produce the work time pulse signal of front end bus-bar 33, running for north bridge chips 30 control front end bus-bars 33, and the basic time pulse signal that the 25 same reception phase-locked loops 12, a phase-locked loop of CPU (central processing unit) 20 are exported, and the work time pulse signal of generation CPU (central processing unit) 20 operates according to this work time pulse signal for CPU (central processing unit) 20.From the above, as adjusting the processing speed of CPU (central processing unit) 20, the frequency of the basic time pulse signal that can be produced by the phase-locked loop 12 of adjustment clock pulse generator 10 is reached.
Adjust the mode of basic time pulse signal now, mostly be to order about one of portable device by software to embed controller (Embedded Controller) 40, see through the value of the inside working storage of a system management bus-bar 45 (SystemManagement Bus) change clock pulse generator 10, with molecular parameter and the denominator parameter of scale factor of change phase-locked loop 12, so can order about phase-locked loop 12 and adjust the generation basic time pulse signals.Yet, this kind orders about the mode that controller 40 sees through 45 adjustment of system management bus-bar that embeds by software, process is quite numerous and diverse, so it is poor to adjust efficient, this external cause sees through the operating system that the adjustment mode of system management bus-bar 45 can't coupled computer and uses, so promptly can't can detect the software program collocation of the operating load of CPU (central processing unit) 20 with being installed on operating system uses, that is existing known adjustment mode can't adjust the basic time pulse signal of front end bus-bar 33 automatically according to the operating load amount of CPU (central processing unit) 20, so can't effectively reach the purpose of saving power supply.
Therefore, the present invention promptly proposes a kind of dynamic adjustment circuit and method of basic time pulse signal of front end bus-bar at the problems referred to above, not only can improve existing known techniques and adjust numerous and diverse shortcoming, the software program that is installed on operating system of can arranging in pairs or groups again uses, operating load with the foundation CPU (central processing unit), and adjust the frequency of the basic time pulse signal of front end bus-bar automatically, to improve the efficient of power saving.
This shows that the mode of above-mentioned existing adjustment basic time pulse signal obviously still has inconvenience and defective, and demands urgently further being improved in structure, method and use.In order to solve the problem that the mode of adjusting basic time pulse signal exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product and method do not have appropriate design to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of dynamic adjustment circuit and method of basic time pulse signal of new front end bus-bar, just become the current industry utmost point to need improved target.
Because the defective that the mode of above-mentioned existing adjustment basic time pulse signal exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, dynamic adjustment circuit and method in the hope of the basic time pulse signal of founding a kind of new front end bus-bar, can improve the mode of general existing adjustment basic time pulse signal, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Fundamental purpose of the present invention is, overcome the existing defective of mode of existing adjustment basic time pulse signal, and provide a kind of dynamic adjustment circuit and method of basic time pulse signal of new front end bus-bar, technical matters to be solved is it to be received by bridge-jointing unit select signal, corresponding output is adjusted signal to clock pulse generator, order about the basic time pulse signal that the clock pulse generator adjustment produces the front end bus-bar, and can reach the purpose of simple and easy adjustment, thereby be suitable for practicality more.
Another object of the present invention is to, overcome the existing defective of mode of existing adjustment basic time pulse signal, and provide a kind of dynamic adjustment circuit and method of basic time pulse signal of new front end bus-bar, technical matters to be solved is that its software program collocation with the operating load that can detect CPU (central processing unit) is used, operating load situation with the foundation CPU (central processing unit), automatically adjust the basic time pulse signal of front end bus-bar, and then the processing speed of adjustment CPU (central processing unit), and can reach the purpose of effective saving power supply, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.The dynamic adjustment circuit of the basic time pulse signal of a kind of front end bus-bar that proposes according to the present invention, it is when the CPU (central processing unit) running of a computing machine, adjust the value of a scale factor that a phase-locked loop is used to produce this basic time pulse signal of this front end bus-bar at present, frequency with this basic time pulse signal of adjusting this front end bus-bar, should dynamically adjust circuit comprises: a bridge-jointing unit, receive one and select signal, signal is adjusted in corresponding output one, and this adjustments signal is one to increase and adjust signal frequently or be one to subtract frequency and adjust signal; One judging unit is judged this adjustment signal, adjust signal frequently or adjust signal frequently for this subtracts for this increases to confirm this adjustment signal, and signal is judged in corresponding output one; And a scale parameter adjustment unit, judge signal according to this, adjust this scale factor one first scale parameter value and export this phase-locked loop to; Wherein, this phase-locked loop reception one is time pulse signal fixedly, this first scale parameter and one second scale parameter according to this scale factor, produce this basic time pulse signal of this front end bus-bar, when this phase-locked loop receives adjusted this first scale parameter of this scale parameter adjustment unit output, to dynamically adjust this basic time pulse signal that produces this front end bus-bar according to this second scale parameter and adjusted this first scale parameter.
The object of the invention to solve the technical problems also adopts following technical measures further to realize.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, wherein said first scale parameter are a part parameters for this scale factor, and this second scale parameter is the denominator parameter for this scale factor.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, wherein said scale parameter adjustment unit is according to this judgement signal, this first scale parameter that this phase-locked loop is used at present carries out addition with an adjustment parameter or subtracts each other, to adjust this first scale parameter.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, wherein said adjustment parameter are the preset parameters for fixed value.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, it more includes one and adjusts parameter determining unit, it provides the plural first scale parameter section and corresponding plural number is adjusted parameter, this adjustment parameter determining unit is pairing this first scale parameter section of this first scale parameter that uses at present according to this phase-locked loop, and exports pairing this adjustment parameter to this scale parameter adjustment unit.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, wherein the software program by described computing machine is according to the operating load of this CPU (central processing unit), ordering about this CPU (central processing unit) sends selecting signal to this bridge-jointing unit, export this adjustment signal with correspondence, and adjust the value of this first scale parameter, order about this basic time pulse signal that this phase-locked loop adjustment produces this front end bus-bar.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, wherein said software program can be a CPU (central processing unit) and drive formula, an operating system formula or a power management formula.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, wherein said bridge-jointing unit can be a South Bridge chip.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, wherein said judging unit, scale parameter adjustment unit and phase-locked loop can be arranged at a clock pulse generator.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, it more comprises user's interface, this user's interface can send this selection signal to this bridge-jointing unit.
The dynamic adjustment circuit of the basic time pulse signal of aforesaid front end bus-bar, wherein said user's interface are to be a keyboard, and wherein this keyboard comprises at least one adjustment button.
The object of the invention to solve the technical problems also realizes by the following technical solutions.The dynamic adjusting method of the basic time pulse signal of a kind of front end bus-bar that proposes according to the present invention, it is when the CPU (central processing unit) running of a computing machine, a phase-locked loop of adjusting this computing machine is used to produce the value of a scale factor of this basic time pulse signal of this front end bus-bar at present, frequency with this basic time pulse signal of adjusting this front end bus-bar, this dynamic adjusting method may further comprise the steps: receive one and select signal, signal is adjusted in corresponding output one, and this adjustments signal is one to increase and adjust signal frequently or be one to subtract frequency and adjust signal; Judge this adjustment signal, adjust signal frequently or adjust signal frequently for this increases to confirm this adjustment signal, and signal is judged in corresponding output one for this subtracts; And, adjust the value of one first scale parameter of this scale factor according to this judgement signal; Wherein, this phase-locked loop reception one is time pulse signal fixedly, this first scale parameter and one second scale parameter according to this scale factor, produce this basic time pulse signal of this front end bus-bar, when receiving this adjusted this first scale parameter, this phase-locked loop will adjust this basic time pulse signal that produces this front end bus-bar according to this second scale parameter and adjusted this first scale parameter of this scale factor.
The object of the invention to solve the technical problems also adopts following technical measures further to realize.
The dynamic adjusting method of the basic time pulse signal of aforesaid front end bus-bar, wherein said first scale parameter are a part parameters for this scale factor, and this second scale parameter is the denominator parameter for this scale factor.
The dynamic adjusting method of the basic time pulse signal of aforesaid front end bus-bar, wherein receiving a selection signal, the step of signal is adjusted in corresponding output one, it is the operating load according to this CPU (central processing unit), corresponding this selection signal that produces, to adjust the value of this first scale parameter, adjust this basic time pulse signal that produces this front end bus-bar.
The dynamic adjusting method of the basic time pulse signal of aforesaid front end bus-bar, wherein at operating load according to this CPU (central processing unit), corresponding this selection signal that produces, step with the value of adjusting this first scale parameter, be to use the operating load of a software program of this computing machine according to this CPU (central processing unit), order about corresponding this selection signal that produces of this CPU (central processing unit),, adjust this basic time pulse signal that produces this front end bus-bar to adjust the value of this first scale parameter.
The dynamic adjusting method of the basic time pulse signal of aforesaid front end bus-bar, wherein said software program can be a CPU (central processing unit) and drive formula, an operating system formula or a power management formula.
The dynamic adjusting method of the basic time pulse signal of aforesaid front end bus-bar, wherein judging signal according to this, adjust the step of value of one first scale parameter of this scale factor, be according to this judgement signal, this first scale parameter that uses is at present carried out addition with an adjustment parameter or subtract each other, to adjust the value of this first scale parameter.
The dynamic adjusting method of the basic time pulse signal of aforesaid front end bus-bar, wherein said adjustment parameter are the preset parameters for fixed value.
The dynamic adjusting method of the basic time pulse signal of aforesaid front end bus-bar, it more includes a step, it provides the plural first scale parameter section and corresponding plural number is adjusted parameter, according to pairing this first scale parameter section of this first scale parameter that is used to produce this basic time pulse signal at present, export pairing being somebody's turn to do and adjust parameter, to carry out addition with present this first scale parameter or to subtract each other, to adjust the value of this first scale parameter.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present invention thes contents are as follows: the dynamic adjustment circuit and the method that the invention provides a kind of basic time pulse signal of front end bus-bar, be when the CPU (central processing unit) running of computing machine, the value of a scale factor that is used to produce the basic time pulse signal of front end bus-bar by a phase-locked loop of adjusting computing machine is to reach the purpose of dynamic adjustment basic time pulse signal.Dynamic adjustment circuit of the present invention includes a bridge-jointing unit, a judging unit and a scale parameter adjustment unit.Dynamic adjusting method of the present invention is to receive one by bridge-jointing unit to select signal, adjust signal to judging unit with correspondence output one, adjusting signal for judgment unit judges is to adjust signal frequently or be frequency reducing adjustment signal for increasing, judge that with correspondence output one signal is to the scale parameter adjustment unit, the scale parameter adjustment unit will according to judge signal adjust this scale factor one first scale parameter value and transfer to the phase-locked loop, so promptly adjust the value that the phase-locked loop is used to produce the scale factor of basic time pulse signal, so the phase-locked loop is receiving fixing time pulse signal and during according to the basic time pulse signal of first scale parameter of scale factor and second scale parameter generation front end bus-bar, will produce the basic time pulse signal of front end bus-bar according to the adjusted first scale parameter adjustment, so can and then dynamically adjust the frequency of operation of CPU (central processing unit) and front end bus-bar.
By technique scheme, the dynamic adjustment circuit and the method for the basic time pulse signal of front end bus-bar of the present invention have following advantage at least:
The present invention utilizes bridge-jointing unit to receive to select signal and corresponding output to increase frequently or subtract adjustment signal frequently, judge for judging unit, and corresponding output judges that signal is to the scale parameter adjustment unit, the molecular parameter or the denominator parameter that are used to produce the scale factor of basic time pulse signal with adjustment, produce basic time pulse signal for the phase-locked loop according to adjusted value, use the processing speed of adjusting CPU (central processing unit), when hanging down load condition, downgrade processing speed to order about CPU (central processing unit), and can save power supply, and increase processing speed when being in high load condition in the centre unit, so can improve the efficient of power management.
The dynamic adjustment circuit and the method for the basic time pulse signal of front end bus-bar of the present invention, receive the selection signal by bridge-jointing unit, corresponding output is adjusted signal to clock pulse generator, order about the basic time pulse signal that the clock pulse generator adjustment produces the front end bus-bar, and can reach the purpose of simple and easy adjustment, thereby be suitable for practicality more.
The dynamic adjustment circuit and the method for the basic time pulse signal of front end bus-bar of the present invention, it can use with the software program collocation of the operating load that can detect CPU (central processing unit), operating load situation with the foundation CPU (central processing unit), automatically adjust the basic time pulse signal of front end bus-bar, and then the processing speed of adjustment CPU (central processing unit), and can reach the purpose of effective saving power supply, thereby be suitable for practicality more.
In sum, the dynamic adjustment circuit and the method for the basic time pulse signal of the front end bus-bar that the present invention is special, mainly be when the CPU (central processing unit) running of computing machine, a phase-locked loop of adjusting computing machine is used to produce the value of a scale factor of the basic time pulse signal of front end bus-bar, to adjust the frequency of basic time pulse signal, the present invention receives one by a bridge-jointing unit and selects signal to adjust signal to a judging unit with correspondence output one, this adjustment signal is one to increase and frequently adjust signal or be one to subtract and adjust signal frequently, judgment unit judges is adjusted signal and is adjusted signal frequently or adjust signal frequently for this subtracts for this increases to confirm this adjustment signal, and signal to scale parameter adjustment unit is judged in corresponding output one, allow this scale parameter adjustment unit according to judge signal adjust the at present used scale factor in phase-locked loop first scale parameter value and export the phase-locked loop to, so this phase-locked loop is receiving one fixedly during time pulse signal generation basic time pulse signal, promptly can produce the basic time pulse signal of front end bus-bar, and adjust the frequency of basic time pulse signal according to the value of adjusted first scale parameter.It has above-mentioned plurality of advantages and practical value, and in like product and method, do not see have similar structures design and method to publish or use and really genus innovation, no matter it all has bigger improvement on product structure, method of adjustment or function, have technically than much progress, and produced handy and practical effect, and the mode of more existing adjustment basic time pulse signal has the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the calcspar of the frequency of operation of the existing adjustment CPU (central processing unit) of commonly using.
Fig. 2 is the calcspar of one embodiment of the invention.
Fig. 3 is the oscillogram of adjustment signal of the present invention.
Fig. 4 is the calcspar of another embodiment of the present invention.
Fig. 5 is the process flow diagram of one embodiment of the invention.
Fig. 6 is the calcspar of another embodiment of the present invention.
10: clock pulse generator 12: phase-locked loop
15: crystal oscillator 20: CPU (central processing unit)
25: phase-locked loop 30: north bridge chips
33: front end bus-bar 36: phase-locked loop
40: embed controller 45: the system management bus-bar
50: clock pulse generator 52: phase-locked loop
54: crystal oscillator 56: judging unit
58: scale parameter adjustment unit 59: adjust parameter determining unit
60: CPU (central processing unit) 65: phase-locked loop
70: north bridge chips 73: the front end bus-bar
76: phase-locked loop 80: bridge-jointing unit
82: keyboard 84: adjust button
86: adjust button
Embodiment
Reach technological means and the effect thereof that predetermined goal of the invention is taked in order further to set forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, dynamic adjustment circuit and its embodiment of method, structure, method of adjustment, step, feature and the effect thereof of the basic time pulse signal of the front end bus-bar that foundation the present invention is proposed, describe in detail as after.
Seeing also shown in Figure 2ly, is the calcspar of a preferred embodiment of the present invention.As shown in the figure, the phase-locked loop 52 of clock pulse generator 50 is that the fixedly time pulse signal that receiving crystal oscillator 54 is produced also produces basic time pulse signal according to the scale factor (M/N) shown in (1) formula, produce the work time pulse signal of CPU (central processing unit) 60 with the phase-locked loop 65 that transfers to CPU (central processing unit) 60, should also transmit the phase-locked loop 76 of basic time pulse signal in outer phase-locked loop 52, with the work time pulse signal of the front end bus-bar 73 that produces 70 of CPU (central processing unit) 60 and north bridge chips to north bridge chips 70.
The present invention is can be when CPU (central processing unit) 60 operates for the user, the phase-locked loop 52 of adjusting clock pulse generator 50 is used to produce the value of the scale factor of basic time pulse signal, to adjust the frequency of the basic time pulse signal of being exported phase-locked loop 52, and then adjust the processing speed of CPU (central processing unit) 60, and can reduce power supply that CPU (central processing unit) 60 expends or the treatment efficiency that improves CPU (central processing unit) 60.Dynamic adjustment circuit of the present invention includes a bridge-jointing unit 80, a judging unit 56 and a scale parameter adjustment unit 58, and wherein, judging unit 56 and scale parameter adjustment unit 58 can be located at clock pulse generator 50 as the phase-locked loop 52.
Adjustment mode of the present invention does not need must adjust basic time pulse signal as existing commonly using by the system management bus-bar as the adjustment technology, the first embodiment of the present invention is that the software program monitoring CPU (central processing unit) 60 of coupled computer is learnt the operating load that CPU (central processing unit) 60 is present, order about CPU (central processing unit) 60 send one select signal to bridge-jointing unit 80 to adjust basic time pulse signal.Wherein, software program is to can be CPU (central processing unit) to drive formula, operating system formula or power management formula.Bridge-jointing unit 80 receptions are selected behind the signal correspondence output to be represented to increase frequency or subtract one of frequency to adjust signal to judging unit 56, for this judging unit 56 judgements, send a judgement signal to scale parameter adjustment unit 58 with correspondence.Wherein, bridge-jointing unit 80 of the present invention can be the South Bridge chip of computing machine.
Above-mentioned selection signal is the order that can be the specific I/O port of reading or write bridge-jointing unit 80, supply bridge-jointing unit 80 according to the specific I/O port that is read or writes, the adjustment signal of corresponding output distinct pulse widths in an output pin position, to represent the frequency of desiring to downgrade or increase basic time pulse signal respectively, when for example reading or writing one first I/O port of bridge-jointing unit 80, this bridge-jointing unit 80 promptly can corresponding output clock pulse width T
1For frequently adjusting signal (as shown in Figure 3) less than increasing of 300ns, representative increases basic time pulse signal.If when reading or writing one second I/O port of bridge-jointing unit 80, bridge-jointing unit 80 promptly can corresponding output clock pulse width T
2For frequently adjusting signal (as shown in Figure 3) greater than subtracting of 500ns, representative downgrades basic time pulse signal.
Accept above-mentioned, increase frequency or subtract adjustment signal frequently to judging unit 56 when bridge-jointing unit 80 sends, this judging unit 56 promptly can be according to the clock pulse width of adjusting signal, judge that the adjustment signal that is received is to adjust signal frequently or adjust signal frequently for subtracting for increasing, and correspondence is sent the judgement signal to scale parameter adjustment unit 58, order about this scale parameter adjustment unit 58 and adjust the molecular parameter M of the scale factor shown in (1) formula, and adjusted molecular parameter transferred to phase-locked loop 52, the fixedly time pulse signal that these phase-locked loop 52 receiving crystal oscillators 54 like this are produced, when producing the basic time pulse signal of front end bus-bar 73, be to produce basic time pulse signal according to denominator parameter N originally and 58 adjusted molecular parameters of scale parameter adjustment unit, so can adjust the frequency of basic time pulse signal.
During the frequency shift of the basic time pulse signal that is produced when phase-locked loop 52, the frequency of the work time pulse signal that the phase-locked loop 65 of CPU (central processing unit) 60 is produced also can be along with the frequency shift of the basic time pulse signal that is received, so promptly can adjust the processing speed of CPU (central processing unit) 60, to reduce the spent power supply of CPU (central processing unit) 60 or to promote the treatment efficiency of CPU (central processing unit) 60.The mode of the value of the molecular parameter M of the resize ratio factor of the present invention, be phase-locked loop 52 to be used at present to produce the value of molecular parameter M of basic time pulse signal and the adjustment parameter Δ of a fixed value, carry out addition or subtract each other, increasing or to downgrade the value of molecular parameter M, and then adjust the frequency of basic time pulse signal.
Please cooperate and consult shown in the following table of comparisons one, be the table of comparisons that one embodiment of the invention are adjusted basic time pulse signal.
The table of comparisons one:
| Basic time pulse signal f (MHz) | Fixing time pulse signal f 0(MHz) | Molecular parameter M | The denominator parameter N | Adjust the parameter Δ |
| 105 | 14.31818 | 733 | 100 | 7 |
| 104 | 14.31818 | 726 | 100 | 7 |
| 103 | 14.31818 | 719 | 100 | 7 |
| 102 | 14.31818 | 712 | 100 | 7 |
| 101 | 14.31818 | 705 | 100 | 7 |
| 100 | 14.31818 | 698 | 100 | 7 |
| 99 | 14.31818 | 691 | 100 | 7 |
| 98 | 14.31818 | 684 | 100 | 7 |
| 98 | 14.31818 | 677 | 100 | 7 |
| 96 | 14.31818 | 670 | 100 | 7 |
| 95 | 14.31818 | 663 | 100 | 7 |
Below cooperate the table of comparisons one, illustrate the mode that the present invention adjusts basic time pulse signal, suppose the frequency f of the fixedly time pulse signal that present phase-locked loop 52 is received
0Be 14.31818MHz, and molecular parameter M and denominator parameter N are respectively 698 and 100, so the frequency f of the phase-locked loop 52 present basic time pulse signals that produce is 100MHz, the adjustment signal that is received when judging unit 56 is for subtracting when frequently adjusting signal, judging unit 56 can correspondingly be exported the judgement signal of frequency reducing to scale parameter adjustment unit 58, scale parameter adjustment unit 58 promptly can be shown in the table of comparisons one, the value (698) of phase-locked loop 52 present employed molecular parameter M and the adjustment parameter Δ of fixed value (7) are subtracted each other, to obtain adjusted molecular parameter M (691) and to transfer to phase-locked loop 52, so phase-locked loop 52 promptly can produce basic time pulse signal according to adjusted molecular parameter M (691), the frequency f of the basic time pulse signal that produced this moment will come down to 99MHz, so can reduce the processing speed of CPU (central processing unit) 60, and save power supply.
In like manner, as when desiring to increase the frequency of basic time pulse signal, it is adjustment parameter Δ addition with value (698) Yu the fixed value (7) of phase-locked loop 52 present employed molecular parameter M, and the value (705) of gained transferred to phase-locked loop 52, can order about phase-locked loop 52 generation frequencies is the basic time pulse signal of 101MHz, to improve the processing speed of CPU (central processing unit) 60.In addition, the present invention also can use the fixedly mode of multiplying power, adjusts molecular parameter M, when promptly adjusting the frequency of basic time pulse signal, is the frequency that can increase or reduce basic time pulse signal in the fixing mode of multiplying power at every turn.In addition, the present invention also can be by the value of adjusting the denominator parameter N, the frequency of the basic time pulse signal that adjustment phase-locked loop 52 is produced.
From the above, but being the software program of coupled computer, the present invention carries out the operating load of system monitoring to learn that CPU (central processing unit) 60 is present, order about CPU (central processing unit) 60 and send the selection signal to bridge-jointing unit 80, send to increase frequently to adjust signal or subtract with correspondence and adjust signal frequently, and then increase or downgrade the frequency of basic time pulse signal, so self-adjusting purpose can be reached, and province's electrical efficiency can be improved.
The second embodiment of the present invention be available for users to according to computed demand see through user's interface send select signal to bridge-jointing unit 80 to adjust basic time pulse signal, for example see through to push to adjust button or click and adjust image (Icon).See also shown in Figure 4, keyboard 82 among the figure is user's interface, the user can be according to present computed demand, push the adjustment button 84 on the keyboard 82 or adjust button 86 and the lifting of adjustment basic time pulse signal, with work efficiency or the province's electrical efficiency that improves CPU (central processing unit) 60.For example, the user pushes and adjusts button 84 and order about keyboard 82 and send and select signal to bridge-jointing unit 80, and this bridge-jointing unit 80 promptly can corresponding output clock pulse width T
1For frequently adjusting signal (as shown in Figure 3) less than increasing of 300ns, representative increases the frequency of basic time pulse signal, can order about bridge-jointing unit 80 output clock pulse width T if push 86 of buttons of adjustment
2For frequently adjusting signal (as shown in Figure 3) greater than subtracting of 500ns, expression reduces the frequency of basic time pulse signal, and all the other operation principles state clearly in the first embodiment of the present invention afterwards, do not repeat them here.
Seeing also shown in Figure 5ly, is the process flow diagram of one embodiment of the invention.When software program according to the present operating load of CPU (central processing unit) 60, ordering about CPU (central processing unit) 60 sends when selecting signal or user to see through user's interface transmission selection signal desire adjustment basic time pulse signal, at first bridge-jointing unit 80 receives and selects the corresponding output of signal to increase frequently or subtract adjustment signal frequently shown in step S1; Then, judging unit 56 is judged the corresponding output judgement of the adjustment signal that is received signal shown in step S2; Afterwards, scale parameter adjustment unit 58 is shown in step S3, the value of one first scale parameter of the scale factor of foundation judgement signal adjustment phase-locked loop 52 also transfers to phase-locked loop 52, and this first scale parameter can be the molecular parameter or the denominator parameter of scale factor; When the fixedly time pulse signal that phase-locked loop 52 is produced at receiving crystal oscillator 54 produces basic time pulse signal, promptly can be shown in step S4, produce basic time pulse signal according to adjusted first scale parameter, so can adjust the frequency of basic time pulse signal, and then the processing speed of adjustment CPU (central processing unit) 60, to save power supply or to promote usefulness.
Seeing also shown in Figure 6ly, is the calcspar of another embodiment of the present invention; As shown in the figure, this embodiment is different from the foregoing description and is, scale parameter adjustment unit 58 more is coupled with one and adjusts parameter determining unit 59.Seeing also shown in the following table of comparisons two, is the table of comparisons that another embodiment of the present invention is adjusted basic time pulse signal.
The table of comparisons two:
| Basic time pulse signal section f (MHz) | Fixing time pulse signal f 0(MHz) | Molecular parameter section M | The denominator parameter N | Adjust the parameter Δ |
| 111～120 | 14.31818 | 775.24～ 838.10 | 100 | 6.98 |
| 101～110 | 14.31818 | 705.40～ 768.25 | 100 | 10.48 |
| 91～100 | 14.31818 | 635.56～ 698.41 | 100 | 13.97 |
| 81～90 | 14.31818 | 565.72～ 628.57 | 100 | 10.48 |
| 71～80 | 14.31818 | 495.87～ 558.73 | 100 | 6.98 |
| 61～70 | 14.31818 | 426.03～ 488.89 | 100 | 3.49 |
As
Shown in the above-mentioned table of comparisons two, this embodiment is divided into plural section with basic time pulse signal according to frequency range, and be provided with highest frequency value (120MHz) and lowest frequency value (61MHz), so can avoid adjusting too high or the low degree of stability that influences CPU (central processing unit) 60 of mistake because of basic time pulse signal.Each basic time pulse signal section is the corresponding a part parameter section of difference, each molecular parameter section is the adjustment parameter of the corresponding different fixing value of difference, adjusting parameter determining unit 59 is the pairing molecular parameter sections of molecular parameter that use at present according to phase-locked loop 52, and export pairing adjustment parameter to scale parameter adjustment unit 58, to carry out addition with the phase-locked loop 52 present molecular parameters that use or to subtract each other.
Below please cooperate and consult shown in the table of comparisons two, exemplify an embodiment and describe.Suppose that phase-locked loop 52 is that the generation frequency is the basic time pulse signal of 95MHz at present, molecular parameter and denominator parameter are respectively 663.49 and 100, when so desire is adjusted time pulse signal, adjusting parameter determining unit 59 can be according to the present pairing molecular parameter section of molecular parameter (663.49) (635.56～698.41) in phase-locked loop 52, and corresponding delivery value is that 13.97 adjustment parameter is to scale parameter adjustment unit 58, to carry out addition with present molecular parameter (663.49) or to subtract each other.
By the above-mentioned table of comparisons two as can be known, frequency as basic time pulse signal is 100MHz originally, when the frequency of basic time pulse signal is adjusted to when high more or low more, pairing adjustment parameter is low more, so can avoid excessively adjusting the frequency of basic time pulse signal, and influence the degree of stability of CPU (central processing unit) 60.
In sum, the dynamic adjustment circuit and the method for the basic time pulse signal of front end bus-bar of the present invention, be to utilize bridge-jointing unit to receive to select signal and corresponding output to increase frequently or subtract adjustment signal frequently, the confession judging unit is judged and corresponding output judges that signal is to the scale parameter adjustment unit, the molecular parameter or the denominator parameter that are used to produce the scale factor of basic time pulse signal with adjustment, produce basic time pulse signal for the phase-locked loop according to adjusted value, use the processing speed of adjusting CPU (central processing unit), when hanging down load condition, downgrade processing speed to order about CPU (central processing unit), and can save power supply, and increase processing speed when being in high load condition in the centre unit, so can improve the efficient of power management.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention and the described shape of claim, structure, feature and spirit, to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (19)
1. the dynamic adjustment circuit of the basic time pulse signal of a front end bus-bar, it is when the CPU (central processing unit) running of a computing machine, adjust the value of a scale factor that a phase-locked loop is used to produce this basic time pulse signal of this front end bus-bar at present, with the frequency of this basic time pulse signal of adjusting this front end bus-bar, it is characterized in that this dynamically adjusts circuit and comprise:
One bridge-jointing unit receives one and selects signal, and signal is adjusted in corresponding output one, and this adjustments signal is one to increase and adjust signal frequently or be one to subtract frequency and adjust signal;
One judging unit is judged this adjustment signal, adjust signal frequently or adjust signal frequently for this subtracts for this increases to confirm this adjustment signal, and signal is judged in corresponding output one; And
One scale parameter adjustment unit is judged signal according to this, adjust this scale factor one first scale parameter value and export this phase-locked loop to;
Wherein, this phase-locked loop reception one is time pulse signal fixedly, this first scale parameter and one second scale parameter according to this scale factor, produce this basic time pulse signal of this front end bus-bar, when this phase-locked loop receives adjusted this first scale parameter of this scale parameter adjustment unit output, to dynamically adjust this basic time pulse signal that produces this front end bus-bar according to this second scale parameter and adjusted this first scale parameter.
2. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 1, it is characterized in that wherein said first scale parameter is a part parameter for this scale factor, this second scale parameter is the denominator parameter for this scale factor.
3. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 1, it is characterized in that wherein said scale parameter adjustment unit is according to this judgement signal, this first scale parameter that this phase-locked loop is used at present carries out addition with an adjustment parameter or subtracts each other, to adjust this first scale parameter.
4. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 3 is characterized in that wherein said adjustment parameter is the preset parameter for fixed value.
5. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 3, it is characterized in that it more includes one and adjusts parameter determining unit, it provides the plural first scale parameter section and corresponding plural number is adjusted parameter, this adjustment parameter determining unit is pairing this first scale parameter section of this first scale parameter that uses at present according to this phase-locked loop, and exports pairing this adjustment parameter to this scale parameter adjustment unit.
6. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 1, it is characterized in that wherein a software program by described computing machine is according to the operating load of this CPU (central processing unit), order about this CPU (central processing unit) correspondence and send this selection signal to this bridge-jointing unit, export this adjustment signal with correspondence, and adjust the value of this first scale parameter, order about this basic time pulse signal that this phase-locked loop adjustment produces this front end bus-bar.
7. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 6 is characterized in that wherein said software program is that a CPU (central processing unit) drives formula, an operating system formula or a power management formula.
8. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 1 is characterized in that wherein said bridge-jointing unit is a South Bridge chip.
9. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 1 is characterized in that wherein said judging unit, scale parameter adjustment unit and phase-locked loop are arranged at a clock pulse generator.
10. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 1 is characterized in that it more comprises user's interface, and this user's interface can send this selection signal to this bridge-jointing unit.
11. the dynamic adjustment circuit of the basic time pulse signal of front end bus-bar according to claim 10 is characterized in that wherein said user's interface is to be a keyboard, wherein this keyboard comprises at least one adjustment button.
12. the dynamic adjusting method of the basic time pulse signal of a front end bus-bar, it is when the CPU (central processing unit) running of a computing machine, a phase-locked loop of adjusting this computing machine is used to produce the value of a scale factor of this basic time pulse signal of this front end bus-bar at present, frequency with this basic time pulse signal of adjusting this front end bus-bar is characterized in that this dynamic adjusting method may further comprise the steps:
Receive one and select signal, signal is adjusted in corresponding output one, and this adjustments signal is one to increase and adjust signal frequently or be one to subtract frequency and adjust signal;
Judge this adjustment signal, adjust signal frequently or adjust signal frequently for this increases to confirm this adjustment signal, and signal is judged in corresponding output one for this subtracts; And
Judge signal according to this, adjust the value of one first scale parameter of this scale factor;
Wherein, this phase-locked loop reception one is time pulse signal fixedly, this first scale parameter and one second scale parameter according to this scale factor, produce this basic time pulse signal of this front end bus-bar, when receiving this adjusted this first scale parameter, this phase-locked loop will adjust this basic time pulse signal that produces this front end bus-bar according to this second scale parameter and adjusted this first scale parameter of this scale factor.
13. the dynamic adjusting method of the basic time pulse signal of front end bus-bar according to claim 12, it is characterized in that wherein said first scale parameter is a part parameter for this scale factor, this second scale parameter is the denominator parameter for this scale factor.
14. the dynamic adjusting method of the basic time pulse signal of front end bus-bar according to claim 12, it is characterized in that wherein receiving a selection signal, the step of signal is adjusted in corresponding output one, it is operating load according to this CPU (central processing unit), corresponding this selection signal that produces, to adjust the value of this first scale parameter, adjust this basic time pulse signal that produces this front end bus-bar.
15. the dynamic adjusting method of the basic time pulse signal of front end bus-bar according to claim 14, it is characterized in that wherein at operating load according to this CPU (central processing unit), corresponding this selection signal that produces, step with the value of adjusting this first scale parameter, be to use the operating load of a software program of this computing machine according to this CPU (central processing unit), order about corresponding this selection signal that produces of this CPU (central processing unit), to adjust the value of this first scale parameter, adjust this basic time pulse signal that produces this front end bus-bar.
16. the dynamic adjusting method of the basic time pulse signal of front end bus-bar according to claim 15 is characterized in that wherein said software program is that a CPU (central processing unit) drives formula, an operating system formula or a power management formula.
17. the dynamic adjusting method of the basic time pulse signal of front end bus-bar according to claim 12, it is characterized in that wherein according to this judgement signal, adjust the step of value of one first scale parameter of this scale factor, be according to this judgement signal, this first scale parameter that uses is at present carried out addition with an adjustment parameter or subtract each other, to adjust the value of this first scale parameter.
18. the dynamic adjusting method of the basic time pulse signal of front end bus-bar according to claim 17 is characterized in that wherein said adjustment parameter is the preset parameter for fixed value.
19. the dynamic adjusting method of the basic time pulse signal of front end bus-bar according to claim 17, it is characterized in that it more includes a step, it provides the plural first scale parameter section and corresponding plural number is adjusted parameter, according to pairing this first scale parameter section of this first scale parameter that is used to produce this basic time pulse signal at present, export pairing being somebody's turn to do and adjust parameter, to carry out addition with present this first scale parameter or to subtract each other, to adjust the value of this first scale parameter.
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