CN101526841A - Computer system and power saving method - Google Patents
Computer system and power saving method Download PDFInfo
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- CN101526841A CN101526841A CN200810081724A CN200810081724A CN101526841A CN 101526841 A CN101526841 A CN 101526841A CN 200810081724 A CN200810081724 A CN 200810081724A CN 200810081724 A CN200810081724 A CN 200810081724A CN 101526841 A CN101526841 A CN 101526841A
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Abstract
The invention relates to a computer system, which comprises a system chip and a plurality of auxiliary devices. The system chip comprises a plurality of modules, each module is provided with a controlling unit, and each controlling unit receives an independent power supply and is independently started or closed through a general purpose input output port signal. The auxiliary devices are coupled with the controlling units through a connecting port or a connecting slot. When partial controlling units are not connected with the auxiliary devices, the controlling units which are not connected with the auxiliary devices are closed so as to reduce the power consumption of the system chip.
Description
Technical field
The present invention is relevant a kind of power save circuit, particularly relevant a kind of power save circuit that is applied to computer system.
Background technology
When traditional computer system boot-strap, all utility appliance of computer all can be aroused, and in other words, the corresponding control chip of all utility appliance of computer also all can be activated with in running order.
Yet, the user often can not use all computer utility appliance, or a certain segment length in the time user only use partly computer utility appliance, and computer utility appliance that these seldom use and corresponding control chip all are in the state of electric consumption always, and this can cause the traditional electrical brain system to have the problem that consumes the too much energy.
Though computer has six kinds of ACPI (Advanced Configuration and Power Interface) state at present, for example: S0, S1, S3, S4 and six kinds of states of S5.Yet having only state S0 is the state of computer system normal running, all the other S1 to S5 states, and computer all is in dormant state, though power saving, the user also can't normally use computer.
Summary of the invention
In view of this, the invention provides on the System on Chip/SoC that a kind of power-saving method is applied to a computer system, System on Chip/SoC comprises a plurality of control modules, and each control module has a general I/O port respectively, and each general I/O port correspondence is connected to one and detects coupling unit.Its method comprises: behind computer system boot-strap, detect a state of all general I/O ports, to judge whether detect coupling unit is connected to a utility appliance; When the detection coupling unit did not have the utility appliance of connection, System on Chip/SoC is closed did not have the control module that connects utility appliance; And make a Basic Input or Output System (BIOS) (BIOS) carry out initialization to the control module of not closing.
The present invention more provides a kind of computer system, and computer system comprises a plurality of detection coupling units and a System on Chip/SoC.Arbitrary detection coupling unit and corresponding utility appliance in conjunction with the time, produce one and detect binding signal.System on Chip/SoC has a power-supply unit and a plurality of module that at least one power level is provided.Each module has a control module respectively, each control module has the arbitrary detection coupling unit of the corresponding connection of a general I/O port, when arbitrary general I/O port is received the detection binding signal, power-supply unit supply particular power source level is given general I/O port corresponding control unit, when arbitrary general I/O port was not received the detection binding signal, power-supply unit stop supplies particular power source level was given general I/O port corresponding control unit.
Description of drawings
Fig. 1 shows the South Bridge chip synoptic diagram of computer system according to an embodiment of the invention.
Fig. 2 shows the process flow diagram of power-saving method according to another embodiment of the present invention.
Embodiment
For above and other objects of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, and conjunction with figs. is described in detail below:
Computer system can adopt south bridge system chip and external control unit chip and computer utility appliance to transmit usually and receive data; in recent years because circuit design trend integration and densification; South Bridge chip begins to integrate the function of some external control unit chips; thereby put these external control unit into South Bridge chip, so the South Bridge chip function is also just more and more stronger.
The present invention is with the South Bridge chip modularization, one South Bridge chip has a plurality of modules (control module), each module connects a general I/O port to receive a general I/O port signal and an independent current source, and whether each module basis general I/O port signal deciding separately wants each control module of initialization, if want the initialization control module, the control module of promptly indicating to open, otherwise if initialization control module not, the closing control of promptly indicating unit.
Fig. 1 shows South Bridge chip 100 synoptic diagram of computer system according to an embodiment of the invention.South Bridge chip 100 has a plurality of modules, each module has a control module separately, each control module has a general I/O port respectively, general I/O port correspondence is connected to one and detects coupling unit, connection slot (Slot) 171 as shown in Figure 1, or available connectivity port (Connector) reaches.
As shown in Figure 1, South Bridge chip 100 comprises sound effect control unit (Audio Controller) 110, IDE control module 120, PCI control module 130, PCIE control module 140, SATA control module 150 and USB control module 160.Sound effect control unit 110 receives general I/O port signal GPIO1 and power supply Vdd1, IDE control module 120 receives general I/O port signal GPIO2 and power supply Vdd2, PCI control module 130 receives general I/O port signal GPIO3 and power supply Vdd3, PCIE control module 140 receives general I/O port signal GPIO4 and power supply Vdd4, SATA control module 150 receives general I/O port signal GPIO5 and power supply Vdd5, USB control module 160 receives general I/O port signal GPIO6 and power supply Vdd6.
In addition, South Bridge chip 100 also has a power-supply unit 170 provides at least a power supply, uses the same level power supply generally speaking, provides a plurality of power levels for the difference different control units with different Vdd1～Vdd6 at this.When arbitrary computer utility appliance is connected to computer system, for example sound card 172 will be connected to sound effect control unit 110, sound card 172 wherein two pin positions connects, cooperation is corresponding to detecting a connectivity port (Connector) or connection slot (Slot) 171 ground connection on the coupling unit, another is connected to the design of the general I/O port of sound effect control unit 110, can be connected to computer system in arbitrary computer utility appliance, corresponding arbitrary general I/O port is received the detection binding signal, be that the I/O port signal is when being electronegative potential, power-supply unit 170 also can be supplied the particular power source level and give general I/O port corresponding control unit, when arbitrary general I/O port is not received the detection binding signal (when just the I/O port signal is noble potential), power-supply unit 170 stop supplies particular power source level are given general I/O port corresponding control unit.
According to one embodiment of the invention, sound effect control unit 110 is opened or is closed according to general I/O port signal GPIO1 decision, when general I/O port signal GPIO1 is electronegative potential, sound effect control unit 110 is opened to receive power supply Vdd1, when general I/O port signal GPIO1 is noble potential, closes sound effect control unit 110 and close.Sound effect control unit 110 can detect sound card 172 by connectivity port (Connector) or connection slot (Slot) (coupling unit or detection coupling unit 171) and whether be connected to computer system, for example: when sound card 172 is connected to the connection slot 171 of computer system, the general I/O port GPIO[1 that connects slot 171] can couple with earthing power supply GND, therefore general I/O port signal GPIO1 is an electronegative potential, when sound card is not connected to the connection slot 171 of computer system, general I/O port GPIO[1] general I/O port signal GPIO1 be noble potential.In like manner, IDE control module 120, PCI control module 130, PCIE control module 140, SATA control module 150 and USB control module 160 also can be opened or close according to general I/O port signal deciding.
Fig. 2 shows the process flow diagram of power-saving method according to another embodiment of the present invention.Please also refer to Fig. 1, when computer system boot-strap, the current potential that detects all general I/O port signals connects utility appliance (step S210) to judge whether corresponding control module has by coupling unit.For example: the current potential that detects general I/O port GPIO1～6, when the part control module does not have by coupling unit connection utility appliance, corresponding general I/O port GPIO1～6 are noble potential, then close nothing and connect the corresponding control module of utility appliance to reduce System on Chip/SoC electrical source consumption (step S220).Wherein closing does not have the corresponding control module that connects utility appliance, is to send a power level by the power-supply unit 170 of general I/O port shutdown system chip 100 to give corresponding control unit.When the current potential of all general I/O port GPIO1～GPIO6 is electronegative potential, leap to step S230.According to one embodiment of the invention, have only a sound card to be connected to computer system, do not have other utility appliance and be connected to corresponding control module, so having only general I/O port signal GPIO1 is electronegative potential, other general I/O port signal GPIO2～GPIO6 is a noble potential, because general I/O port signal GPIO1 is an electronegative potential, sound effect control unit 110 is unlocked, and other general I/O port signal GPIO2～GPIO6 is a noble potential, so IDE control module 120, PCI control module 130, PCIE control module 140, SATA control module 150 and USB control module 160 can be closed, next, Basic Input or Output System (BIOS) (BIOS) can be carried out initialization to the control module of not closing, and starts an operating system (step S230) afterwards.
According to another embodiment of the present invention, after launch computer operating system, whether lasting detection has another utility appliance to connect a certain control module (step S240), there is a utility appliance to be connected to a control module to other if go into input by coupling unit according to general output, then general I/O port is opened corresponding control module (step S250), after opening control module, Basic Input or Output System (BIOS) (BIOS) then notifying operation system assignment system resource is given corresponding control module (step S260).
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can making all changes that is equal to or replacement, so protection scope of the present invention is when looking being as the criterion that claims define.
Claims (12)
1. a power-saving method is applied on the System on Chip/SoC of computer system, and described System on Chip/SoC comprises a plurality of control modules, described these control modules have general I/O port respectively, described general I/O port correspondence is connected to the detection coupling unit, it is characterized in that described power-saving method comprises:
Behind described computer system boot-strap, detect the state of all general I/O ports, whether be connected to utility appliance to judge described detection coupling unit;
When described detection coupling unit did not have the described utility appliance of connection, described System on Chip/SoC is closed did not have the described control module that connects described utility appliance; And
Make Basic Input or Output System (BIOS) carry out initialization to the control module of not closing.
2. power-saving method according to claim 1 is characterized in that, when the described state that wherein detects described general I/O port is noble potential, judges that described control module does not have the described utility appliance of connection.
3. power-saving method according to claim 1 is characterized in that, wherein said Basic Input or Output System (BIOS) starts the operating system after the control module of not closing is carried out initialization.
4. power-saving method according to claim 3 is characterized in that, after starting described operating system, when combining with arbitrary utility appliance as if the arbitrary detection coupling unit of detection, opens the described control module of described detection coupling unit correspondence.
5. power-saving method according to claim 4 is characterized in that, wherein after opening described control module, described Basic Input or Output System (BIOS) notifies described operating system distributing system resource to give described control module.
6. power-saving method according to claim 1, it is characterized in that, wherein closing does not have the described control module that connects described utility appliance, is to send power level by the power-supply unit that described general I/O port is closed described System on Chip/SoC to give described control module.
7. a computer system connects a plurality of utility appliance, it is characterized in that, comprising:
A plurality of detection coupling units, arbitrary detection coupling unit and described these utility appliance one corresponding in conjunction with the time, produce and detect binding signal; And
System on Chip/SoC, have power-supply unit and a plurality of module that at least one power level is provided, described these modules have control module respectively, each control module has general I/O port, the arbitrary detection coupling unit of corresponding connection, when arbitrary general I/O port is received described detection binding signal, described power-supply unit is supplied the described control module that described power level is given described general I/O port correspondence, when arbitrary general I/O port was not received described detection binding signal, the described power level of described power-supply unit stop supplies was given the described control module of described general I/O port correspondence.
8. computer system according to claim 7 is characterized in that, it is a plurality of connectivity ports that wherein said these detect coupling unit.
9. computer system according to claim 7 is characterized in that, it is a plurality of slots that wherein said these detect coupling unit.
10. computer system according to claim 7 is characterized in that, it is that at least one connectivity port and at least one slot constitute that wherein said these detect coupling unit.
11. computer system according to claim 7 is characterized in that, wherein said detection binding signal is the ground voltage that is provided by described utility appliance.
12. a System on Chip/SoC connects at least one detection coupling unit, when described detection coupling unit combined with utility appliance, described detection coupling unit produced and detects binding signal, it is characterized in that described System on Chip/SoC comprises:
Power-supply unit provides at least one power level; And
A plurality of modules, has control module respectively, each control module has general I/O port, the arbitrary detection coupling unit of corresponding connection, when arbitrary general I/O port is received described detection binding signal, described power-supply unit is supplied the described control module that described power level is given described general I/O port correspondence, when arbitrary general I/O port was not received described detection binding signal, the described power level of described power-supply unit stop supplies was given the described control module of described general I/O port correspondence.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100817248A CN101526841B (en) | 2008-03-06 | 2008-03-06 | Computer system and power saving method |
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| CN2008100817248A CN101526841B (en) | 2008-03-06 | 2008-03-06 | Computer system and power saving method |
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| CN101526841A true CN101526841A (en) | 2009-09-09 |
| CN101526841B CN101526841B (en) | 2012-11-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314212A (en) * | 2010-07-09 | 2012-01-11 | 联想(北京)有限公司 | Control method, control device and terminal |
| CN102981588A (en) * | 2011-09-07 | 2013-03-20 | 纬创资通股份有限公司 | System and method capable of starting up through universal sequence bus device |
| CN102053685B (en) * | 2009-10-28 | 2013-04-03 | 纬创资通股份有限公司 | Portable electronic device and power management method |
| CN103970250A (en) * | 2013-01-28 | 2014-08-06 | 鸿富锦精密工业（深圳）有限公司 | Detection method and device for PCI (Programmable Communication Interface) slot connecting equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6460143B1 (en) * | 1999-05-13 | 2002-10-01 | Apple Computer, Inc. | Apparatus and method for awakening bus circuitry from a low power state |
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2008
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053685B (en) * | 2009-10-28 | 2013-04-03 | 纬创资通股份有限公司 | Portable electronic device and power management method |
| CN102314212A (en) * | 2010-07-09 | 2012-01-11 | 联想(北京)有限公司 | Control method, control device and terminal |
| CN102981588A (en) * | 2011-09-07 | 2013-03-20 | 纬创资通股份有限公司 | System and method capable of starting up through universal sequence bus device |
| CN102981588B (en) * | 2011-09-07 | 2015-03-18 | 纬创资通股份有限公司 | System and method capable of starting up through universal sequence bus device |
| CN103970250A (en) * | 2013-01-28 | 2014-08-06 | 鸿富锦精密工业（深圳）有限公司 | Detection method and device for PCI (Programmable Communication Interface) slot connecting equipment |
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| Publication number | Publication date |
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| CN101526841B (en) | 2012-11-14 |
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