CN103369643B - The method and apparatus that mobile terminal reduces system power dissipation - Google Patents
The method and apparatus that mobile terminal reduces system power dissipation Download PDFInfo
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- CN103369643B CN103369643B CN201210102742.6A CN201210102742A CN103369643B CN 103369643 B CN103369643 B CN 103369643B CN 201210102742 A CN201210102742 A CN 201210102742A CN 103369643 B CN103369643 B CN 103369643B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of method that mobile terminal reduces system power dissipation, including：Whether measurement processor is in standby mode, in this way, then sends self-refresh command signal to Memory Controller Hub, to control Memory Controller Hub to enter self-refresh mode, and closes the mode clock of the Memory Controller Hub；Receive the wakeup interrupt signal transmitted by outside, open the mode clock of the Memory Controller Hub, control the Memory Controller Hub to exit self-refresh mode, and the wakeup interrupt signal is sent to processor, device for processing exits standby mode according to the wakeup interrupt signal.Present invention also offers corresponding device.The method that a kind of mobile terminal provided by the present invention reduces system power dissipation, the signal provided by the WFI patterns of processor, control Memory Controller Hub enters battery saving mode, the power consumption of improvement system that can be obvious under the scene such as standby, call and online, and the time that user is used battery can be extended.
Description
Technical field
The present invention relates to communication technical field, and being related specifically to a kind of mobile terminal reduces the method and dress of system power dissipation
Put.
Background technology
As becoming increasingly popular for the mobile terminals such as mobile phone has begun to increasing weight with its functional enhancing, user
The time length used depending on mobile terminal.The mobile terminals such as mobile phone currently used in the market, substantially all can use as ARM9,
ARM11 or the ARM of higher performance (Advanced RISC Machines) processor, and arm processor has a kind of WFI in itself
(Wait For Interrupt) pattern, when the power consumption demand for the software that the pattern can be currently running in systems is relatively low, by ARM
The clock of processor is closed, so as to reach the purpose for reducing system power dissipation.So, when mobile terminal is either in standby, call
And online etc. is each under scene, all can be at any time enter WFI patterns, particularly when in the business such as call, ARM processing
The time that device enters WFI patterns can be longer.Therefore, because power saving effect caused by the WFI patterns of arm processor in itself, just
The power consumption of system can largely be reduced.
But during the actual research and development to mobile terminals such as mobile phones, if directly provided using arm processor
WFI patterns reduce system power dissipation, and power saving effect to mobile terminal system is not it is obvious that this reduction system power dissipation
Method is in standby and call in mobile terminal, and the degree for the electric current that can be saved is still smaller.
The content of the invention
The main object of the present invention passes through processor to provide the method and apparatus that a kind of mobile terminal reduces system power dissipation
The signal that provides of WFI patterns, control Memory Controller Hub enters battery saving mode, improvement system that can be obvious it is standby,
Power consumption under the scene such as call and online, and extend the time that user is used battery.
The present invention provides a kind of method that mobile terminal reduces system power dissipation, including：
Whether measurement processor is in standby mode, in this way, then self-refresh command signal is sent to Memory Controller Hub, with control
Memory Controller Hub processed enters self-refresh mode, and closes the mode clock of the Memory Controller Hub；
The wakeup interrupt signal transmitted by outside is received, opens the mode clock of the Memory Controller Hub, is controlled in described
Memory controller exits self-refresh mode, and the wakeup interrupt signal is sent to processor, and device for processing is called out according to
Awake interrupt signal exits standby mode；
After the transmission self-refresh command signal to Memory Controller Hub is performed, in addition to：
Shield the wakeup interrupt signal of all outsides, and wait Memory Controller Hub send according to the self-refresh command signal
The self-refresh answer signal of feedback, the self-refresh answer signal is showing that Memory Controller Hub has been enter into self-refresh mode；
After receiving the self-refresh answer signal, cancel the shielding to all external wake interrupt signals, it is outer to wait
Wakeup interrupt signal transmitted by portion.
Preferably, whether the measurement processor is in standby mode, in this way, then sends self-refresh to Memory Controller Hub and refers to
Signal is made, to control Memory Controller Hub to enter self-refresh mode, and the mode clock for closing the Memory Controller Hub includes：
Transmitted by measurement processor to show that it is in whether the standby signal of standby mode is high level, in this way,
Then decision processor is in standby mode；
Self-refresh command signal is sent to Memory Controller Hub, to control Memory Controller Hub to enter self-refresh mode, and inside
After memory controller enters self-refresh mode, the module clock of Memory Controller Hub is closed.
Preferably, the wakeup interrupt signal transmitted by the reception outside, the mode clock of the Memory Controller Hub is opened,
Control the Memory Controller Hub to exit self-refresh mode, and the wakeup interrupt signal is sent to processor included：
After receiving the wakeup interrupt signal transmitted by outside, the module clock of the Memory Controller Hub is opened, and inwardly
Memory controller is sent to control it to exit the exit instruction signal of self-refresh mode；
Receive the Memory Controller Hub and exit answer signal according to what the exit instruction signal fed back, it is described to exit response
Signal is showing that the Memory Controller Hub has dropped out self-refresh mode；The wakeup interrupt signal is sent to processor.
Preferably, answer signal is exited according to what the exit instruction signal fed back in the execution reception Memory Controller Hub
Afterwards, in addition to：
The answer signal that exits that the Memory Controller Hub is fed back is carried out and operated with the wakeup interrupt signal, and will
It is described to exit answer signal and the wakeup interrupt signal while send to processor.
The present invention, which also provides a kind of mobile terminal, reduces the device of system power dissipation, including：
First control module, whether standby mode is in for measurement processor, in this way, is then sent certainly to Memory Controller Hub
Refreshing instruction signal, to control Memory Controller Hub to enter self-refresh mode, and close the mode clock of the Memory Controller Hub；
Second control module, for receiving the wakeup interrupt signal transmitted by outside, open the mould of the Memory Controller Hub
Formula clock, control the Memory Controller Hub to exit self-refresh mode, and the wakeup interrupt signal is sent to processor, for
Processor exits standby mode according to the wakeup interrupt signal；
Shroud module, for shielding the wakeup interrupt signal of all outsides, and wait described in the evidence of Memory Controller Hub transmission
The self-refresh answer signal of self-refresh command signal feedback, the self-refresh answer signal is showing that Memory Controller Hub has been enter into
Self-refresh mode；
Module is waited, after receiving the self-refresh answer signal, is cancelled to all external wake interrupt signals
Shielding, to wait the wakeup interrupt signal transmitted by outside.
Preferably, first control module includes：
Detection unit, for show transmitted by measurement processor its be in the standby signal of standby mode whether be
High level, in this way, then decision processor is in standby mode；
First transmitting element, for sending self-refresh command signal to Memory Controller Hub, to control Memory Controller Hub to enter
Self-refresh mode, and after Memory Controller Hub enters self-refresh mode, close the module clock of Memory Controller Hub.
Preferably, second control module includes：
Second transmitting element, after receiving the wakeup interrupt signal transmitted by outside, open the Memory Controller Hub
Module clock, and to Memory Controller Hub transmission controlling it to exit the exit instruction signal of self-refresh mode；
3rd transmitting element, response is exited according to what the exit instruction signal fed back for receiving the Memory Controller Hub
Signal, it is described to exit answer signal to show that the Memory Controller Hub has dropped out self-refresh mode；The wake-up interrupts are believed
Number send to processor.
Preferably, second control module also includes：
Operating unit, by the Memory Controller Hub fed back exit answer signal and the wakeup interrupt signal carry out with
Operation, and the transmission simultaneously of answer signal and the wakeup interrupt signal is exited to processor by described.
The method that a kind of mobile terminal provided by the present invention reduces system power dissipation, by mobile terminal system, if
One low power consumption control unit LPCU controlled by top layer of meter, and by arm processor after WFI patterns are entered
STANDBYWFI signals are incorporated into LPCU, when LPCU detects that arm processor is in standby mode, just to Memory Controller Hub
Sending control, it enters the self-refresh command signal of self-refresh mode, and closes the mode clock of Memory Controller Hub；Meanwhile pass through
Wakeup interrupt signal outside LPCU receptions, the mode clock of Memory Controller Hub is first opened, then controls Memory Controller Hub to exit
Self-refresh mode, and wakeup interrupt signal is sent to arm processor, so that arm processor is received after this signal from WFI
Exited in pattern, so that whole system exits standby mode, recover normal work.In this way, can be obvious
Power consumption of the improvement system in standby, call and online etc. under scene, and extend the time that user is used battery.
Brief description of the drawings
Fig. 1 is the schematic flow sheet for the embodiment of method one that mobile terminal of the present invention reduces system power dissipation；
Fig. 2 is that wakeup interrupt signal is shielded and cancelled in the embodiment of method one of mobile terminal of the present invention reduction system power dissipation
Schematic flow sheet；
Fig. 3 is to control Memory Controller Hub to enter in the embodiment of method one of mobile terminal of the present invention reduction system power dissipation to brush certainly
The schematic flow sheet of new model；
Fig. 4 is to control Memory Controller Hub to exit from brush in the embodiment of method one of mobile terminal of the present invention reduction system power dissipation
The schematic flow sheet of new model；
Fig. 5 is the schematic flow sheet for the another embodiment of method that mobile terminal of the present invention reduces system power dissipation；
Fig. 6 is the structural representation for the embodiment of device one that mobile terminal of the present invention reduces system power dissipation；
Fig. 7 be mobile terminal of the present invention reduce system power dissipation the embodiment of device one in shroud module structural representation；
Fig. 8 be mobile terminal of the present invention reduce system power dissipation the embodiment of device one in the first control module structural representation
Figure；
Fig. 9 be mobile terminal of the present invention reduce system power dissipation the embodiment of device one in the second control module structural representation
Figure；
Figure 10 is the structural representation for the another embodiment of device that mobile terminal of the present invention reduces system power dissipation.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 1, propose that mobile terminal of the present invention reduces the embodiment of method one of system power dissipation.This method includes：
Whether step S101, measurement processor are in standby mode, in this way, then send self-refresh command to Memory Controller Hub
Signal, to control Memory Controller Hub to enter self-refresh mode, and close the mode clock of Memory Controller Hub；
A kind of mobile terminal that the present embodiment is provided reduces the method for system power dissipation, the realization of this method, it is necessary first to
In mobile terminal system, one low power consumption control unit LPCU (Low Power Control controlled by top layer of design
Unit).Also, in the present embodiment, illustrated by taking the shifting end terminal using arm processor as an example.Arm processor is being entered
Enter the STANDBYWFI signals after WFI patterns to be incorporated into LPCU, and control Memory Controller Hub to enter self-refresh by LPCU
Pattern, so that whole system is in power down mode.
In the present embodiment, if arm processor enter standby mode after, can outwardly send a STANDBYWFI first
Signal, the STANDBYWFI signals are showing that arm processor now has enter into standby mode.And low power consumption control unit
LPCU will detect whether now arm processor is in standby mode according to this STANDBYWFI signal, such as detect ARM
Processor is in standby mode really, then a self-refresh command signal, self-refresh command letter can be sent to Memory Controller Hub
Number be used for control Memory Controller Hub to enter self-refresh mode；Also, to receive self-refresh command signal laggard when Memory Controller Hub
Enter to after self-refresh mode, also to control Memory Controller Hub to close the mode clock of Memory Controller Hub.In the present embodiment, internal memory control
The self-refresh mode of device processed is a kind of battery saving mode of its own, when Memory Controller Hub is in self-refresh mode, mobile terminal
Whole system just in low-power consumption work state.
Step S102, the wakeup interrupt signal transmitted by outside is received, open the mode clock of Memory Controller Hub, in control
Memory controller exits self-refresh mode, and wakeup interrupt signal is sent to processor, and device for processing is believed according to wake-up interrupts
Number exit standby mode.
When the state that the whole system of mobile terminal works all in low-power consumption, normally transported if desired for restoring it
Row state, then need one wakeup interrupt signal of outside transmission, and this wakeup interrupt signal is sent to interrupt control unit.
In the present embodiment, it is necessary first to control Memory Controller Hub to open the mode clock of Memory Controller Hub, then by transmitted by outside
Wakeup interrupt signal for waking up system is incorporated into low power consumption control unit LPCU, and controls Memory Controller Hub to move back by LPCU
Go out self-refresh mode, that is to say, that Memory Controller Hub is in normal mode of operation, rather than battery saving mode.Then, by wake-up
Break signal is sent to arm processor, for that after arm processor receives this signal, will be exited from WFI patterns, together
When by STANDBYWFI signals down for low level, at this moment, the clock of arm processor will normal operation, and in system
The software of operation can also start normal operation.In this manner it is possible to by low power consumption control unit LPCU, exit whole system and treat
Machine pattern, so as to recover normal work.
The method that a kind of mobile terminal provided by the present invention reduces system power dissipation, by mobile terminal system, if
One low power consumption control unit LPCU controlled by top layer of meter, and by arm processor after WFI patterns are entered
STANDBYWFI signals are incorporated into LPCU, when LPCU detects that arm processor is in standby mode, just to Memory Controller Hub
Sending control, it enters the self-refresh command signal of self-refresh mode, and closes the mode clock of Memory Controller Hub；Meanwhile pass through
Wakeup interrupt signal outside LPCU receptions, the mode clock of Memory Controller Hub is first opened, then controls Memory Controller Hub to exit
Self-refresh mode, and wakeup interrupt signal is sent to arm processor, so that arm processor is received after this signal from WFI
Exited in pattern, so that whole system exits standby mode, recover normal work.In this way, can be obvious
Power consumption of the improvement system in standby, call and online etc. under scene, and extend the time that user is used battery.
Reference picture 2, in the above-described embodiments, after step S101 is performed, in addition to：
Step S103, shields the wakeup interrupt signal of all outsides, and waits referring to according to self-refresh for Memory Controller Hub transmission
The self-refresh answer signal for making signal feed back, self-refresh answer signal is showing that Memory Controller Hub has been enter into self-refresh mode；
When sending control to Memory Controller Hub by low power consumption control unit LPCU, it enters the self-refresh of self-refresh mode
After command signal, just start to shield the wakeup interrupt signal of all outsides.And when Memory Controller Hub receives self-refresh
Command signal and after entering self-refresh mode according to the command signal, can feed back one to LPCU and be based on self-refresh command signal
Self-refresh answer signal, for showing that Memory Controller Hub has been enter into self-refresh mode.And LPCU is shielding all outsides
After wakeup interrupt signal, the self-refresh answer signal of Memory Controller Hub transmission will be started waiting for.
Step S104, after receiving self-refresh answer signal, cancel the shielding to all external wake interrupt signals, with etc.
Treat the wakeup interrupt signal transmitted by outside.
After LPCU receives the self-refresh answer signal from Memory Controller Hub, it will cancel in all external wakes
The shielding of break signal, it is therefore an objective to wait the wakeup interrupt signal transmitted by outside, so as to which standby mode can will be at any time
System waken up.
Reference picture 3, in the embodiment of method one that mobile terminal of the present invention reduces system power dissipation, step S101 is specifically wrapped
Include：
Step S1011, transmitted by measurement processor showing that it is in whether the standby signal of standby mode is high
Level, in this way, then decision processor is in standby mode；
In the present embodiment, if arm processor enter standby mode after, can outwardly send a STANDBYWFI first
Signal, the STANDBYWFI signals are showing that arm processor now has enter into standby mode.When low power consumption control unit
After LPCU receives the STANDBYWFI signals transmitted by arm processor, this STANDBYWFI signal will be detected,
Whether standby mode is according to this signal detection arm processor, the method for detection is to judge that this STANDBYWFI believes
Number whether it is high level, if it is, can be determined that now arm processor is in standby mode.
Step S1012, self-refresh command signal is sent to Memory Controller Hub, to control Memory Controller Hub to enter self-refresh mould
Formula, and after Memory Controller Hub enters self-refresh mode, close the module clock of Memory Controller Hub.
When judging that arm processor is in standby mode, low power consumption control unit LPCU first can be to Memory Controller Hub
A self-refresh command signal is sent, for controlling Memory Controller Hub to enter self-refresh mode.When Memory Controller Hub enters from brush
After new model, then the module clock of Memory Controller Hub is controlled to close.And now, the system of mobile terminal will be in low-power consumption
Working condition, thus can with reach reduce system power dissipation purpose.
Examined by the level for entering STANDBYWFI signals outwardly transmitted after standby mode to arm processor
Survey, so as to judge whether arm processor is in standby mode, after determined arm processor and be in standby mode, first inwardly
Memory controller sends one to control it to enter the self-refresh command signal of self-refresh mode, and enters certainly in Memory Controller Hub
After refresh mode, the module clock of Memory Controller Hub is controlled to close.So, just further ensuring mobile terminal can conveniently simultaneously
And whole system is entered holding state, so as to reach the purpose for reducing power consumption.
Reference picture 4, in the embodiment of method one that mobile terminal of the present invention reduces system power dissipation, step S102 is specifically wrapped
Include：
Step S1021, after receiving the wakeup interrupt signal transmitted by outside, the module clock of Memory Controller Hub is opened,
And to Memory Controller Hub transmission controlling it to exit the exit instruction signal of self-refresh mode；
When needing the system wake-up by mobile terminal to be at the state of normal operation, interruption is sent to by outside
The wakeup interrupt signal of controller will be introduced in low power consumption control unit LPCU.When LPCU receives wakeup interrupt signal
Afterwards, the module clock of Memory Controller Hub can be controlled to open first, then, one is sent to Memory Controller Hub by LPCU and exit finger
Signal is made, to control Memory Controller Hub to exit self-refresh mode, and recovers normal mode of operation.
Step S1022, receive Memory Controller Hub and exit answer signal according to what exit instruction signal fed back, exit response letter
Number showing that Memory Controller Hub has dropped out self-refresh mode；Wakeup interrupt signal is sent to processor.
When Memory Controller Hub receives the exit instruction signal transmitted by low power consumption control unit LPCU, will exit from brushing
New model, also, after Memory Controller Hub has exited self-refresh mode, equally can feed back one to LPCU according to exit instruction signal
Answer signal is exited, to show that Memory Controller Hub has logged out self-refresh mode.Sent out when LPCU receives Memory Controller Hub
After that send exits answer signal, wakeup interrupt signal received before will be sent to arm processor, for working as ARM
Processor exits WFI patterns according to this wakeup interrupt signal, so that the whole system of mobile terminal returns to normal work
State.
After the wakeup interrupt signal of outside is received, the module clock of Memory Controller Hub is controlled to open first, and to
Memory Controller Hub is sent to control Memory Controller Hub to exit the exit instruction signal of self-refresh mode.Then, receive and come from
Memory Controller Hub according to exit instruction signal fed back exit answer signal after, wakeup interrupt signal is sent to ARM processing
Device, so that it exits WFI patterns, so that whole system returns to normal working condition.This way it is secured that make movement
The system of terminal can be switched over rapidly under low-power consumption and normal condition, so as to be further ensured that obvious improvement
Power consumption of the system under the scene such as standby, call and online, and user can be extended to a certain extent battery is used
Time.
Reference picture 5, propose that mobile terminal of the present invention reduces the another embodiment of method of system power dissipation, performing step
After S1022, in addition to：
Step S1023, the answer signal that exits that Memory Controller Hub is fed back are carried out and operated with wakeup interrupt signal, and
It will move out answer signal and wakeup interrupt signal while send to processor.
In the present embodiment, it is desirable to after low power consumption control unit LPCU receives the wakeup interrupt signal of outside transmission,
Also to judge whether Memory Controller Hub is in normal mode of operation, and ought only meet that Memory Controller Hub is in normal work simultaneously
During pattern, wakeup interrupt signal can be just sent to arm processor.Therefore, the moving back according to transmitted by LPCU when Memory Controller Hub
Go out command signal and exited self-refresh mode, and one is fed back to LPCU to show Memory control according to exit instruction signal
Device is had logged out after self-refresh mode exits answer signal, when LPCU, which receives this, exits answer signal, you can judge this
When Memory Controller Hub be in normal mode of operation.
After determined Memory Controller Hub and be in normal mode of operation, this can be exited answer signal by LPCU first
Carry out and operate with wakeup interrupt signal received before, i.e., merge the two signals, then by wake-up interrupts
Signal is with exiting answer signal while being sent to arm processor, after arm processor receives the signal of the condition of satisfaction, Bian Huicong
Exited in WFI patterns, while by STANDBYWFI signals down for low level, at this moment, the clock of arm processor will be transported normally
OK, and in system the software being currently running can also start normal operation.
Wakeup interrupt signal transmitted by outside is incorporated into low power consumption control unit LPCU, and in receiving as LPCU
Being believed according to what exit instruction signal fed back to show that it has dropped out the response of exiting of self-refresh mode transmitted by memory controller
Number, and then determined after now Memory Controller Hub has logged out self-refresh mode.When both these conditions are met, LPCU is passed through
It will move out answer signal to carry out and operate with wakeup interrupt signal, then send simultaneously to arm processor, for arm processor
Exited from WFI patterns, while the software for making to be currently running in system can also start normal operation.So, can be more to enter one
Step ensures the obvious power consumption for improving system under the scene such as standby, call and online, and can prolong to a certain extent
The time that long user is used battery.
Reference picture 6, propose that mobile terminal of the present invention reduces the embodiment of device one of system power dissipation.The device includes：
First control module 10, whether standby mode is in for measurement processor, in this way, is then sent to Memory Controller Hub
Self-refresh command signal, to control Memory Controller Hub to enter self-refresh mode, and close the mode clock of Memory Controller Hub；
Second control module 20, for receiving the wakeup interrupt signal transmitted by outside, open the pattern of Memory Controller Hub
Clock, control Memory Controller Hub exit self-refresh mode, and wakeup interrupt signal sent to processor, device for processing according to
Wakeup interrupt signal exits standby mode.
A kind of mobile terminal that the present embodiment is provided reduces the method for system power dissipation, the realization of this method, it is necessary first to
In mobile terminal system, one low power consumption control unit LPCU (Low Power Control controlled by top layer of design
Unit).Also, in the present embodiment, illustrated by taking the shifting end terminal using arm processor as an example.Arm processor is being entered
Enter the STANDBYWFI signals after WFI patterns to be incorporated into LPCU, and control Memory Controller Hub to enter self-refresh by LPCU
Pattern, so that whole system is in power down mode.
In the present embodiment, if arm processor enter standby mode after, can outwardly send a STANDBYWFI first
Signal, the STANDBYWFI signals are showing that arm processor now has enter into standby mode.And low power consumption control unit
LPCU will detect whether now arm processor is in standby mode according to this STANDBYWFI signal, such as detect ARM
Processor is in standby mode really, then the first control module 10 can send a self-refresh command signal to Memory Controller Hub,
The self-refresh command signal is used to control Memory Controller Hub to enter self-refresh mode；Also, when Memory Controller Hub is received from brush
After entering self-refresh mode after new command signal, Memory Controller Hub is also controlled to close the mode clock of Memory Controller Hub.This
In embodiment, the self-refresh mode of Memory Controller Hub is a kind of battery saving mode of its own, when Memory Controller Hub is in self-refresh
During pattern, the whole system of mobile terminal is just in the state of low-power consumption work.
When the state that the whole system of mobile terminal works all in low-power consumption, normally transported if desired for restoring it
Row state, then need one wakeup interrupt signal of outside transmission, and this wakeup interrupt signal is sent to interrupt control unit.
In the present embodiment, it is necessary first to control Memory Controller Hub to open the mode clock of Memory Controller Hub, then by transmitted by outside
Wakeup interrupt signal for waking up system is incorporated into low power consumption control unit LPCU, and in being controlled by the second control module 20
Memory controller exits self-refresh mode, that is to say, that Memory Controller Hub is in normal mode of operation, rather than battery saving mode.So
Afterwards, wakeup interrupt signal is sent to arm processor, will be from WFI moulds for after arm processor receives this signal
Exited in formula, while by STANDBYWFI signals down for low level, at this moment, the clock of arm processor will normal operation, and
The software being currently running in system can also start normal operation.In this manner it is possible to by low power consumption control unit LPCU, make whole
System exits standby mode, so as to recover normal work.
A kind of mobile terminal provided by the present invention reduces the device of system power dissipation, by mobile terminal system, if
One low power consumption control unit LPCU controlled by top layer of meter, and by arm processor after WFI patterns are entered
STANDBYWFI signals are incorporated into LPCU, when LPCU detects that arm processor is in standby mode, just to Memory Controller Hub
Sending control, it enters the self-refresh command signal of self-refresh mode, and closes the mode clock of Memory Controller Hub；Meanwhile pass through
Wakeup interrupt signal outside LPCU receptions, the mode clock of Memory Controller Hub is first opened, then controls Memory Controller Hub to exit
Self-refresh mode, and wakeup interrupt signal is sent to arm processor, so that arm processor is received after this signal from WFI
Exited in pattern, so that whole system exits standby mode, recover normal work.In this way, can be obvious
Power consumption of the improvement system in standby, call and online etc. under scene, and extend the time that user is used battery.
Reference picture 7, in the above-described embodiments, the device that mobile terminal reduces system power dissipation also include：
Shroud module 30, for shielding the wakeup interrupt signal of all outsides, and wait the evidence of Memory Controller Hub transmission certainly
The self-refresh answer signal of refreshing instruction signal feedback, self-refresh answer signal is showing that Memory Controller Hub has been enter into self-refresh
Pattern；
Module 40 is waited, after receiving self-refresh answer signal, cancels the screen to all external wake interrupt signals
Cover, to wait the wakeup interrupt signal transmitted by outside.
When sending control to Memory Controller Hub by low power consumption control unit LPCU, it enters the self-refresh of self-refresh mode
After command signal, shroud module 30 just starts to shield the wakeup interrupt signal of all outsides.And when Memory Controller Hub connects
After receiving self-refresh command signal and entering self-refresh mode according to the command signal, one can be fed back to LPCU and is based on from brush
The self-refresh answer signal of new command signal, for showing that Memory Controller Hub has been enter into self-refresh mode.And LPCU is being shielded
After the wakeup interrupt signal of all outsides, the self-refresh answer signal of Memory Controller Hub transmission will be started waiting for.
After LPCU receives the self-refresh answer signal from Memory Controller Hub, module 40 is waited to cancel to all
The shielding of external wake interrupt signal, it is therefore an objective to wait the wakeup interrupt signal transmitted by outside, will to locate at any time
Waken up in the system of standby mode.
Reference picture 8, in the embodiment of device one that mobile terminal of the present invention reduces system power dissipation, the first control module 10 is wrapped
Include：
Detection unit 11, for showing whether it is in the standby signal of standby mode transmitted by measurement processor
For high level, in this way, then decision processor is in standby mode；
First transmitting element 12, for sending self-refresh command signal to Memory Controller Hub, to control Memory Controller Hub to enter
Enter self-refresh mode, and after Memory Controller Hub enters self-refresh mode, close the module clock of Memory Controller Hub.
In the present embodiment, if arm processor enter standby mode after, can outwardly send a STANDBYWFI first
Signal, the STANDBYWFI signals are showing that arm processor now has enter into standby mode.When low power consumption control unit
After LPCU receives the STANDBYWFI signals transmitted by arm processor, detection unit 11 will be believed this STANDBYWFI
Number detected, i.e., whether standby mode is according to this signal detection arm processor, the method for detection is to judge this
Whether STANDBYWFI signals are high level, if it is, can be determined that now arm processor is in standby mode.
When judging that arm processor is in standby mode, low power consumption control unit LPCU first can be sent by first
The Memory Controller Hub of unit 12 sends a self-refresh command signal, for controlling Memory Controller Hub to enter self-refresh mode.When interior
After memory controller enters self-refresh mode, then the module clock of Memory Controller Hub is controlled to close.And now, the system of mobile terminal
Will be in low-power consumption working condition, thus can with reach reduce system power dissipation purpose.
Examined by the level for entering STANDBYWFI signals outwardly transmitted after standby mode to arm processor
Survey, so as to judge whether arm processor is in standby mode, after determined arm processor and be in standby mode, first inwardly
Memory controller sends one to control it to enter the self-refresh command signal of self-refresh mode, and enters certainly in Memory Controller Hub
After refresh mode, the module clock of Memory Controller Hub is controlled to close.So, just further ensuring mobile terminal can conveniently simultaneously
And whole system is entered holding state, so as to reach the purpose for reducing power consumption.
Reference picture 9, in the embodiment of device one that mobile terminal of the present invention reduces system power dissipation, the second control module 20 is wrapped
Include：
Second transmitting element 21, after receiving the wakeup interrupt signal transmitted by outside, opens Memory Controller Hub
Module clock, and to Memory Controller Hub transmission controlling it to exit the exit instruction signal of self-refresh mode；
3rd transmitting element 22, response letter is exited according to what the exit instruction signal fed back for receiving Memory Controller Hub
Number, answer signal is exited to show that Memory Controller Hub has dropped out self-refresh mode；Wakeup interrupt signal is sent to processor.
When needing the system wake-up by mobile terminal to be at the state of normal operation, interruption is sent to by outside
The wakeup interrupt signal of controller will be introduced in low power consumption control unit LPCU.When LPCU receives wakeup interrupt signal
Afterwards, the module clock of Memory Controller Hub can be controlled to open first, then, the second transmitting element 21 sends one to Memory Controller Hub
Exit instruction signal, to control Memory Controller Hub to exit self-refresh mode, and recover normal mode of operation.
When Memory Controller Hub receives the exit instruction signal transmitted by low power consumption control unit LPCU, will exit from brushing
New model, also, after Memory Controller Hub has exited self-refresh mode, equally can feed back one to LPCU according to exit instruction signal
Answer signal is exited, to show that Memory Controller Hub has logged out self-refresh mode.Sent out when LPCU receives Memory Controller Hub
After that send exits answer signal, the 3rd transmitting element 22 will send wakeup interrupt signal received before to ARM
Device is managed, for exiting WFI patterns according to this wakeup interrupt signal when arm processor, so that the whole system of mobile terminal
Return to the state of normal work.
After the wakeup interrupt signal of outside is received, the module clock of Memory Controller Hub is controlled to open first, and to
Memory Controller Hub is sent to control Memory Controller Hub to exit the exit instruction signal of self-refresh mode.Then, receive and come from
Memory Controller Hub according to exit instruction signal fed back exit answer signal after, wakeup interrupt signal is sent to ARM processing
Device, so that it exits WFI patterns, so that whole system returns to normal working condition.This way it is secured that make movement
The system of terminal can be switched over rapidly under low-power consumption and normal condition, so as to be further ensured that obvious improvement
Power consumption of the system under the scene such as standby, call and online, and user can be extended to a certain extent battery is used
Time.
Reference picture 10, propose that mobile terminal of the present invention reduces the another embodiment of device of system power dissipation, the second control module
20 also include：
Operating unit 23, the answer signal that exits that Memory Controller Hub is fed back are carried out and operated with wakeup interrupt signal,
And it will move out answer signal and wakeup interrupt signal while send to processor.
In the present embodiment, it is desirable to after low power consumption control unit LPCU receives the wakeup interrupt signal of outside transmission,
Also to judge whether Memory Controller Hub is in normal mode of operation, and ought only meet that Memory Controller Hub is in normal work simultaneously
During pattern, wakeup interrupt signal can be just sent to arm processor.Therefore, the moving back according to transmitted by LPCU when Memory Controller Hub
Go out command signal and exited self-refresh mode, and one is fed back to LPCU to show Memory control according to exit instruction signal
Device is had logged out after self-refresh mode exits answer signal, when LPCU, which receives this, exits answer signal, you can judge this
When Memory Controller Hub be in normal mode of operation.
After determined Memory Controller Hub and be in normal mode of operation, this can be exited answer signal by LPCU first
Carry out and operate with wakeup interrupt signal received before, i.e., merge the two signals, then by wake-up interrupts
Signal is with exiting answer signal while being sent to arm processor, after arm processor receives the signal of the condition of satisfaction, Bian Huicong
Exited in WFI patterns, while by STANDBYWFI signals down for low level, at this moment, the clock of arm processor will be transported normally
OK, and in system the software being currently running can also start normal operation.
Wakeup interrupt signal transmitted by outside is incorporated into low power consumption control unit LPCU, and in receiving as LPCU
Being believed according to what exit instruction signal fed back to show that it has dropped out the response of exiting of self-refresh mode transmitted by memory controller
Number, and then determined after now Memory Controller Hub has logged out self-refresh mode.When both these conditions are met, operating unit
23, which can will move out answer signal, carries out and operates with wakeup interrupt signal, then sends simultaneously to arm processor, at ARM
Reason device exits from WFI patterns, while the software for making to be currently running in system can also start normal operation.So, can be with more
Power consumption of the obvious improvement system under the scene such as standby, call and online is further ensured that, and can be to a certain degree
The upper time for extending user and using battery.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, every utilization
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be similarly included in the present invention scope of patent protection.
Claims (8)
1. a kind of method that mobile terminal reduces system power dissipation, it is characterised in that including：
Whether measurement processor is in standby mode, in this way, then self-refresh command signal is sent to Memory Controller Hub, with control
Memory controller enters self-refresh mode, and closes the mode clock of the Memory Controller Hub；
The wakeup interrupt signal transmitted by outside is received, the mode clock of the Memory Controller Hub is opened, controls the internal memory control
Device processed exits self-refresh mode, and the wakeup interrupt signal is sent to processor, and device for processing is according in the wake-up
Break signal exits standby mode；
After the transmission self-refresh command signal to Memory Controller Hub is performed, in addition to：
The wakeup interrupt signal of all outsides is shielded, and waits being fed back according to the self-refresh command signal for Memory Controller Hub transmission
Self-refresh answer signal, the self-refresh answer signal is showing that Memory Controller Hub has been enter into self-refresh mode；
After receiving the self-refresh answer signal, cancel the shielding to all external wake interrupt signals, to wait outside institute
The wakeup interrupt signal of transmission.
2. the method as described in claim 1, it is characterised in that whether the measurement processor is in standby mode, in this way, then
Self-refresh command signal is sent to Memory Controller Hub, to control Memory Controller Hub to enter self-refresh mode, and closes the internal memory
The mode clock of controller includes：
Transmitted by measurement processor to show that it is in whether the standby signal of standby mode is high level, in this way, then sentence
Determine processor and be in standby mode；
Self-refresh command signal is sent to Memory Controller Hub, to control Memory Controller Hub to enter self-refresh mode, and in internal memory control
After device processed enters self-refresh mode, the module clock of Memory Controller Hub is closed.
3. method as claimed in claim 2, it is characterised in that the wakeup interrupt signal transmitted by outside the reception, open
The mode clock of the Memory Controller Hub, control the Memory Controller Hub to exit self-refresh mode, and the wake-up interrupts are believed
Number sending to processor includes：
After receiving the wakeup interrupt signal transmitted by outside, the module clock of the Memory Controller Hub is opened, and to internal memory control
Device processed is sent to control it to exit the exit instruction signal of self-refresh mode；
Receive the Memory Controller Hub and exit answer signal according to what the exit instruction signal fed back, it is described to exit answer signal
To show that the Memory Controller Hub has dropped out self-refresh mode；The wakeup interrupt signal is sent to processor.
4. method as claimed in claim 3, it is characterised in that believed performing reception Memory Controller Hub according to the exit instruction
Number feedback exit after answer signal, in addition to：
The answer signal that exits that the Memory Controller Hub is fed back is carried out and operated with the wakeup interrupt signal, and by described in
Exit answer signal and the wakeup interrupt signal while send to processor.
5. a kind of mobile terminal reduces the device of system power dissipation, it is characterised in that including：
First control module, whether standby mode is in for measurement processor, in this way, then sends self-refresh to Memory Controller Hub
Command signal, to control Memory Controller Hub to enter self-refresh mode, and close the mode clock of the Memory Controller Hub；
Second control module, for receiving the wakeup interrupt signal transmitted by outside, when opening the pattern of the Memory Controller Hub
Clock, control the Memory Controller Hub to exit self-refresh mode, and the wakeup interrupt signal is sent to processor, it is for processing
Device exits standby mode according to the wakeup interrupt signal；
Shroud module, for shielding the wakeup interrupt signal of all outsides, and wait described in the evidence of Memory Controller Hub transmission from brush
The self-refresh answer signal of new command signal feedback, the self-refresh answer signal are brushed certainly to show that Memory Controller Hub has been enter into
New model；
Module is waited, after receiving the self-refresh answer signal, cancels the shielding to all external wake interrupt signals,
To wait the wakeup interrupt signal transmitted by outside.
6. device as claimed in claim 5, it is characterised in that first control module includes：
Detection unit, for showing that it is in whether the standby signal of standby mode is high electricity transmitted by measurement processor
Flat, in this way, then decision processor is in standby mode；
First transmitting element, for sending self-refresh command signal to Memory Controller Hub, to control Memory Controller Hub to enter from brush
New model, and after Memory Controller Hub enters self-refresh mode, close the module clock of Memory Controller Hub.
7. device as claimed in claim 6, it is characterised in that second control module includes：
Second transmitting element, after receiving the wakeup interrupt signal transmitted by outside, open the mould of the Memory Controller Hub
Block clock, and to Memory Controller Hub transmission controlling it to exit the exit instruction signal of self-refresh mode；
3rd transmitting element, response letter is exited according to what the exit instruction signal fed back for receiving the Memory Controller Hub
Number, it is described to exit answer signal to show that the Memory Controller Hub has dropped out self-refresh mode；By the wakeup interrupt signal
Send to processor.
8. device as claimed in claim 7, it is characterised in that second control module also includes：
Operating unit, the answer signal that exits that the Memory Controller Hub is fed back are carried out and grasped with the wakeup interrupt signal
Make, and the transmission simultaneously of answer signal and the wakeup interrupt signal is exited to processor by described.
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| US20150248741A1 (en) * | 2014-03-02 | 2015-09-03 | Qualcomm Incorporated | System and method for providing power-saving static image display refresh in a dram memory system |
| CN108040361B (en) * | 2017-12-06 | 2021-03-19 | 上海麦腾物联网技术有限公司 | Power management method of cross-platform Internet of things embedded system |
| EP3876383A1 (en) | 2020-03-02 | 2021-09-08 | Nokia Technologies Oy | Data communications |
| CN112559082B (en) * | 2020-12-23 | 2022-05-31 | 厦门紫光展锐科技有限公司 | Terminal device, NFC clock control method, NFC module and medium |
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| CN101321072A (en) * | 2008-07-21 | 2008-12-10 | 华为技术有限公司 | Network awakening method, device and equipment |
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| US6633987B2 (en) * | 2000-03-24 | 2003-10-14 | Intel Corporation | Method and apparatus to implement the ACPI(advanced configuration and power interface) C3 state in a RDRAM based system |
| US7369451B2 (en) * | 2005-10-31 | 2008-05-06 | Mosaid Technologies Incorporated | Dynamic random access memory device and method for self-refreshing memory cells |
| CN101059775B (en) * | 2006-04-19 | 2010-07-14 | 深圳市朗科科技股份有限公司 | Method for reducing portable apparatus power consumption |
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| CN101013340A (en) * | 2007-03-02 | 2007-08-08 | 中兴通讯股份有限公司 | Method for reducing power consumption of wireless network interface card |
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