CN100490273C - mobile terminal voltage dynamic management system and method - Google Patents
mobile terminal voltage dynamic management system and method Download PDFInfo
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- CN100490273C CN100490273C CNB2005101156234A CN200510115623A CN100490273C CN 100490273 C CN100490273 C CN 100490273C CN B2005101156234 A CNB2005101156234 A CN B2005101156234A CN 200510115623 A CN200510115623 A CN 200510115623A CN 100490273 C CN100490273 C CN 100490273C
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- voltage
- peripheral hardware
- portable terminal
- power management
- microprocessor
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The disclosed dynamic management system for mobile terminal IO voltage comprises: a MPU to set the IC when finding out external access port and boost IO voltage from the first value to a second value and recover IO voltage when removing the access, a cell to provide voltage for system, a power management IC, and an external interface for the peripheral.
Description
Technical field
The present invention relates to the dynamic management of portable terminal voltage, be specifically related to the system and method for the power supply of portable terminal according to the situation dynamic debugging system IO voltage that inserts USB or peripheral hardware.
Background technology
Along with the kind of portable terminal is more and more, as mobile phone, PDA, digital camera etc., its function not only can insert various wireless networks also from strength to strength, comprises GSM, 3G, Bluetooth, WirelessLan also possesses a lot of wired access functions such as USB, UART, and the interface such as the SDIO of expansion card and some peripheral hardwares.The interpolation of these functions has brought very big convenience, but the problem that the power consumption of mobile terminals that the access peripheral hardware causes increases also can not be ignored.
Some are linked into the peripheral hardware of portable terminal, or portable terminal to be linked into the IO voltage ratio of portable terminal of equipment requirements of other connections higher, as: the power line Vbus of USB2.0 communication protocol regulation is defined as 5V, therefore the supply power voltage of the USB transceiver (transceiver) in the portable terminal is usually all than higher, be generally 3.6V～3.0V, in order reliablely and stablely to work, usually require it to be set to intermediate level 3.3V, this voltage is higher than the normal power supply voltage 3.0V of present mobile terminal system, it is separately the power supply of USB transceiver or high voltage peripheral hardware, can improve the complexity of power system design, raise the cost; And the normal power supply voltage that improves portable terminal for the power supply of USB or high voltage peripheral hardware can improve the power consumption of system.As the high voltage that keeps IO voltage systematically always to keep 3.3V can make the system power dissipation of portable terminal increase, and adds the load of macrocell, reduces the power-on time of battery.
In order to solve this problem, need the dynamic system IO voltage of adjusting portable terminal, make when high-tension USB of needs or peripheral hardware access, the IO voltage of system is raise, and when this USB or peripheral hardware remove or disconnect, with the voltage under the IO voltage recovery normal condition of system, can avoid portable terminal to be in the state of high power consumption so always.
Technology contents
The object of the present invention is to provide a kind of portable terminal voltage dynamic management system and method, it can make IO voltage with the access of main frame USB or peripheral hardware and remove state and dynamic the adjustment.
A kind of portable terminal voltage dynamic management system of the present invention is used for according to the outer if access of main frame USB and removes state, dynamically changes the IO voltage of system, and it comprises: microprocessor; Battery is used for providing power supply to mobile terminal system; Power management IC is used to export the also operating voltage of managing mobile terminal system each several part, is connected with battery; External-connected port is used for inserting outer if be connected to main frame USB; Wherein, if main frame USB when inserting described external-connected port, the IO voltage that power management IC is provided is increased to second voltage from first voltage outside described microprocessor detects; Outside described microprocessor detects if main frame USB when described external-connected port removes, the IO voltage that power management IC is provided is low to moderate first voltage from second voltage drop.
Wherein, described first voltage is low-voltage, and described second voltage is high voltage.
Described microprocessor comprises an interrupt control unit, and it is used to respond the interrupt requests of being sent by microprocessor or power management IC, and judges outer if the insertion of main frame USB and removing according to the type of interrupt requests.
Described power management IC or microprocessor comprise a register, are used to store outer if the state information that main frame USB inserts and removes.
Described microprocessor comprises a timer, and this microprocessor is according to the timing of timer, and the buffer status of poll microprocessor or power management IC, and according to the state of register is judged outer if the insertion of main frame USB and removing.
Described power management IC comprises the charging circuit that is connected with power supply with external-connected port, and when being made as the active peripheral hardware of high voltage outside described, this charging circuit charges to battery.
Described register among the described power management IC be used for the IO voltage configuration information of storage system, and the IO of this system voltage configuration information can be revised by microprocessor.
A kind of portable terminal voltage dynamic management approach of the present invention, comprise: step 1: survey the outer of external-connected port if the insertion of main frame USB and removing, outside detecting if during the insertion of main frame USB, proceed to step 2, outside detecting if during the removing of main frame USB, proceed to step 3; Step 2 is increased to second voltage with the IO voltage of external-connected port from first voltage; Step 3 is low to moderate first voltage with the IO voltage of external-connected port from second voltage drop.
Wherein, in step 1, the microprocessor of portable terminal sends interrupt requests according to the state variation of external-connected port to interrupt control unit, and interrupt control unit is judged outer if main frame USB inserts and removes according to the type of interrupt requests.
Perhaps, in step 1, microprocessor reads the state information of the register of microprocessor every certain time interval, judge that this state information does not have not change, as the type that changes of the state information according to register of changing then, judge outer if main frame USB inserts and removes, this register contains the state information that peripheral hardware or main frame USB insert and remove.
Perhaps, in step 1, the power management IC of portable terminal sends interrupt requests according to the state variation of external-connected port to interrupt control unit; Interrupt control unit is judged outer if main frame USB inserts and removes according to the type of interrupt requests.
Perhaps, in step 1, microprocessor reads the buffer status information of power management IC every certain time interval, judge that this state information does not have not change, as the type that changes of the state information according to register of changing then, judge outer if main frame USB inserts and removes, this register contains the state information that peripheral hardware or main frame USB insert and remove.
Usefulness of the present invention is to make IO interface voltage dynamic change with the access situation of main frame USB or peripheral hardware of portable terminal, thereby the high voltage that had both made system meet main frame USB or peripheral hardware requires also to have reduced the load of system, can prolong the useful life of system and the stand-by time of battery.
Description of drawings
Fig. 1 is a portable terminal voltage dynamic management system structural representation of the present invention;
Fig. 2 is the structural representation of embodiments of the invention 1;
Fig. 3 is the structural representation of embodiments of the invention 2;
Fig. 4 is the structural representation of embodiments of the invention 3;
Fig. 5 is the structural representation of embodiments of the invention 4;
Among the figure
1 portable terminal, 2 microcontrollers
3 power management IC, 4 power supplys
5 external-connected port 6USB controllers
7 registers, 8 charging circuits
9 registers, 10 registers
11 interrupt control units, 13 timers
Embodiment
According to portable terminal voltage dynamic management system of the present invention, the IO voltage of system is low-voltage VL when normally using, when USB interface (hereinafter to be referred as USB) that inserts main frame or peripheral hardware, the IO voltage of system is brought up to high voltage VH, to meet the regulation of USB2.0 agreement, reach the requirement of carrying out data communication with USB or peripheral hardware to the VBUS signal; When the USB that inserts or peripheral hardware were extracted or removed, the IO voltage of system returned to normal voltage value low-voltage VL, to reduce the power of system, saves the electric energy of battery.
With USB is example, and the present invention is described in detail.According to shown in Figure 1, portable terminal voltage dynamic management system 1 of the present invention comprises microprocessing unit (MPU) 2, power management IC 3, battery 4 and external-connected port 5.Wherein, MPU 2 comprises a USB controller 6.Described MPU 2 is connected communication with power management IC 3 by bus.External-connected port 5 is accepted the USB that inserts, and respectively with microprocessing unit 2 on USB controller 6 be connected with power management IC 3.Battery 4 is connected with power management IC 3, provides power supply to mobile terminal system.
Wherein, power management IC 3 has the voltage dynamic management function of mobile terminal system, can provide operating voltage to each unit of system according to the requirement of system, as shown in Figure 1, it is connected by supply line with MPU and provides regulatable mobile terminal system IO voltage to MPU.Concrete, power management IC has a register 9, and this register 9 can be used for disposing the IO voltage of portable terminal, only needs MPU 2 to change the IO voltage Configuration Values of this register 9 by bus, can change the IO voltage to system's output.
In addition, described power management IC has the function of charging, and it comprises a charging circuit 8, when external-connected port 5 inserts the active peripheral hardware of high voltages (as PC time), this charging circuit can charge to battery 4, remedies mobile terminal system owing to insert peripheral hardware and improves the electric energy loss that system voltage causes.At this moment, the PC that is connected with portable terminal is regarded as a peripheral hardware of portable terminal.
Wherein, described external-connected port 5 can be a kind of USB connector, and this USB connector is slightly different with general USB connector, except that connecting line being arranged and USB controller 6 is connected, also has connecting line to be connected with power management IC 3.The outer high voltage USB peripheral hardware (as PC) that is made as persevering power supply that inserts when system, the charging circuit by connecting line power management IC charges to battery 4, remedies the electric energy loss of using battery in the portable terminal use.
The key of technical scheme of the present invention is in time to respond the USB peripheral hardware access of external-connected port 5 and remove this two incidents, and it is made dynamic response, promptly dynamically raises or the reduction IO of system voltage.In the USB system, can detect the connection status of mobile terminal system and external equipment (normally PC) by the VBUS signal: during access, thereby the connection of the VBUS signal of the VBUS signal level of external-connected port 5 and peripheral hardware makes the level of VBUS holding wire uprise level by low level; When removing, the level of VBUS holding wire is accordingly by the high level step-down.Simultaneously, the power management IC of mobile terminal system also can detect the connection status of USB peripheral hardware, and the USB peripheral hardware inserts or removes influence or changes the state information of the status register of power management IC.Therefore, both can also can respond the USB peripheral hardware by power management IC by the VBUS signal of USB controller inserts and removes.Wherein, VBUS is the power line from main frame.And for wherein any, can adopt poll again and interrupt two kinds of different response modes.Comprehensive, available four kinds of modes detect and respond the state variation that the USB peripheral hardware was inserted or removed to mobile interrupt system.Described USB peripheral hardware typically refers to the external equipment for portable terminal voltage dynamic management system, and has USB interface.
By as can be known aforementioned, when external-connected port 5 inserts the USB peripheral hardwares and USB peripheral hardware when removing, the USB controller 6 that is integrated on the MPU sends interrupt signal to interrupt control unit 11 respectively.MPU 2 is according to interrupt signal, carry out interrupt management, change the system IO voltage configuration of the register 9 of power management IC 3 by bus, thereby change the IO voltage of mobile terminal system, from normal voltage VL to high voltage VH or from high voltage VH to normal voltage VL.Wherein, registration two class IO port interruption subroutines in the system initialization process of portable terminal respond the USB peripheral hardware respectively and insert interruption or remove interruption.
Carry out the voltage dynamic management approach of mobile terminal system IO port by VBUS signal interruption mode, comprise following:
When external-connected port 5 inserted the outer if USB peripheral hardware of USB and removes, USB controller 6 sent interrupt signal to interrupt control unit; Interrupt control unit 11 is according to the interrupt signal of interruption subroutine response USB controller 6 generations of registered in advance, and the type of the state variation of judgement USB controller, determines that the USB peripheral hardware inserts or the USB peripheral hardware removes;
Judgement according to previous step, if inserted the interruption that the USB peripheral hardware causes, then thereby the MPU system IO voltage configuration that changes the register 9 of power management IC by bus changes the IO voltage of mobile terminal system, and by power management IC 3 the IO voltage of mobile terminal system being raise by VL is VH; As judgement is to have removed the USB peripheral hardware, then the IO of system voltage is reduced to normal VL by high voltage VH.
In addition, when external-connected port 5 had high voltage USB peripheral hardware PC to insert, 8 pairs of batteries 4 of the charging circuit of power management IC 3 charged.External-connected port 5 has connecting line to be connected with the charging circuit 8 of power management IC 3.When battery 4 is full of, power management IC 3 stops to charge automatically.
As shown in Figure 3, the MPU2 of portable terminal voltage dynamic management system of the present invention comprises a timer 13, and this timer 13 can repeat cycle regular hour and reclock.In addition, USB controller 6 comprises a status register 10, and these status register 10 reflection external-connected ports 5 insert the state of USB peripheral hardware.The portable terminal voltage dynamic management system of present embodiment starts timer 13 in the system initialization process, for example fixed time interval can be made as 100ms, every such time interval, microcontroller MPU 2 regularly reads the state information of the status register 10 of USB controller 6, has judged whether that the USB peripheral hardware inserts external-connected port; Perhaps the USB peripheral hardware is extracted from external-connected port.Because the time interval of 100MS is generally less than peripheral hardware and inserts or remove required operate time, so can think that generally the state variation that the adjustment and the external-connected port of the IO of system voltage inserts/remove is to carry out synchronously.
Present embodiment carries out the voltage dynamic management approach of IO port by the mode of poll USB controller state, comprises following:
MPU 2 reads the status register 10 of USB controller 6 every certain time interval (as 100MS), judges whether the state information of this register 10 changes;
If the state information of register 10 does not change, then continue the IO voltage of the power management IC of maintenance system, and the next timing cycle of waiting timer continues to read the information of the register 10 of USB controller;
If the state information of register 10 changes, judgement is that peripheral hardware inserts or peripheral hardware removes and causes: if USB inserts, then the logical buses of MPU 2 change the configuration of system IO voltage of the register 9 of power management IC, and it is VH that the IO voltage of system is raise by the VL of normal condition; If the USB peripheral hardware removes, then MPU2 changes the configuration of system IO voltage of the register 9 of power management IC by bus, and the IO voltage of system is reverted to normal condition VL by high voltage VH.
In addition, when external-connected port had the active peripheral hardware of high voltage to insert, 8 pairs of batteries 4 of the charging circuit of power management IC 3 charged.External-connected port 5 has connecting line to be connected with the charging circuit of power management IC 3.When battery 4 is full of, power management IC stops to charge automatically.
As shown in Figure 4, portable terminal voltage dynamic management system of the present invention, wherein MPU 2 comprises an interrupt control unit 11, the status register of power management IC 3 changed the interruption that causes when but these interrupt control unit 11 response external interfaces inserted the USB peripheral hardware or remove the USB peripheral hardware, wherein registered in this interrupt control unit 11 in the system initialization journey by external-connected port 5 and inserted outside the USB if remove the interruption that the USB peripheral hardware produces.
Concrete, when external-connected port 5 inserts the USB peripheral hardwares and USB peripheral hardware when removing,, make power management IC 3 send interrupt signal to interrupt control unit 11 because the line between external-connected port and power management IC transmits corresponding signal.
According to the type of interrupt signal, microcontroller MPU 2 changes the IO voltage configuration information of the register 9 of power management IC 3 by bus; Power management IC 3 exports IO voltage according to the voltage configuration of revising to MPU.Specifically, when external-connected port inserted high voltage USB peripheral hardware, systematically IO voltage was elevated to VH by normal voltage VL thereupon, to meet the requirement of USB2.0 agreement; And when removing after this high-tension USB peripheral hardware is finished using, the IO voltage of system returns to normal VL from high voltage VH.
The power management IC interrupt mode of present embodiment, its flow process comprises following:
When external-connected port inserted peripheral hardware, power management IC sent interrupt signal to the interrupt control unit 11 of MPU; Wherein, the Interrupt Process subprogram of interrupt control unit 11 is registered in the system in initialization procedure by mobile terminal system of the present invention;
MPU changes the IO voltage configuration information of the register 9 of power management IC according to the type of interrupting by bus; Power management IC promptly is raised to high voltage VH or returns to normal VL from VH from normal VL according to the IO voltage configuration information output system IO voltage of amended register 9.
As shown in Figure 5, portable terminal voltage dynamic management system of the present invention, wherein MPU 2 comprises a timer 13, this timer 13 can repeat cycle regular hour and reclock.In addition, power management IC 3 has a register 7, and the state information reflection external-connected port 5 of this register 7 inserts or remove the state of USB peripheral hardware.
Portable terminal voltage dynamic management system 1 starts timer 13 in the system initialization process, for example fixed time interval can be made as 100ms, every such time interval, microcontroller MPU 2 regularly reads the state information of the status register 7 of power management IC 3, has judged whether that the USB peripheral hardware inserts external-connected port or the USB peripheral hardware is extracted from external-connected port.
Wherein, outside external-connected port inserts USB if the USB peripheral hardware when external-connected port removes, the state information of the status register 7 of power management IC changes.The state information that microcontroller (MPU) 2 reads register 7 changes, and according to the type that state information changes, determines that the IO voltage of mobile terminal system is raised to high-tension VH or high-tension VH is returned to normal VL by normal VL.
Concrete, the logical MPU of microcontroller crosses bus is sent operational order from the IO of change system voltage to power management IC.This order changes the parameter of the system IO voltage output of power management IC, promptly changes the configuration information of register 9, thereby changes the system IO voltage to MPU output.
Present embodiment is realized dynamic configuration-system IO voltage by the mode of the register 7 of poll power management IC, and its flow process comprises the steps:
Start timer 13, this timer 13 is set the blanking time of 100ms for example in the system initialization process, and every such time interval, MPU 2 reads the state information of the register 7 of power management IC by bus;
In the present invention, when inserting and removing USB, can control IO voltage and between 3.0V-3.3V, switch, but also can be between other voltages, to switch.Portable terminal voltage dynamic management system of the present invention and method can make IO interface voltage dynamic change with the access situation of USB or peripheral hardware of portable terminal, thereby the high voltage that had both made system meet USB or peripheral hardware requires also to have reduced the load of system, can prolong the useful life of system and the stand-by time of battery, have excellent adaptability.
Claims (12)
1. portable terminal voltage dynamic management system is used for according to the access of peripheral hardware and removes state, dynamically changes the IO voltage of system, comprising:
Microprocessor;
Battery is used for providing power supply to portable terminal;
Power management IC is used to export the also operating voltage of managing mobile terminal each several part, is connected with battery;
External-connected port is used to insert peripheral hardware;
Wherein, when described microprocessor detected peripheral hardware and inserts described external-connected port, the IO voltage that power management IC is provided was increased to second voltage from first voltage;
When described microprocessor detects peripheral hardware when described external-connected port removes, the IO voltage that power management IC is provided is low to moderate first voltage from second voltage drop.
2. portable terminal voltage dynamic management system as claimed in claim 1, be characterised in that described microprocessor comprises an interrupt control unit, it is used to respond the interrupt requests of being sent by microprocessor or power management IC, and judges the insertion of peripheral hardware and remove according to the type of interrupt requests.
3. portable terminal voltage dynamic management system as claimed in claim 1 is characterised in that described power management IC comprises a register, is used to store the state information that peripheral hardware inserts and removes.
4. portable terminal voltage dynamic management system as claimed in claim 3 is characterised in that described microprocessor comprises a register, is used to store the state information that peripheral hardware inserts and removes.
5. portable terminal voltage dynamic management system as claimed in claim 4, be characterised in that described microprocessor comprises a timer, this microprocessor is according to the timing of timer, the buffer status of poll microprocessor or power management IC, and, judge the insertion of peripheral hardware and remove according to the state of register.
6. as each described portable terminal voltage dynamic management system of claim 1-5, be characterised in that described power management IC comprises the charging circuit that is connected with power supply with external-connected port, when being made as the active peripheral hardware of high voltage outside described, this charging circuit charges to battery.
7. portable terminal voltage dynamic management system as claimed in claim 6 is characterised in that the described register among the described power management IC, is used for the IO voltage configuration information of storage system, and the IO of this system voltage configuration information can be revised by microprocessor.
8. portable terminal voltage dynamic management approach may further comprise the steps:
Step 1: survey external-connected port peripheral hardware insertion and remove, when detecting the insertion of peripheral hardware, proceed to step 2, when detecting the removing of peripheral hardware, proceed to step 3;
Step 2 is increased to second voltage with the IO voltage of external-connected port from first voltage;
Step 3 is low to moderate first voltage with the IO voltage of external-connected port from second voltage drop.
9. method as claimed in claim 8, wherein,
In step 1, the microprocessor of portable terminal sends interrupt requests according to the state variation of external-connected port to interrupt control unit, and interrupt control unit judges that according to the type of interrupt requests peripheral hardware inserts and removes.
10. method as claimed in claim 8, wherein,
In step 1, microprocessor reads the state information of the register of microprocessor every certain time interval, judge that this state information does not have not change, as the type that changes of the state information according to register of changing then, judge that peripheral hardware inserts and removes, this register contains the state information that peripheral hardware inserts and removes.
11. method as claimed in claim 8, wherein,
In step 1, the power management IC of portable terminal sends interrupt requests according to the state variation of external-connected port to interrupt control unit; Interrupt control unit judges that according to the type of interrupt requests peripheral hardware inserts and removes.
12. method as claimed in claim 8, wherein,
In step 1, microprocessor reads the buffer status information of power management IC every certain time interval, judge that this state information does not have not change, as the type that changes of the state information according to register of changing then, judge that peripheral hardware inserts and removes, this register contains the state information that peripheral hardware inserts and removes.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101156234A CN100490273C (en) | 2005-11-08 | 2005-11-08 | mobile terminal voltage dynamic management system and method |
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| CNB2005101156234A CN100490273C (en) | 2005-11-08 | 2005-11-08 | mobile terminal voltage dynamic management system and method |
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| CN1964155A CN1964155A (en) | 2007-05-16 |
| CN100490273C true CN100490273C (en) | 2009-05-20 |
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Cited By (1)
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| TWI653537B (en) | 2017-04-24 | 2019-03-11 | 中國商上海寶存信息科技有限公司 | Methods for uninstalling ssd (solid-state disk) cards and apparatuses using the same |
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| CN104423276A (en) * | 2013-08-23 | 2015-03-18 | 苏州宝时得电动工具有限公司 | Power management method and power management module |
| CN105573940B (en) * | 2014-10-11 | 2019-01-15 | 航天信息股份有限公司 | A kind of automatic detection method and device of SDIO interface peripherals |
| CN105365706A (en) * | 2014-10-31 | 2016-03-02 | 北京卓为科技有限公司 | Vehicle signal and power interface transfer system |
| CN106383794A (en) * | 2016-09-18 | 2017-02-08 | 合肥联宝信息技术有限公司 | Serial port and USB port reuse method and electronic device |
| CN108628792B (en) * | 2018-05-14 | 2021-02-19 | 福建科立讯通信有限公司 | Communication interface current leakage prevention system and method |
| CN113094104A (en) * | 2020-01-09 | 2021-07-09 | 北京君正集成电路股份有限公司 | Design method of detection circuit for awakening low-power-consumption circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI653537B (en) | 2017-04-24 | 2019-03-11 | 中國商上海寶存信息科技有限公司 | Methods for uninstalling ssd (solid-state disk) cards and apparatuses using the same |
| US11099856B2 (en) | 2017-04-24 | 2021-08-24 | Shannon Systems Ltd. | Methods for uninstalling SSD (solid-state disk) cards and apparatuses using the same |
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| CN1964155A (en) | 2007-05-16 |
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