CN105204601B - A kind of system electrification automatic boot circuit and its starting-up method - Google Patents
A kind of system electrification automatic boot circuit and its starting-up method Download PDFInfo
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- CN105204601B CN105204601B CN201510589767.7A CN201510589767A CN105204601B CN 105204601 B CN105204601 B CN 105204601B CN 201510589767 A CN201510589767 A CN 201510589767A CN 105204601 B CN105204601 B CN 105204601B
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Abstract
The invention discloses a kind of system electrification automatic boot circuit and its starting-up method, which includes: normal electric generating unit, impulse generating unit, Power Management Unit and system CPU unit；Often the input terminal of electricity generating unit connects to power supply, and often the output end of electricity generating unit is connect with impulse generating unit with Power Management Unit respectively, is that impulse generating unit and Power Management Unit are powered；The pulse output end of impulse generating unit and the pulse input end of Power Management Unit connect；The output end of Power Management Unit is connect with the input terminal of system CPU unit.A kind of system electrification automatic boot circuit of the present invention and its starting-up method, the circuit structure is simple, at low cost, power management chip is triggered using impulse generating unit pulsing, to realize that system powers on automatically, stability is good, good compatibility, development cycle is short, is suitble to various normal electric supply arrangements.
Description
Technical field
The present invention relates to technical field of electronic equipment, and in particular to a kind of system electrification automatic boot circuit and its booting side
Method.
Background technique
In present electronic equipment, in especially hand-held (consumption) electronic equipment such as mobile phone and plate apparatus such as computer,
The booting of equipment is usually to be started by pressing one pulse signal of generation of the key in equipment.In order to design conveniently, phase
Necessary condition of the power management chip answered all by the triggering of key pulse as system electrification.
But when not needing the device of key triggering starting using the design of this kind of power management chip, key
Trigger signal becomes the restraining factors in design instead, if replacement power management chip, the design of the power supply of whole system
Equal to making a new start, causes bigger design risk and influence product development process.In this case, one is designed rationally
The trigger circuit that powers on become as the highest selection of cost performance.
In addition in the handheld device, also have it is a kind of plugging USB line to equipment charge or by way of making device power-up,
But its essence is not that the operation of substitution key is designed into non-portable set again without portable device, purpose is detached from
It is standby, but in order to improve the supplement that usb charge function is done.
Therefore a kind of structure is simple, at low cost, the system electrification Auto Power On motor realized using the power management chip
And its starting-up method urgently proposes.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of system electrification automatic boot circuit and its starting-up method,
The circuit structure is simple, at low cost, triggers power management chip using impulse generating unit pulsing, to realize system
Automatically it powers on, stability is good, good compatibility, and the development cycle is short, is suitble to various normal electric supply arrangements.
In order to achieve the above object, technical scheme is as follows:
A kind of system electrification automatic boot circuit, comprising: often electricity generating unit, impulse generating unit, Power Management Unit
And system CPU unit；Often electricity generating unit input terminal connect to power supply, often electricity generating unit output end respectively with pulse
Generating unit is connect with Power Management Unit, is that impulse generating unit and Power Management Unit are powered；The arteries and veins of impulse generating unit
The pulse input end for rushing output end and Power Management Unit connects；The output end of Power Management Unit is defeated with system CPU unit
Enter end connection.
A kind of Power Management Unit of the system electrification automatic boot circuit of the present invention by tradition application on portable devices
It applies on normal electric supply arrangement, so that often the cost of electricity supply arrangement is low, the development cycle is short, convenient for the research and development of product.
Based on the above technical solution, following improvement can also be done:
As a preferred option, Power Management Unit is the chip or circuit started by pulse-triggered.
Using the above preferred scheme, the scope of application is big.
As a preferred option, impulse generating unit is electronic circuit reset chip.
Using the above preferred scheme, at low cost, yield reaches.
As a preferred option, Power Management Unit is connect with system CPU unit by I2C bus.
Using the above preferred scheme, signal transmits quick and precisely.
As a preferred option, on-off circuit, the signal of on-off circuit are additionally provided between power supply and normal electric generating unit
Input port is connect with system CPU unit；When on-off circuit is not received by the break signal of system CPU unit transmission, lead to
Deenergizing is channel status, and often electricity generating unit is connected to power supply；When on-off circuit receives the open circuit of system CPU unit transmission
When signal, on-off circuit is off state, and often electricity generating unit and power supply disconnect.
Using the above preferred scheme, the on-off circuit circuit is more energy efficient.
A kind of system electrification automatic power-on method, is booted up using system electrification automatic boot circuit, including following step
It is rapid:
(1) power supply is powered to often electric generating unit；
(2) often electric generating unit generates suitable voltage and gives impulse generating unit and Power Management Unit power supply respectively；
(3) impulse generating unit is started to work, and is generated pulse, is sent to Power Management Unit；
(4) Power Management Unit receives pulse triggering signal, starts to start, and Power Management Unit triggers system CPU list
Member powers on.
A kind of system electrification automatic power-on method starting procedure of the present invention is convenient and quick.
As a preferred option, in step (3), impulse generating unit is started to work, and the pulse of impulse generating unit is defeated
The pin of outlet is first set to high level, then exports a low pulse at interval of a period of time, is sent to Power Management Unit.
Using the above preferred scheme, guarantee that Power Management Unit can effectively receive the arteries and veins of impulse generating unit sending
Punching.
As a preferred option, in step (3), the pulse output end of impulse generating unit was exported between the time of low pulse
Every can be adjusted.
Using the above preferred scheme, convenient for the time of adjusting booting.
As a preferred option, step (4) includes following sub-step:
(4.1) Power Management Unit receives pulse triggering signal, while Power Management Unit is to internal register flag
Position is marked, and it is impulse generating unit that label, which starts auto- trigger source,；
(4.2) Power Management Unit control system CPU element powers on；
(4.3) system CPU unit powers on success, and system CPU unit reads the internal register mark of Power Management Unit
Position judges the flag bit with the presence or absence of mark；
If there is mark, the movement that powers on of system CPU unit is that Power Management Unit triggers, and system CPU unit is then stood
Carve the trigger signal that shielded power supply administrative unit is persistently sent；
If not indicating, the movement that powers on of system CPU unit is triggered by the electrification circuit other than Power Management Unit.
Using the above preferred scheme, the triggering that shielded power supply administrative unit is sent after system CPU unit successfully powers on
Signal guarantees the work that system then can be stable.
As a preferred option, system electrification automatic power-on method further includes step (5):
(5) after system CPU unit powers on successfully, system CPU unit sends break signal to on-off circuit, on-off circuit with
It is afterwards that off state, often electricity generating unit and power supply disconnect.
Using the above preferred scheme, often electric generating unit and power supply are powered in system CPU unit and are successfully disconnected afterwards, not unrestrained
Power-consuming energy, it is more environmentally friendly.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of system electrification automatic boot circuit provided in an embodiment of the present invention.
Fig. 2 is the circuit diagram of system electrification automatic boot circuit provided in an embodiment of the present invention.
Fig. 3 is the second structural representation of system electrification automatic boot circuit provided in an embodiment of the present invention.
Wherein: 1 normal electric generating unit, 2 impulse generating units, 3 Power Management Unit, 4 system CPU units, 5 electricity
Source, 6 on-off circuits.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
In order to reach the purpose of the present invention, in the reality of a kind of system electrification automatic boot circuit of the present invention and its starting-up method
It applies in mode,
As illustrated in fig. 1 and 2, a kind of system electrification automatic boot circuit, comprising: often electricity generating unit 1, impulse generating unit
2, Power Management Unit 3 and system CPU unit 4；Often the input terminal of electricity generating unit 1 is connect with power supply 5, often electricity generating unit
1 output end is connect with impulse generating unit 2 with Power Management Unit 3 respectively, is impulse generating unit 2 and Power Management Unit
3 power supplies；The pulse output end of impulse generating unit 2 is connect with the pulse input end of Power Management Unit 3；Power Management Unit 3
Output end connect with the input terminal of system CPU unit 4 by I2C bus.
In the present embodiment, Power Management Unit 3 is the chip started by pulse-triggered.Certainly, Power Management Unit 3
It can be the circuit started by pulse-triggered.
Impulse generating unit 2 is electronic circuit reset chip.
A kind of system electrification automatic power-on method, is booted up using system electrification automatic boot circuit, including following step
It is rapid:
(1) power supply 5 is powered to often electric generating unit 1；
(2) often electric generating unit 1 generates suitable voltage respectively to impulse generating unit 2 and the power supply of Power Management Unit 3；
(3) impulse generating unit 2 is started to work, and the pin of the pulse output end of impulse generating unit 2 is first set to high level,
Then every the low pulse of 1 second one a few tens of milliseconds of output, it is sent to Power Management Unit 3；
(4.1) Power Management Unit 3 receives pulse triggering signal, while Power Management Unit 3 is to internal register mark
Will position is marked, and it is impulse generating unit 2 that label, which starts auto- trigger source,；
(4.2) 3 control system CPU element 4 of Power Management Unit powers on；
(4.3) system CPU unit 4 powers on success, and system CPU unit 4 reads the internal register mark of Power Management Unit 3
Will position judges the flag bit with the presence or absence of mark；
If there is mark, the movement that powers on of system CPU unit 4 is that Power Management Unit 3 triggers, and system CPU unit 4 is subsequent
The trigger signal that shielded power supply administrative unit 3 is persistently sent at once, system CPU unit 4 then immediately close off Power Management Unit 3
Inside power up interrupt it is enabled, retransmit Power Management Unit 3 not after receiving the lasting low pulse of impulse generating unit 2
Interrupt signal is to system CPU unit 4；
If not indicating, the movement that powers on of system CPU unit 4 is triggered by the electrification circuit other than Power Management Unit 3.
A kind of system electrification automatic boot circuit of the present invention and its starting-up method, Power Management Unit 3, which is worked as, detects low arteries and veins
Rush input signal, it is believed that the movement that one-touch is pressed then opens internal circuit, and exports each road voltage according to default value is powered on
The subsequent each section circuit of feed system, while Power Management Unit 3 can be arranged internal register flag bit and mark starting certainly
The movement of body is pulse triggering source.After system CPU unit 4 powers on, system CPU unit 4 reads power management list by I2C bus
The flag bit of member 3 is to know that this boot action is pulse-triggered movement rather than other movements such as timer, therefore system CPU list
Member 4 enters normal electrifying startup state, starts operation system of software, opens each functional block in hardware system.Meanwhile system
CPU element 4 masks the trigger signal that Power Management Unit 3 is sent after powering on, wake-up interrupts make system no longer receive " key "
Movement.It realizes using the Power Management Unit 3 in handheld device and smoothly realizes the safe and reliable upper of normal electric supply arrangement
Electric process.
A kind of system electrification automatic boot circuit of the present invention simulates " key " using simple electronic circuit reset chip
Triggering, realizes the triggering to Power Management Unit 3, to realize booting, at low cost, compatibility and stability are good, and system can
By property height.Meanwhile being triggered using the input that software masking falls periodic subsequent pulse, it ensure that the hardware of often electric supply arrangement
It is good with the compatibility and stability of software.
The Power Management Unit 3 of tradition application on portable devices is applied on normal electric supply arrangement, so that often electricity
The cost of supply arrangement is low, and the development cycle is short, convenient for the research and development of product.It is to be difficult under the premise of without creative thinking
Expect applying using the Power Management Unit 3 on normal electric supply arrangement.Meanwhile it can be fitted by adjusting often electric input unit 1
Should in the input of different range voltage, and can effectively export suitable for impulse generating unit 2 and Power Management Unit 3 work
Voltage.
In order to further optimize implementation result of the invention, in other embodiment, remaining feature technology phase
Together, the difference is that, in step (3), the time interval that the pulse output end of impulse generating unit exports low pulse can be into
Row is adjusted.
Using the above preferred scheme, convenient for the time of adjusting booting.
As shown in figure 3, in order to further optimize implementation result of the invention, in other embodiment, remaining
Feature technology is identical, the difference is that, on-off circuit 6, on-off circuit 6 are additionally provided between power supply 5 and often electric generating unit 1
Signal input port connect with system CPU unit 4；When on-off circuit 6 is not received by the open circuit of the transmission of system CPU unit 4
When signal, on-off circuit is channel status, and often electricity generating unit 1 is connected to power supply 5；When on-off circuit 6 receives system CPU list
When the break signal that member 4 is sent, on-off circuit 6 is off state, and often electricity generating unit 1 is disconnected with power supply 5.
System electrification automatic power-on method further includes step (5):
(5) after system CPU unit powers on successfully, system CPU unit 4 sends break signal to on-off circuit 6, on-off circuit
6 be then off state, and often electricity generating unit 1 is disconnected with power supply 5.
Using the above preferred scheme, normal electric generating unit 1 is powered on power supply 5 in system CPU unit 4 successfully disconnects afterwards,
Electric energy is not wasted, it is more environmentally friendly.
The above are merely the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art,
Without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (7)
1. a kind of system electrification automatic boot circuit characterized by comprising often electricity generating unit, impulse generating unit, power supply
Administrative unit and system CPU unit；
The input terminal of the normal electric generating unit connects to power supply, the output end of the normal electric generating unit respectively with the pulse
Generating unit is connect with the Power Management Unit, is that the impulse generating unit and the Power Management Unit are powered；
The pulse output end of the impulse generating unit is connect with the pulse input end of the Power Management Unit；
The output end of the Power Management Unit is connect with the input terminal of the system CPU unit；
The system electrification automatic boot circuit is realized by following step and is switched on:
(1) power supply is powered to the normal electric generating unit；
(2) the normal electric generating unit generates suitable voltage and gives the impulse generating unit and the Power Management Unit respectively
Power supply；
(3) impulse generating unit is started to work, and is generated pulse, is sent to the Power Management Unit；
(4) Power Management Unit receives pulse triggering signal, starts to start, and the Power Management Unit triggers the system
System CPU element powers on；
The step (4) includes following sub-step:
(4.1) Power Management Unit receives pulse triggering signal, while the Power Management Unit is to internal register
Flag bit is marked, and it is impulse generating unit that label, which starts auto- trigger source,；
(4.2) Power Management Unit controls the system CPU unit and powers on；
(4.3) the system CPU unit powers on success, and the inside that the system CPU unit reads the Power Management Unit is posted
Storage flag bit judges the flag bit with the presence or absence of mark；
If there is mark, the movement that powers on of the system CPU unit is that the Power Management Unit triggers, the system CPU list
It is first then to shield the trigger signal that the Power Management Unit is persistently sent at once；
If not indicating, the movement that powers on of the system CPU unit is touched by the electrification circuit other than the Power Management Unit
Hair；
(5) after the system CPU unit powers on successfully, the system CPU unit transmission break signal is described logical to on-off circuit
Deenergizing is then off state, and the normal electric generating unit and the power supply disconnect.
2. system according to claim 1 powers on automatic boot circuit, which is characterized in that the Power Management Unit is served as reasons
The chip or circuit of pulse-triggered starting.
3. system electrification automatic boot circuit according to claim 2, which is characterized in that the impulse generating unit is electricity
Sub-circuit reset chip.
4. system electrification automatic boot circuit according to claim 3, which is characterized in that the Power Management Unit and institute
System CPU unit is stated to connect by I2C bus.
5. system electrification automatic boot circuit according to claim 1-4, which is characterized in that the power supply and institute
It states and is additionally provided with on-off circuit, the signal input port of the on-off circuit and the system CPU list between often electric generating unit
Member connection；
When the on-off circuit is not received by the break signal that the system CPU unit is sent, the on-off circuit is logical
Line state, the normal electric generating unit are connected to the power supply；
When the on-off circuit receives the break signal that the system CPU unit is sent, the on-off circuit is breaking shape
State, the normal electric generating unit and the power supply disconnect.
6. a kind of system electrification automatic power-on method, which is characterized in that utilize the described in any item system electrifications of claim 1-5
Automatic boot circuit boots up, comprising the following steps:
(1) power supply is powered to often electric generating unit；
(2) often electric generating unit generates suitable voltage and gives impulse generating unit and Power Management Unit power supply respectively；
(3) impulse generating unit is started to work, and is generated pulse, is sent to the Power Management Unit；
(4) Power Management Unit receives pulse triggering signal, starts to start, and the Power Management Unit triggers the system
System CPU element powers on；
The step (4) includes following sub-step:
(4.1) Power Management Unit receives pulse triggering signal, while the Power Management Unit is to internal register
Flag bit is marked, and it is impulse generating unit that label, which starts auto- trigger source,；
(4.2) Power Management Unit controls the system CPU unit and powers on；
(4.3) the system CPU unit powers on success, and the inside that the system CPU unit reads the Power Management Unit is posted
Storage flag bit judges the flag bit with the presence or absence of mark；
If there is mark, the movement that powers on of the system CPU unit is that the Power Management Unit triggers, the system CPU list
It is first then to shield the trigger signal that the Power Management Unit is persistently sent at once；
If not indicating, the movement that powers on of the system CPU unit is touched by the electrification circuit other than the Power Management Unit
Hair；
(5) after the system CPU unit powers on successfully, the system CPU unit transmission break signal is described logical to on-off circuit
Deenergizing is then off state, and the normal electric generating unit and the power supply disconnect；
In the step (3), the impulse generating unit is started to work, the pipe of the pulse output end of the impulse generating unit
Foot is first set to high level, then exports a low pulse at interval of a period of time, is sent to the Power Management Unit.
7. system electrification automatic power-on method according to claim 6, which is characterized in that described in the step (3)
The time interval that the pulse output end of impulse generating unit exports low pulse can be adjusted.
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| CN201510589767.7A CN105204601B (en) | 2015-09-16 | 2015-09-16 | A kind of system electrification automatic boot circuit and its starting-up method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3572889B1 (en) * | 2017-02-17 | 2021-07-07 | Huawei Technologies Co., Ltd. | Control circuit and circuit control method |
| CN107797641A (en) * | 2017-10-19 | 2018-03-13 | 广东乐心医疗电子股份有限公司 | Power supply control method and control circuit for processor and electronic equipment |
| CN109408129A (en) * | 2018-11-13 | 2019-03-01 | 郑州云海信息技术有限公司 | A kind of system automatic power-on method and a kind of system of Auto Power On |
| CN109710048B (en) * | 2018-12-19 | 2022-07-22 | 中国兵器装备集团自动化研究所有限公司 | Portable terminal power supply management method based on Loongson processor |
| CN110488725A (en) * | 2019-09-24 | 2019-11-22 | 天津七一二通信广播股份有限公司 | A kind of subway facility switching circuit |
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| CN101677143A (en) * | 2008-09-19 | 2010-03-24 | 联想(北京)有限公司 | Mobile terminal charging control method and mobile terminals |
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