CN108268388B - A kind of Type-C interface protective circuit and method, mobile terminal - Google Patents
A kind of Type-C interface protective circuit and method, mobile terminal Download PDFInfo
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- CN108268388B CN108268388B CN201611263864.8A CN201611263864A CN108268388B CN 108268388 B CN108268388 B CN 108268388B CN 201611263864 A CN201611263864 A CN 201611263864A CN 108268388 B CN108268388 B CN 108268388B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
- G06F13/122—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware performs an I/O function other than control of data transfer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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Abstract
The embodiment of the invention provides a kind of Type-C interface protective circuit and methods, mobile terminal; the Type-C interface has CC1 pin and CC2 pin; the circuit includes: detection voltage module, for detecting the voltage value for being input to the analog-digital converter ADC of controller；Controller, for generating power-on and power-off instruction according to the voltage value of the analog-digital converter ADC；CC logic processor powers on or lower electricity for being instructed according to the power-on and power-off to the CC1 pin or CC2 pin.The embodiment of the present invention, which can solve current CC1 or CC2 pin electrification, can accelerate CC1 or CC2 pin chemical attack, influence equipment insertion detection, lead to erroneous judgement problem.
Description
Technical field
The present invention relates to fields of communication technology, more particularly, to a kind of Type-C interface protective circuit and method, move eventually
End.
Background technique
With the development of electronic technology and the communication technology, Mobile Communication Industry is quickly grown, and mobile terminal has become people
Routine work, life necessary article.
The two-sided insertion of Type-C interface supporting interface, formally solves the difficulty for needing to distinguish front and back sides with front port when being inserted into
Topic, realizing front and back sides all can be inserted into.It is also thinner and lighter with its matching used data line simultaneously.
In Type-C specification, whether CC1 or CC2 pin has insertion for detection device.On mobile terminals, it to detect
Whether peripheral hardware insertion is had, CC1 or CC2 pin default is pulled up by current source or voltage source, so under normal circumstances in Type-C
CC1 or CC2 pin on female mouth charges always, when interface socket enters sweat, when the impurity such as steam, and CC1 or CC2 pin
There are voltages between electrification meeting and ground, and low impedance path is formed between CC1 or CC2 pin and ground, accelerate CC1 or CC2 pin
Chemical attack influences equipment insertion detection, causes to judge by accident.
Summary of the invention
The embodiment of the present invention proposes a kind of Type-C interface protective circuit and method, mobile terminal, to solve current CC1
Or the electrification of CC2 pin can accelerate CC1 or CC2 pin chemical attack, influence equipment insertion detection, lead to erroneous judgement problem.
In a first aspect, providing a kind of Type-C interface protective circuit, the Type-C interface has CC1 pin and CC2
Pin, the circuit include:
Voltage module is detected, for detecting the voltage value for being input to the analog-digital converter ADC of controller；
Controller, for generating power-on and power-off instruction according to the voltage value of the analog-digital converter ADC；
CC logic processor, for according to the power-on and power-off instruct to the CC1 pin or CC2 pin power on or under
Electricity.
Second aspect provides a kind of method of Type-C interface protection, is applied to include having Type-C interface protection
The mobile terminal of circuit, the Type-C interface protective circuit have analog-digital converter ADC, which comprises
Detect the voltage value of the analog-digital converter ADC；
Power-on and power-off instruction is generated according to the voltage value；
CC1 pin or CC2 pin to the Type-C interface is instructed to power on or lower electricity according to the power-on and power-off.
The third aspect provides a kind of mobile terminal, and the mobile terminal includes Type-C interface protective circuit, described
Type-C interface protective circuit has analog-digital converter ADC, the mobile terminal further include:
Detection module, for obtaining the voltage value of the analog-digital converter ADC；
Power-on and power-off directive generation module, for generating power-on and power-off instruction according to the voltage value；
Power-on and power-off module, for instructing according to the power-on and power-off to the CC1 pin or CC2 pin of the Type-C interface
It powers on or lower electricity.
In embodiments of the present invention, Type-C interface protective circuit, comprising: detection voltage module is input to for detecting
The voltage value of the analog-digital converter ADC of controller；Controller, for being generated according to the voltage value of the analog-digital converter ADC
Lower electricity instruction；CC logic processor, powered on to the CC1 pin or CC2 pin for being instructed according to the power-on and power-off or
Lower electricity is input to the voltage value of the analog-digital converter ADC of controller by detecting using the embodiment of the present invention, is turned according to modulus
The voltage value of parallel operation ADC generates power-on and power-off instruction, is instructed and is powered on to CC1 pin or CC2 pin or lower electricity according to power-on and power-off,
Solve the problems, such as that CC1 the or CC2 pin on mother's Type-C mouth charges always, when interface socket enters sweat, the impurity such as steam
When, can be effectively prevented CC1 or CC2 pin electrification meeting and ground between there are voltages, formed between CC1 or CC2 pin and ground
Low impedance path accelerates the chemical attack of CC1 or CC2 pin, influences equipment insertion detection, causes to judge by accident.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by institute in the description to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of Type-C interface protective circuit of the embodiment of the present invention one；
Fig. 2 is a kind of concrete structure schematic diagram of Type-C interface protective circuit of the embodiment of the present invention one；
Electrical block diagram when Fig. 3 is the Type-C interface access device of the embodiment of the present invention one；
Fig. 4 is a kind of step flow chart of the method for Type-C interface protection of the embodiment of the present invention two；
Fig. 5 is a kind of one of the structural block diagram of mobile terminal of the embodiment of the present invention three；
Fig. 5 a is the two of the structural block diagram of a kind of mobile terminal of the embodiment of the present invention three；
Fig. 6 is a kind of structural block diagram of mobile terminal of the embodiment of the present invention four；
Fig. 7 is a kind of structural schematic diagram of mobile terminal of the embodiment of the present invention five.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of structural schematic diagram of Type-C interface protective circuit of the embodiment of the present invention one.
Shown in referring to Fig.1, a kind of Type-C interface protective circuit of the embodiment of the present invention, the Type-C interface 101 has
There are CC1 pin and CC2 pin, the circuit includes: to detect voltage module 102, controller 103, CC logic processor 104,
In,
Voltage module 102 is detected, for detecting the voltage value for being input to the analog-digital converter ADC of controller；
Controller 103, for generating power-on and power-off instruction according to the voltage value of analog-digital converter ADC；
CC logic processor 104, for according to power-on and power-off instruct to the CC1 pin or CC2 pin power on or under
Electricity.
Optionally, as shown in Fig. 2, detection voltage module 102 includes the first power supply 1021, the 1022, first electricity of second source
Resistance 1023, second resistance 1024,3rd resistor 1025 and the 4th resistance 1026, wherein
The CC1 pin of Type-C interface 101 is connected with one end of first resistor 1023, the other end of first resistor 1023 with
One end connection of the analog-digital converter ADC and the 4th resistance 1026 of controller 103, the other end of the 4th resistance 1026 and the first electricity
Source 1021 is connected；
The CC2 pin of Type-C interface 101 is connect with second resistance 1023, the mould of second resistance 1023 and controller 103
Number converter ADC is connected with one end of 3rd resistor 1025, and the other end of 3rd resistor 1025 is connected with second source 1022.
Optionally, in the embodiment of the present invention, first resistor 1023, second resistance 1024,3rd resistor 1025 and the 4th electricity
The following condition of satisfaction of resistance 1026:
Wherein, R1For the resistance value of first resistor 1023, R2For the resistance value of second resistance 1024, R3For 3rd resistor
1025 resistance value, R4For the resistance value of the 4th resistance 1026, RdFor the resistance value to ground resistance, VADC1For the first predeterminated voltage
Thresholding, VADC2For the second predeterminated voltage thresholding, the first predeterminated voltage thresholding is less than or equal to the second predeterminated voltage thresholding.
When it is implemented, the first power supply 1021, second source 1022 are auxiliary detection power supply, first resistor 1023, second
The effect of resistance 1024,3rd resistor 1025 and the 4th resistance 1026 is the electric current that limitation passes through CC1 pin or CC2 pin,
In order to prevent in the case where no access, the voltage of CC1 pin or CC2 pin is excessive, can be by the first power supply 1021, second
The voltage value of power supply 1022 is arranged smaller, such as 3.3V, 1.8V, while by first resistor 1023, second resistance 1024,
The resistance value of three resistance 1025 and the 4th resistance 1026 setting compare it is larger, with guarantee can detect analog-digital converter ADC
Voltage guarantee that the voltage-to-ground of CC1 pin perhaps CC2 pin is relatively small again and will not damage CC1 pin or CC2 pin.
Preferably, the voltage value of the first power supply 1021 and second source 1022 can be equal, 1023 He of first resistor
The resistance value of second resistance 1024 can be equal, and the resistance value of 3rd resistor 1025 and the 4th resistance 1025 can be equal
, this is allowed for, and when peripheral equipment accesses Type-C interface, no matter is connected to CC1 pin or CC2 pin, analog-digital converter ADC
Voltage value be the same.
When being accessed below with reference to peripheral equipment, the scheme of the Type-C interface protection for embodiment that the present invention will be described in detail.
As shown in figure 3, electrical block diagram when being Type-C interface access device of the embodiment of the present invention, including master set
Standby 10 and access device 20, the CC1 pin or CC2 pin of main equipment 10 are connected by CC and access device 20, access device
20 include to ground resistance Rd。
Access device 20 is connected by connecting line 30 with the CC1 pin of the Type-C interface 101 of main equipment 10 or CC2 pin
When, it has accessed in CC1 pin or CC2 pin to ground resistance Rd, cause the voltage value of analog-digital converter ADC to decline, controller 103
When detecting that voltage value is less than or equal to the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, it is determined that there is peripheral equipment
Access, the generation of controller 103 power on instruction and are sent to the CC logic processor 104 being attached thereto, and CC logic processor 104 receives
To after powering on instruction, the connected resistance of CC1 pin or CC2 pin is pulled upward to current source or voltage source, realize to CC1 pin or
CC2 pin powers on.
The Type-C interface protective circuit of the embodiment of the present invention detects analog-digital converter ADC's by detection voltage module
Voltage value, according to voltage value generate power-on and power-off instruction be sent to CC logic processor, by CC processor according to power-on and power-off instruct to
CC1 pin or CC2 pin power on or lower electricity, when having realized equipment access Type-C interface, just to CC1 pin or
CC2 pin powers on, and solves the problems, such as that CC1 the or CC2 pin on mother's Type-C mouth charges always, can be effectively prevented CC1 or
CC2 pin charges always between meeting and ground that there are voltages, and low impedance path is formed between CC1 or CC2 pin and ground, accelerates
CC1 or CC2 pin chemical attack influences equipment insertion detection, causes to judge by accident.
Embodiment two
Fig. 4 is a kind of step flow chart of the method for Type-C interface protection of the embodiment of the present invention two.
Referring to shown in Fig. 4, a kind of method of Type-C interface protection of the embodiment of the present invention is applied to include embodiment one
The method of the mobile terminal of the Type-C interface protective circuit, the Type-C interface protection includes:
Step 201, the voltage value of the analog-digital converter ADC is detected.
Referring to embodiment one, Type-C interface protective circuit includes: detection voltage module, and detection voltage module is for detecting
It is input to the voltage value of the analog-digital converter ADC of controller.
In a particular application, detection voltage module includes the first power supply, second source, first resistor, second resistance, third
Resistance and the 4th resistance, wherein
The CC1 pin of Type-C interface is connected with one end of first resistor, the other end of first resistor and the mould of controller
The connection of one end of number converter ADC and the 4th resistance, the other end of the 4th resistance are connected with the first power supply；Type-C interface
CC2 pin is connect with second resistance, the analog-digital converter ADC of second resistance and controller and one end connection of 3rd resistor, the
The other end of three resistance is connected with second source.
Therefore, under the action of the first power supply and second source, analog-digital converter ADC has the voltage value of a default to deposit
, when CC1 or CC2 pin access peripheral equipment when, analog-digital converter ADC voltage value variation, analog-digital converter can be passed through
The voltage value of ADC judges whether there is equipment access.
Step 202, power-on and power-off instruction is generated according to the voltage value.
In embodiments of the present invention, Type-C interface protective circuit includes controller, which passes through analog-digital converter ADC
It is connected with detection voltage module, controller can directly obtain the voltage value of analog-digital converter ADC, the first predeterminated voltage door
Limit is less than or equal to the second predeterminated voltage thresholding；The step 202 can specifically include following sub-step:
When having detected that peripheral equipment is accessed by CC1 pin, if the voltage value is less than or equal to the first default electricity
Pressure gate limit, then generate and power on instruction for the first of the CC1 pin；
When having detected that peripheral equipment is accessed by CC2 pin, if the voltage value is less than or equal to the second default electricity
Pressure gate limit, then generate and power on instruction for the second of the CC2 pin.
In Type-C interface protective circuit, the first power supply, second source, first resistor, second of voltage module are detected
Resistance, 3rd resistor and the 4th resistance are can be fixed and invariable, when there is no equipment to access Type-C interface, analog-to-digital conversion
The voltage value of device ADC is a fixed value, can will be less than any voltage value of the fixed value as predeterminated voltage thresholding, example
Such as, predeterminated voltage thresholding can be set as in the voltage value after the error that the fixed value eliminates circuit influence of fluctuations itself, certainly
Can also be set according to access device actual conditions, the embodiment of the present invention to the mode of predeterminated voltage thresholding with no restrictions.
The voltage value of analog-digital converter ADC and the size of predeterminated voltage thresholding can be compared by controller, it is determined whether
There is equipment access, comparison result can also be sent to by controller by the size of the processor comparing voltage value of mobile terminal.
Referring to embodiment one, in detection voltage module, the CC1 pin and one end phase of first resistor of Type-C interface
Even, one end of the other end of first resistor and the analog-digital converter ADC of controller and the 4th resistance connects, the 4th resistance it is another
End is connected with the first power supply；The CC2 pin of Type-C interface is connect with second resistance, the analog-to-digital conversion of second resistance and controller
Device ADC is connected with one end of 3rd resistor, and the other end of 3rd resistor is connected with second source, and the first power supply and second source are
Detect accessory power supply, voltage value can be it is equal, the resistance value of first resistor and second resistance can be it is equal, third electricity
The resistance value of resistance and the 4th resistance can be equal, this is allowed for, and when peripheral equipment accesses Type-C interface, no matter be connected to
CC1 pin or CC2 pin, the voltage value of analog-digital converter ADC are the same.
When equipment accesses Type-C interface, the equipment of access has resistance R over the grounddDrawn by CC1 pin or CC2
Foot access detection voltage module, the resistance R of the equipment of access over the grounddIt is assigned with the part electricity of the first power supply or second source
Pressure, when voltage value is less than or equal to predeterminated voltage thresholding, illustrates there is periphery so that the voltage value of analog-digital converter ADC declines
Equipment accesses Type-C interface, needs to be communicated by CC1 pin or CC2 pin and access device, therefore controller can
Instruction is powered on to generate, instruction CC logic processor is powered on to CC1 pin or CC2 pin.
In one preferred embodiment of the invention, the step 202 can also include following sub-step:
If the voltage value is greater than the first predeterminated voltage thresholding and is less than or when the second predeterminated voltage thresholding, generates lower electricity and refer to
It enables.
It may include two kinds of situations that voltage value, which is greater than predeterminated voltage thresholding, when there is no equipment to access Type-C interface, mould
The voltage value of number converter ADC is greater than predeterminated voltage thresholding, does not power at this time, therefore, instructs without lower electricity is generated, or
Person generates lower electricity instruction and is sent to CC logic processor, and CC logic processor can not execute behaviour according to being currently power-down state
Make.
Another situation is that after Type-C interface access device, after being powered on to CC1 pin or CC2 pin, access device
When exiting Type-C interface, the voltage value of analog-digital converter ADC becomes greater than default electricity by being less than or equal to predeterminated voltage thresholding
Pressure gate limit, at this time, it may be necessary to then generate lower electricity instruction to electricity under CC1 pin or CC2 pin, indicate CC logic processor to CC1
It is electric under pin or CC2 pin.
Step 203, according to the power-on and power-off instruct CC1 pin or CC2 pin to the Type-C interface power on or
It is electric under person.
In embodiments of the present invention, it after CC logic processor receives power-on and power-off instruction, instructs according to power-on and power-off and draws to CC1
Foot or CC2 pin power on or lower electricity specifically may include:
Mobile terminal controls the CC logic processor on the CC1 pin or CC2 pin according to instruction is powered on
Electricity, alternatively, controlling the CC logic processor to electricity under the CC1 pin or CC2 pin according to lower electricity instruction.
In the concrete realization, there can be the pull-up connecting with CC1 pin or CC2 pin with equipment inside CC logic processor
Resistance, when receive power on instruction when, pull-up resistor pull-up values current source or voltage source are realized to CC1 pin or
CC2 pin powers on；When receive power on instruction when, pull-up resistor is resetted or is realized to CC1 pin or CC2 with pulling down to
It is electric under pin.
In the embodiment of the present invention, by the voltage value for detecting analog-digital converter ADC；Power-on and power-off are generated according to voltage value to refer to
It enables；It instructs CC1 pin or CC2 pin to Type-C interface to power on or lower electricity according to power-on and power-off, implements using the present invention
Example can determine whether that equipment accesses Type-C interface according to voltage value by the voltage value of detection analog-digital converter ADC,
It is just powered on to CC1 pin or CC2 pin when determining has equipment access, solves CC1 the or CC2 pin on mother's Type-C mouth
The problem of charging always can be effectively prevented CC1 or CC2 pin and charge between meeting and ground that there are voltages always, in CC1 or CC2
Low impedance path is formed between pin and ground, accelerates the chemical attack of CC1 or CC2 pin, is influenced equipment insertion detection, is caused to miss
Sentence.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
Embodiment three
Fig. 5 is a kind of structural block diagram of mobile terminal of the embodiment of the present invention three.
Referring to Figure 5, a kind of mobile terminal 300 provided in an embodiment of the present invention includes Type-C interface protective circuit,
The Type-C interface protective circuit has analog-digital converter ADC, mobile terminal 300 further include:
Detection module 301, for obtaining the voltage value of the analog-digital converter ADC；
Power-on and power-off directive generation module 302, for generating power-on and power-off instruction according to the voltage value；
Power-on and power-off module 303, for instructing according to the power-on and power-off to the CC1 pin or CC2 of the Type-C interface
Pin powers on or lower electricity.
Referring to shown in Fig. 5 a, in the mobile terminal 300 of the embodiment of the present invention, power-on and power-off directive generation module 302 includes:
First instruction generate submodule 3021, for when detected peripheral equipment by CC1 pin access when, if described
Voltage value is less than or equal to the first predeterminated voltage thresholding, then generates and power on instruction for the first of the CC1 pin；
Second instruction generate submodule 3022, for when detected peripheral equipment by CC2 pin access when, if described
Voltage value is less than or equal to the second predeterminated voltage thresholding, then generates and power on instruction for the second of the CC2 pin；
Third instruction generates submodule 3023, is less than or second if being greater than the first predeterminated voltage thresholding for the voltage value
When predeterminated voltage thresholding, then lower electricity instruction is generated.
Referring to shown in Fig. 5 a, in the mobile terminal 300 of the embodiment of the present invention, power-on and power-off module 303 includes:
Upper electronic module 3031, for according to powering on instruction, control the CC logic processor to the CC1 pin or
CC2 pin powers on；
Lower electronic module 3032, for according to lower electricity instruction, control the CC logic processor to the CC1 pin or
It is electric under CC2 pin.
Mobile terminal can be realized each process that mobile terminal is realized in the embodiment of the method for Fig. 4, to avoid repeating, this
In repeat no more.
In the embodiment of the present invention, mobile terminal passes through the voltage value of detection analog-digital converter ADC；It is generated according to voltage value
Lower electricity instruction；CC1 pin or CC2 pin to Type-C interface is instructed to power on or lower electricity according to power-on and power-off, using this hair
Bright embodiment can determine whether that equipment accesses Type-C according to voltage value by the voltage value of detection analog-digital converter ADC
Interface is just powered on to CC1 pin or CC2 pin when determining has equipment access, solve CC1 on mother's Type-C mouth or
The problem of CC2 pin charges always can be effectively prevented CC1 or CC2 pin and charge between meeting and ground that there are voltage, In always
Low impedance path is formed between CC1 or CC2 pin and ground, accelerates the chemical attack of CC1 or CC2 pin, influences equipment insertion detection,
Cause to judge by accident.
Example IV
Fig. 6 is a kind of structural block diagram for mobile terminal that the embodiment of the present invention four provides, mobile terminal 1000 shown in fig. 6
It include: at least one processor 1001, memory 1002, at least one network interface 1004, circuit protection module 1006 and use
Family interface 1003.Various components in mobile terminal 1000 are coupled by bus system 1005.It is understood that bus system
1005 for realizing the connection communication between these components.Bus system 1005 further includes power supply in addition to including data/address bus
Bus, control bus and status signal bus in addition.But for the sake of clear explanation, various buses are all designated as bus in Fig. 6
System 1005.
Wherein, user interface 1003 may include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch screen etc..
It is appreciated that the memory 1002 in the embodiment of the present invention can be volatile memory or non-volatile memories
Device, or may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory
(Read-Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), erasable programmable are only
Read memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM,
) or flash memory EEPROM.Volatile memory can be random access memory (Random Access Memory, RAM), use
Make External Cache.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random-access
Memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random-access
Memory (Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data
Rate SDRAM, DDRSDRAM), it is enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronous
Connect dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus random access memory
(Direct Rambus RAM, DRRAM).The embodiment of the present invention description system and method memory 1002 be intended to include but
It is not limited to the memory of these and any other suitable type.
In some embodiments, memory 1002 stores following element, executable modules or data structures, or
Their subset of person or their superset: operating system 10021 and application program 10022.
Wherein, operating system 10021 include various system programs, such as ccf layer, core library layer, driving layer etc., are used for
Realize various basic businesses and the hardware based task of processing.Application program 10022 includes various application programs, such as matchmaker
Body player (Media Player), browser (Browser) etc., for realizing various applied business.Realize that the present invention is implemented
The program of example method may be embodied in application program 10022.
In embodiments of the present invention, by the program or instruction of calling memory 1002 to store, specifically, can be application
The program or instruction stored in program 10022, processor 1001 are used to detect the voltage value of the analog-digital converter ADC；Foundation
The voltage value generates power-on and power-off instruction；CC1 pin or CC2 to the Type-C interface is instructed to draw according to the power-on and power-off
Foot powers on or lower electricity.
The method that the embodiments of the present invention disclose can be applied in processor 1001, or real by processor 1001
It is existing.Processor 1001 may be a kind of IC chip, the processing capacity with signal.During realization, the above method
Each step can be completed by the instruction of the integrated logic circuit of the hardware in processor 1001 or software form.Above-mentioned
Processor 1001 can be general processor, digital signal processor (Digital Signal Processor, DSP), dedicated
Integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor is also possible to any conventional processor etc..In conjunction with institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware in decoding processor
And software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only
In the storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The storage medium is located at
The step of memory 1002, processor 1001 reads the information in memory 1002, completes the above method in conjunction with its hardware.
Circuit protection module 1006 is used for when Type-C interface has equipment access, detects the voltage of analog-digital converter ADC
Value, and the voltage value is sent to processor 1001.
It is understood that the embodiment of the present invention description these embodiments can with hardware, software, firmware, middleware,
Microcode or combinations thereof is realized.For hardware realization, processing unit be may be implemented in one or more specific integrated circuits
(Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal
Processing, DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable
Logic Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general place
It manages in device, controller, microcontroller, microprocessor, other electronic units for executing herein described function or combinations thereof.
For software implementations, can by execute the embodiment of the present invention described in function module (such as process, function etc.) come
Realize technology described in the embodiment of the present invention.Software code is storable in memory and is executed by processor.Memory can
With portion realizes in the processor or outside the processor.
Preferably, processor 1001 is also used to: when having detected that peripheral equipment is accessed by CC1 pin, if the electricity
Pressure value is less than or equal to the first predeterminated voltage thresholding, then generates and power on instruction for the first of the CC1 pin；When having detected
When peripheral equipment is accessed by CC2 pin, if the voltage value is less than or equal to the second predeterminated voltage thresholding, generates and be directed to institute
State CC2 pin second powers on instruction；If the voltage value is less than greater than the first predeterminated voltage thresholding or the second predeterminated voltage door
In limited time, then lower electricity instruction is generated
Preferably, processor 1001 is also used to: according to instruction is powered on, being controlled the CC logic processor and is drawn to the CC1
Foot or CC2 pin power on；According to lower electricity instruction, the CC logic processor is controlled under the CC1 pin or CC2 pin
Electricity.
Mobile terminal 1000 can be realized each process that mobile terminal is realized in the embodiment of the method for Fig. 4, to avoid weight
Multiple, which is not described herein again.
The mobile terminal 1000 of the embodiment of the present invention, by the voltage value for detecting analog-digital converter ADC；It is raw according to voltage value
It is instructed at power-on and power-off；CC1 pin or CC2 pin to Type-C interface is instructed to power on or lower electricity according to power-on and power-off, application
The embodiment of the present invention can determine whether that equipment accesses according to voltage value by the voltage value of detection analog-digital converter ADC
Type-C interface is just powered on to CC1 pin or CC2 pin when determining has equipment access, is solved on mother's Type-C mouth
The problem of CC1 or CC2 pin charges always can be effectively prevented CC1 or CC2 pin and charge always between meeting and ground in the presence of electricity
Pressure forms low impedance path between CC1 or CC2 pin and ground, accelerates the chemical attack of CC1 or CC2 pin, influences equipment insertion
Detection, causes to judge by accident.
Embodiment five
Fig. 7 is a kind of structural schematic diagram for mobile terminal that the embodiment of the present invention five provides.Specifically, the movement in Fig. 7
Terminal 1100 can be mobile phone, tablet computer, personal digital assistant (Personal Digital Assistant, PDA) or vehicle
Carry computer etc..
Mobile terminal 1100 in Fig. 7 includes radio frequency (Radio Frequency, RF) circuit 1101, memory 1102, defeated
Enter unit 1103, display unit 1104, circuit protection module 1105, processor 1106, voicefrequency circuit 1107, WiFi
(Wireless Fidelity) module 1108 and power supply 1109.
Wherein, input unit 1103 can be used for receiving the number or character information of user's input, and generate with movement eventually
The related signal input of the user setting and function control at end 1100.Specifically, in the embodiment of the present invention, the input unit
1103 may include touch panel 11031.Touch panel 11031, also referred to as touch screen collect user on it or nearby
Touch operation (for example user uses the operations of any suitable object or attachment on touch panel 11031 such as finger, stylus),
And corresponding attachment device is driven according to preset formula.Optionally, touch panel 11031 may include touch detecting apparatus
With two parts of touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation bring
Signal transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and it is converted
At contact coordinate, then the processor 1106 is given, and order that processor 1106 is sent can be received and executed.In addition, can
To realize touch panel 11031 using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves.In addition to touch surface
Plate 11031, input unit 1103 can also include other input equipments 11032, other input equipments 11032 may include but not
It is limited to one of physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc.
Or it is a variety of.
Wherein, display unit 1104 can be used for showing information input by user or be supplied to the information and movement of user
The various menu interfaces of terminal 1100.Display unit 1104 may include display panel 11041, optionally, using LCD or can have
The forms such as machine light emitting diode (Organic Light-Emitting Diode, OLED) configure display panel 11041.
It should be noted that touch panel 11031 can cover display panel 11041, touch display screen is formed, when the touch is shown
After screen detects touch operation on it or nearby, processor 1106 is sent to determine the type of touch event, is then located
It manages device 1106 and provides corresponding visual output in touch display screen according to the type of touch event.
Touch display screen includes Application Program Interface viewing area and common control viewing area.The Application Program Interface viewing area
And arrangement mode of the common control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish two it is aobvious
Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with
The interface elements such as the icon comprising at least one application program and/or widget desktop control.The Application Program Interface viewing area
Or the empty interface not comprising any content.This commonly uses control viewing area for showing the higher control of utilization rate, for example,
Application icons such as button, interface number, scroll bar, phone directory icon etc. are set.
Wherein processor 1106 is the control centre of mobile terminal 1100, utilizes various interfaces and connection whole mobile phone
Various pieces, by running or execute the software program and/or module that are stored in first memory 11021, and call
The data being stored in second memory 11022 execute the various functions and processing data of mobile terminal 1100, thus to movement
Terminal 1100 carries out integral monitoring.Optionally, processor 1106 may include one or more processing units.
Circuit protection module 1105 is used for when Type-C interface has equipment access, detects the voltage of analog-digital converter ADC
Value, and the voltage value is sent to processor 1106.
In embodiments of the present invention, by calling the software program and/or module that store in the first memory 11021
And/or the data in the second memory 11022, processor 1106 are used to detect the voltage value of the analog-digital converter ADC；According to
Power-on and power-off instruction is generated according to the voltage value；It instructs according to the power-on and power-off to the CC1 pin or CC2 of the Type-C interface
Pin powers on or lower electricity.
Preferably, processor 1106 is also used to: when having detected that peripheral equipment is accessed by CC1 pin, if the electricity
Pressure value is less than or equal to the first predeterminated voltage thresholding, then generates and power on instruction for the first of the CC1 pin；When having detected
When peripheral equipment is accessed by CC2 pin, if the voltage value is less than or equal to the second predeterminated voltage thresholding, generates and be directed to institute
State CC2 pin second powers on instruction；If the voltage value is less than greater than the first predeterminated voltage thresholding or the second predeterminated voltage door
In limited time, then lower electricity instruction is generated.
Preferably, processor 1106 is also used to: according to instruction is powered on, being controlled the CC logic processor and is drawn to the CC1
Foot or CC2 pin power on；According to lower electricity instruction, the CC logic processor is controlled under the CC1 pin or CC2 pin
Electricity.
Mobile terminal 1100 can be realized each process that mobile terminal is realized in previous embodiment, to avoid repeating, this
In repeat no more.
The mobile terminal 1100 of the embodiment of the present invention, by the voltage value for detecting analog-digital converter ADC；It is raw according to voltage value
It is instructed at power-on and power-off；CC1 pin or CC2 pin to Type-C interface is instructed to power on or lower electricity according to power-on and power-off, application
The embodiment of the present invention can determine whether that equipment accesses according to voltage value by the voltage value of detection analog-digital converter ADC
Type-C interface is just powered on to CC1 pin or CC2 pin when determining has equipment access, is solved on mother's Type-C mouth
The problem of CC1 or CC2 pin charges always can be effectively prevented CC1 or CC2 pin and charge always between meeting and ground in the presence of electricity
Pressure forms low impedance path between CC1 or CC2 pin and ground, accelerates the chemical attack of CC1 or CC2 pin, influences equipment insertion
Detection, causes to judge by accident.
Those of ordinary skill in the art may be aware that the embodiment in conjunction with disclosed in the embodiment of the present invention describe it is each
Exemplary unit and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In embodiment provided herein, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling or direct-coupling or call connection can be through some interfaces, the INDIRECT COUPLING of device or unit or call connect
It connects, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, ROM, RAM, magnetic or disk etc. are various can store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (8)
1. a kind of Type-C interface protective circuit, the Type-C interface has CC1 pin and CC2 pin, which is characterized in that institute
Stating circuit includes:
Voltage module is detected, for detecting the voltage value for being input to the analog-digital converter ADC of controller；
Controller, for generating power-on and power-off instruction according to the voltage value of the analog-digital converter ADC；
CC logic processor powers on or lower electricity for being instructed according to the power-on and power-off to the CC1 pin or CC2 pin；
The controller is also used to preset the voltage value of the analog-digital converter ADC with the first predeterminated voltage thresholding and second
Thresholding is compared, if the voltage value of the analog-digital converter ADC is less than the first predeterminated voltage thresholding and second and presets
Thresholding, then generate CC pin powers on instruction；
The detection voltage module includes: the first power supply, second source, first resistor, second resistance, 3rd resistor and the 4th electricity
Resistance, wherein
The CC1 pin is connected with one end of first resistor, the other end of the first resistor and the analog-digital converter ADC and
One end of 4th resistance connects, and the other end of the 4th resistance is connected with first power supply；
The CC2 pin is connect with second resistance, the second resistance and the analog-digital converter ADC and the 3rd resistor
One end connection, the other end of the 3rd resistor are connected with the second source.
2. circuit according to claim 1, which is characterized in that when peripheral equipment accesses Type-C interface, the CC1 draws
Foot and CC2 pin be connected to peripheral equipment to ground resistance, the first resistor, second resistance, 3rd resistor and the 4th resistance
Resistance value meet following condition:
Wherein, R1For the resistance value of first resistor, R2For the resistance value of second resistance, R3For the resistance value of 3rd resistor, R4It is
The resistance value of four resistance, RdFor the resistance value to ground resistance, VADC1For the first predeterminated voltage thresholding, VADC2For the second predeterminated voltage
Thresholding, the first predeterminated voltage thresholding are less than or equal to the second predeterminated voltage thresholding.
3. a kind of method of Type-C interface protection is applied to include such as Type-C interface protection electricity claimed in claims 1-2
The mobile terminal on road, the Type-C interface protective circuit have analog-digital converter ADC, which is characterized in that the described method includes:
Detect the voltage value of the analog-digital converter ADC；
Power-on and power-off instruction is generated according to the voltage value；
CC1 pin or CC2 pin to the Type-C interface is instructed to power on or lower electricity according to the power-on and power-off.
4. according to the method described in claim 3, it is characterized in that, the first predeterminated voltage thresholding is less than or equal to second in advance
If voltage threshold；It is described according to the voltage value generate power-on and power-off instruction the step of include:
When having detected that peripheral equipment is accessed by CC1 pin, if the voltage value is less than or equal to the first predeterminated voltage door
Limit then generates and powers on instruction for the first of the CC1 pin；
When having detected that peripheral equipment is accessed by CC2 pin, if the voltage value is less than or equal to the second predeterminated voltage door
Limit then generates and powers on instruction for the second of the CC2 pin；
If the voltage value is greater than the first predeterminated voltage thresholding and is less than or when the second predeterminated voltage thresholding, generates lower electricity instruction.
5. according to the method described in claim 4, it is characterized in that, the Type-C interface protective circuit includes CC logical process
Device, it is described to instruct CC1 pin or CC2 pin to the Type-C interface to power on or the step of lower electricity according to the power-on and power-off
Suddenly include:
According to instruction is powered on, controls the CC logic processor and powered on to the CC1 pin or CC2 pin；
According to lower electricity instruction, the CC logic processor is controlled to electricity under the CC1 pin or CC2 pin.
6. a kind of mobile terminal, the mobile terminal includes Type-C interface protective circuit, the Type-C interface protective circuit
With analog-digital converter ADC, which is characterized in that the mobile terminal further include:
Detection module, for obtaining the voltage value of the analog-digital converter ADC；
Power-on and power-off directive generation module, for generating power-on and power-off instruction according to the voltage value；
Power-on and power-off module, for instructing CC1 pin or CC2 pin to the Type-C interface to power on according to the power-on and power-off
Or lower electricity；
The power-on and power-off directive generation module is also used to the voltage value of the analog-digital converter ADC with the first predeterminated voltage door
Limit and the second pre-determined threshold are compared, if the voltage value of the analog-digital converter ADC is less than the first predeterminated voltage door
Limit and the second pre-determined threshold, then generate CC pin powers on instruction；
The Type-C interface protective circuit, further includes: the first power supply, second source, first resistor, second resistance, third electricity
Resistance and the 4th resistance, wherein the CC1 pin of the Type-C interface is connected with one end of first resistor, first resistor it is another
End is connect with one end of the analog-digital converter ADC of controller and the 4th resistance, and the other end of the 4th resistance is connected with the first power supply,
The CC2 pin of Type-C interface is connect with second resistance, the analog-digital converter ADC of second resistance and controller and 3rd resistor
One end connection, the other end of 3rd resistor are connected with second source.
7. mobile terminal according to claim 6, which is characterized in that the power-on and power-off directive generation module includes:
First instruction generate submodule, for when detected peripheral equipment by CC1 pin access when, if the voltage value is small
In or equal to the first predeterminated voltage thresholding, then generates and power on instruction for the first of the CC1 pin；
Second instruction generate submodule, for when detected peripheral equipment by CC2 pin access when, if the voltage value is small
In or equal to the second predeterminated voltage thresholding, then generates and power on instruction for the second of the CC2 pin；
Third instruction generates submodule, is less than or the second predeterminated voltage if being greater than the first predeterminated voltage thresholding for the voltage value
When thresholding, then lower electricity instruction is generated.
8. mobile terminal according to claim 7, which is characterized in that the Type-C interface protective circuit includes CC logic
Processor, the power-on and power-off module include:
Upper electronic module, for according to instruction is powered on, controlling the CC logic processor to the CC1 pin or CC2 pin
It powers on；
Lower electronic module, for controlling the CC logic processor to the CC1 pin or CC2 pin according to lower electricity instruction
Lower electricity.
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| CN201611263864.8A CN108268388B (en) | 2016-12-30 | 2016-12-30 | A kind of Type-C interface protective circuit and method, mobile terminal |
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| CN201611263864.8A CN108268388B (en) | 2016-12-30 | 2016-12-30 | A kind of Type-C interface protective circuit and method, mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020024116A1 (en) * | 2018-07-31 | 2020-02-06 | 华为技术有限公司 | Interface configuration method, terminal device and interface |
| CN108879872A (en) * | 2018-08-04 | 2018-11-23 | 北京航星中云科技有限公司 | A kind of discharge protector and method of Type-C interface |
| CN109977057B (en) * | 2019-03-27 | 2022-04-12 | 青岛海信移动通信技术股份有限公司 | Interface device and control method thereof |
| CN110990320B (en) * | 2019-12-09 | 2021-03-12 | 无锡睿勤科技有限公司 | Identification system of Type-C interface |
| CN115575452B (en) * | 2022-02-25 | 2024-03-26 | 荣耀终端有限公司 | Liquid inlet detection circuit and electronic equipment |
| CN114264423B (en) * | 2022-03-03 | 2022-07-05 | 荣耀终端有限公司 | Liquid inlet detection control method and electronic equipment |
| CN116962953B (en) * | 2023-09-21 | 2024-07-26 | 荣耀终端有限公司 | Equipment connection detection circuit, audio channel switching method and electronic equipment |
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