CN110442541A - Terminal device and USB interface-based data transmission method - Google Patents
Terminal device and USB interface-based data transmission method Download PDFInfo
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- CN110442541A CN110442541A CN201910857925.0A CN201910857925A CN110442541A CN 110442541 A CN110442541 A CN 110442541A CN 201910857925 A CN201910857925 A CN 201910857925A CN 110442541 A CN110442541 A CN 110442541A
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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
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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Abstract
The present invention discloses a kind of terminal device and USB interface-based data transmission method.The terminal device includes: USB interface, the first USB switch, the 2nd USB switch, first control unit and the second control unit；Wherein, terminal device is connect by USB interface with external equipment；First USB switch is connect with USB interface, the 2nd USB switch and first control unit respectively, for providing the first transmission channel between USB interface and first control unit or providing the second transmission channel between USB interface and the 2nd USB switch；2nd USB switch is connect with first control unit and the second control unit respectively, for by the second transmission channel, providing the third transmission channel between USB interface and first control unit or the 4th transmission channel between offer USB interface and the second control unit.
Description
Technical field
The present invention relates to terminal device technologies, pass in particular to a kind of terminal device and USB interface-based data
Transmission method.
Background technique
The data line D+/D- of the USB interface of terminal device (such as smart phone, IPAD) may be coupled to terminal device
Application processor (Application Processor, AP), to provide the biography of the data between external equipment and application processor
It is defeated.In addition, application processor also supports universal asynchronous receiving-transmitting transmitter (Universal Asynchronous Receiver/
Transmitter, UART) AccessPort function, it can be by the universal input and output of correspondence (General-purpose input/
Output, GPIO) hardware device by data line D+/D- connecting test point carry out AccessPort.Also, supporting quick charge
Terminal device in, it is also necessary to the Handshake Protocol of quick charge is carried out by data line D+/D- and power supply adaptor, with determine with
The type of its connected adapter.
And since the data line D+/D- of USB interface only has one, since data line D+/D- may be occupied, and can not be real
Existing above-mentioned different functions.
Above- mentioned information are only used for reinforcing the understanding to background of the invention, therefore it disclosed in the background technology part
It may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
In view of this, the present invention provides a kind of terminal device and USB interface-based data transmission method.
Other characteristics and advantages of the invention will be apparent from by the following detailed description, or partially by the present invention
Practice and acquistion.
According to an aspect of the present invention, a kind of terminal device is provided, comprising: USB interface, the first USB switch, the 2nd USB
Switch, first control unit and the second control unit；Wherein, the terminal device is connected by the USB interface and external equipment
It connects；The first USB switch is connect with USB interface, the 2nd USB switch and the first control unit respectively, for mentioning
For the first transmission channel between the USB interface and the first control unit or provide the USB interface and described second
The second transmission channel between USB switch；The 2nd USB switch is controlled with the first control unit and described second respectively
Unit connection, for providing the third between the USB interface and the first control unit by second transmission channel
The 4th transmission channel between transmission channel or the offer USB interface and second control unit.
According to an embodiment of the present invention, the first control unit is the application processor of the terminal device.
According to an embodiment of the present invention, first transmission channel is for the external equipment and first control
Data communication between unit.
According to an embodiment of the present invention, the third transmission channel is for the universal asynchronous of the first control unit
The AccessPort of receiving-transmitting transmitter.
According to an embodiment of the present invention, second control unit is the charging control circuit of the terminal device,
The external equipment provides device for power supply, and the 4th transmission channel is provided for the charging control circuit and the power supply
Data communication between device.
According to an embodiment of the present invention, the first control unit provides institute for controlling the first USB switch
The first transmission channel or second transmission channel are stated, and/or control the 2nd USB switch provides the third transmission channel
Or the 4th transmission channel.
According to an embodiment of the present invention, the USB interface is minitype USB interface.
According to an embodiment of the present invention, the USB interface is USB Type C interface, the terminal device further include:
3rd USB switch and audio codec；3rd USB switch respectively with the USB interface, the audio codec and
First USB switch connection, the 5th transmission channel being used to provide the described between USB interface and the audio codec or
The 6th transmission channel between the USB interface and the first USB switch is provided；5th transmission channel is for described outer
Audio data transmission between portion's equipment and the audio codec.
According to another aspect of the present invention, a kind of USB interface-based data transmission method is provided, above-mentioned terminal is applied to
In equipment, comprising: by the first transmission channel in the terminal device, connect with by USB interface with the terminal device
External equipment transmit data；According to the content of transmission data, the type of the external equipment is detected；And according to the outside
The type of equipment controls the first USB switch and the 2nd USB switch in the terminal device.
According to an embodiment of the present invention, according to the type of the external equipment, in the terminal device is controlled
One USB switch and the 2nd USB switch include: to control the first USB switch when the external equipment is data communications equipment
First transmission channel is provided；When the external equipment is AccessPort equipment, the first USB switch and described is controlled
2nd USB switch provides the third transmission channel in the terminal device；When the external equipment provides device for power supply, control
The 4th transmission channel in the first USB switch and the 2nd USB switch offer terminal device is provided.
In accordance with a further aspect of the present invention, a kind of USB interface-based data transmission method is provided, is applied to according to above-mentioned
In terminal device, comprising: by the first transmission channel in the terminal device, and pass through USB interface and the terminal device
The external equipment of connection transmits data；According to the content of transmission data, the type of the external equipment is detected；And according to described
The type of external equipment controls the 3rd USB switch in the terminal device, the first USB switch and the 2nd USB and opens
It closes.
According to an embodiment of the present invention, according to the type of the external equipment, in the terminal device is controlled
Three USB switch, the first USB switch and the 2nd USB switch include: when the external equipment provides device for audio
When, the 5th transmission channel in the 3rd USB switch offer charging equipment is provided；When the external equipment is data
When communication equipment, controls the 3rd USB switch and the first USB switch provides first transmission channel；When described outer
When portion's equipment is AccessPort equipment, controls the 3rd USB switch, the first USB switch and the 2nd USB switch and mention
For the third transmission channel in the terminal device；When the external equipment provides device for power supply, the 3rd USB is controlled
Switch, the first USB switch and the 2nd USB switch provide the 4th transmission channel in the terminal device.
In accordance with a further aspect of the present invention, a kind of computer readable storage medium is provided, being stored thereon with computer can hold
Row instruction, realizes such as any one of the above method when the executable instruction is executed by processor.
The terminal device that embodiment provides according to the present invention, providing one kind can be with the more of multiplexing USB data line D+/D-
Functional switch switching circuit, can more flexible ground using terminal equipment USB interface, while meet data communication,
The multiple functions such as UART serial ports mode, power supply adaptor type negotiation.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Invention.
Detailed description of the invention
Its example embodiment is described in detail by referring to accompanying drawing, above and other target of the invention, feature and advantage will
It becomes more fully apparent.
Fig. 1 is a kind of block diagram of terminal device shown according to an illustrative embodiments.
Fig. 2 is the block diagram of another terminal device shown according to an illustrative embodiments.
Fig. 3 is a kind of flow chart of USB interface-based data transmission method shown according to an illustrative embodiments.
Fig. 4 is the process according to the USB interface-based data transmission method of another kind shown in an illustrative embodiments
Figure.
Fig. 5 is a kind of schematic diagram of computer readable storage medium shown according to an illustrative embodiments.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the present invention will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Attached drawing is only the present invention
Schematic illustrations, be not necessarily drawn to scale.Identical appended drawing reference indicates same or similar part in figure, thus
Repetition thereof will be omitted.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In mode.In the following description, many details are provided to provide and fully understand to embodiments of the present invention.So
And it will be appreciated by persons skilled in the art that technical solution of the present invention can be practiced and omit one in the specific detail
Or more, or can be using other methods, constituent element, device, step etc..In other cases, it is not shown in detail or describes
Known features, method, apparatus, realization or operation are to avoid a presumptuous guest usurps the role of the host and each aspect of the present invention is made to thicken.
In the present invention unless specifically defined or limited otherwise, the terms such as term " connected ", " connection " should do broad sense reason
Solution, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connection, be also possible to electricity
Connection can be with communication connection；It can be directly connected, can also can also be two elements indirectly connected through an intermediary
The interaction relationship of internal connection or two elements.It for the ordinary skill in the art, can be according to specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
In addition, in the description of the present invention, "and/or" describes the incidence relation of affiliated partner, indicate may exist three kinds
Relationship, such as A and/or B can indicate individualism A, individualism B and exist simultaneously tri- kinds of situations of A and B.Symbol "/" one
As indicate forward-backward correlation object be a kind of "or" relationship.Term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include one or more of the features.
Fig. 1 is a kind of block diagram of terminal device shown according to an illustrative embodiments.
Terminal device 10 as shown in Figure 1 for example can be terminal or communication terminal, the terminal or communication terminal include but
It is not limited to be configured to connect via Wireline, such as via Public Switched Telephone Network (public switched
Telephone network, PSTN), it is digital subscriber line (digital subscriber line, DSL), digital cable, straight
Connect cable connection and/or another data connection/network and/or via for example, for cellular network, WLAN
(wireless local area network, WLAN), such as hand-held digital video broadcast (digital video
Broadcasting handheld, DVB-H) network digital TV network, satellite network, AM/FM amplitude modulation/frequency modulation (amplitude
Modulation-frequency modulation, AM-FM) broadcasting transmitter and/or another communication terminal wirelessly connect
Mouth reception/transmission signal of communication device.It is configured to that " channel radio can be referred to as by the communication terminal of radio interface communication
Letter terminal ", " wireless terminal " and/or " mobile terminal ".The example of mobile terminal includes, but are not limited to satellite or honeycomb electricity
Words；It can be with the PCS Personal Communications System of combination cellular radio telephone and data processing, fax and communication ability
(personal communication system, PCS) terminal；It may include radio telephone, pager, internet/inline
Net access, Web browser, memo pad, calendar and/or global positioning system (global positioning system,
GPS) the personal digital assistant (Personal Digital Assistant, PDA) of receiver；And conventional laptop and/or
Palmtop receiver or other electronic devices including radiotelephone transceiver.In addition, the terminal can also include but unlimited
In equipment such as E-book reader, intelligent wearable devices.
With reference to Fig. 1, terminal device 10 includes: usb 1 01, the first USB switch 102, the 2nd USB switch 103, first
Control unit 104 and the second control unit 105.
Wherein, terminal device 10 is connect by usb 1 01 with external equipment 1.
Usb 1 01 for example can be 2.0 interface of USB, micro USB (Micro USB) interface or Type C (TYPE-C)
Interface.In some embodiments, usb 1 01 can also be lightning interface or the serial ports of any other type.
First USB switch 102 is connect with usb 1 01, the 2nd USB switch 103 and first control unit 104 respectively, is used
The first transmission channel S1 between offer usb 1 01 and first control unit 104, or usb 1 01 and second is provided
The second transmission channel S2 between USB switch 103.
2nd USB switch 103 is connect with first control unit and the second control unit respectively, for logical by the second transmission
Road S2, provides the third transmission channel S3 between usb 1 01 and first control unit 104, or provides usb 1 01 and the
The 4th transmission channel S4 between two control units.
In some embodiments, first control unit 104 for example can be the application processor of terminal device 10.
First USB switch 102 such as may include first end P11, second end P12 and third end P13.First USB switch 102
It is connect by its first end P11 with usb 1 01, is connect by its second end P12 and the data transmission of first control unit 104
Mouth I1 (such as can be BC1.2 interface) is connected, and is connect by its third end P13 with the 2nd USB switch 103.
Wherein, data, the first USB switch 102 and the first control transmitted between usb 1 01 and the first USB switch 102
Between the data and the first USB switch 102 and the 2nd USB switch 103 transmitted between the data transmission interface I1 of unit 104 processed
The data of transmission, such as it is based on USB D+/D- protocol communication.
Wherein, the data transmission interface I1 of the first transmission channel S1 connection usb 1 01 and first control unit 104, is used
Data communication between external equipment 1 and first control unit 104.
Second transmission channel S2 connection usb 1 01 and the 2nd USB switch 103.
2nd USB switch 103 is as equally may include first end P21, second end P22 and third end P23.2nd USB is opened
It closes 103 to connect by its first end P21 and the first USB switch, passes through the UART of its second end P22 and first control unit 104
Interface I2 connection is connect by its third end P23 with the second control unit 105.
Wherein, the data example transmitted between the 2nd USB switch unit 103 and the UART interface I2 of first control unit 104
Such as it is based on UART RX/TX protocol communication.
Wherein, pass through the second transmission channel S2, third transmission channel S3 connection usb 1 01 and first control unit 104
UART interface I2, the AccessPort of the UART for first control unit.
By the second transmission channel S2, the 4th transmission channel S4 connection usb 1 01 and the second control unit 105 are used for
Data communication between second control unit 105 and external equipment 1.In some embodiments, external equipment 1 be, for example, and terminal
Equipment 10 provides device (such as power supply adaptor, mobile power source equipment) by the power supply that cable is connected, by cable by power supply
The electric energy that device provides is provided and is transmitted to terminal device 10, for the charging of terminal device 10.
Second control unit 105 for example can be the charging control circuit of terminal device 10, for example micro-control unit
(Micro Control Unit, MCU).The data example transmitted between 2nd USB switch unit 103 and the second control unit 105
MCU D+/D- protocol communication can be such as based on.
In the related art, charging system can usually provide two kinds of " normal charging mode " and " fast charge mode " and fill
Power mode.Normal charging mode refers to that adapter exports relatively small current value (usually less than 2.5A) or with relatively small
Power (usually less than 15W) charge to the battery in charging equipment.Want to fill completely under normal charging mode
Full a larger capacity batteries (such as batteries of 3000 milliampere hour capacity), it usually needs spend several hours time.Quick charge
Mode then refer to adapter can export relatively large electric current (typically larger than 2.5A, such as 4.5A, 5A are even higher) or
It is charged with relatively large power (typically larger than be equal to 15W) to the battery in charging equipment.Compared to commonly filling
For power mode, charging rate of the adapter under fast charge mode faster, is completely filled with required for identical capacity batteries
Charging time can be obviously shortened.
It can be general type adapter that power supply, which provides device, and for example, peak power output is 10W (5V/2A), uses
Above-mentioned normal charging mode is the power supply adaptor that charging equipment charges；Alternatively, power supply, which provides device, to be the
One type quick charge adapter, for example, peak power output be 20W (5V/4A), use above-mentioned fast charge mode for
The large power supply adapter that charging equipment charges；Again alternatively, it can also be that Second Type is quick that power supply, which provides device,
The High Power Adapter of charging adapter, for example, 50W (10V/5A), uses above-mentioned fast charge mode for charging equipment
It charges.
In order to determine that power supply provides the type of device, it usually needs pass through USB data line D+/D- and the second control unit
105 are communicated, such as handshake communication, provide the type of device to negotiate power supply, determine whether to open above-mentioned quick
Charge mode.
In practical applications, the first USB switch 102 can be according to corresponding USB interface with the type selecting of the 2nd USB switch 103
Communication protocol selected, invention is not limited thereto.
In some embodiments, for example, can be controlled by first control unit 104 the first USB switch 102 provide first
Transmission channel S1 provides the second transmission channel S2, and/or the 2nd USB switch 103 of control offer third transmission channel S3 or the
Four transmission channel S4.
Such as at the beginning, the first USB switch 102 can default conducting usb 1 01 and first control unit 104 it
Between the first transmission channel S1.In practical applications, such as the VBUS bleeder circuit in terminal device 10 can be connected to first
The enabled foot of USB switch 102, the first USB switch 102 of Lai Shixian default conducting usb 1 01 and first control unit 104 it
Between the first transmission channel S1.It is logical by the first transmission after external equipment 1 is connect by usb 1 01 with terminal device 10
Road S1 is communicated with first control unit 104, and first control unit 104 can remove identification external equipment according to existing related protocol
1 type is that data communications equipment (such as personal computer equipment) or AccessPort equipment or power supply provide device (such as electricity
Source adapter) etc..
Alternatively, can also be by the power management integrated circuit (Power Management IC, PMIC) in terminal device 10
There is provided the first transmission channel S1 or offer the second transmission channel S2 to control the first USB switch 102, and/or the 2nd USB of control is opened
It closes 103 and third transmission channel S3 or the 4th transmission channel S4 is provided.
The terminal device that embodiment provides according to the present invention, providing one kind can be with the more of multiplexing USB data line D+/D-
Functional switch switching circuit, can more flexible ground using terminal equipment USB interface, while meet data communication,
The multiple functions such as UART serial ports mode, power supply adaptor type negotiation.
It will be clearly understood that the present disclosure describe how being formed and using particular example, but the principle of the present invention is not limited to
These exemplary any details.On the contrary, the introduction based on present disclosure, these principles can be applied to many other
Embodiment.
Fig. 2 is the block diagram of another terminal device shown according to an illustrative embodiments.
Compared to terminal device 10 shown in FIG. 1, terminal device 20 shown in Fig. 2 be can further include: the 3rd USB
Switch 201 and audio codec 202.
In order to support that audio data transfer function, usb 1 01 are, for example, the TYPE-C that audio data can be supported to transmit
Interface.
As shown in Fig. 2, the 3rd USB switch 201 is switched with usb 1 01, audio codec 202 and the first USB respectively
102 connections, for providing the 5th transmission channel S5 between usb 1 01 and audio codec 202 or providing USB interface
101 and the first the 6th transmission channel S6 between USB switch 102.
Wherein the 5th transmission channel S5 is for the sound between external equipment 1 (such as audio frequency apparatus) and audio codec 202
Frequency is according to transmission.
It should be noted that first transmission channel S1 need to pass through the 6th transmission channel in terminal device 20 shown in Fig. 2
S6 provides the connection between usb 1 01 and the data transmission interface I1 of first control unit 104, and the second transmission channel S2 is needed
The connection between usb 1 01 and the 2nd USB switch 103 is provided by the 6th transmission channel S6, third transmission channel S3 need to lead to
Cross the 6th transmission channel S6, the second transmission channel S2 provide usb 1 01 and first control unit 104 UART interface I2 it
Between connection, the 4th transmission channel S4 then need by the 6th transmission channel S6, the second transmission channel S2 provide usb 1 01 with
Connection between second control unit 105.
3rd USB switch 201 such as may include first end P31, second end P32 and third end P33.3rd USB switch 201
Connect by its first end P31 with usb 1 01, connect by its second end P32 with audio codec 202, by its
Three end P33 are connect with the first end P11 of the first USB switch 102.
Other connection types of first USB switch 102 and the 2nd USB switch 103 are identical as shown in Fig. 1, herein not
It repeats again.
The terminal device that embodiment provides according to the present invention, it is defeated can to further realize the audio based on USB TYPE-C
Function out.
It should be noted that above-mentioned block diagram shown in the drawings is functional entity, not necessarily must with physically or logically
Independent entity is corresponding.Can realize these functional entitys using software form, or in one or more hardware modules or
These functional entitys are realized in integrated circuit, or are realized in heterogeneous networks and/or processor device and/or microcontroller device
These functional entitys.
Following is embodiment of the present invention method, be can be applied in apparatus of the present invention embodiment.For the method for the present invention reality
Undisclosed details in example is applied, apparatus of the present invention embodiment is please referred to.
Fig. 3 is a kind of flow chart of USB interface-based data transmission method shown according to an illustrative embodiments.
USB interface-based data transmission method 30 shown in Fig. 3 such as can be applied in above-mentioned terminal device 10,
It is mainly used in first control unit 104, a kind of controlling party to the first USB switch 102, the 2nd USB switch 103 is provided
Method.
With reference to Fig. 3, USB interface-based data transmission method 30 includes:
In step s 302, it by the first transmission channel in terminal device, is connect with by USB interface with terminal device
External equipment transmit data.
In step s 304, according to the content of transmission data, the type of external equipment is detected.
In step S306, according to the type of external equipment, the first USB in controlling terminal equipment is switched and the 2nd USB
Switch.
In some embodiments, step S306 can further include: when external equipment is data communications equipment, control
It makes the first USB switch and the first transmission channel is provided；When external equipment is AccessPort equipment, the first USB of control switch and the
Two USB switch provides the third transmission channel in terminal device；When external equipment provides device for power supply, the first USB is controlled
Switch and the 2nd USB switch provide the 4th transmission channel in terminal device.
The USB interface-based data transmission method that embodiment provides according to the present invention, it is further provided how right
The control method of each USB switch in above-mentioned terminal device 10 or 20, so as to allow the USB interface of terminal device to use more
Add flexibly.
Fig. 4 is the process according to the USB interface-based data transmission method of another kind shown in an illustrative embodiments
Figure.
Similarly, USB interface-based data transmission method 40 shown in Fig. 4 such as can be applied to above-mentioned terminal device
In 20, which are mainly applied in first control unit 104, provide it is a kind of to the first USB switch 102, the 2nd USB switch 103 and
The control method of 3rd USB switch 201.
With reference to Fig. 4, USB interface-based data transmission method 40 includes:
In step S402, by the first transmission channel in terminal device, it is connect with by USB interface with terminal device
External equipment transmit data.
In step s 404, according to the content of transmission data, the type of external equipment is detected.
In step S406, according to the type of external equipment, the 3rd USB switch, the first USB in controlling terminal equipment are opened
It closes and the 2nd USB is switched.
In some embodiments, step S406 can further include: when external equipment provides device for audio, control
The 5th transmission channel in 3rd USB switch offer charging equipment is provided；When external equipment is data communications equipment, control the
Three USB switch and the first USB switch provide the first transmission channel；When external equipment is AccessPort equipment, the 3rd USB is controlled
Switch, the first USB switch and the 2nd USB switch provide the third transmission channel in terminal device；When external equipment mentions for power supply
When for device, it is logical that the 3rd USB of control switch, the first USB switch and the 2nd USB switch provide the 4th transmission in terminal device
Road.
It should be noted that above-mentioned attached drawing is only processing included by the method for illustrative embodiments according to the present invention
It schematically illustrates, rather than limits purpose.It can be readily appreciated that above-mentioned processing shown in the drawings does not indicate or limits these processing
Time sequencing.In addition, be also easy to understand, these processing, which can be, for example either synchronously or asynchronously to be executed in multiple modules.
Fig. 5 is a kind of schematic diagram of computer readable storage medium shown according to an illustrative embodiments.
Refering to what is shown in Fig. 5, describing the program product for being set as realizing the above method of embodiment according to the present invention
900, can using portable compact disc read only memory (CD-ROM) and including program code, and can in terminal device,
Such as it is run on smart phone, PC.However, program product of the invention is without being limited thereto, and in this document, readable storage
Medium can be any tangible medium for including or store program, which can be commanded execution system, device or device
Using or it is in connection.
Above-mentioned computer-readable medium carries one or more program, when said one or multiple programs are by one
When the equipment executes, so that the computer-readable medium realizes function as illustrated in fig. 1 or fig. 2.
It is particularly shown and described exemplary embodiments of the present invention above.It should be appreciated that the present invention is unlimited
In detailed construction described herein, set-up mode or implementation method；On the contrary, it is intended to cover included in appended claims
Spirit and scope in various modifications and equivalence setting.
Claims (13)
1. a kind of terminal device characterized by comprising USB interface, the first USB switch, the 2nd USB switch, the first control are single
Member and the second control unit；
Wherein, the terminal device is connect by the USB interface with external equipment；
The first USB switch is connect with USB interface, the 2nd USB switch and the first control unit respectively, for mentioning
For the first transmission channel between the USB interface and the first control unit or provide the USB interface and described second
The second transmission channel between USB switch；
The 2nd USB switch is connect with the first control unit and second control unit respectively, for by described
Second transmission channel provides the third transmission channel between the USB interface and the first control unit or provides the USB
The 4th transmission channel between interface and second control unit.
2. terminal device according to claim 1, which is characterized in that the first control unit is the terminal device
Application processor.
3. terminal device according to claim 2, which is characterized in that first transmission channel is used for the external equipment
With the data communication between the first control unit.
4. terminal device according to claim 2, which is characterized in that the third transmission channel is for first control
The AccessPort of the universal asynchronous receiving-transmitting transmitter of unit.
5. terminal device according to claim 2, which is characterized in that second control unit is the terminal device
Charging control circuit, the external equipment provide device for power supply, and the 4th transmission channel is used for the charging control circuit
The data communication between device is provided with the power supply.
6. terminal device according to claim 2, which is characterized in that the first control unit is for controlling described first
USB switch provides first transmission channel or second transmission channel, and/or control the 2nd USB switch provides institute
State third transmission channel or the 4th transmission channel.
7. terminal device according to claim 1, which is characterized in that the USB interface is minitype USB interface.
8. terminal device according to claim 1-6, which is characterized in that the USB interface is that USB Type C connects
Mouthful, the terminal device further include: the 3rd USB switch and audio codec；3rd USB switch respectively with the USB
Interface, the audio codec and the first USB switch connection, are used to provide the described USB interface and the audio is compiled and solved
The 6th transmission channel between the 5th transmission channel or the offer USB interface between code device and the first USB switch；Institute
The 5th transmission channel is stated for the audio data transmission between the external equipment and the audio codec.
9. a kind of USB interface-based data transmission method, sets applied to terminal according to claim 1-7
It is standby characterized by comprising
By the first transmission channel in the terminal device, set with the outside being connect by USB interface with the terminal device
Standby transmission data；
According to the content of transmission data, the type of the external equipment is detected；And
According to the type of the external equipment, the first USB switch and the 2nd USB switch in the terminal device are controlled.
10. according to the method described in claim 9, it is characterized in that, controlling the terminal according to the type of the external equipment
The first USB switch and the 2nd USB switch in equipment include:
When the external equipment is data communications equipment, controls the first USB switch and first transmission channel is provided；
When the external equipment is AccessPort equipment, controls the first USB switch and the 2nd USB switch provides institute
State the third transmission channel in terminal device；
When the external equipment provides device for power supply, controls the first USB switch and the 2nd USB switch provides institute
State the 4th transmission channel in terminal device.
11. a kind of USB interface-based data transmission method is applied to terminal device according to claim 8, feature
It is, comprising:
By the first transmission channel in the terminal device, set with the outside being connect by USB interface with the terminal device
Standby transmission data；
According to the content of transmission data, the type of the external equipment is detected；And
According to the type of the external equipment, control in the terminal device the 3rd USB switch, the first USB switch and
The 2nd USB switch.
12. according to the method for claim 11, which is characterized in that according to the type of the external equipment, control the end
The 3rd USB switch, the first USB switch and the 2nd USB switch in end equipment include:
When the external equipment provides device for audio, controls the 3rd USB switch and provide in the charging equipment
5th transmission channel；
When the external equipment is data communications equipment, controls the 3rd USB switch and the first USB switch provides institute
State the first transmission channel；
When the external equipment is AccessPort equipment, the 3rd USB switch is controlled, the first USB is switched and described
2nd USB switch provides the third transmission channel in the terminal device；
When the external equipment provides device for power supply, the 3rd USB switch is controlled, the first USB is switched and described
2nd USB switch provides the 4th transmission channel in the terminal device.
13. a kind of computer readable storage medium, is stored thereon with computer executable instructions, which is characterized in that described to hold
Row instruction realizes such as the described in any item methods of claim 9-12 when being executed by processor.
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Application publication date: 20191112 |