CN105867593B - A kind of USB Type-C interface circuits and its control device - Google Patents

A kind of USB Type-C interface circuits and its control device Download PDF

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Publication number
CN105867593B
CN105867593B CN201610326963.XA CN201610326963A CN105867593B CN 105867593 B CN105867593 B CN 105867593B CN 201610326963 A CN201610326963 A CN 201610326963A CN 105867593 B CN105867593 B CN 105867593B
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switch
level signal
pin
microprocessor
interfaces
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CN105867593A (en
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刘靖
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Shenzhen Huinengtai Semiconductor Technology Co Ltd
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Shenzhen Huinengtai Semiconductor Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3253—Power saving in bus
    • 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
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The present invention discloses a kind of USB Type-C interface circuits and its control device.Wherein the circuit includes：Power circuit, for exporting first voltage；Power controller for being connected with power circuit, and exports control signal and exports first voltage to control power circuit；Microprocessor, for being connect respectively with the first power pins of USB Type-C interfaces and power controller, and when USB Type-C interfaces do not connect equipment, receive the second voltage inputted from the first power pins of USB Type-C interfaces, exporting low level signal by the first Enable Pin makes USB detection devices be in standby, and exporting low level signal by the second Enable Pin makes power controller be in standby.The present invention by by under ideal case USB detection devices and power controller turn off, USB detection devices and power controller were without constantly work in 24 hours, to reduce whole circuit standby power consumption.

Description

A kind of USB Type-C interface circuits and its control device
Technical field
The present invention relates to USB technical fields more particularly to a kind of USB Type-C interface circuits and its control device.
Background technology
USB specification tissue discloses novel USB interface i.e. USB Type-C interfaces.This novel USBType-C connects Mouth has the characteristics that compared to old-fashioned USBType-A interfaces and USBType-B interfaces：1, the thinner smaller of connection size；2, number Faster according to transmission speed；3, transimission power ability is stronger；4, positive anti-plug is supported.
Referring to FIG. 1, the schematic diagram that the interface that Fig. 1 is USBType-C sockets defines.As shown in Figure 1, the interface is divided to two Row, each row have 12 signal pins.It is all the power supply VBUS of USB wherein to have 4 power pins, respectively A4, B4, A9 and B9.In addition it is all the ground GND of USB, respectively A1, B1, A12 and B12 to have 4 grounding pins.Two different USBType-C are inserted It is connected by Type-C connecting lines between seat.At the connecting line both ends of Type-C, there are one Type-C plugs respectively.USB A4, B4, A9 and B9 pin in Type-C plugs is joined together in connecting line, and A1, B1 in USB Type-C plugs, A12 and B12 pins are also joined together in connecting line.In addition, USB Type-C sockets also have CC1 and CC2 this two to draw Foot is respectively intended to do the detection of Type-C interfaces, for judging the information such as the direction of equipment connection and the type of equipment.
Inventor in the implementation of the present invention, it is found that the existing technology has at least the following problems：It usually supports this The equipment of interface is required for a special USB Type-C interface controller to detect the plugging condition of interface, is set for identifying It is standby whether to insert or pull out and the type of equipment.In order to realize this function, which needs one Directly lasting detection.24 hours on-line checkings always are wanted if even if being inserted into USB Type-C interface controllers without equipment, this The stand-by power consumption of USB Type-C interface controllers can undoubtedly be increased.In view of mobile device is all by interior in most times The battery powered set has the standby current of system itself and compares strict requirements.It is examined from the Energy Angle of mobile USB system Consider, these electric currents additionally consumed when standby all need to eliminate.
Invention content
In order to overcome above-mentioned technical problem, the object of the invention is intended to provide a kind of USB Type-C interface circuits and its control Device, to solve existing USB Type-C interface circuits or control device, there are the high technologies of power consumption to ask under ideal case Topic.
In order to solve the above technical problems, the embodiment of the present invention provides following technical scheme：
In a first aspect, the embodiment of the present invention provides a kind of USB Type-C interface circuits, the circuit includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal to control the power circuit Export the first voltage；
Microprocessor, for being connect respectively with the first power pins of USB Type-C interfaces and the power controller, And when USB Type-C interfaces do not connect external equipment, the first power pins from the USBType-C interfaces are received The second voltage of input, exporting low level signal by the first Enable Pin makes USB detection devices be in standby, and passes through second Enable Pin output low level signal makes the power controller be in standby；Wherein, the second voltage is described external When equipment extracts USBType-C interfaces, the first power pins are due to hanging to the low level signal of microprocessor input.
Optionally, the circuit further includes first switch and the second switch；
The first switch respectively with the power circuit, the second source pin of the USB Type-C interfaces, third Power pins, the 4th power pins and microprocessor connection；The second switch respectively with the power circuit, described Microprocessor, the first grounding pin of the USB Type-C interfaces, the second grounding leg, third grounding pin and the 4th ground connection Pin connects；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor is received from the USB The first voltage of the first power pins input of Type-C interfaces, low level signal is exported by third Enable Pin, by described the The closed state of one switch switches to off-state；The microprocessor exports high level signal by the 4th Enable Pin will be described The off-state of second switch switches to closed state, and exporting high level signal by the first Enable Pin makes the USB detections set It is standby to start to detect the external equipment；After the USB detection devices identify the external equipment, the microprocessor passes through Two Enable Pins output high level signal makes the power controller start to work, and exporting high level signal by third Enable Pin will The off-state of the first switch switches to closed state；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C The second voltage of the first power pins input of interface, and low level signal is exported by third Enable Pin, by described first The closed state of switch switches to off-state；After the first switch is disconnected, the microprocessor is enabled by first End output low level signal makes the USB detection devices be in standby, and exporting low level signal by the second Enable Pin makes The power controller is in standby, and low level signal is exported by the closed form of the second switch by the 4th Enable Pin State switches to off-state；After the second switch is disconnected, the microprocessor exports high level by third Enable Pin The off-state of the first switch is switched to closed state by signal.
In second aspect, the embodiment of the present invention provides a kind of USB Type-C interface circuits, and the circuit includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal to control the power circuit Export the first voltage；
Microprocessor, for respectively with the first power pins of USB Type-C interfaces, second source pin and described Power controller connects, and when USB Type-C interfaces do not connect external equipment, and reception connects from the USB Type-C The second voltage of the first power pins or second source the pin input of mouth, exporting low level signal by the first Enable Pin makes USB detection devices are in standby, and exporting low level signal by the second Enable Pin makes the power controller be in standby State；Wherein, when the second voltage is that the external equipment extracts USB Type-C interfaces, the first power pins or the second electricity Source pin is due to hanging to the low level signal of microprocessor input.
Optionally, the circuit further includes first switch and the second switch；
The first switch respectively with the power circuit, the third power pins of the USB Type-C interfaces, the 4th Power pins and microprocessor connection；The second switch respectively with the power circuit, microprocessor, described The first grounding pin, the second grounding leg, third grounding pin and the connection of the 4th grounding pin of USB Type-C interfaces；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor is received from the USB The first voltage of the first power pins or second source the pin input of Type-C interfaces, low level is exported by third Enable Pin The closed state of the first switch is switched to off-state by signal；The microprocessor is exported high by the 4th Enable Pin The off-state of the second switch is switched to closed state by level signal, and exporting high level signal by the first Enable Pin makes The USB detection devices start to detect the external equipment；It is described after the USB detection devices identify the external equipment Microprocessor exports high level signal by the second Enable Pin makes the power controller start to work, defeated by third Enable Pin Go out high level signal and the off-state of the first switch is switched into closed state；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C The second voltage of the first power pins or second source the pin input of interface, and low level letter is exported by third Enable Pin Number, the closed state of the first switch is switched into off-state；After the first switch is disconnected, the microprocessor Exporting low level signal by the first Enable Pin makes the USB detection devices be in standby, and is exported by the second Enable Pin Low level signal makes the power controller be in standby, and low level signal is exported by described second by the 4th Enable Pin The closed state of switch switches to off-state；After the second switch is disconnected, the microprocessor is enabled by third The off-state of the first switch is switched to closed state by end output high level signal.
In the third aspect, the embodiment of the present invention provides a kind of USB Type-C interface circuits, and the circuit includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal to control the power circuit Export the first voltage；
Microprocessor, for respectively with the first power pins of USB Type-C interfaces, second source pin, third power supply Pin and power controller connection, and when USB Type-C interfaces do not connect external equipment, receive from described The second voltage of the first power pins or second source pin or third the power pins input of USB Type-C interfaces, by the One Enable Pin output low level signal makes USB detection devices be in standby, and low level signal is exported by the second Enable Pin The power controller is set to be in standby；Wherein, the second voltage is that external equipment extraction USB Type-C connect When mouth, the first power pins or second source pin or third power pins are due to hanging to the low electricity of microprocessor input Ordinary mail number.
Optionally, the circuit further includes first switch and the second switch；
The first switch respectively with the power circuit, the 4th power pins of the USB Type-C interfaces and institute State microprocessor connection；The second switch respectively with the power circuit, the microprocessor, the USB Type-C interfaces The first grounding pin, the second grounding leg, third grounding pin and the 4th grounding pin connection；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor is received from the USB The first voltage of the first power pins or second source pin or third the power pins input of Type-C interfaces, is made by third Energy end exports low level signal, and the closed state of the first switch is switched to off-state；The microprocessor passes through The off-state of the second switch is switched to closed state by four Enable Pins output high level signal, defeated by the first Enable Pin Going out high level signal makes the USB detection devices start to detect the external equipment；The USB detection devices identify described outer After connecing equipment, the microprocessor exports high level signal by the second Enable Pin makes the power controller start to work, and leads to It crosses third Enable Pin output high level signal and the off-state of the first switch is switched into closed state；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C The second voltage of the first power pins or second source pin or third the power pins input of interface, and it is enabled by third End output low level signal, off-state is switched to by the closed state of the first switch；The first switch is disconnected it Afterwards, the microprocessor exports low level signal by the first Enable Pin makes the USB detection devices be in standby, and passes through Second Enable Pin output low level signal makes the power controller be in standby, and low level is exported by the 4th Enable Pin The closed state of the second switch is switched to off-state by signal；After the second switch is disconnected, the microprocessor Device exports high level signal by third Enable Pin and the off-state of the first switch is switched to closed state.
In fourth aspect, the embodiment of the present invention provides a kind of USB Type-C interface control units, and described device includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal to control the power circuit Export the first voltage；
Type-C interface controllers, for detecting pin and the second detection pin company with the first of USB Type-C interfaces It connects, and detects external equipment；
Microprocessor, for being connect respectively with the first power pins of USB Type-C interfaces and the power controller, And when USB Type-C interfaces do not connect external equipment, the first power pins from the USBType-C interfaces are received The second voltage of input, exporting low level signal by the first Enable Pin makes the Type-C interface controllers be in standby shape State, exporting low level signal by the second Enable Pin makes the power controller be in standby；Wherein, the second voltage When extracting USB Type-C interfaces for the external equipment, the first power pins are due to hanging to the low of microprocessor input Level signal.
Optionally, described device further includes first switch and the second switch；
The first switch respectively with the power circuit, the second source pin of the USB Type-C interfaces, third Power pins, the 4th power pins and microprocessor connection；The second switch respectively with the power circuit, described Microprocessor, the first grounding pin of the USB Type-C interfaces, the second grounding leg, third grounding pin and the 4th ground connection Pin connects；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor is received from the USB The first voltage of the first power pins input of Type-C interfaces, low level signal is exported by third Enable Pin, by described the The closed state of one switch switches to off-state；The microprocessor exports high level signal by the 4th Enable Pin will be described The off-state of second switch switches to closed state, and exporting high level signal by the first Enable Pin makes the Type-C interfaces Controller starts to detect the external equipment；After the Type-C interface controllers identify the external equipment, micro- place Reason device exports high level signal by the second Enable Pin makes the power controller start to work, and is exported by third Enable Pin high The off-state of the first switch is switched to closed state by level signal；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C The second voltage of the first power pins input of interface, and low level signal is exported by third Enable Pin, by described first The closed state of switch switches to off-state；After the first switch is disconnected, the microprocessor is enabled by first End output low level signal makes the Type-C interface controllers be in standby, and low level letter is exported by the second Enable Pin Number the power controller is made to be in standby, passes through the 4th Enable Pin and export low level signal closing the second switch Conjunction state switches to off-state；After the second switch is disconnected, the microprocessor is exported high by third Enable Pin The off-state of the first switch is switched to closed state by level signal.
At the 5th aspect, the embodiment of the present invention provides a kind of USB Type-C interface control units, and described device includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal to control the power circuit Export the first voltage；
Type-C interface controllers, for detecting pin and the second detection pin company with the first of USB Type-C interfaces It connects, and detects external equipment；
Microprocessor, for respectively with the first power pins of USB Type-C interfaces, second source pin and described Power controller connects, and when USB Type-C interfaces do not connect external equipment, and reception connects from the USB Type-C The second voltage of the first power pins or second source the pin input of mouth, exporting low level signal by the first Enable Pin makes Type-C interface controllers are in standby, and exporting low level signal by the second Enable Pin makes the power controller be in Standby mode；Wherein, when the second voltage is that the external equipment extracts USB Type-C interfaces, the first power pins or the Two power pins are due to hanging to the low level signal of microprocessor input.
Optionally, described device further includes first switch and the second switch；
The first switch respectively with the power circuit, the third power pins of the USB Type-C interfaces, the 4th Power pins and microprocessor connection；The second switch respectively with the power circuit, microprocessor, described The first grounding pin, the second grounding leg, third grounding pin and the connection of the 4th grounding pin of USB Type-C interfaces；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor is received from the USB The first voltage of the first power pins or second source the pin input of Type-C interfaces, low level is exported by third Enable Pin The closed state of the first switch is switched to off-state by signal；The microprocessor is exported high by the 4th Enable Pin The off-state of the second switch is switched to closed state by level signal, and exporting high level signal by the first Enable Pin makes The Type-C interface controllers start to detect the external equipment；The Type-C interface controllers identify described external set After standby, the microprocessor exports high level signal by the second Enable Pin makes the power controller start to work, by the The off-state of the first switch is switched to closed state by three Enable Pins output high level signal；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C The second voltage of the first power pins or second source the pin input of interface, and low level letter is exported by third Enable Pin Number, the closed state of the first switch is switched into off-state；After the first switch is disconnected, the microprocessor Exporting low level signal by the first Enable Pin makes the Type-C interface controllers be in standby, and passes through the second Enable Pin Output low level signal makes the power controller be in standby, and exporting low level signal by the 4th Enable Pin will be described The closed state of second switch switches to off-state；After the second switch is disconnected, the microprocessor passes through third The off-state of the first switch is switched to closed state by Enable Pin output high level signal.
At the 6th aspect, the embodiment of the present invention provides a kind of USB Type-C interface control units, and described device includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal to control the power circuit Export the first voltage；
Type-C interface controllers, for detecting pin and the second detection pin company with the first of USB Type-C interfaces It connects, and detects external equipment；
Microprocessor, for respectively with the first power pins of USB Type-C interfaces, second source pin, third power supply Pin and power controller connection, and when USB Type-C interfaces do not connect external equipment, receive from described The second voltage of the first power pins or second source pin or third the power pins input of USB Type-C interfaces, by the One Enable Pin output low level signal makes Type-C interface controllers be in standby, and low level is exported by the second Enable Pin Signal makes the power controller be in standby；Wherein, the second voltage is that the external equipment extracts USBType-C When interface, the first power pins or second source pin or third power pins are due to hanging to the low of microprocessor input Level signal.
Optionally, described device further includes first switch and the second switch；
The first switch respectively with the power circuit, the 4th power pins of the USB Type-C interfaces and institute State microprocessor connection；The second switch respectively with the power circuit, the microprocessor, the USB Type-C interfaces The first grounding pin, the second grounding leg, third grounding pin and the 4th grounding pin connection；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor is received from the USB The first voltage of the first power pins or second source pin or third the power pins input of Type-C interfaces, is made by third Energy end exports low level signal, and the closed state of the first switch is switched to off-state；The microprocessor passes through The off-state of the second switch is switched to closed state by four Enable Pins output high level signal, defeated by the first Enable Pin Going out high level signal makes the Type-C interface controllers start to detect the external equipment；The Type-C interface controllers are known After not going out the external equipment, the microprocessor exports high level signal by the second Enable Pin makes the power controller open Beginning work exports high level signal by third Enable Pin and the off-state of the first switch is switched to closed state；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C The second voltage of the first power pins or second source pin or third the power pins input of interface, and it is enabled by third End output low level signal, off-state is switched to by the closed state of the first switch；The first switch is disconnected it Afterwards, the microprocessor exports low level signal by the first Enable Pin makes the Type-C interface controllers be in standby shape State, exporting low level signal by the second Enable Pin makes the power controller be in standby, defeated by the 4th Enable Pin Go out low level signal and the closed state of the second switch is switched into off-state；After the second switch is disconnected, institute It states microprocessor and the off-state of the first switch is switched to by closed state by third Enable Pin output high level signal.
In embodiments of the present invention, when USB Type-C interfaces do not connect external equipment, microprocessor is received from institute The second voltage for stating the first power pins input of USB Type-C interfaces, exporting low level signal by the first Enable Pin makes USB detection devices are in standby, and exporting low level signal by the second Enable Pin makes the power controller be in standby State, to solve existing USB Type-C interface circuits, there are the technical problems that power consumption is high under ideal case.
Description of the drawings
Fig. 1 is the schematic diagram that the interface of USBType-C sockets defines；
Fig. 2 is a kind of functional block diagram for USB Type-C interface circuits that the embodiment of the present invention one provides；
Fig. 2 a are a kind of functional block diagrams for USB Type-C interface circuits that the embodiment of the present invention one provides；
Fig. 3 is a kind of structural schematic diagram for USB Type-C interface circuits that the embodiment of the present invention provides；
Sequence diagram when Fig. 4 is the external equipment grafting USB Type-C interfaces of the offer of the embodiment of the present invention one；
Fig. 5 is the sequence diagram when external equipment that the embodiment of the present invention one provides extracts USB Type-C interfaces；
Fig. 6 is a kind of structural schematic diagram of USB Type-C interface circuits provided by Embodiment 2 of the present invention；
Fig. 7 is a kind of structural schematic diagram for USB Type-C interface circuits that the embodiment of the present invention three provides；
Fig. 8 is a kind of structural schematic diagram for USB Type-C interface control units that the embodiment of the present invention four provides；
Fig. 9 is a kind of structural schematic diagram for USB Type-C interface control units that the embodiment of the present invention five provides；
Figure 10 is a kind of structural schematic diagram for USB Type-C interface control units that the embodiment of the present invention six provides.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not For limiting the present invention.
Embodiment one
Referring to FIG. 2, Fig. 2 is a kind of functional block diagram for USB Type-C interface circuits that the embodiment of the present invention one provides. As shown in Fig. 2, the USB Type-C interface circuits 20 are connected by USB Type-C interfaces 21 and external equipment 22, and pass through It controls USB detection devices 23 and detects external equipment 23.Specifically, USB detection devices 23 respectively with USB Type-C interfaces 21 First detection pin CC1 and the second detection pin CC2 connections, and pass through the first detection pin CC1 and the second detection pin CC2 Identify the type or direction of insertion of external equipment 23.External equipment 23 herein includes filling with USB Type-C interfaces Electric appliance, smart mobile phone, intelligent sound, smart television, desktop computer, tablet computer, Intelligent bracelet, smartwatch etc. equipment.
Please also refer to Fig. 2 and Fig. 2 a, Fig. 2 a are a kind of USB Type-C interface circuits that the embodiment of the present invention one provides Functional block diagram.As shown in Figure 2 a, which includes：
Power circuit 201, for exporting first voltage；
Power controller 202 for being connected with power circuit 201, and exports control signal to control power circuit 201 Export the first voltage；
Microprocessor 203, for connecting respectively with the first power pins B9 and power controller 202 of USB Type-C interfaces It connects, and when external equipment extracts USB Type-C interfaces, first power pins B9 input of the reception from USB Type-C interfaces Second voltage 204, exporting low level signal by the first Enable Pin EN1 makes USB detection devices 205 be in standby, and leads to Crossing the second Enable Pin EN2 output low level signals makes power controller 202 be in standby；Wherein, the second voltage is When the external equipment extracts USB Type-C interfaces, the first power pins B9 inputs the microprocessor 203 because hanging Low level signal.
In the present embodiment, the low level signal of the first Enable Pin EN1 output make USB detection devices be in standby and The low level signal of second Enable Pin EN2 outputs, which makes power controller 202 be in standby, to be useful signal, certainly, may be used also The signal that USB detection devices are in standby or power controller 202 is in standby to be had as high level signal Effect, be not limited to the form of useful signal herein, as long as output signal can make USB detection devices be in standby and Power controller 202 is in standby, and can be implemented in conjunction with the content that the present embodiment is instructed and guided, and the present invention should be fallen into Protection domain in.
Microprocessor herein can also be general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hard Any combinations of part component or these components.In addition, microprocessor herein can be any conventional processors, controller, Microcontroller or state machine.Microprocessor can also be implemented as the combination of computing device, for example, the group of DSP and microprocessor Conjunction, multi-microprocessor, one or more microprocessors combination DSP core or any other this configuration.
In the present embodiment, when external equipment extracts USB Type-C interfaces, microprocessor 203 is according to USB Type-C The second voltage of first power pins B9 inputs of interface, second voltage herein is that external equipment extracts USB Type-C interfaces When, the first power pins are due to hanging to the low level signal of microprocessor input.Microprocessor 203 is sentenced by logic It is disconnected, " the non-grafting USB Type-C interfaces of external equipment " is analyzed, then exporting low level signal by the first Enable Pin EN1 makes USB detection devices are in standby, and so that power controller 202 is in by the second Enable Pin EN2 output low level signals and are waited for Machine state makes USB detection devices 204 or power controller 202 not have to the constantly fully work of detection port in 24 hours, to Substantially reduce the stand-by power consumption of equipment.
Referring to FIG. 3, a kind of structure for USB Type-C interface circuits that Fig. 3, which is the embodiment of the present invention, to be provided is shown It is intended to.As shown in figure 3, the circuit includes power circuit 31, power controller 32, microprocessor 33, first switch S1, second opens Close S2 and resistance R.First switch S1 respectively with power circuit 31, the second source pin A9 of USB Type-C interfaces, third Power pins B4, the 4th power pins A4 and microprocessor 33 connect, second switch S2 respectively with power circuit 31, microprocessor Device 33, the first grounding pin A1 of USB Type-C interfaces, the second grounding leg B1, the ground connection of third grounding pin A12 and the 4th Pin B12 connections.
In the present embodiment, microprocessor 33 including four Enable Pins and refers to ground terminal, the first Enable Pin EN1 and USB Detection device 34 connects, and the second Enable Pin EN2 and power controller 32 connect, and third Enable Pin EN3 is connected with first switch S1 And the state that is opened or closed of first switch S1 can be controlled, the 4th Enable Pin EN4 is connected with second switch S2 and can be with Control second switch S2's is opened or closed state, is grounded with reference to ground terminal GND_BAT.
In the present embodiment, power circuit 31 includes the first body two of battery V1, inductance L1, the first NPN field-effect tube Q1 Pole pipe D1, the first NPN field-effect tube Q1, the second body diode D2 of the 2nd NPN field-effect tube Q2, the 2nd NPN field-effect tube Q2 And the anode of capacitance C1, battery V1 are connected with one end of inductance L1, the other end of inductance L1 respectively with the first body diode D1 Anode, the second body diode D2 cathode connection, the cathode of the first body diode D1 passes through first switch S1 and USB Type- The second source pin A9 of C interface, third power pins B4, the 4th power pins A4 connections, and the first body diode D1's Cathode is grounded by capacitance C1, the cathode connection of the Anode and battery V1 of the second body diode D2, and the cathode of battery V1 is logical Cross the first grounding pin A1 of second switch S2 and USB Type-C interfaces, the second grounding leg B1, third grounding pin A12 and 4th grounding pin B12 connections.First body diode D1 is parallel to the both ends of the drain electrode and source electrode of the first NPN field-effect tube Q1, Second body diode D2 is parallel to the both ends of the drain electrode and source electrode of the 2nd NPN field-effect tube Q2.Q2 and Q1 herein can also be PNP field-effect tube.
In the present embodiment, power controller 32 respectively with the grid of the first NPN field-effect tube Q1 and the 2nd NPN field-effects The grid of pipe Q2 connects, the ground terminal GND_BAT ground connection of power controller 32.When power controller 32 works, power control Device 32 controls signal by output and controls power circuit output first voltage VBUS_BAT, and first voltage VBUS_BAT adds It is loaded on the second source pin A9, third power pins B4, the 4th power pins A4 of USB Type-C interfaces.Wherein, this The voltage volt value or size of current of one voltage VBUS_BAT and direction are power controlled the control of device 32.When power controller 32 When being in standby, in the voltage output to capacitance C1 of battery V1.Therefore when power circuit is in standby, output electricity Hold the voltages of C1 over the ground, i.e. the voltage of first voltage VBUS_BAT to ground terminal GND are approximately equal to cell voltage.
In the present embodiment, the first power pins B9 of USB Type-C interfaces and microprocessor 33 connect, and resistance One end of R1 and microprocessor 33 connect, other end ground connection.Resistance R1 is set, external set is not accessed in USB Type-C interfaces In the case of standby, it ensure that the level signal of the PLUGIN input terminals of microprocessor 33 is low level signal, to make the USB Type-C interface circuits can be reliable and stable work.
In the present embodiment, microprocessor 33 is examined with the first of USB Type-C interfaces respectively by USB detection devices 34 Survey pin CC1, the second detection pin CC2 connections.USB detection devices 34 are used to detect the type and direction of insertion of external equipment. In some possible embodiments, USB detection devices 34 can be USB Type-C interface controllers or other USB inspections Survey identification circuit.
In the present embodiment, first switch S1 controls first voltage VBUS_BAT loads or disconnects in USB Type-C The second source pin A9 of interface, third power pins B4, on the 4th power pins A4.Second switch S1 controls power controller The reference ground GND_BAT and USB Type-C interface circuits of 32 reference ground GND_BAT or USB detection device 34 it is defeated Go out the break-make between ground GND_C.First switch S1 or second switch S2 herein can be switch arrays module, can also be list A switch can be electronic switch, can also be relay switch.In some possible embodiments, as long as first switch S1 or second switch S2 is controlled by electrical, should all be fallen under the scope of the present invention.
Referring to FIG. 4, sequential when Fig. 4 is the external equipment grafting USB Type-C interfaces of the offer of the embodiment of the present invention one Figure.As shown in figure 4, before t1, due to not having external equipment to be inserted into USB Type-C interfaces, the PLUGIN of microprocessor 33 is defeated The input signal for entering end is low level signal, and the input signal of third Enable Pin EN3 is high level, i.e. first switch S1 is in and closes Conjunction state, then first voltage VBUS_BAT load on the second source pin A9 of USB Type-C interfaces, third power pins B4, It is high level signal on 4th power pins A4.The first voltage VBUS_BAT of label at this time loads on USB Type-C interfaces Port be the ports VBUS, at this time the ports VBUS have voltage between reference ground GND_BAT.The 4th Enable Pin EN4 at this time The signal of output is low level, i.e. second switch S2 is off, the ports VBUS to no electricity between reference ground GND_C Pressure.The first Enable Pin EN1 and the second Enable Pin EN2 export low level signal at this time, i.e., at USB detection devices and power controller In standby mode.
At the t1 moment, described in the external equipment grafting when USB Type-C interfaces, due to the first power pins B9 and The A9 short circuits of second source pin, and third power pins B4 and the 4th power pins A4 short circuits, input PLUGIN inputs at this time The signal at end is high level signal, and microprocessor 33 receives the inputted from the first power pins of the USB Type-C interfaces One voltage receives first voltage from PLUGIN input terminals, first voltage herein is high level signal.PLUGIN input terminals The time that high level signal maintains is t1 to t2.
At the t2 moment, microprocessor 33 exports low level signal by third Enable Pin EN3, by the first switch S1's Closed state switches to off-state, and the ports VBUS are not to having voltage at this time between GND_BAT.Microprocessor 33 makes by the 4th The off-state of second switch S2 is switched to closed state by energy end EN4 output high level signals, defeated by the first Enable Pin EN1 Going out high level signal makes the USB detection devices start to detect the external equipment, and GND_C is connected with GND_BAT at this time.
At the t3 moment, when USB detection devices according to the protocol detection of Type-C to corresponding equipment after, send out ID identity and know Other information, microprocessor 33 exports high level signal according to the ID identity identification informations, by the second Enable Pin EN2 makes power control Device processed is started to work, and is switched to the off-state of the first switch by third Enable Pin EN3 output high level signals and is closed Conjunction state, at this point, the ports VBUS are to voltage is begun between GND_C, the input signal of PLUGIN input terminals is high level again Signal, therefore, the USB Type-C interface circuits start to work normally.
Referring to FIG. 5, sequential when Fig. 5 is the external equipment extraction USB Type-C interfaces of the offer of the embodiment of the present invention one Figure.As shown in figure 5, before t1, external equipment is grafting USB Type-C interfaces always, the input signal of PLUGIN input terminals High level is maintain, the input signal of the first Enable Pin EN1 to the 4th Enable Pin EN4 maintains high level, then, VBUS is arrived port Voltage between GND_BAT is high level, and the ports VBUS to the voltage between GND_C are high level.
At the t1 moment, when external equipment extracts USB Type-C interfaces, microprocessor 33 is received from USB Type-C interfaces The first power pins B9 input second voltage, which is low level signal, i.e. the input letter of PLUGIN input terminals Number low level signal is become by high level signal at the t1 moment.At this point, microprocessor 33 exports low electricity by third Enable Pin EN3 The closed state of first switch S1 is switched to off-state by ordinary mail number, i.e. the ports VBUS to there is no voltage between GND_C, The ports VBUS between GND_BAT also without voltage.When the low level signal that microprocessor 33 is exported by third Enable Pin EN3 T1 is maintained between t2.
At the t2 moment, after the first switch is disconnected, confirm that external equipment has been pulled out, microprocessor 33 passes through First Enable Pin EN output low level signals make USB detection devices be in standby, and low electricity is exported by the second Enable Pin EN2 Ordinary mail number makes power controller be in standby, and low level signal is exported by second switch S2's by the 4th Enable Pin EN4 Closed state switches to off-state, to reduce power consumption.
At the t3 moment, after second switch S2 is disconnected, microprocessor 33 exports high level by third Enable Pin EN3 to be believed Number the off-state of first switch is switched into closed state, for accepting signal detection when external equipment is inserted into next time.
The present embodiment on the ground terminal of USB Type-C interfaces by accessing second switch S2, and by USB Type-C Power pins line draws the input terminal as detection signal one of on interface, to realize automatic detection external equipment The purpose be inserted into and extract USB Type-C interfaces.
The present embodiment by by under ideal case USB detection devices and power controller turn off, such USB detection devices With power controller without continuous work in 24 hours, to greatly reduce the stand-by power consumption of whole circuit.
In the present embodiment, when external equipment or the USB Type-C interface circuits break down, microprocessor is logical It crosses and disconnects the first switch S1 on the ports VBUS, or the second switch S2 on ground wire is disconnected, to protect circuitry.
After the external equipment of the present embodiment is extracted, the both ends of the ports USB Type-C, that is, ports VBUS to GND_C are that do not have Electricity, to meet the agreement of Type-C.Also, after detecting that external equipment is inserted into, by opening first switch S1 and the There is electricity at the both ends of two ports switch S2, Type-C, that is, ports VBUS to GND_C, to meet the agreement of Type-C.
In above-mentioned each embodiment, as long as technical characteristic involved in the described each embodiment of the present invention It does not constitute a conflict with each other and can be combined with each other.
Embodiment two
Referring to FIG. 6, Fig. 6 is a kind of structural representation of USB Type-C interface circuits provided by Embodiment 2 of the present invention Figure.As shown in fig. 6, the USB Type-C interface circuits include：
Power circuit 61, for exporting first voltage；
Power controller 62 for being connected with the power circuit, and exports control signal to control the power electricity Road exports the first voltage；
Microprocessor 63, for respectively with the first power pins B9, the second source pin A9 of USB Type-C interfaces with And the power controller 62 connects, and when USB Type-C interfaces do not connect external equipment, receive from the USB First power pins B9 of Type-C interfaces or the second voltage of second source pin A9 inputs, are exported low by the first Enable Pin Level signal makes USB detection devices 64 be in standby, and exporting low level signal by the second Enable Pin makes the power control Device processed is in standby；Wherein, when the second voltage is that the external equipment extracts USB Type-C interfaces, the first power supply The low level signal that pin B9 or second source pin A9 inputs the microprocessor 63 because hanging.
The circuit further includes first switch S1 and second switch S2；
First switch S1 third power pins with the power circuit 61, the USB Type-C interfaces respectively B4, the 4th power pins A4 and the microprocessor 63 connect；The second switch S2 respectively with the power circuit 61, institute State microprocessor 63, the first grounding pin A1 of the USB Type-C interfaces, the second grounding leg B1, third grounding pin A12 And the 4th grounding pin B12 connections.
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor 63 is received from the USB First power pins B9 of Type-C interfaces or the first voltage of second source pin A9 inputs, it is defeated by third Enable Pin EN3 Go out low level signal, the closed state of the first switch S1 is switched into off-state；The microprocessor 63 passes through the 4th The off-state of the second switch S2 is switched to closed state by Enable Pin EN4 output high level signals, enabled by first End EN1 output high level signals make the USB detection devices 64 start to detect the external equipment；The USB detection devices are known After not going out the external equipment, the microprocessor 63 exports high level signal by the second Enable Pin EN2 makes the power control Device 62 processed is started to work, and exporting high level signal by third Enable Pin EN3 switches the off-state of the first switch S1 To closed state.
When the external equipment extracts the USB Type-C interfaces, the microprocessor 63 is received from the USB First power pins B9 of Type-C interfaces or the second voltage of second source pin A9 inputs, and pass through third Enable Pin EN3 exports low level signal, and the closed state of the first switch S1 is switched to off-state；The first switch S1 is broken After opening, the microprocessor 63, which by the first Enable Pin EN1 exports low level signal the USB detection devices 64 is made to be in, to be waited for Machine state, exporting low level signal by the second Enable Pin EN2 makes the power controller be in standby, and makes by the 4th The closed state of the second switch S2 is switched to off-state by energy end EN4 output low level signals；By the second switch After S2 is disconnected, the microprocessor 63 exports high level signal by the disconnected of the first switch S1 by third Enable Pin EN3 Open state switches to closed state.
In above-mentioned each embodiment, as long as technical characteristic involved in the described each embodiment of the present invention It does not constitute a conflict with each other and can be combined with each other.
Embodiment three
Referring to FIG. 7, Fig. 7 is a kind of structural representation for USB Type-C interface circuits that the embodiment of the present invention three provides Figure.As shown in fig. 7, the USB Type-C interface circuits include：
Power circuit 71, for exporting first voltage；
Power controller 72 for being connected with the power circuit, and exports control signal to control the power electricity Road exports the first voltage；
Microprocessor 73, for electric with the first power pins of USB Type-C interfaces, second source pin, third respectively Source pin and power controller connection, and when USB Type-C interfaces do not connect external equipment, receive from institute State USB Type-C interfaces the first power pins second source pin or third power pins input second voltage, pass through First Enable Pin output low level signal makes USB detection devices be in standby, and low level letter is exported by the second Enable Pin Number the power controller is made to be in standby；Wherein, the second voltage is that the external equipment extracts USB Type-C When interface, the first power pins B9 or second source pin A9 or third power pins B4 are due to hanging to the microprocessor 73 The low level signal of input.
The circuit further includes first switch S1 and second switch S2；The first switch S1 respectively with the power circuit 71, the 4th power pins A4 of the USB Type-C interfaces and the microprocessor 73 connect；The second switch S2 points It is not grounded with the power circuit 71, the microprocessor 73, the first grounding pin A1 of the USB Type-C interfaces, second Foot B1, third grounding pin A12 and the 4th grounding pin B12 connections.
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor 73 is received from the USB The the first power pins B9 or second source pin A9 of Type-C interfaces or the first voltage of third power pins B4 inputs, pass through Third Enable Pin EN3 exports low level signal, and the closed state of the first switch S1 is switched to off-state；Micro- place Reason device 73 exports high level signal by the 4th Enable Pin EN4 and the off-state of the second switch S2 is switched to closed form State, exporting high level signal by the first Enable Pin EN1 makes the USB detection devices 74 start to detect the external equipment；Institute It states after USB detection devices 74 identify the external equipment, the microprocessor 73 passes through the second Enable Pin EN2 and exports high level Signal makes the power controller 72 start to work, and high level signal is exported by the first switch by third Enable Pin EN3 The off-state of S1 switches to closed state.
When the external equipment extracts the USB Type-C interfaces, the microprocessor 73 is received from the USB The the first power pins B9 or second source pin A9 of Type-C interfaces or the second voltage of third power pins B4 inputs, and Low level signal is exported by third Enable Pin EN3, the closed state of the first switch S1 is switched into off-state；By institute After stating first switch S1 disconnections, the microprocessor 73 exports low level signal by the first Enable Pin EN1 makes the USB examine Measurement equipment 74 is in standby, and so that the power controller 72 is in by the second Enable Pin EN2 output low level signals and is waited for Machine state exports low level signal by the 4th Enable Pin EN4 and the closed state of the second switch S2 is switched to disconnection shape State；After the second switch S2 is disconnected, the microprocessor 73 exports high level signal by institute by third Enable Pin EN3 The off-state for stating first switch S1 switches to closed state.
In above-mentioned each embodiment, as long as technical characteristic involved in the described each embodiment of the present invention It does not constitute a conflict with each other and can be combined with each other.
Example IV
Referring to FIG. 8, the structure that Fig. 8 is a kind of USB Type-C interface control units that the embodiment of the present invention four provides is shown It is intended to.The device includes：
Power circuit 81, for exporting first voltage；
Power controller 82 for being connected with the power circuit, and exports control signal to control the power electricity Road exports the first voltage；
Type-C interface controllers 83, for detecting pin and the second detection pin company with the first of USB Type-C interfaces It connects, and detects external equipment；
Microprocessor 84, for connecting respectively with the first power pins of USB Type-C interfaces and the power controller It connects, and when USB Type-C interfaces do not connect external equipment, receives the first power supply from the USB Type-C interfaces The second voltage of pin input, exporting low level signal by the first Enable Pin makes the Type-C interface controllers be in standby State, exporting low level signal by the second Enable Pin makes the power controller be in standby.Wherein, second electricity When pressure is that the external equipment extracts USB Type-C interfaces, the first power pins B9 is defeated to the microprocessor 84 because hanging The low level signal entered.
Described device further includes first switch S1 and second switch S2；The first switch S1 respectively with the power circuit 81, the second source pin A9 of USB Type-C interfaces, third power pins B4, the 4th power pins A4 and the microprocessor Device 84 connects；The second switch S2 respectively with the power circuit 81, the microprocessor 84, the USB Type-C interfaces The first grounding pin A1, the second grounding leg B1, third grounding pin A12 and the 4th grounding pin B12 connections.
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor 84 is received from the USB The first voltage of first power pins B9 inputs of Type-C interfaces, exports low level signal, by institute by third Enable Pin EN3 The closed state for stating first switch S1 switches to off-state；The microprocessor 84 passes through the 4th high electricity of Enable Pin EN4 outputs The off-state of the second switch S2 is switched to closed state by ordinary mail number, and high level letter is exported by the first Enable Pin EN1 Number the Type-C interface controllers 83 is made to start to detect the external equipment；The Type-C interface controllers 83 identify institute After stating external equipment, the microprocessor 84 exports high level signal by the second Enable Pin EN2 makes the power controller 82 It starts to work, export high level signal by third Enable Pin EN3 switches to closure by the off-state of the first switch S1 State；
When the external equipment extracts the USB Type-C interfaces, the microprocessor 84 is received from the USB The second voltage of first power pins B9 inputs of Type-C interfaces, and low level signal is exported by third Enable Pin EN3, The closed state of the first switch S1 is switched into off-state；After the first switch S1 is disconnected, the microprocessor Device 84 exports low level signal by the first Enable Pin EN1 makes the Type-C interface controllers 83 be in standby, and passes through Second Enable Pin EN2 output low level signals make the power controller be in standby, and pass through the 4th Enable Pin EN4 outputs The closed state of the second switch S2 is switched to off-state by low level signal；After the second switch S2 is disconnected, The microprocessor 84 exports high level signal by third Enable Pin EN3 and switches to the off-state of the first switch S1 Closed state.
In above-mentioned each embodiment, as long as technical characteristic involved in the described each embodiment of the present invention It does not constitute a conflict with each other and can be combined with each other.
Embodiment five
Referring to FIG. 9, the structure that Fig. 9 is a kind of USB Type-C interface control units that the embodiment of the present invention five provides is shown It is intended to.As shown in figure 9, the device includes：
Power circuit 91, for exporting first voltage；
Power controller 92 for being connected with the power circuit, and exports control signal to control the power electricity Road exports the first voltage；
Type-C interface controllers 93, for detecting pin and the second detection pin company with the first of USB Type-C interfaces It connects, and detects external equipment；
Microprocessor 94, for respectively with the first power pins of USB Type-C interfaces, second source pin and institute Power controller connection is stated, and when USB Type-C interfaces do not connect external equipment, received from the USB Type-C The second voltage of the first power pins or second source the pin input of interface, exporting low level signal by the first Enable Pin makes Type-C interface controllers are in standby, and exporting low level signal by the second Enable Pin makes the power controller be in Standby mode.Wherein, the second voltage be the external equipment extract USB Type-C interfaces when, the first power pins B9 or The low level signal that second source pin A9 inputs the microprocessor 94 because hanging.
Described device further includes first switch S1 and second switch S2；The first switch S1 respectively with the power circuit 91, third power pins B4, the 4th power pins A4 of the USB Type-C interfaces and the microprocessor 94 connect；Institute State first ground connection of the second switch S2 respectively with the power circuit 91, the microprocessor 94, the USB Type-C interfaces Pin A1, the second grounding leg B1, third grounding pin A12 and the 4th grounding pin B12 connections.
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor 94 is received from the USB First power pins B9 of Type-C interfaces or the first voltage of second source pin A9 inputs, it is defeated by third Enable Pin EN3 Go out low level signal, the closed state of the first switch S1 is switched into off-state；The microprocessor 94 passes through the 4th The off-state of the second switch S2 is switched to closed state by Enable Pin EN4 output high level signals, enabled by first End EN1 output high level signals make the Type-C interface controllers 92 start to detect the external equipment；The Type-C connects After mouth controller 92 identifies the external equipment, the microprocessor 94 passes through the second Enable Pin EN2 and exports high level signal So that the power controller 92 is started to work, high level signal is exported by the first switch S1's by third Enable Pin EN3 Off-state switches to closed state.
When the external equipment extracts the USB Type-C interfaces, the microprocessor 94 is received from the USB First power pins B9 of Type-C interfaces or the second voltage of second source pin A9 inputs, and pass through third Enable Pin EN3 exports low level signal, and the closed state of the first switch S1 is switched to off-state；The first switch S1 is broken After opening, the microprocessor 94 exports low level signal by the first Enable Pin EN1 makes the Type-C interface controllers 93 It is in standby, exporting low level signal by the second Enable Pin EN2 makes the power controller 92 be in standby, and leads to It crosses the 4th Enable Pin EN4 output low level signals and the closed state of the second switch S2 is switched into off-state；It will be described After second switch S2 is disconnected, the microprocessor 94 exports high level signal by third Enable Pin EN3 and is opened described first The off-state for closing S1 switches to closed state.
In above-mentioned each embodiment, as long as technical characteristic involved in the described each embodiment of the present invention It does not constitute a conflict with each other and can be combined with each other.
Embodiment six
Referring to FIG. 10, Figure 10 is a kind of structure for USB Type-C interface control units that the embodiment of the present invention six provides Schematic diagram.As shown in Figure 10, which includes：
Power circuit 101, for exporting first voltage；
Power controller 102 for being connected with the power circuit, and exports control signal to control the power electricity Road exports the first voltage；
Type-C interface controllers 103, for detecting pin and the second detection pin with the first of USB Type-C interfaces Connection, and detect external equipment；
Microprocessor 104, for respectively with the first power pins B9 of USB Type-C interfaces, second source pin A9, Third power pins B4 and the power controller 102 connect, and when USB Type-C interfaces do not connect external equipment When, the first power pins B9 or second source pin A9 or third power pins B4 of reception from the USB Type-C interfaces are defeated The second voltage entered, exporting low level signal by the first Enable Pin EN1 makes Type-C interface controllers be in standby, and leads to Crossing the second Enable Pin EN2 output low level signals makes the power controller 102 be in standby.Wherein, second electricity When pressure is that the external equipment extracts USB Type-C interfaces, the first power pins B9 or second source pin A9 or third power supply The low level signal that pin B4 inputs the microprocessor 104 because hanging.
Described device further includes first switch S1 and second switch S2；The first switch S1 respectively with the power circuit 101, the 4th power pins A4 of the USB Type-C interfaces and the microprocessor 104 connect；The second switch S2 Respectively with the power circuit 101, the microprocessor 104, the first grounding pin A1 of the USB Type-C interfaces, second Grounding leg B1, third grounding pin A12 and the 4th grounding pin B12 connections.
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor 104 is received from the USB The the first power pins B9 or second source pin A9 of Type-C interfaces or the first voltage of third power pins B4 inputs, pass through Third Enable Pin EN3 exports low level signal, and the closed state of the first switch S1 is switched to off-state；Micro- place Reason device 104 exports high level signal by the 4th Enable Pin EN4 and the off-state of the second switch S2 is switched to closed form State, exporting high level signal by the first Enable Pin EN1 makes the Type-C interface controllers 103 start to detect described external set It is standby；After the Type-C interface controllers 103 identify the external equipment, the microprocessor 104 passes through the second Enable Pin EN2 output high level signals make the power controller 102 start to work, and high level signal is exported by third Enable Pin EN3 The off-state of the first switch S1 is switched into closed state；
When the external equipment extracts the USB Type-C interfaces, the microprocessor 104 is received from the USB The the first power pins B9 or second source pin A9 of Type-C interfaces or the second voltage of third power pins B4 inputs, and Low level signal is exported by third Enable Pin EN3, the closed state of the first switch S1 is switched into off-state；By institute After stating first switch S1 disconnections, the microprocessor 104 is made described by the first Enable Pin EN1 output low level signals Type-C interface controllers 103 are in standby, and exporting low level signal by the second Enable Pin EN2 makes the power control Device 102 is in standby, and exporting low level signal by the 4th Enable Pin EN4 cuts the closed state of the second switch S2 Shift to off-state；After the second switch S2 is disconnected, the microprocessor 104 is high by the EN3 outputs of third Enable Pin The off-state of the first switch S1 is switched to closed state by level signal.
In above-mentioned each embodiment, as long as technical characteristic involved in the described each embodiment of the present invention It does not constitute a conflict with each other and can be combined with each other.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.

Claims (12)

1. a kind of USB Type-C interface circuits, which is characterized in that the circuit includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal and is exported with controlling the power circuit The first voltage；
Microprocessor, for being connect respectively with the first power pins of USB Type-C interfaces and the power controller, and When USB Type-C interfaces do not connect external equipment, receives and inputted from the first power pins of the USB Type-C interfaces Second voltage, exporting low level signal by the first Enable Pin makes USB detection devices be in standby, enabled by second End output low level signal makes the power controller be in standby；Wherein, the second voltage is the external equipment When extracting USB Type-C interfaces, the first power pins are due to hanging to the low level signal of microprocessor input, wherein The microprocessor further includes referring to ground terminal, described to be grounded with reference to ground terminal.
2. circuit according to claim 1, which is characterized in that
The USB Type-C interface circuits further include first switch and the second switch；
The first switch respectively with the power circuit, the second source pin of the USB Type-C interfaces, third power supply Pin, the 4th power pins and microprocessor connection；The second switch respectively with the power circuit, micro- place Manage device, the first grounding pin of the USB Type-C interfaces, the second grounding pin, third grounding pin and the 4th grounding lead Foot connects；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor reception connects from the USB Type-C The first voltage of the first power pins input of mouth, exports low level signal, by the first switch by third Enable Pin Closed state switches to off-state；The microprocessor exports high level signal by the second switch by the 4th Enable Pin Off-state switch to closed state, by the first Enable Pin export high level signal make the USB detection devices start to examine Survey the external equipment；After the USB detection devices identify the external equipment, the microprocessor passes through the second Enable Pin Output high level signal makes the power controller start to work, and high level signal is exported by described first by third Enable Pin The off-state of switch switches to closed state；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C interfaces The first power pins input second voltage, and by third Enable Pin export low level signal, by the first switch Closed state switch to off-state；After the first switch is disconnected, the microprocessor is defeated by the first Enable Pin Going out low level signal makes the USB detection devices be in standby, and is made by the second Enable Pin output low level signal described Power controller is in standby, and exporting low level signal by the 4th Enable Pin cuts the closed state of the second switch Shift to off-state；After the second switch is disconnected, the microprocessor exports high level signal by third Enable Pin The off-state of the first switch is switched into closed state.
3. a kind of USB Type-C interface circuits, which is characterized in that the circuit includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal and is exported with controlling the power circuit The first voltage；
Microprocessor, for respectively with the first power pins of USB Type-C interfaces, second source pin and the power Controller connects, and when USB Type-C interfaces do not connect external equipment, receives from the USB Type-C interfaces First power pins or the second voltage of second source pin input, exporting low level signal by the first Enable Pin makes USB examine Measurement equipment is in standby, and exporting low level signal by the second Enable Pin makes the power controller be in standby； Wherein, when the second voltage is that the external equipment extracts USB Type-C interfaces, the first power pins or second source draw Foot is due to hanging to the low level signal of microprocessor input, wherein the microprocessor further includes referring to ground terminal, institute It states and is grounded with reference to ground terminal.
4. circuit according to claim 3, which is characterized in that
The USB Type-C interface circuits further include first switch and the second switch；
The first switch respectively with the power circuit, the third power pins of the USB Type-C interfaces, the 4th power supply Pin and microprocessor connection；The second switch respectively with the power circuit, the microprocessor, the USB The first grounding pin, the second grounding pin, third grounding pin and the connection of the 4th grounding pin of Type-C interfaces；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor reception connects from the USB Type-C The first voltage of the first power pins or second source the pin input of mouth, low level signal is exported by third Enable Pin, will The closed state of the first switch switches to off-state；The microprocessor exports high level signal by the 4th Enable Pin The off-state of the second switch is switched into closed state, exporting high level signal by the first Enable Pin makes the USB Detection device starts to detect the external equipment；After the USB detection devices identify the external equipment, the microprocessor Exporting high level signal by the second Enable Pin makes the power controller start to work, and high level is exported by third Enable Pin The off-state of the first switch is switched to closed state by signal；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C interfaces The first power pins or second source pin input second voltage, and by third Enable Pin export low level signal, The closed state of the first switch is switched into off-state；After the first switch is disconnected, the microprocessor is logical Crossing the first Enable Pin output low level signal makes the USB detection devices be in standby, and is exported by the second Enable Pin low Level signal makes the power controller be in standby, and export low level signal by the 4th Enable Pin opens described second The closed state of pass switches to off-state；After the second switch is disconnected, the microprocessor passes through third Enable Pin The off-state of the first switch is switched to closed state by output high level signal.
5. a kind of USB Type-C interface circuits, which is characterized in that the circuit includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal and is exported with controlling the power circuit The first voltage；
Microprocessor, for respectively with the first power pins of USB Type-C interfaces, second source pin, third power pins And the power controller connection, and when USB Type-C interfaces do not connect external equipment, receive from the USB The second voltage of the first power pins or second source pin or third the power pins input of Type-C interfaces, makes by first Output low level signal in energy end makes USB detection devices be in standby, and exporting low level signal by the second Enable Pin makes institute Power controller is stated to be in standby；Wherein, when the second voltage is that the external equipment extracts USB Type-C interfaces, First power pins or second source pin or third power pins believe the low level of microprocessor input because hanging Number, wherein the microprocessor further includes referring to ground terminal, described to be grounded with reference to ground terminal.
6. circuit according to claim 5, which is characterized in that
The USB Type-C interface circuits further include first switch and the second switch；
The first switch respectively with the power circuit, the 4th power pins of the USB Type-C interfaces and described micro- Processor connects；The second switch respectively with the power circuit, the microprocessor, the USB Type-C interfaces One grounding pin, the second grounding pin, third grounding pin and the connection of the 4th grounding pin；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor reception connects from the USB Type-C The first voltage of the first power pins or second source pin or third the power pins input of mouth, is exported by third Enable Pin The closed state of the first switch is switched to off-state by low level signal；The microprocessor passes through the 4th Enable Pin The off-state of the second switch is switched to closed state by output high level signal, and high level is exported by the first Enable Pin Signal makes the USB detection devices start to detect the external equipment；The USB detection devices identify the external equipment Afterwards, the microprocessor exports high level signal by the second Enable Pin makes the power controller start to work, and passes through third The off-state of the first switch is switched to closed state by Enable Pin output high level signal；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C interfaces The first power pins or second source pin or the second voltage of third power pins input, and it is defeated by third Enable Pin Go out low level signal, the closed state of the first switch is switched into off-state；After the first switch is disconnected, institute State microprocessor makes the USB detection devices be in standby by the first Enable Pin output low level signal, passes through second Enable Pin output low level signal makes the power controller be in standby, and low level signal is exported by the 4th Enable Pin The closed state of the second switch is switched into off-state；After the second switch is disconnected, the microprocessor is logical It crosses third Enable Pin output high level signal and the off-state of the first switch is switched into closed state.
7. a kind of USB Type-C interface control units, which is characterized in that described device includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal and is exported with controlling the power circuit The first voltage；
Type-C interface controllers, for being connect with the first of USB Type-C interfaces the detection pin and the second detection pin, and And detection external equipment；
Microprocessor, for being connect respectively with the first power pins of USB Type-C interfaces and the power controller, and When USB Type-C interfaces do not connect external equipment, receives and inputted from the first power pins of the USB Type-C interfaces Second voltage, by the first Enable Pin export low level signal so that the Type-C interface controllers is in standby, lead to Crossing the second Enable Pin output low level signal makes the power controller be in standby；Wherein, the second voltage is institute When stating external equipment extraction USB Type-C interfaces, the first power pins are due to hanging to the low level of microprocessor input Signal, wherein the microprocessor further includes referring to ground terminal, described to be grounded with reference to ground terminal.
8. device according to claim 7, which is characterized in that
Described device further includes first switch and the second switch；
The first switch respectively with the power circuit, the second source pin of the USB Type-C interfaces, third power supply Pin, the 4th power pins and microprocessor connection；The second switch respectively with the power circuit, micro- place Manage device, the first grounding pin of the USB Type-C interfaces, the second grounding pin, third grounding pin and the 4th grounding lead Foot connects；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor reception connects from the USB Type-C The first voltage of the first power pins input of mouth, exports low level signal, by the first switch by third Enable Pin Closed state switches to off-state；The microprocessor exports high level signal by the second switch by the 4th Enable Pin Off-state switch to closed state, by the first Enable Pin export high level signal so that the Type-C interface controllers is opened Begin to detect the external equipment；After the Type-C interface controllers identify the external equipment, the microprocessor passes through Second Enable Pin output high level signal makes the power controller start to work, and high level signal is exported by third Enable Pin The off-state of the first switch is switched into closed state；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C interfaces The first power pins input second voltage, and by third Enable Pin export low level signal, by the first switch Closed state switch to off-state；After the first switch is disconnected, the microprocessor is defeated by the first Enable Pin Going out low level signal makes the Type-C interface controllers be in standby, and exporting low level signal by the second Enable Pin makes The power controller is in standby, and low level signal is exported by the closed form of the second switch by the 4th Enable Pin State switches to off-state；After the second switch is disconnected, the microprocessor exports high level by third Enable Pin The off-state of the first switch is switched to closed state by signal.
9. a kind of USB Type-C interface control units, which is characterized in that described device includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal and is exported with controlling the power circuit The first voltage；
Type-C interface controllers, for being connect with the first of USB Type-C interfaces the detection pin and the second detection pin, and And detection external equipment；
Microprocessor, for respectively with the first power pins of USB Type-C interfaces, second source pin and the power Controller connects, and when USB Type-C interfaces do not connect external equipment, receives from the USB Type-C interfaces First power pins or the second voltage of second source pin input, exporting low level signal by the first Enable Pin makes Type-C Interface controller is in standby, and exporting low level signal by the second Enable Pin makes the power controller be in standby shape State；Wherein, when the second voltage is that the external equipment extracts USB Type-C interfaces, the first power pins or second source Pin is due to hanging to the low level signal of microprocessor input, wherein and the microprocessor further includes referring to ground terminal, It is described to be grounded with reference to ground terminal.
10. device according to claim 9, which is characterized in that
Described device further includes first switch and the second switch；
The first switch respectively with the power circuit, the third power pins of the USB Type-C interfaces, the 4th power supply Pin and microprocessor connection；The second switch respectively with the power circuit, the microprocessor, the USB The first grounding pin, the second grounding pin, third grounding pin and the connection of the 4th grounding pin of Type-C interfaces；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor reception connects from the USB Type-C The first voltage of the first power pins or second source the pin input of mouth, low level signal is exported by third Enable Pin, will The closed state of the first switch switches to off-state；The microprocessor exports high level signal by the 4th Enable Pin The off-state of the second switch is switched into closed state, is made by the first Enable Pin output high level signal described Type-C interface controllers start to detect the external equipment；The Type-C interface controllers identify the external equipment Afterwards, the microprocessor exports high level signal by the second Enable Pin makes the power controller start to work, and passes through third The off-state of the first switch is switched to closed state by Enable Pin output high level signal；
Alternatively,
When the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type-C interfaces The first power pins or second source pin input second voltage, and by third Enable Pin export low level signal, The closed state of the first switch is switched into off-state；After the first switch is disconnected, the microprocessor is logical Crossing the first Enable Pin output low level signal makes the Type-C interface controllers be in standby, defeated by the second Enable Pin Going out low level signal makes the power controller be in standby, and low level signal is exported by described the by the 4th Enable Pin The closed state of two switches switches to off-state；After the second switch is disconnected, the microprocessor is made by third The off-state of the first switch is switched to closed state by energy end output high level signal.
11. a kind of USB Type-C interface control units, which is characterized in that described device includes：
Power circuit, for exporting first voltage；
Power controller for being connected with the power circuit, and exports control signal and is exported with controlling the power circuit The first voltage；
Type-C interface controllers, for being connect with the first of USB Type-C interfaces the detection pin and the second detection pin, and And detection external equipment；
Microprocessor, for respectively with the first power pins of USB Type-C interfaces, second source pin, third power pins And the power controller connection, and when USB Type-C interfaces do not connect external equipment, receive from the USB The second voltage of the first power pins or second source pin or third the power pins input of Type-C interfaces, makes by first Output low level signal in energy end makes Type-C interface controllers be in standby, and passes through the second Enable Pin and exports low level signal The power controller is set to be in standby；Wherein, the second voltage is that external equipment extraction USB Type-C connect When mouth, the first power pins or second source pin or third power pins are due to hanging to the low electricity of microprocessor input Ordinary mail number, wherein the microprocessor further includes referring to ground terminal, described to be grounded with reference to ground terminal.
12. according to the devices described in claim 11, which is characterized in that
Described device further includes first switch and the second switch；
The first switch respectively with the power circuit, the 4th power pins of the USB Type-C interfaces and described micro- Processor connects；The second switch respectively with the power circuit, the microprocessor, the USB Type-C interfaces One grounding pin, the second grounding pin, third grounding pin and the connection of the 4th grounding pin；
Described in the external equipment grafting when USB Type-C interfaces, the microprocessor reception connects from the USB Type-C The first voltage of the first power pins or second source pin or third the power pins input of mouth, is exported by third Enable Pin The closed state of the first switch is switched to off-state by low level signal；The microprocessor passes through the 4th Enable Pin The off-state of the second switch is switched to closed state by output high level signal, and high level is exported by the first Enable Pin Signal makes the Type-C interface controllers start to detect the external equipment；The Type-C interface controllers identify described After external equipment, the microprocessor exports high level signal by the second Enable Pin makes the power controller start to work, High level signal is exported by third Enable Pin, and the off-state of the first switch is switched into closed state；
Alternatively, when the external equipment extracts the USB Type-C interfaces, the microprocessor is received from the USB Type- The second voltage of the first power pins or second source pin or third the power pins input of C interface, and made by third Energy end exports low level signal, and the closed state of the first switch is switched to off-state；The first switch is disconnected Later, the microprocessor exports low level signal by the first Enable Pin makes the Type-C interface controllers be in standby shape State, exporting low level signal by the second Enable Pin makes the power controller be in standby, defeated by the 4th Enable Pin Go out low level signal and the closed state of the second switch is switched into off-state；After the second switch is disconnected, institute It states microprocessor and the off-state of the first switch is switched to by closed state by third Enable Pin output high level signal.
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