CN105867593A - USB Type-C interface circuit and control device thereof - Google Patents

USB Type-C interface circuit and control device thereof Download PDF

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Publication number
CN105867593A
CN105867593A CN201610326963.XA CN201610326963A CN105867593A CN 105867593 A CN105867593 A CN 105867593A CN 201610326963 A CN201610326963 A CN 201610326963A CN 105867593 A CN105867593 A CN 105867593A
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interface
level signal
state
switch
usb type
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CN105867593B (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

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)

Abstract

The invention discloses a USB Type-C interface circuit and a control device thereof. The circuit comprises a power circuit, a power controller and a microprocessor; the power circuit is used for outputting the first voltage; the power controller is used for being connected with the power circuit and outputting a control signal to control the power circuit to output the first voltage; the microprocessor is used for being connected with a first power supply pin of a USB Type-C interface and the power controller separately, receiving the second voltage input by the first power supply pin of the USB Type-C interface when the USB Type-C interface is not connected with equipment, outputting a low level signal through a first enabling end to enable USB detection equipment to be in a standby state and outputting a low level signal through a second enabling end to enable the power controller to be in a standby state. Accordingly, by switching off the USB detection equipment and the power controller on the standby condition, the USB detection equipment and the power controller do not need to continuously work in 24 hours, and therefore the standby power consumption of the complete circuit is reduced.

Description

A kind of USB Type-C interface circuit and control device thereof
Technical field
The present invention relates to USB technical field, particularly relate to a kind of USB Type-C interface circuit and control device.
Background technology
USB tissue discloses novel USB interface i.e. USB Type-C interface.This novel USBType-C interface compares old-fashioned USBType-A interface and USBType-B interface has the following characteristics that 1, interface size is the thinnest less；2, data transmission bauds is faster；3, through-put power ability is higher；4, positive anti-plug is supported.
Refer to the schematic diagram that Fig. 1, Fig. 1 are the interface definition of USBType-C socket.As it is shown in figure 1, this interface divides two rows, each row all to have 12 signal pins.Wherein having 4 power pins is all the power supply VBUS, respectively A4, B4, A9 and B9 of USB.Additionally having 4 grounding pins is all the ground GND, respectively A1, B1, A12 and B12 of USB.Coupled together by Type-C connecting line between two different USBType-C sockets.A Type-C plug is had respectively at the connecting line two ends of Type-C.A4, B4, A9 and B9 pin in USB Type-C plug is joined together in connecting line, and in USB Type-C plug, A1, B1, A12 and B12 pin is also joined together in connecting line.It addition, USB Type-C socket also has these two pins of CC1 and CC2 to be respectively intended to do the detection of Type-C interface, it is used for judging the information such as the direction that equipment connects, and the type of equipment.
Inventor is during realizing the present invention, find prior art at least to there is problems in that generally and support that the equipment of this interface is required for a special USB Type-C interface controller to detect the plugging condition of interface, it is used for identifying whether equipment inserts or pull out, and the type of equipment.In order to realize this function, this USB Type-C interface controller needs the detection being continued for.Even if not having equipment to insert, 24 hours on-line checking always also wanted by USB Type-C interface controller, and this can increase the stand-by power consumption of USB Type-C interface controller undoubtedly.It is all to be powered by built-in battery in view of mobile device in the overwhelming majority times, the standby current of system own is had and compares strict requirements.Considering from the Energy Angle of mobile USB system, these electric currents additionally consumed standby when are all to need to eliminate.
Summary of the invention
In order to overcome above-mentioned technical problem, the object of the invention aims to provide a kind of USB Type-C interface circuit and controls device, to solve existing USB Type-C interface circuit or to control device and there is the technical problem that power consumption is high under ideal case.
For solving above-mentioned technical problem, embodiment of the present invention offer techniques below scheme:
In first aspect, the embodiment of the present invention provides a kind of USB Type-C interface circuit, and described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Microprocessor, it is connected for the first power pins and described power controller with USB Type-C interface respectively, and when USB Type-C interface does not connect external equipment, receive the second voltage that the first power pins from described USBType-C interface inputs, make USB detection equipment be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage is described external equipment when extracting USBType-C interface, and the first power pins is low level signal that is that input described microprocessor because of unsettled.
Alternatively, described circuit also includes the first switch and second switch；
Described first switch connects with described power circuit, the second source pin of described USB Type-C interface, the 3rd power pins, the 4th power pins and described microprocessor respectively；Described second switch connects with described power circuit, described microprocessor, the first grounding pin of described USB Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin respectively；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives the first voltage of the first power pins input from described USB Type-C interface, by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；The off-state of described second switch is switched to closure state by the 4th Enable Pin output high level signal by described microprocessor, makes described USB detection equipment start to detect described external equipment by the first Enable Pin output high level signal；After described USB detection equipment identifies described external equipment, described microprocessor makes described power controller start working by the second Enable Pin output high level signal, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, described microprocessor receives the second voltage of the first power pins input from described USB Type-C interface, and by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；After switching off described first, described microprocessor makes described USB detection equipment be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal, by the 4th Enable Pin output low level signal, the closure state of described second switch is switched to off-state；After being disconnected by described second switch, the off-state of described first switch is switched to closure state by the 3rd Enable Pin output high level signal by described microprocessor.
In second aspect, the embodiment of the present invention provides a kind of USB Type-C interface circuit, and described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Microprocessor, for connecting with the first power pins of USB Type-C interface, second source pin and described power controller respectively, and when USB Type-C interface does not connect external equipment, receive the first power pins from described USB Type-C interface or the second voltage of second source pin input, make USB detection equipment be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins or second source pin be low level signal that is that input described microprocessor because of unsettled.
Alternatively, described circuit also includes the first switch and second switch；
Described first switch connects with described power circuit, the 3rd power pins of described USB Type-C interface, the 4th power pins and described microprocessor respectively；Described second switch connects with described power circuit, described microprocessor, the first grounding pin of described USB Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin respectively；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives the first power pins from described USB Type-C interface or the first voltage of second source pin input, by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；The off-state of described second switch is switched to closure state by the 4th Enable Pin output high level signal by described microprocessor, makes described USB detection equipment start to detect described external equipment by the first Enable Pin output high level signal；After described USB detection equipment identifies described external equipment, described microprocessor makes described power controller start working by the second Enable Pin output high level signal, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, described microprocessor receives the first power pins from described USB Type-C interface or the second voltage of second source pin input, and by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；After switching off described first, described microprocessor makes described USB detection equipment be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal, by the 4th Enable Pin output low level signal, the closure state of described second switch is switched to off-state；After being disconnected by described second switch, the off-state of described first switch is switched to closure state by the 3rd Enable Pin output high level signal by described microprocessor.
In the third aspect, the embodiment of the present invention provides a kind of USB Type-C interface circuit, and described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Microprocessor, for connecting with the first power pins of USB Type-C interface, second source pin, the 3rd power pins and described power controller respectively, and when USB Type-C interface does not connect external equipment, receive the first power pins from described USB Type-C interface or second source pin or the second voltage of the 3rd power pins input, make USB detection equipment be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins or second source pin or the 3rd power pins be low level signal that is that input described microprocessor because of unsettled.
Alternatively, described circuit also includes the first switch and second switch；
Described first switch connects with described power circuit, the 4th power pins of described USB Type-C interface and described microprocessor respectively；Described second switch connects with described power circuit, described microprocessor, the first grounding pin of described USB Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin respectively；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives the first power pins from described USB Type-C interface or second source pin or the first voltage of the 3rd power pins input, by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；The off-state of described second switch is switched to closure state by the 4th Enable Pin output high level signal by described microprocessor, makes described USB detection equipment start to detect described external equipment by the first Enable Pin output high level signal；After described USB detection equipment identifies described external equipment, described microprocessor makes described power controller start working by the second Enable Pin output high level signal, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, described microprocessor receives the first power pins from described USB Type-C interface or second source pin or the second voltage of the 3rd power pins input, and by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；After switching off described first, described microprocessor makes described USB detection equipment be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal, by the 4th Enable Pin output low level signal, the closure state of described second switch is switched to off-state；After being disconnected by described second switch, the off-state of described first switch is switched to closure state by the 3rd Enable Pin output high level signal by described microprocessor.
In fourth aspect, the embodiment of the present invention provides a kind of USB Type-C interface control unit, and described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Type-C interface controller, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and detects external equipment；
Microprocessor, it is connected for the first power pins and described power controller with USB Type-C interface respectively, and when USB Type-C interface does not connect external equipment, receive the second voltage that the first power pins from described USBType-C interface inputs, make described Type-C interface controller be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins is low level signal that is that input described microprocessor because of unsettled.
Alternatively, described device also includes the first switch and second switch；
Described first switch connects with described power circuit, the second source pin of described USB Type-C interface, the 3rd power pins, the 4th power pins and described microprocessor respectively；Described second switch connects with described power circuit, described microprocessor, the first grounding pin of described USB Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin respectively；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives the first voltage of the first power pins input from described USB Type-C interface, by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；The off-state of described second switch is switched to closure state by the 4th Enable Pin output high level signal by described microprocessor, makes described Type-C interface controller start to detect described external equipment by the first Enable Pin output high level signal；After described Type-C interface controller identifies described external equipment, described microprocessor makes described power controller start working by the second Enable Pin output high level signal, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, described microprocessor receives the second voltage of the first power pins input from described USB Type-C interface, and by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；After switching off described first, described microprocessor makes described Type-C interface controller be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal, by the 4th Enable Pin output low level signal, the closure state of described second switch is switched to off-state；After being disconnected by described second switch, the off-state of described first switch is switched to closure state by the 3rd Enable Pin output high level signal by described microprocessor.
At the 5th aspect, the embodiment of the present invention provides a kind of USB Type-C interface control unit, and described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Type-C interface controller, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and detects external equipment；
Microprocessor, for connecting with the first power pins of USB Type-C interface, second source pin and described power controller respectively, and when USB Type-C interface does not connect external equipment, receive the first power pins from described USB Type-C interface or the second voltage of second source pin input, make Type-C interface controller be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins or second source pin be low level signal that is that input described microprocessor because of unsettled.
Alternatively, described device also includes the first switch and second switch；
Described first switch connects with described power circuit, the 3rd power pins of described USB Type-C interface, the 4th power pins and described microprocessor respectively；Described second switch connects with described power circuit, described microprocessor, the first grounding pin of described USB Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin respectively；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives the first power pins from described USB Type-C interface or the first voltage of second source pin input, by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；The off-state of described second switch is switched to closure state by the 4th Enable Pin output high level signal by described microprocessor, makes described Type-C interface controller start to detect described external equipment by the first Enable Pin output high level signal；After described Type-C interface controller identifies described external equipment, described microprocessor makes described power controller start working by the second Enable Pin output high level signal, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, described microprocessor receives the first power pins from described USB Type-C interface or the second voltage of second source pin input, and by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；After switching off described first, described microprocessor makes described Type-C interface controller be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal, by the 4th Enable Pin output low level signal, the closure state of described second switch is switched to off-state；After being disconnected by described second switch, the off-state of described first switch is switched to closure state by the 3rd Enable Pin output high level signal by described microprocessor.
At the 6th aspect, the embodiment of the present invention provides a kind of USB Type-C interface control unit, and described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Type-C interface controller, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and detects external equipment；
Microprocessor, for connecting with the first power pins of USB Type-C interface, second source pin, the 3rd power pins and described power controller respectively, and when USB Type-C interface does not connect external equipment, receive the first power pins from described USB Type-C interface or second source pin or the second voltage of the 3rd power pins input, make Type-C interface controller be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage is described external equipment when extracting USBType-C interface, and the first power pins or second source pin or the 3rd power pins be low level signal that is that input described microprocessor because of unsettled.
Alternatively, described device also includes the first switch and second switch；
Described first switch connects with described power circuit, the 4th power pins of described USB Type-C interface and described microprocessor respectively；Described second switch connects with described power circuit, described microprocessor, the first grounding pin of described USB Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin respectively；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives the first power pins from described USB Type-C interface or second source pin or the first voltage of the 3rd power pins input, by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；The off-state of described second switch is switched to closure state by the 4th Enable Pin output high level signal by described microprocessor, makes described Type-C interface controller start to detect described external equipment by the first Enable Pin output high level signal；After described Type-C interface controller identifies described external equipment, described microprocessor makes described power controller start working by the second Enable Pin output high level signal, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, described microprocessor receives the first power pins from described USB Type-C interface or second source pin or the second voltage of the 3rd power pins input, and by the 3rd Enable Pin output low level signal, the closure state of described first switch is switched to off-state；After switching off described first, described microprocessor makes described Type-C interface controller be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal, by the 4th Enable Pin output low level signal, the closure state of described second switch is switched to off-state；After being disconnected by described second switch, the off-state of described first switch is switched to closure state by the 3rd Enable Pin output high level signal by described microprocessor.
In embodiments of the present invention, when USB Type-C interface does not connect external equipment, microprocessor receives the second voltage of the first power pins input from described USB Type-C interface, USB detection equipment is made to be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal, thus solve existing USB Type-C interface circuit under ideal case, there is the technical problem that power consumption is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the interface definition of USBType-C socket；
Fig. 2 is the theory diagram of a kind of USB Type-C interface circuit that the embodiment of the present invention one provides；
Fig. 2 a is the theory diagram of a kind of USB Type-C interface circuit that the embodiment of the present invention one provides；
Fig. 3 is the structural representation of a kind of USB Type-C interface circuit that the embodiment of the present invention provides；
Fig. 4 is the sequential chart during external equipment grafting USB Type-C interface of the embodiment of the present invention one offer；
Fig. 5 is the external equipment that the embodiment of the present invention one provides sequential chart when extracting USB Type-C interface；
Fig. 6 is the structural representation of a kind of USB Type-C interface circuit that the embodiment of the present invention two provides；
Fig. 7 is the structural representation of a kind of USB Type-C interface circuit that the embodiment of the present invention three provides；
Fig. 8 is the structural representation of a kind of USB Type-C interface control unit that the embodiment of the present invention four provides；
Fig. 9 is the structural representation of a kind of USB Type-C interface control unit that the embodiment of the present invention five provides；
Figure 10 is the structural representation of a kind of USB Type-C interface control unit that the embodiment of the present invention six provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment one
Refer to the theory diagram that Fig. 2, Fig. 2 are a kind of USB Type-C interface circuits that the embodiment of the present invention one provides.As in figure 2 it is shown, this USB Type-C interface circuit 20 is connected by USB Type-C interface 21 and external equipment 22, and detect external equipment 23 by controlling USB detection equipment 23.Concrete, USB detection equipment 23 is connected with the first detection pin CC1 and the second detection pin CC2 of USB Type-C interface 21 respectively, and is identified type or the direction of insertion of external equipment 23 by the first detection pin CC1 and the second detection pin CC2.External equipment 23 herein includes the charger with USB Type-C interface, smart mobile phone, intelligent sound, intelligent television, desktop computer, panel computer, Intelligent bracelet, intelligent watch etc. equipment.
It is the theory diagram of a kind of USB Type-C interface circuit that the embodiment of the present invention one provides please also refer to Fig. 2 and Fig. 2 a, Fig. 2 a.As shown in Figure 2 a, this USB Type-C interface circuit 20 includes:
Power circuit 201, for output the first voltage；
Power controller 202, for and power circuit 201 connect, and export control signal with control power circuit 201 export described first voltage；
Microprocessor 203, it is connected for the first power pins B9 and power controller 202 with USB Type-C interface respectively, and when external equipment extracts USB Type-C interface, receive the second voltage 204 that the first power pins B9 from USB Type-C interface inputs, make USB detection equipment 205 be in holding state by the first Enable Pin EN1 output low level signal, make power controller 202 be in holding state by the second Enable Pin EN2 output low level signal；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins B9 is low level signal to the input of described microprocessor 203 because of unsettled.
In the present embodiment, it is useful signal that the low level signal that the low level signal of the first Enable Pin EN1 output makes USB detection equipment be in holding state and the output of the second Enable Pin EN2 makes power controller 202 be in holding state, certainly, the equipment that can also be detected by USB is in holding state or power controller 202 to be in the signal of holding state be that high level signal is effective, it is not limited to the form of useful signal herein, as long as USB detection equipment can be made to be in holding state for the signal of output and power controller 202 is in holding state, and can implement in conjunction with the content that the present embodiment is instructed and guided, should fall within the scope of protection of the present invention.
Microprocessor herein can also is that general processor, digital signal processor (DSP), special IC (ASIC), field programmable gate array (FPGA) or any combination of other PLD, discrete gate or transistor logic, discrete nextport hardware component NextPort or these parts.Further, microprocessor herein can be any conventional processors, controller, microcontroller or state machine.Microprocessor can also be implemented as the combination of calculating equipment, and such as, DSP and the combination of microprocessor, multi-microprocessor, one or more microprocessor combine DSP core or other this configuration any.
In the present embodiment, when external equipment extracts USB Type-C interface, microprocessor 203 is according to the second voltage of the first power pins B9 input of USB Type-C interface, the second voltage herein is external equipment when extracting USB Type-C interface, and the first power pins is low level signal that is that input described microprocessor because of unsettled.Microprocessor 203 passes through logical judgment, analyze " external equipment non-grafting USB Type-C interface ", then USB detection equipment is made to be in holding state by the first Enable Pin EN1 output low level signal, power controller 202 is made to be in holding state by the second Enable Pin EN2 output low level signal, make USB detection equipment 204 or power controller 202 within 24 hours, need not the most fully detect the work of port, thus be substantially reduced the stand-by power consumption of equipment.
Refer to the structural representation that Fig. 3, Fig. 3 are a kind of USB Type-C interface circuits that the embodiment of the present invention provides.As it is shown on figure 3, this circuit includes that power circuit 31, power controller 32, microprocessor 33, first switch S1, second switch S2 and resistance R.First switchs S1 second source pin A9, the 3rd power pins B4, the 4th power pins A4 and microprocessor 33 respectively with power circuit 31, USB Type-C interface connects, and second switch S2 connects with power circuit 31, microprocessor 33, the first grounding pin A1 of USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 respectively.
In the present embodiment, microprocessor 33 includes four Enable Pins and with reference to earth terminal, first Enable Pin EN1 and USB detection equipment 34 connect, second Enable Pin EN2 and power controller 32 connect, 3rd Enable Pin EN3 and the first switch S1 connect and can control the state that is opened or closed of the first switch S1,4th Enable Pin EN4 and second switch S2 connect and can control the state that is opened or closed of second switch S2, with reference to earth terminal GND_BAT ground connection.
nullIn the present embodiment，Power circuit 31 includes battery V1、Inductance L1、First body diode D1 of the oneth NPN field effect transistor Q1、Oneth NPN field effect transistor Q1、Second body diode D2 of the 2nd NPN field effect transistor Q2、2nd NPN field effect transistor Q2 and electric capacity C1，The positive pole of battery V1 and one end of inductance L1 connect，The positive pole of the other end respectively with the first body diode D1 of inductance L1、The negative pole of the second body diode D2 connects，The negative pole of the first body diode D1 is by the second source pin A9 of the first switch S1 and USB Type-C interface、3rd power pins B4、4th power pins A4 connects，And the negative pole of the first body diode D1 passes through electric capacity C1 ground connection，The negative pole of the Anode and battery V1 of the second body diode D2 connects，And the negative pole of battery V1 passes through second switch S2 and the first grounding pin A1 of USB Type-C interface、Second grounding leg B1、3rd grounding pin A12 and the 4th grounding pin B12 connects.First body diode D1 is parallel to drain electrode and the two ends of source electrode of NPN field effect transistor Q1, and the second body diode D2 is parallel to drain electrode and the two ends of source electrode of the 2nd NPN field effect transistor Q2.Q2 and Q1 herein can also be PNP field effect transistor.
In the present embodiment, power controller 32 is connected with the grid of NPN field effect transistor Q1 and the grid of the 2nd NPN field effect transistor Q2 respectively, the earth terminal GND_BAT ground connection of power controller 32.When power controller 32 works, power controller 32 controls power circuit by output control signal and exports the first voltage VBUS_BAT, and this first voltage VBUS_BAT loads in the second source pin A9 of USB Type-C interface, the 3rd power pins B4, the 4th power pins A4.Wherein, the voltage volt value of this first voltage VBUS_BAT or size of current and direction are power controlled the control of device 32.When power controller 32 is in holding state, the voltage of battery V1 exports on electric capacity C1.Therefore, when power circuit is in holding state, output capacitance C1 voltage over the ground, the i.e. first voltage VBUS_BAT is approximately equal to cell voltage to the voltage of ground end GND.
In the present embodiment, the first power pins B9 and the microprocessor 33 of USB Type-C interface connect, and one end of resistance R1 and microprocessor 33 connect, other end ground connection.Resistance R1 is set, in the case of USB Type-C interface does not access external equipment, it is ensured that the level signal of the PLUGIN input of microprocessor 33 is low level signal, so that the work that this USB Type-C interface circuit can be reliable and stable.
In the present embodiment, microprocessor 33 detects equipment 34 first respectively with USB Type-C interface by USB and detects pin CC1, the second detection pin CC2 connection.USB detection equipment 34 is for detecting type and the direction of insertion of external equipment.In the embodiment that some are possible, USB detection equipment 34 can be USB Type-C interface controller, or other USB detects identification circuit.
In the present embodiment, the first switch S1 controls this first voltage VBUS_BAT loading or disconnects in the second source pin A9 in USB Type-C interface, the 3rd power pins B4, the 4th power pins A4.Break-make between the reference ground end GND_BAT and the output ground GND_C of USB Type-C interface circuit of reference ground end GND_BAT or the USB detection equipment 34 that second switch S1 controls power controller 32.The first switch S1 or second switch S2 herein can be switch arrays module, it is also possible to is single switch, can be electrical switch, it is also possible to be relay switch.In the embodiment that some are possible, as long as the first switch S1 or second switch S2 is to be controlled by electrically, all should fall under the scope of the present invention.
Refer to Fig. 4, Fig. 4 be the embodiment of the present invention one provide external equipment grafting USB Type-C interface time sequential chart.As shown in Figure 4, before t1, owing to not having external equipment to insert USB Type-C interface, the input signal of the PLUGIN input of microprocessor 33 is low level signal, the input signal of the 3rd Enable Pin EN3 is high level, i.e. first switch S1 is in closure state, then the first voltage VBUS_BAT loads in the second source pin A9 of USB Type-C interface, the 3rd power pins B4, the 4th power pins A4 is high level signal.It is VBUS port that labelling the first voltage VBUS_BAT now loads on the port of USB Type-C seam, and now VBUS port has voltage between ground end GND_BAT.The signal of the 4th Enable Pin EN4 output now is low level, i.e. second switch S2 is off, and VBUS port does not has voltage between ground end GND_C.Now the first Enable Pin EN1 and the second Enable Pin EN2 output low level signal, i.e. USB detection equipment and power controller are in holding state.
In the t1 moment, when USB Type-C interface described in described external equipment grafting, due to the first power pins B9 and second source pin A9 short circuit, and the 3rd power pins B4 and the short circuit of the 4th power pins A4, now the signal of input PLUGIN input is high level signal, microprocessor 33 receives the first voltage of the first power pins input from described USB Type-C interface, i.e. receives the first voltage from PLUGIN input, and the first voltage herein is high level signal.The time that the high level signal of PLUGIN input maintains is t1 to t2.
In the t2 moment, the closure state of described first switch S1, by the 3rd Enable Pin EN3 output low level signal, is switched to off-state by microprocessor 33, and now VBUS port does not has voltage between GND_BAT.The off-state of second switch S2 is switched to closure state by the 4th Enable Pin EN4 output high level signal by microprocessor 33, making described USB detection equipment start to detect described external equipment by the first Enable Pin EN1 output high level signal, now GND_C with GND_BAT is connected.
In the t3 moment, after USB detection equipment is according to the protocol detection of Type-C to corresponding equipment, send ID identity identification information, microprocessor 33 is according to this ID identity identification information, power controller is made to start working by the second Enable Pin EN2 output high level signal, by the 3rd Enable Pin EN3 output high level signal, the off-state of described first switch is switched to closure state, now, VBUS port begins with voltage between GND_C, the input signal of PLUGIN input is high level signal again, therefore, this USB Type-C interface circuit starts normally to work.
Refer to Fig. 5, Fig. 5 is the external equipment that the embodiment of the present invention one provides sequential chart when extracting USB Type-C interface.As shown in Figure 5, before t1, external equipment is grafting USB Type-C interface always, the input signal of PLUGIN input maintains high level, first Enable Pin EN1 maintains high level to the input signal of the 4th Enable Pin EN4, then, the voltage between VBUS port to GND_BAT is high level, and the voltage between VBUS port to GND_C is high level.
In the t1 moment, when external equipment extracts USB Type-C interface, microprocessor 33 receives the second voltage of the first power pins B9 input from USB Type-C interface, this second voltage is low level signal, i.e. the input signal of PLUGIN input is become low level signal in the t1 moment by high level signal.Now, the closure state of the first switch S1, by the 3rd Enable Pin EN3 output low level signal, is switched to off-state, be i.e. do not have voltage between VBUS port to GND_C, also do not have voltage between VBUS port to GND_BAT by microprocessor 33.The low level signal exported by the 3rd Enable Pin EN3 when microprocessor 33 is maintained between t1 to t2.
In the t2 moment, after switching off described first, confirm that external equipment has been pulled out, microprocessor 33 makes USB detection equipment be in holding state by the first Enable Pin EN output low level signal, power controller is made to be in holding state by the second Enable Pin EN2 output low level signal, by the 4th Enable Pin EN4 output low level signal, the closure state of second switch S2 switched to off-state, thus reduce power consumption.
In the t3 moment, after being disconnected by second switch S2, the off-state that first switchs is switched to closure state, for accepting signal detection when external equipment inserts next time by the 3rd Enable Pin EN3 output high level signal by microprocessor 33.
The present embodiment is by accessing second switch S2 on the earth terminal of USB Type-C interface, and one of them the power pins line on USB Type-C interface is drawn the input as detection signal, thus realizes automatically detecting inserting and the purpose extracting USB Type-C interface of external equipment.
The present embodiment is by turning off the USB detection equipment under ideal case and power controller, and such USB detection equipment and power controller were without constantly work in 24 hours, thus greatly reduced the stand-by power consumption of whole circuit.
In the present embodiment, when external equipment or this USB Type-C interface circuit break down, microprocessor is by disconnecting the first switch S1 on VBUS port, or is disconnected by the second switch S2 on ground wire, thus protects circuitry.
After the external equipment of the present embodiment is extracted, the two ends of USB Type-C port i.e. VBUS port to GND_C do not have electricity, thus meet the agreement of Type-C.Further, after detecting that external equipment inserts, by opening the first switch S1 and second switch S2, there is electricity at the two ends of Type-C port i.e. VBUS port to GND_C, thus meet the agreement of Type-C.
In each embodiment above-mentioned, as long as technical characteristic involved in each embodiment of the described present invention does not constitutes conflict each other and just can be mutually combined.
Embodiment two
Refer to the structural representation that Fig. 6, Fig. 6 are a kind of USB Type-C interface circuits that the embodiment of the present invention two provides.As shown in Figure 6, this USB Type-C interface circuit includes:
Power circuit 61, for output the first voltage；
Power controller 62, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Microprocessor 63, connect for the first power pins B9, second source pin A9 and described power controller 62 with USB Type-C interface respectively, and when USB Type-C interface does not connect external equipment, receive the first power pins B9 from described USB Type-C interface or the second voltage of second source pin A9 input, make USB detection equipment 64 be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins B9 or second source pin A9 be low level signal to the input of described microprocessor 63 because of unsettled.
Described circuit also includes the first switch S1 and second switch S2；
Described first switchs the S1 the 3rd power pins B4, the 4th power pins A4 and described microprocessor 63 respectively with described power circuit 61, described USB Type-C interface connects；Described second switch S2 connects with described power circuit 61, described microprocessor 63, the first grounding pin A1 of described USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 respectively.
When USB Type-C interface described in described external equipment grafting, described microprocessor 63 receives the first power pins B9 from described USB Type-C interface or the first voltage of second source pin A9 input, by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；The off-state of described second switch S2 is switched to closure state by the 4th Enable Pin EN4 output high level signal by described microprocessor 63, makes described USB detection equipment 64 start to detect described external equipment by the first Enable Pin EN1 output high level signal；After described USB detection equipment identifies described external equipment, described microprocessor 63 makes described power controller 62 start working by the second Enable Pin EN2 output high level signal, by the 3rd Enable Pin EN3 output high level signal, the off-state of described first switch S1 is switched to closure state.
When described external equipment extracts described USB Type-C interface, described microprocessor 63 receives the first power pins B9 from described USB Type-C interface or the second voltage of second source pin A9 input, and by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；After described first switch S1 is disconnected, described microprocessor 63 makes described USB detection equipment 64 be in holding state by the first Enable Pin EN1 output low level signal, make described power controller be in holding state by the second Enable Pin EN2 output low level signal, by the 4th Enable Pin EN4 output low level signal, the closure state of described second switch S2 is switched to off-state；After being disconnected by described second switch S2, the off-state of described first switch S1 is switched to closure state by the 3rd Enable Pin EN3 output high level signal by described microprocessor 63.
In each embodiment above-mentioned, as long as technical characteristic involved in each embodiment of the described present invention does not constitutes conflict each other and just can be mutually combined.
Embodiment three
Refer to the structural representation that Fig. 7, Fig. 7 are a kind of USB Type-C interface circuits that the embodiment of the present invention three provides.As it is shown in fig. 7, this USB Type-C interface circuit includes:
Power circuit 71, for output the first voltage；
Power controller 72, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Microprocessor 73, for connecting with the first power pins of USB Type-C interface, second source pin, the 3rd power pins and described power controller respectively, and when USB Type-C interface does not connect external equipment, receive the first power pins from described USB Type-C interface or second source pin or the second voltage of the 3rd power pins input, make USB detection equipment be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins B9 or second source pin A9 or the 3rd power pins B4 be low level signal to the input of described microprocessor 73 because of unsettled.
Described circuit also includes the first switch S1 and second switch S2；Described first switch S1 connects with described power circuit 71, the 4th power pins A4 of described USB Type-C interface and described microprocessor 73 respectively；Described second switch S2 connects with described power circuit 71, described microprocessor 73, the first grounding pin A1 of described USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 respectively.
When USB Type-C interface described in described external equipment grafting, described microprocessor 73 receives the first power pins B9 from described USB Type-C interface or second source pin A9 or the first voltage of the 3rd power pins B4 input, by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；The off-state of described second switch S2 is switched to closure state by the 4th Enable Pin EN4 output high level signal by described microprocessor 73, makes described USB detection equipment 74 start to detect described external equipment by the first Enable Pin EN1 output high level signal；After described USB detection equipment 74 identifies described external equipment, described microprocessor 73 makes described power controller 72 start working by the second Enable Pin EN2 output high level signal, by the 3rd Enable Pin EN3 output high level signal, the off-state of described first switch S1 is switched to closure state.
When described external equipment extracts described USB Type-C interface, described microprocessor 73 receives the first power pins B9 from described USB Type-C interface or second source pin A9 or the second voltage of the 3rd power pins B4 input, and by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；After described first switch S1 is disconnected, described microprocessor 73 makes described USB detection equipment 74 be in holding state by the first Enable Pin EN1 output low level signal, make described power controller 72 be in holding state by the second Enable Pin EN2 output low level signal, by the 4th Enable Pin EN4 output low level signal, the closure state of described second switch S2 is switched to off-state；After being disconnected by described second switch S2, the off-state of described first switch S1 is switched to closure state by the 3rd Enable Pin EN3 output high level signal by described microprocessor 73.
In each embodiment above-mentioned, as long as technical characteristic involved in each embodiment of the described present invention does not constitutes conflict each other and just can be mutually combined.
Embodiment four
Refer to the structural representation that Fig. 8, Fig. 8 are a kind of USB Type-C interface control units that the embodiment of the present invention four provides.This device includes:
Power circuit 81, for output the first voltage；
Power controller 82, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Type-C interface controller 83, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and detects external equipment；
Microprocessor 84, it is connected for the first power pins and described power controller with USB Type-C interface respectively, and when USB Type-C interface does not connect external equipment, receive the second voltage that the first power pins from described USB Type-C interface inputs, make described Type-C interface controller be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal.Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins B9 is low level signal to the input of described microprocessor 84 because of unsettled.
Described device also includes the first switch S1 and second switch S2；Described first switchs S1 second source pin A9, the 3rd power pins B4, the 4th power pins A4 and described microprocessor 84 respectively with described power circuit 81, USB Type-C interface connects；Described second switch S2 connects with described power circuit 81, described microprocessor 84, the first grounding pin A1 of described USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 respectively.
When USB Type-C interface described in described external equipment grafting, described microprocessor 84 receives the first voltage of the first power pins B9 input from described USB Type-C interface, by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；The off-state of described second switch S2 is switched to closure state by the 4th Enable Pin EN4 output high level signal by described microprocessor 84, makes described Type-C interface controller 83 start to detect described external equipment by the first Enable Pin EN1 output high level signal；After described Type-C interface controller 83 identifies described external equipment, described microprocessor 84 makes described power controller 82 start working by the second Enable Pin EN2 output high level signal, by the 3rd Enable Pin EN3 output high level signal, the off-state of described first switch S1 is switched to closure state；
When described external equipment extracts described USB Type-C interface, described microprocessor 84 receives the second voltage of the first power pins B9 input from described USB Type-C interface, and by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；After described first switch S1 is disconnected, described microprocessor 84 makes described Type-C interface controller 83 be in holding state by the first Enable Pin EN1 output low level signal, make described power controller be in holding state by the second Enable Pin EN2 output low level signal, by the 4th Enable Pin EN4 output low level signal, the closure state of described second switch S2 is switched to off-state；After being disconnected by described second switch S2, the off-state of described first switch S1 is switched to closure state by the 3rd Enable Pin EN3 output high level signal by described microprocessor 84.
In each embodiment above-mentioned, as long as technical characteristic involved in each embodiment of the described present invention does not constitutes conflict each other and just can be mutually combined.
Embodiment five
Refer to the structural representation that Fig. 9, Fig. 9 are a kind of USB Type-C interface control units that the embodiment of the present invention five provides.As it is shown in figure 9, this device includes:
Power circuit 91, for output the first voltage；
Power controller 92, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Type-C interface controller 93, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and detects external equipment；
Microprocessor 94, for connecting with the first power pins of USB Type-C interface, second source pin and described power controller respectively, and when USB Type-C interface does not connect external equipment, receive the first power pins from described USB Type-C interface or the second voltage of second source pin input, make Type-C interface controller be in holding state by the first Enable Pin output low level signal, make described power controller be in holding state by the second Enable Pin output low level signal.Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins B9 or second source pin A9 be low level signal to the input of described microprocessor 94 because of unsettled.
Described device also includes the first switch S1 and second switch S2；Described first switchs the S1 the 3rd power pins B4, the 4th power pins A4 and described microprocessor 94 respectively with described power circuit 91, described USB Type-C interface connects；Described second switch S2 connects with described power circuit 91, described microprocessor 94, the first grounding pin A1 of described USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 respectively.
When USB Type-C interface described in described external equipment grafting, described microprocessor 94 receives the first power pins B9 from described USB Type-C interface or the first voltage of second source pin A9 input, by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；The off-state of described second switch S2 is switched to closure state by the 4th Enable Pin EN4 output high level signal by described microprocessor 94, makes described Type-C interface controller 92 start to detect described external equipment by the first Enable Pin EN1 output high level signal；After described Type-C interface controller 92 identifies described external equipment, described microprocessor 94 makes described power controller 92 start working by the second Enable Pin EN2 output high level signal, by the 3rd Enable Pin EN3 output high level signal, the off-state of described first switch S1 is switched to closure state.
When described external equipment extracts described USB Type-C interface, described microprocessor 94 receives the first power pins B9 from described USB Type-C interface or the second voltage of second source pin A9 input, and by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；After described first switch S1 is disconnected, described microprocessor 94 makes described Type-C interface controller 93 be in holding state by the first Enable Pin EN1 output low level signal, make described power controller 92 be in holding state by the second Enable Pin EN2 output low level signal, by the 4th Enable Pin EN4 output low level signal, the closure state of described second switch S2 is switched to off-state；After being disconnected by described second switch S2, the off-state of described first switch S1 is switched to closure state by the 3rd Enable Pin EN3 output high level signal by described microprocessor 94.
In each embodiment above-mentioned, as long as technical characteristic involved in each embodiment of the described present invention does not constitutes conflict each other and just can be mutually combined.
Embodiment six
Refer to the structural representation that Figure 10, Figure 10 are a kind of USB Type-C interface control units that the embodiment of the present invention six provides.As shown in Figure 10, this device includes:
Power circuit 101, for output the first voltage；
Power controller 102, for connecting with described power circuit, and exports control signal to control described power circuit described first voltage of output；
Type-C interface controller 103, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and detects external equipment；
Microprocessor 104, for respectively with the first power pins B9 of USB Type-C interface, second source pin A9, 3rd power pins B4 and described power controller 102 connect, and when USB Type-C interface does not connect external equipment, receive the first power pins B9 from described USB Type-C interface or second source pin A9 or the second voltage of the 3rd power pins B4 input, Type-C interface controller is made to be in holding state by the first Enable Pin EN1 output low level signal, described power controller 102 is made to be in holding state by the second Enable Pin EN2 output low level signal.Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins B9 or second source pin A9 or the 3rd power pins B4 be low level signal to the input of described microprocessor 104 because of unsettled.
Described device also includes the first switch S1 and second switch S2；Described first switch S1 connects with described power circuit 101, the 4th power pins A4 of described USB Type-C interface and described microprocessor 104 respectively；Described second switch S2 connects with described power circuit 101, described microprocessor 104, the first grounding pin A1 of described USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 respectively.
When USB Type-C interface described in described external equipment grafting, described microprocessor 104 receives the first power pins B9 from described USB Type-C interface or second source pin A9 or the first voltage of the 3rd power pins B4 input, by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；The off-state of described second switch S2 is switched to closure state by the 4th Enable Pin EN4 output high level signal by described microprocessor 104, makes described Type-C interface controller 103 start to detect described external equipment by the first Enable Pin EN1 output high level signal；After described Type-C interface controller 103 identifies described external equipment, described microprocessor 104 makes described power controller 102 start working by the second Enable Pin EN2 output high level signal, by the 3rd Enable Pin EN3 output high level signal, the off-state of described first switch S1 is switched to closure state；
When described external equipment extracts described USB Type-C interface, described microprocessor 104 receives the first power pins B9 from described USB Type-C interface or second source pin A9 or the second voltage of the 3rd power pins B4 input, and by the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；After described first switch S1 is disconnected, described microprocessor 104 makes described Type-C interface controller 103 be in holding state by the first Enable Pin EN1 output low level signal, make described power controller 102 be in holding state by the second Enable Pin EN2 output low level signal, by the 4th Enable Pin EN4 output low level signal, the closure state of described second switch S2 is switched to off-state；After being disconnected by described second switch S2, the off-state of described first switch S1 is switched to closure state by the 3rd Enable Pin EN3 output high level signal by described microprocessor 104.
In each embodiment above-mentioned, as long as technical characteristic involved in each embodiment of the described present invention does not constitutes conflict each other and just can be mutually combined.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.

Claims (12)

1. a USB Type-C interface circuit, it is characterised in that described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control institute State power circuit and export described first voltage；
Microprocessor, for respectively with the first power pins of USB Type-C interface and described power control Device processed connects, and when USB Type-C interface does not connect external equipment, receives from described USB Second voltage of the first power pins input of Type-C interface, by the first Enable Pin output low level Signal makes USB detection equipment be in holding state, makes institute by the second Enable Pin output low level signal State power controller and be in holding state；Wherein, described second voltage is that described external equipment extracts USB During Type-C interface, the first power pins is low level signal that is that input described microprocessor because of unsettled.
Circuit the most according to claim 1, it is characterised in that
Described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the second source of described USB Type-C interface Pin, the 3rd power pins, the 4th power pins and described microprocessor connect；Described second opens Close respectively with described power circuit, described microprocessor, the first ground connection of described USB Type-C interface Pin, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from institute State the first voltage of the first power pins input of USB Type-C interface, exported by the 3rd Enable Pin Low level signal, switches to off-state by the closure state of described first switch；Described microprocessor By the 4th Enable Pin output high level signal, the off-state of described second switch is switched to closed form State, by the first Enable Pin output high level signal make described USB detection equipment start to detect described outside Connect equipment；Described USB detection is after equipment identifies described external equipment, and described microprocessor is by the Two Enable Pin output high level signals make described power controller start working, defeated by the 3rd Enable Pin Go out high level signal and the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described Second voltage of the first power pins input of USB Type-C interface, and defeated by the 3rd Enable Pin Go out low level signal, the closure state of described first switch is switched to off-state；By described first After switching off, described microprocessor makes described USB by the first Enable Pin output low level signal Detection equipment is in holding state, makes described power control by the second Enable Pin output low level signal Device is in holding state, by the 4th Enable Pin output low level signal by the Guan Bi of described second switch State switches to off-state；After being disconnected by described second switch, described microprocessor passes through the 3rd The off-state of described first switch is switched to closure state by Enable Pin output high level signal.
3. a USB Type-C interface circuit, it is characterised in that described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control institute State power circuit and export described first voltage；
Microprocessor, draws for the first power pins, second source with USB Type-C interface respectively Foot and described power controller connect, and when USB Type-C interface does not connect external equipment, Receive the first power pins from described USB Type-C interface or the second of the input of second source pin Voltage, makes USB detection equipment be in holding state by the first Enable Pin output low level signal, logical Crossing the second Enable Pin output low level signal makes described power controller be in holding state；Wherein, institute Stating the second voltage is described external equipment when extracting USB Type-C interface, the first power pins or second Power pins is low level signal that is that input described microprocessor because of unsettled.
Circuit the most according to claim 3, it is characterised in that
Described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 3rd power supply of described USB Type-C interface Pin, the 4th power pins and described microprocessor connect；Described second switch respectively with described merit Rate circuit, described microprocessor, the first grounding pin of described USB Type-C interface, the second ground connection Foot, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from institute State the first power pins or first voltage of second source pin input of USB Type-C interface, pass through 3rd Enable Pin output low level signal, switches to off-state by the closure state of described first switch； Described microprocessor exports high level signal by the off-state of described second switch by the 4th Enable Pin Switch to closure state, make described USB detection equipment open by the first Enable Pin output high level signal Begin to detect described external equipment；After described USB detection equipment identifies described external equipment, described micro- Processor makes described power controller start working by the second Enable Pin output high level signal, passes through The off-state of described first switch is switched to closure state by the 3rd Enable Pin output high level signal；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described First power pins of USB Type-C interface or the second voltage of second source pin input, and lead to Cross the 3rd Enable Pin output low level signal, switch to disconnect shape by the closure state of described first switch State；After switching off described first, described microprocessor passes through the first Enable Pin output low level Signal makes described USB detection equipment be in holding state, by the second Enable Pin output low level signal Described power controller is made to be in holding state, by the 4th Enable Pin output low level signal by described The closure state of second switch switches to off-state；After described second switch is disconnected, described micro- The off-state of described first switch is switched to by processor by the 3rd Enable Pin output high level signal Closure state.
5. a USB Type-C interface circuit, it is characterised in that described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control institute State power circuit and export described first voltage；
Microprocessor, draws for the first power pins, second source with USB Type-C interface respectively Foot, the 3rd power pins and described power controller connect, and when USB Type-C interface does not has When connecting external equipment, receive the first power pins from described USB Type-C interface or second source Pin or the second voltage of the 3rd power pins input, made by the first Enable Pin output low level signal USB detection equipment is in holding state, makes described power by the second Enable Pin output low level signal Controller is in holding state；Wherein, described second voltage is that described external equipment extracts USB Type-C During interface, the first power pins or second source pin or the 3rd power pins because of unsettled and to described micro- The low level signal of processor input.
Circuit the most according to claim 5, it is characterised in that
Described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 4th power supply of described USB Type-C interface Pin and described microprocessor connect；Described second switch respectively with described power circuit, described micro- Processor, the first grounding pin of described USB Type-C interface, the second grounding leg, the 3rd grounding lead Foot and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from institute State the first power pins of USB Type-C interface or second source pin or the input of the 3rd power pins The first voltage, by the 3rd Enable Pin output low level signal, by the closed form of described first switch State switches to off-state；Described microprocessor exports high level signal by described by the 4th Enable Pin The off-state of second switch switches to closure state, is made by the first Enable Pin output high level signal Described USB detection equipment starts to detect described external equipment；Described USB detection equipment identifies described After external equipment, described microprocessor makes described power control by the second Enable Pin output high level signal Device processed is started working, by the 3rd Enable Pin output high level signal by the disconnection shape of described first switch State switches to closure state；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described The of first power pins of USB Type-C interface or second source pin or the input of the 3rd power pins Two voltages, and by the 3rd Enable Pin output low level signal, by the closed form of described first switch State switches to off-state；After switching off described first, described microprocessor makes by first Described USB detection equipment can be made to be in holding state, by the second Enable Pin by end output low level signal Output low level signal makes described power controller be in holding state, low by the 4th Enable Pin output The closure state of described second switch is switched to off-state by level signal；Described second switch is broken After opening, described microprocessor is switched described first by the 3rd Enable Pin output high level signal Off-state switches to closure state.
7. a USB Type-C interface control unit, it is characterised in that described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control institute State power circuit and export described first voltage；
Type-C interface controller, for the first detection pin and second with USB Type-C interface Detection pin connects, and detects external equipment；
Microprocessor, for respectively with the first power pins of USB Type-C interface and described power control Device processed connects, and when USB Type-C interface does not connect external equipment, receives from described USB Second voltage of the first power pins input of Type-C interface, by the first Enable Pin output low level Signal makes described Type-C interface controller be in holding state, by the second Enable Pin output low level Signal makes described power controller be in holding state；Wherein, described second voltage is described external set For when extracting USB Type-C interface, described microprocessor is inputted by the first power pins because of unsettled Low level signal.
Device the most according to claim 7, it is characterised in that
Described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the second source of described USB Type-C interface Pin, the 3rd power pins, the 4th power pins and described microprocessor connect；Described second opens Close respectively with described power circuit, described microprocessor, the first ground connection of described USB Type-C interface Pin, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from institute State the first voltage of the first power pins input of USB Type-C interface, exported by the 3rd Enable Pin Low level signal, switches to off-state by the closure state of described first switch；Described microprocessor By the 4th Enable Pin output high level signal, the off-state of described second switch is switched to closed form State, makes described Type-C interface controller start to detect institute by the first Enable Pin output high level signal State external equipment；After described Type-C interface controller identifies described external equipment, described micro-process Device makes described power controller start working, by the 3rd by the second Enable Pin output high level signal The off-state of described first switch is switched to closure state by Enable Pin output high level signal；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described Second voltage of the first power pins input of USB Type-C interface, and defeated by the 3rd Enable Pin Go out low level signal, the closure state of described first switch is switched to off-state；By described first After switching off, described microprocessor makes described by the first Enable Pin output low level signal Type-C interface controller is in holding state, is made described by the second Enable Pin output low level signal Power controller is in holding state, is opened described second by the 4th Enable Pin output low level signal The closure state closed switches to off-state；After described second switch is disconnected, described microprocessor By the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closed form State.
9. a USB Type-C interface control unit, it is characterised in that described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control institute State power circuit and export described first voltage；
Type-C interface controller, for the first detection pin and second with USB Type-C interface Detection pin connects, and detects external equipment；
Microprocessor, draws for the first power pins, second source with USB Type-C interface respectively Foot and described power controller connect, and when USB Type-C interface does not connect external equipment, Receive the first power pins from described USB Type-C interface or the second of the input of second source pin Voltage, makes Type-C interface controller be in holding state by the first Enable Pin output low level signal, Described power controller is made to be in holding state by the second Enable Pin output low level signal；Wherein, Described second voltage is described external equipment when extracting USB Type-C interface, the first power pins or Two power pins are low level signal that is that input described microprocessor because of unsettled.
Device the most according to claim 9, it is characterised in that
Described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 3rd power supply of described USB Type-C interface Pin, the 4th power pins and described microprocessor connect；Described second switch respectively with described merit Rate circuit, described microprocessor, the first grounding pin of described USB Type-C interface, the second ground connection Foot, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from institute State the first power pins or first voltage of second source pin input of USB Type-C interface, pass through 3rd Enable Pin output low level signal, switches to off-state by the closure state of described first switch； Described microprocessor exports high level signal by the off-state of described second switch by the 4th Enable Pin Switch to closure state, make described Type-C Interface Controller by the first Enable Pin output high level signal Device starts to detect described external equipment；After described Type-C interface controller identifies described external equipment, Described microprocessor makes described power controller start working by the second Enable Pin output high level signal, By the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closed form State；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described First power pins of USB Type-C interface or the second voltage of second source pin input, and lead to Cross the 3rd Enable Pin output low level signal, switch to disconnect shape by the closure state of described first switch State；After switching off described first, described microprocessor passes through the first Enable Pin output low level Signal makes described Type-C interface controller be in holding state, by the second Enable Pin output low level Signal makes described power controller be in holding state, will by the 4th Enable Pin output low level signal The closure state of described second switch switches to off-state；After described second switch is disconnected, institute State microprocessor the off-state of described first switch to be cut by the 3rd Enable Pin output high level signal Shift to closure state.
11. 1 kinds of USB Type-C interface control units, it is characterised in that described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control institute State power circuit and export described first voltage；
Type-C interface controller, for the first detection pin and second with USB Type-C interface Detection pin connects, and detects external equipment；
Microprocessor, draws for the first power pins, second source with USB Type-C interface respectively Foot, the 3rd power pins and described power controller connect, and when USB Type-C interface does not has When connecting external equipment, receive the first power pins from described USB Type-C interface or second source Pin or the second voltage of the 3rd power pins input, made by the first Enable Pin output low level signal Type-C interface controller is in holding state, is made described by the second Enable Pin output low level signal Power controller is in holding state；Wherein, described second voltage is that described external equipment extracts USB During Type-C interface, the first power pins or second source pin or the 3rd power pins are because of unsettled and right The low level signal of described microprocessor input.
12. devices according to claim 11, it is characterised in that
Described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 4th power supply of described USB Type-C interface Pin and described microprocessor connect；Described second switch respectively with described power circuit, described micro- Processor, the first grounding pin of described USB Type-C interface, the second grounding leg, the 3rd grounding lead Foot and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from institute State the first power pins of USB Type-C interface or second source pin or the input of the 3rd power pins The first voltage, by the 3rd Enable Pin output low level signal, by the closed form of described first switch State switches to off-state；Described microprocessor exports high level signal by described by the 4th Enable Pin The off-state of second switch switches to closure state, is made by the first Enable Pin output high level signal Described Type-C interface controller starts to detect described external equipment；Described Type-C interface controller After identifying described external equipment, described microprocessor is made by the second Enable Pin output high level signal Described power controller is started working, and is opened described first by the 3rd Enable Pin output high level signal The off-state closed switches to closure state；
Or, when described external equipment extracts described USB Type-C interface, and described microprocessor receives From the first power pins of described USB Type-C interface or second source pin or the 3rd power pins Second voltage of input, and by the 3rd Enable Pin output low level signal, by described first switch Closure state switch to off-state；After switching off described first, described microprocessor leads to Crossing the first Enable Pin output low level signal makes described Type-C interface controller be in holding state, logical Crossing the second Enable Pin output low level signal makes described power controller be in holding state, by the 4th The closure state of described second switch is switched to off-state by Enable Pin output low level signal；By institute After stating second switch disconnection, described microprocessor exports high level signal by institute by the 3rd Enable Pin The off-state stating the first switch switches to closure state.
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