CN114498202A - Interface circuit device and equipment - Google Patents

Abstract

The invention discloses an interface circuit device and equipment. The plug-in detection module is used for detecting the plug-in of a Type C plug device through one grounding pin of a Type C socket, and setting the grounding pin to be a low level when the Type C plug device is plugged in; the power management module is used for turning on a detection signal of a parameter configuration pin when the grounding pin is detected to be at a low level, turning off the detection signal of the parameter configuration pin when the grounding pin is detected not to be at the low level, and setting the parameter configuration pin to be at the low level; and the baseband processing module is configured to configure the ground pin as a power channel when the ground pin is detected to be at a low level or when a start signal of the parameter configuration pin sent by the power management module is detected. The invention effectively improves the ESD and Surge resistance of the Type C interface, does not need to design a protective circuit which is more complex and has higher cost, and greatly enhances the product strength and the user experience.

Description

Interface circuit device and equipment

Technical Field

The present invention relates to the field of mobile communications, and in particular, to an interface circuit apparatus and device.

Background

At present, the plug of USBType C interface can not distinguish the positive and negative and insert the socket, has embodied the convenience of Type C interface. The reverse plug identification, the device Type detection and the information communication in the Type C interface are all realized by two CC signals (CC1 and CC2, Configuration Channel, parameter Configuration) for monitoring whether a USB device is plugged in, determining a power role, determining a data role, discovering and configuring, and configuring optional candidate modes.

In the prior art, because the Type C terminal can supply power to the external device (Source), and also can support the external power to charge for the local machine (Sink), the CC signal on the Type C socket interface of the terminal needs to periodically detect the insertion condition of the external device, and then determines whether to supply power to the external device or to receive power from the external power supply. Therefore, the CC signal needs to have an operation detection voltage in a state where the terminal is turned on.

However, after the device is powered on, the CC signal of the USB Type C always has an operating voltage, the detection and communication module of the device needs to operate in real time, and when an ESD (Electro-Static discharge) test is performed, or a user with Static electricity touches the Type C interface with a hand, or inserts an external Type Plug interface, the ESD or the gather is easily introduced to cause an impact on the CC signal module circuit on the USB Type C socket, and the CC signal circuit in operation has the weakest performance when bearing the impact of the ESD and the gather, and is easily damaged.

In the prior art, in order to solve the above technical problems and improve the ESD and surge resistance, a circuit with a complex design and a high cost is often required to provide protection.

It can be seen that, in the existing scheme, on one hand, the additionally designed protection circuit can increase the product complexity and greatly affect the cost, and on the other hand, if the protection circuit is not improved, certain influence can be caused on the product design and performance.

Disclosure of Invention

In order to solve the above technical drawbacks in the prior art, the present invention provides an interface circuit apparatus, including:

the plug-in detection module is used for detecting the plug-in of a Type C plug device through one grounding pin of a Type C socket, and setting the grounding pin to be a low level when the Type C plug device is plugged in;

the power management module is used for starting a detection signal of a parameter configuration pin when detecting that the grounding pin is at a low level, and closing the detection signal of the parameter configuration pin when detecting that the grounding pin is not at the low level, and setting the parameter configuration pin to be at the low level;

and the baseband processing module configures the ground pin into a power channel when detecting that the ground pin is at a low level or detecting a start signal of the parameter configuration pin sent by the power management module.

Optionally, the insertion detection module is further configured to set any one of the four ground pins of the Type C socket as a detection pin.

Optionally, the insertion detection module is further configured to set a detection signal of a preset voltage amplitude at the detection pin when the Type C plug device is not inserted.

Optionally, the insertion detection module is further configured to set the detection pin to a low level when the Type C plug device is inserted, and send a device insertion signal to the power management module after a preset delay time.

Optionally, the power management module is further configured to, when receiving the device insertion signal sent by the insertion detection module, turn on a detection signal of the parameter configuration pin.

Optionally, the baseband processing module is further configured to detect a Type of the Type C plug device, and control power management communication with the Type C plug device.

Optionally, the insertion detection module includes a comparison circuit, a level matching circuit, and a power channel switching circuit.

Optionally, the comparison circuit is configured to generate an insertion signal of the Type C plug device through a level polarity inversion output by the comparison circuit when the detection pin input is zero.

Optionally, the comparison circuit is further configured to, when the detection pin recovers the voltage division level, generate a pulling-out signal of the Type C plug device by inverting the level polarity output by the comparison circuit again.

The invention also proposes an apparatus comprising an interface circuit arrangement as defined in any one of the above.

The interface circuit device and the equipment implement the invention, wherein the insertion detection module is used for detecting the insertion of a Type C plug equipment through one grounding pin of a Type C socket, and setting the grounding pin to be a low level when the Type C plug equipment is inserted; the power management module is used for turning on a detection signal of a parameter configuration pin when the grounding pin is detected to be at a low level, turning off the detection signal of the parameter configuration pin when the grounding pin is detected not to be at the low level, and setting the parameter configuration pin to be at the low level; and the baseband processing module is configured to configure the ground pin as a power channel when the ground pin is detected to be at a low level or when a start signal of the parameter configuration pin sent by the power management module is detected. The invention effectively improves the ESD and Surge resistance of the Type C interface, does not need to design a protective circuit which is more complex and has higher cost, and greatly enhances the product strength and the user experience.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic diagram of a hardware structure of a mobile terminal according to the present invention;

fig. 2 is a communication network system architecture diagram provided by an embodiment of the present invention;

FIG. 3 is a block diagram of a first embodiment of the interface circuit arrangement of the present invention;

FIG. 4 is a block diagram of a second embodiment of the interface circuit arrangement of the present invention;

fig. 5 is a circuit diagram of a third embodiment of the interface circuit arrangement of the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.

The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module and the like, which will not be described in detail herein.

In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.

The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.

The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.

Based on the above mobile terminal hardware structure and communication network system, the present invention provides various embodiments of the method.

Example one

Fig. 3 is a block diagram of a first embodiment of the interface circuit arrangement of the present invention. This embodiment proposes an interface circuit arrangement, the arrangement comprising:

the insertion detection module 10 detects insertion of a Type C plug device through one ground pin of a Type C socket, and sets the ground pin to a low level when the Type C plug device is inserted;

the power management module 20 is configured to turn on a detection signal of the parameter configuration pin when detecting that the ground pin is at a low level, turn off the detection signal of the parameter configuration pin when detecting that the ground pin is not at the low level, and set the parameter configuration pin to be at the low level;

the baseband processing module 30 configures the ground pin as a power channel when detecting that the ground pin is at a low level or when detecting a start signal of the parameter configuration pin sent by the power management module.

In this embodiment, by designing the insertion detection module 10 of the Type C Plug, instead of recognizing insertion detection through the CC signal, whether the Type C Plug is inserted or not can be intelligently realized, and when the Type C Plug is not inserted or is inserted instantaneously, the PD module, i.e., the power management module 20, is turned off, the CC signal is stopped from working, and the configuration is low level; when the PD module is closed, the CC signal is configured to be low level. Therefore, the ESD and Sugre resistance of the PD module at the moment is effectively enhanced.

In the present embodiment, one PIN out of four GND PINs of the USB TYPE C socket is used as a plug insertion detection PIN.

In this embodiment, when the plug is not inserted into the TYPE C socket, a GND PIN of the TYPE C socket at this time is not regarded as the GND attribute, but as an insertion detection PIN on which a signal with a small voltage amplitude exists, and optionally, the voltage is smaller than the CC signal operating voltage.

In this embodiment, when the plug inserts, because four GND PINs are same electrical property on the plug, and for GND, the level on the plug insert detection PIN on the Type C seat can be put low, inserts detection circuitry this moment and can the discernment equipment insert, and then the system can start PD module work after delaying for a certain time, opens the CC signal promptly for detect the Type of inserting equipment and carry out PD communication. Further, if the charging power supply equipment is judged to be the charging power supply equipment, a power switch inserted into the detection PIN channel on the Type C socket is turned on, the Type C GND PIN channel is configured to be a power GND channel, a GND key reflow function is achieved, and the inherent definition attribute of the Type C socket is returned.

In this embodiment, when the plug is unplugged from the Type C socket of the terminal, and the terminal can detect that the terminal is unplugged at this time, the PD module is immediately turned off, the CC signal is stopped being output, and the CC signal is configured to be at a low level, so as to improve the capability of resisting ESD and Sugre; at this time, the power switch of the insertion detection PIN channel on the terminal Type C socket is closed, and the GND PIN channel of the Type C socket is continuously configured to be a Type C plug insertion detection PIN.

The plug insertion detection device has the advantages that plug insertion is effectively recognized in advance by reasonably using one GND PIN of the Type C socket as the plug recognition PIN and designing the plug insertion detection device; when the situation that the Plug is not plugged into the Type C socket is detected, the BB processor, namely the baseband processing module 30 controls the PM module to close the CC signal, the CC signal is configured to be at a low level, the CC signal is prevented from working when the Type C Plug is not plugged into the Type C socket, and the ESD resistance capability of the CC signal during the period that the Plug is not plugged and the ESD and Sugre resistance capability brought by the moment that the Plug is plugged are effectively improved; when the fact that a plug is inserted into a Type C socket is detected, a BB processor delays a period of time T to control a PM module to start a CC signal, the Type of the inserted equipment is identified, and then related normal process operation is executed; when the system needs a certain current value to pass through a Type C socket, the BB processor can switch the GND PIN used for detecting the insertion event by the Type C to the GND attribute by starting a Type C power channel switching circuit, so that the mode C multiplexing GND PIN is switched from the signal detection function to the current circulation channel which originally belongs to the GND function of the Type C; this embodiment has guaranteed the commonality of Type C socket and Type C data line through the state whether the insertion of discernment Type C Plug, and the reasonable operating condition who sets up the CC signal has effectively promoted ESD and the Sugre problem that anti ESD ability and the Plug of CC signal were brought in the twinkling of an eye when Type C socket did not insert the Plug.

Example two

In this embodiment, the insertion detection module 10 is further configured to set any one of the four ground pins of the Type C socket as a detection pin.

In this embodiment, the insertion detection module 10 is further configured to set a detection signal with a preset voltage amplitude at the detection pin when no Type C plug device is inserted.

In this embodiment, the insertion detection module 10 is further configured to set the detection pin to a low level when the Type C plug device is inserted, and send a device insertion signal to the power management module 20 after a preset delay time.

In this embodiment, the power management module 20 is further configured to, when receiving the device insertion signal sent by the insertion detection module 10, turn on a detection signal of the parameter configuration pin.

In this embodiment, the baseband processing module 30 is further configured to detect a Type of the Type C plug device, and control power management communication with the Type C plug device.

Please refer to fig. 4, which is a block diagram of an interface circuit apparatus according to a second embodiment of the present invention.

The scheme is composed of a USB TYPE C socket, a Plug insertion detection module, a PM module (comprising a CC signal control part) and a BB processing controller module (AP/MODEM). The TYPE C USB socket is a standard USB TYPE C socket, and In this embodiment, one PIN of four GND PINs of the TYPE C USB socket is designed as a PIN (TYPE C _ GND _ Plug _ In) of a special function signal, which is used to detect the insertion of a TYPE C Plug device; when TYPE C Plug device is plugged In, signal TYPE C _ GND _ Plug _ In In TYPE C USB socket will be put low level. In this embodiment, the PM module includes a CC signal control unit for managing the turning on and off of the CC signal of the PD module, and the device identification operation; when the Plug detection module does not detect Plug insertion, the PM module closes the CC signal and configures the CC signal to be low level, so that the ESD and Sugre resistance is improved; when the Plug insertion detection module detects that the Plug is inserted, the PM module starts a CC detection signal and configures the CC detection signal into a normal working state. In this embodiment, the BB processor module is configured to manage the entire operation flow, receive the insertion detection signal (Plug _ In _ det _ N) through the PM, and notify the BB processor module to execute the operation; the insertion detection signal (Plug _ In _ det _ N) can also be directly provided to the BB processor module for processing; similarly, the charging mode GND path opening control signal (Chg _ Type C _ GND _ EN) may be output by the PM module to the "Plug insertion detection module", and may also be output by the BB processor to the "Plug insertion detection module". In this embodiment, the Plug insertion detection module is configured to identify an insertion event of the TYPE C Plug and report the insertion event to the PM (BB processing), and switch the TYPE C _ GND _ Plug _ In PIN on the TPYEC socket to the power channel (GND attribute) when the condition is met (e.g., when the required operating current is greater than a certain value, for example, 5A × 0.75), so that the TYPE C interface passes through a large current, and the operating current requirement of the TYPE C is met, that is, four GND PINs meet the requirement of 5A current, and each PIN can pass through 1.25A.

EXAMPLE III

In this embodiment, the insertion detection module includes a comparison circuit, a level matching circuit, and a power channel switching circuit.

In this embodiment, the comparison circuit is configured to generate the insertion signal of the Type C plug device through a polarity inversion of a level output by the comparison circuit when the input of the detection pin is zero.

In this embodiment, the comparison circuit is further configured to generate a pull-out signal of the Type C plug device by inverting the level polarity output by the comparison circuit again when the detection pin recovers the voltage level.

Please refer to fig. 5, which shows a circuit diagram of an interface circuit apparatus according to a third embodiment of the present invention. In the present embodiment, the circuit includes a comparison circuit (D1R 1R 2), a level matching circuit (D2 and R3), and a power channel switching circuit (D3); d1 is a comparator module, Vref is a comparator reference voltage, R1 and R2 are voltage dividing circuits, the voltage after voltage division is higher than Vref, and when Type C _ GND _ Plug _ In is 0, the output of the comparing circuit is inverted; at this time, the output Plug _ In _ det _ N of the level matching circuit also generates level polarity inversion for informing the processor that an insertion event occurs; when the TYPE C Plug is pulled out, when the TYPE C _ GND _ Plug _ In recovers the voltage division level, the output of the comparison circuit is overturned; at this time, the output Plug _ In _ det _ N of the level matching circuit also generates level polarity inversion for informing the processor of the occurrence of a pull-out event; when the Plug-In event occurs, if the system requires a large amount of usb Type C interface power and the current exceeds a certain value, for example, 5A × 0.75 (i.e., full current of 3 GNDs), the BB processor will notify the PM to turn on the D3 MOS FET, and turn on the Type C _ GND _ Plug _ In through the MOS transistor to configure the Type C _ GND _ Plug _ In as the GND attribute, thereby implementing the current flowing requirement of the Type C socket GND.

Example four

Based on the above embodiment, the present invention further provides an apparatus including the interface circuit apparatus as described in any one of the above. It should be noted that the above device embodiment and the apparatus embodiment belong to the same concept, and specific implementation processes thereof are detailed in the apparatus embodiment, and technical features in the apparatus embodiment are applicable in the device embodiment, which is not described herein again.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. An interface circuit arrangement, the arrangement comprising:

the plug-in detection module is used for detecting the plug-in of a Type C plug device through one grounding pin of a Type C socket, and setting the grounding pin to be a low level when the Type C plug device is plugged in;

the power management module is used for starting a detection signal of a parameter configuration pin when detecting that the grounding pin is at a low level, and closing the detection signal of the parameter configuration pin when detecting that the grounding pin is not at the low level, and setting the parameter configuration pin to be at the low level;

and the baseband processing module configures the ground pin into a power channel when detecting that the ground pin is at a low level or detecting a start signal of the parameter configuration pin sent by the power management module.

2. The interface circuit apparatus according to claim 1, wherein the insertion detection module is further configured to set any one of four ground pins of the Type C socket as a detection pin.

3. The interface circuit apparatus according to claim 2, wherein the insertion detection module is further configured to set a detection signal with a preset voltage amplitude at the detection pin when no Type C plug device is inserted.

4. The interface circuit apparatus according to claim 3, wherein the insertion detection module is further configured to set the detection pin to a low level when the Type C plug device is inserted, and send a device insertion signal to the power management module after a preset delay time.

5. The interface circuit apparatus according to claim 4, wherein the power management module is further configured to turn on a detection signal of the parameter configuration pin when receiving a device insertion signal sent by the insertion detection module.

6. The interface circuit apparatus of claim 5, wherein the baseband processing module is further configured to detect a Type of the Type C plug device and to control power management communications with the Type C plug device.

7. The interface circuit arrangement of claim 1, wherein the insertion detection module comprises a comparison circuit, a level matching circuit, and a power channel switching circuit.

8. The interface circuit apparatus according to claim 7, wherein the comparison circuit is configured to generate the insertion signal of the Type C plug device through a level polarity inversion output by the comparison circuit when the detection pin input is zero.

9. The interface circuit arrangement of claim 8, wherein the comparison circuit is further configured to generate a pull-out signal for the Type C plug device by re-inverting a level polarity output by the comparison circuit when the detection pin recovers the voltage level.

10. An apparatus, characterized in that the apparatus comprises an interface circuit arrangement according to any one of claims 1 to 9.

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