CN217010374U

CN217010374U - Interface integrated circuit and electronic device

Info

Publication number: CN217010374U
Application number: CN202123125016.XU
Authority: CN
Inventors: 郭世文; 黄文明; 杨卉; 何桂晓; 曹磊; 吴海全
Original assignee: Shenzhen Grandsun Electronics Co Ltd
Current assignee: Shenzhen Grandsun Electronics Co Ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-07-19
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses an interface integrated circuit and an electronic device, wherein the interface integrated circuit comprises a female seat interface unit, a charging unit, a detection unit and a main control unit, wherein the female seat interface unit is used for inserting a charging wire and a LINE-IN wire; the charging unit is connected with the female seat interface unit; the detection unit is connected with the female seat interface unit; the main control unit is connected with the charging unit and the detection unit; the charging unit detects that a charging wire is inserted into the female socket interface unit, the detection unit detects charging information of an adapter connected with the charging wire and sends the charging information to the main control unit, and the main control unit configures charging current for the charging unit according to the charging information to enter a charging state; the detection unit detects that the LINE-IN LINE is inserted into the female seat interface unit, the detection unit outputs a first LINE-IN access signal to the main control unit, and the main control unit limits the charging current of the charging unit to enter a LINE-IN state. The integration of LINE-IN detection and charging functions is realized, a hardware peripheral interface circuit is effectively simplified, and the miniaturization is facilitated.

Description

Interface integrated circuit and electronic device

Technical Field

The present invention relates to the field of electronic circuit technologies, and in particular, to an interface integrated circuit and an electronic device.

Background

The existing electronic product is generally provided with an independent charging interface and an independent audio interface, the charging interface is used for connecting a charging wire to realize a charging function, and the audio interface is used for connecting an earphone cord. The user can select to insert the charging wire into the interface that charges to charge the product according to needs in using the electronic product, or insert the earphone cord into the audio interface and listen to the music.

However, the current electronic products are increasingly miniaturized, and the existing electronic products provided with a separate charging interface and a separate audio interface do not meet the miniaturization trend. The volume that sets up the interface that charges alone and audio interface can lead to the product is bigger than normal, and the product must set up two interfaces, occupies great design space, is unfavorable for the miniaturized trend of product.

SUMMERY OF THE UTILITY MODEL

The utility model provides an interface integrated circuit and electronic equipment, and aims to solve the problem that the volume of a product is larger due to the fact that a charging interface and an audio interface are separately arranged in the conventional electronic product.

In a first aspect, the present invention provides an interface integrated circuit, comprising: the system comprises a female seat interface unit, a charging unit, a detection unit, a main control unit and a female seat interface unit, wherein the female seat interface unit is used for inserting a charging LINE and a LINE-IN LINE; the charging unit is connected with the female seat interface unit; the detection unit is connected with the female seat interface unit; the main control unit is connected with the charging unit and the detection unit; the charging unit detects that the charging wire is inserted into the female socket interface unit, the detection unit detects charging information of an adapter connected with the charging wire and sends the charging information to the main control unit, and the main control unit configures charging current for the charging unit according to the charging information to enter a charging state; the detection unit detects that the LINE-IN LINE is inserted into the female seat interface unit, the detection unit outputs a first LINE-IN access signal to the main control unit, and the main control unit sends a second LINE-IN access signal to the charging unit so that the charging unit limits the charging current to enter a LINE-IN state.

Further, the detection unit includes a first signal end and a second signal end, the first signal end and the second signal end are connected to the female socket interface unit, and the detection unit is configured to detect voltages of the first signal end and the second signal end to obtain the charging information.

Further, the charging unit communicates with the main control unit through an I2C serial bus.

Further, the detection unit is further configured to determine that the LINE-IN LINE is inserted into the female seat interface unit when detecting that the voltages of the first signal terminal and the second signal terminal are at a low level.

Further, the detection unit further comprises a LINE-IN status end, the LINE-IN status end is connected with the main control unit, and the detection unit is further used for lowering the LINE-IN status end when the LINE-IN LINE is inserted into the mother seat interface unit so as to output a first LINE-IN access signal to the main control unit.

Further, the detection unit communicates with the main control unit through an I2C serial bus.

Further, the female seat interface unit is a TYPE-C female seat interface and is used for inserting a charging LINE of TYPE-C or a LINE-IN LINE of TYPE-C.

In a second aspect, the present invention further provides an interface integrated circuit, including: the charging chip comprises a first data transmission end and a second data transmission end, and the first data transmission end and the second data transmission end are connected with the female seat interface; the detection chip comprises a first signal end, a second signal end and a LINE-IN state end, wherein the first signal end and the second signal end are connected with the female seat interface; and the main control chip is connected with the LINE-IN state end and communicates with the charging chip and the detection chip through an I2C serial bus.

In a third aspect, the present invention further provides an electronic device, which includes an interface integrated circuit, where the interface integrated circuit is the interface integrated circuit according to the first aspect and the second aspect.

Compared with the prior art, the utility model has the beneficial effects that: the charging unit detects that a charging wire is inserted into the female socket interface unit, meanwhile, the detection unit detects charging information of an adapter of the charging wire to send the charging information to the main control unit, and the main control unit configures charging current for the charging unit according to the charging information so as to enter a charging state; the detection unit detects that the LINE-IN LINE is inserted into the female seat interface unit, the detection unit outputs a first LINE-IN access signal to the main control unit to inform the main control unit, the main control unit sends a second LINE-IN access signal to the charging unit to inform the charging unit, and the charging unit limits the charging current to enter a LINE-IN state; therefore, the LINE-IN detection function and the charging function are integrated together, a hardware peripheral interface circuit is effectively simplified, and the insertion of a charging wire and a LINE-IN LINE can be simultaneously met only through one female seat interface unit, so that the area of the PCB design is greatly reduced, the layout of high-density devices is facilitated, and the size of a product is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic diagram of an interface integrated circuit according to an embodiment of the present invention;

FIG. 2 is a circuit diagram of a female socket interface unit of an interface integrated circuit according to an embodiment of the present invention;

FIG. 3 is a circuit diagram of a charging unit of the interface integrated circuit according to an embodiment of the present invention;

FIG. 4 is a circuit diagram of a detection unit of the interface integrated circuit according to an embodiment of the present invention;

FIG. 5 is a circuit diagram of a master control unit of an interface integrated circuit according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of an interface integrated circuit according to another embodiment of the present invention;

10. a female socket interface unit; 20. a charging unit; 30. a detection unit; 40. a main control unit; 1. a female seat interface; 2. a charging chip; 3. detecting a chip; 4. and a main control chip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the present invention shows an interface integrated circuit, including: the system comprises a female seat interface unit 10, a charging unit 20, a detection unit 30 and a main control unit 40, wherein the female seat interface unit 10 is used for inserting a charging LINE and a LINE-IN LINE; a charging unit 20 connected to the female connector unit 10; a detection unit 30 connected to the female connector unit 10; a main control unit 40 connected to the charging unit 20 and the detection unit 30; the charging unit 20 detects that the charging line is inserted into the female socket interface unit 10, the detecting unit 30 detects charging information of an adapter connected to the charging line and sends the charging information to the main control unit 40, and the main control unit 40 configures charging current to the charging unit 20 according to the charging information to enter a charging state; the detecting unit 30 detects that the LINE-IN LINE is inserted into the mother seat interface unit 10, the detecting unit 30 outputs a first LINE-IN access signal to the main control unit 40, and the main control unit 40 sends a second LINE-IN access signal to the charging unit 20 so that the charging unit 20 limits the charging current to enter a LINE-IN state.

Specifically, the female jack interface unit 10 is a TYPE-C female jack interface, which can be used for inserting a charging wire of TYPE-C and also for inserting a LINE-IN LINE (earphone LINE) of TYPE-C.

In the case of TYPE-C charging wire insertion, first, the charging unit 20 detects whether a charging wire is inserted into the female housing interface unit 10. Meanwhile, the detection unit 30 detects charging information of the adapter of the charging cord and transmits the charging information to the main control unit 40. The charging information includes the type of adapter, such as a 5A adapter, or a 10A adapter, but it can also be an adapter differentiated by other metrics, such as an 18W adapter, a 36W adapter, etc. If it is detected that a charging wire is inserted, the main control unit 40 may configure a charging current to the charging unit 20 according to the charging information after acquiring the charging information, and the charging unit 20 charges according to the configured charging current to enter a charging state. For example, the adapter with the charging information of 5A, the charging current of 5A is configured, so that the charging unit 20 charges with the current magnitude of 5A.

IN the case of the LINE-IN LINE of TYPE-C being inserted, the detecting unit 30 first detects whether the LINE-IN LINE is inserted into the female seat interface unit 10, if the LINE-IN LINE is detected to be inserted, the detecting unit 30 outputs a first LINE-IN access signal to the main control unit 40, the main control unit 40 knows that the LINE-IN state is to be entered at this time, the main control unit 40 sends a second LINE-IN access signal to the charging unit 20, the charging unit 20 knows that the LINE-IN state is to be entered at this time, and thus the charging unit 20 limits the charging current to enter the LINE-IN state.

Through implementing this embodiment, for current solitary interface and the solitary audio interface that charges, realized the integration of interface and audio interface that charges, this embodiment detects the function with the function integration that charges with LINE-IN, has effectually simplified hardware peripheral interface circuit, only needs can satisfy the insertion of charging wire and LINE-IN LINE simultaneously through a female seat interface unit 10 to greatly reduce the area of PCB design, do benefit to high density device overall arrangement, reduce the volume of product.

In an embodiment, the detecting unit 30 includes a first signal port CC1 and a second signal port CC2, the first signal port CC1 and the second signal port CC2 are connected to the female socket interface unit 10, and the detecting unit 30 is configured to detect voltages of the first signal port CC1 and the second signal port CC2 to obtain the charging information. The charging wire is inserted into the female socket interface unit 10, the detecting unit 30 detects the voltages on the first signal terminal CC1 and the second signal terminal CC2, and since the charging wire is connected to the adapter, the charging wire is inserted into the female socket interface to be electrified, so the voltages of the first signal terminal CC1 and the second signal terminal CC2 are pulled high, and then the type of the adapter can be judged according to the voltages of the first signal terminal CC1 and the second signal terminal CC 2. For example, when the voltage of the first signal terminal CC1 and the second signal terminal CC2 is 5V, the type of the adapter is 2A adapter. The detecting unit 30 may include a detecting chip, and the first signal terminal CC1 and the second signal terminal CC2 are pins on the detecting chip. Therefore, in the present embodiment, the charging information of the adapter is obtained by detecting the voltages at the first signal terminal CC1 and the second signal terminal CC2, so as to provide the charging information for the charging chip. The first signal terminal CC1 and the second signal terminal CC2 may be connected to a voltage sampling unit, the voltage collected by the voltage sampling unit is represented as the voltage of the first signal terminal CC1 and the voltage of the second signal terminal CC2, and the charging information is obtained by detecting the voltage of the voltage sampling unit. The voltage sampling unit may be a sampling resistor.

In a specific implementation, the charging unit 20 includes a first data transmission terminal DP and a second data transmission terminal DN, the first data transmission terminal DP and the second data transmission terminal DN are connected to the female socket interface unit 10, and the charging unit 20 is configured to detect voltages of the first data transmission terminal DP and the second data transmission terminal DN to determine that the charging line is inserted into the female socket interface unit 10. The first data transmission end DP and the second data transmission end DN are connected with the data positive end and the data negative end of the charging wire male plug through the female socket interface unit 10. Because the charging wire is connected with the adapter, the charging wire is electrified when being inserted into the female socket interface, so that the voltages of the first data transmission terminal DP and the second data transmission terminal DN are pulled high, and the charging unit 20 detects that the voltages of the first data transmission terminal DP and the second data transmission terminal DN are pulled high, so that it can be determined that the charging wire is inserted into the female socket interface unit 10. The charging unit 20 may include a charging chip, and the first data transmission terminal DP and the second data transmission terminal DN are pins on the charging chip. The first data transmission end DP and the second data transmission end DN can be connected with a voltage sampling unit, the voltage collected by the voltage sampling unit is represented as the voltage of the first data transmission end DP and the second data transmission end DN, and whether the charging wire is inserted or not is detected by detecting the voltage of the voltage sampling unit. The voltage sampling unit may be a sampling resistor.

In this embodiment, the charging unit 20 communicates with the main control unit 40 through an I2C serial bus. The detection unit 30 communicates with the main control unit 40 via an I2C serial bus. The I2C serial bus is a simple, bidirectional two-wire synchronous serial bus. It requires only two wires to transfer information between devices connected to the bus. The I2C bus only needs one data line and two clock lines, the bus interface is integrated in the chip, no special interface circuit is needed, and the filter of the interface circuit on the chip can filter the burr on the bus data. Therefore, the I2C bus simplifies the wiring of a hardware circuit PCB, reduces the system cost and improves the system reliability. Because the I2C chip has no wires connected to the system other than the two wires and a few broken wires, the user-friendly IC can be easily standardized and modularized, and can be easily recycled. The I2C serial bus includes an SDA (serial data line) and an SCL (serial clock line), both of which are bidirectional I/O lines. The main control unit 40 may include a main control chip, i.e., an MCU. In this embodiment, the communication between the charging unit 20 and the main control unit 40, and the communication between the detection unit 30 and the main control unit 40 are realized through an I2C serial bus. Therefore, the charging information acquired by the detection unit 30 can be sent to the main control chip through the I2C serial bus, and the main control chip can configure the charging current to the charging unit 20 according to the charging information, so that the charging unit 20 charges according to the charging current, thereby implementing the charging function.

Through implementing the embodiment, the charging unit 20 detects that the voltages of the first data transmission terminal DP and the second data transmission terminal DN are pulled high, which indicates that the charging line is inserted into the female socket interface, and meanwhile, the detecting unit 30 detects the voltages of the first signal terminal CC1 and the second signal terminal CC2, obtains the charging information of the adapter according to the voltages of the first signal terminal CC1 and the second signal terminal CC2, and further the detecting unit 30 sends the charging information to the main control unit 40 through the I2C serial bus, so that the main control unit 40 can configure the charging current to the charging unit 20 according to the charging information, thereby entering a charging state and implementing a charging function.

IN one embodiment, the detection unit 30 is further configured to determine that the LINE-IN LINE is inserted into the female socket interface unit 10 when the voltage of the first signal terminal CC1 and the second signal terminal CC2 is detected to be low. The LINE-IN LINE (TYPE-C earphone LINE) is inserted into the female connector unit 10, the detecting unit 30 detects voltages at the first signal terminal CC1 and the second signal terminal CC2, and since the LINE-IN LINE is not connected to a power source, the LINE-IN LINE is not electrically connected to the female connector, and therefore the voltages at the first signal terminal CC1 and the second signal terminal CC2 are pulled low, and therefore, the detecting unit 30 determines that the LINE-IN LINE is inserted into the female connector unit 10 when detecting that the first signal terminal CC1 and the second signal terminal CC2 are at a low level.

IN a specific implementation, the detection unit 30 further includes a LINE-IN status terminal CC _ INT, the LINE-IN status terminal CC _ INT is connected to the main control unit 40, and the detection unit 30 is further configured to pull down the LINE-IN status terminal CC _ INT to output a first LINE-IN access signal to the main control unit 40 when detecting that the LINE-IN LINE is inserted into the mother seat interface unit 10. Specifically, the LINE-IN status terminal CC _ INT may be a pin on the detection chip, the detection unit 30 is connected to the main control unit 40 through the LINE-IN status terminal CC _ INT, and a voltage of the LINE-IN status terminal CC _ INT is used to indicate whether the LINE-IN LINE is inserted into the mother seat interface unit 10. If the LINE-IN status terminal CC _ INT is low, it indicates that the LINE-IN LINE is inserted into the female socket interface unit 10, otherwise it is not inserted. The detection unit 30 detects that the voltages of the first signal terminal CC1 and the second signal terminal CC2 are pulled low, which means that the LINE-IN LINE is inserted into the female socket interface unit 10, then the detection unit 30 outputs a first LINE-IN access signal, which is a low level signal, and pulls the voltage of the LINE-IN status terminal CC _ INT low, then the main control unit 40 detects that the voltage of the LINE-IN status terminal CC _ INT is low level, and the main control unit 40 knows that the LINE-IN LINE is accessed. Since the main control unit 40 communicates with the charging unit 20 through the I2C serial bus, after the main control unit 40 knows that the LINE-IN LINE is connected, the main control unit 40 outputs a second LINE-IN connection signal to the charging unit 20 to inform the charging unit 20 that the LINE-IN LINE is connected, and the system enters a LINE-IN state, at this time, the charging unit 20 limits the magnitude of the charging current, and limits the maximum charging current to 0.5A.

Through the embodiment, the detection unit 30 detects that the voltages of the first signal terminal CC1 and the second signal terminal CC2 are pulled low, which indicates that the LINE-IN LINE is inserted into the female seat interface unit 10, the detection unit 30 outputs a first LINE-IN access signal to the main control unit 40 by pulling the LINE-IN state terminal CC _ INT, informs the main control unit 40 that the LINE-IN LINE is accessed, the main control unit 40 outputs a second LINE-IN access signal to the charging unit 20 through the I2C serial bus, informs the charging unit 20 that the LINE-IN LINE is accessed, and the charging unit 20 limits the charging current, so as to enter the LINE-IN state, thereby implementing the audio transmission function.

An embodiment of the present invention further provides an interface integrated circuit, including: the charging device comprises a female socket interface 1, a charging chip 2, a detection chip 3 and a main control chip 4, wherein the charging chip 2 comprises a first data transmission end and a second data transmission end, and the first data transmission end and the second data transmission end are connected with the female socket interface 1; the detection chip 3 comprises a first signal end, a second signal end and a LINE-IN state end, and the first signal end and the second signal end are connected with the female seat interface 1; and the main control chip 4 is connected with the LINE-IN state end, and the main control chip 4 is communicated with the charging chip 2 and the detection chip 3 through an I2C serial bus. The female seat interface 1 is a TYPE-C female seat interface 1 and is used for inserting a TYPE-C charging LINE or a TYPE-C LINE-IN LINE.

The working principle of the embodiment is as follows:

when the charging wire of TYPE C is inserted, the TYPE of the external power supply is judged by checking the voltage through the pins CC1 and CC2 of U82, and the TYPE and the state of the external adapter are informed through the communication of PMU _ I2C and the MCU. While the charging IC U12 detects an external USB cable insertion through D +/D-. When the MCU acquires the information of the external adapter through the I2C and the charging IC detects the insertion of the external USB, the MCU and the charging IC carry out I2C communication and configure the magnitude of the charging current.

When the LINE IN LINE of TYPE C is inserted, CC1 and CC2 of U82 are pulled low at the same time, the CC _ INT signal of U82 is pulled low from high, the MCU is informed that the LINE IN input exists, the MCU informs U12 of the LINE IN state through I2C, and the maximum charging current output by U12 is 0.5A at the moment.

Through implementing this embodiment, with LINE-IN detection function and the function integration that charges together, the peripheral interface circuit of effectual simplification hardware only needs female seat interface unit 10 can satisfy the insertion of charging wire and LINE-IN LINE simultaneously to the area of the PCB design that greatly reduces does benefit to high density device overall arrangement, reduces the volume of product.

An embodiment of the present invention further provides an electronic device, which includes an interface integrated circuit, where the interface integrated circuit is the interface integrated circuit described in the foregoing embodiment. The interface integrated circuit has been described in detail in the above embodiments, and is not described herein again. The electronic device of this embodiment may be a smart phone, a tablet computer, a notebook computer, etc., and is not limited herein.

Through implementing this embodiment, set up interface integrated circuit on electronic equipment, electronic equipment only needs can connect charging wire and LINE-IN LINE through a female seat interface, need not to set up interface and the audio interface that charges alone, reduces the quantity of interface to the area of the PCB design that greatly reduces does benefit to high density device overall arrangement, reduces whole electronic equipment's volume.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An interface integrated circuit, comprising:

the female seat interface unit is used for inserting a charging wire and a LINE-IN wire;

the charging unit is connected with the female seat interface unit;

the detection unit is connected with the female seat interface unit;

the main control unit is connected with the charging unit and the detection unit;

the charging unit detects that the charging wire is inserted into the female socket interface unit, the detection unit detects charging information of an adapter connected with the charging wire and sends the charging information to the main control unit, and the main control unit configures charging current for the charging unit according to the charging information to enter a charging state;

the detection unit detects that the LINE-IN LINE is inserted into the female seat interface unit, the detection unit outputs a first LINE-IN access signal to the main control unit, and the main control unit sends a second LINE-IN access signal to the charging unit so that the charging unit limits the charging current to enter a LINE-IN state.

2. The interface integrated circuit of claim 1, wherein the detection unit comprises a first signal terminal and a second signal terminal, the first signal terminal and the second signal terminal are connected to the female socket interface unit, and the detection unit is configured to detect voltages of the first signal terminal and the second signal terminal to obtain the charging information.

3. The interface integrated circuit of claim 2, wherein the charging unit comprises a first data transmission terminal and a second data transmission terminal, the first data transmission terminal and the second data transmission terminal are connected to the female socket interface unit, and the charging unit is configured to detect voltages of the first data transmission terminal and the second data transmission terminal to determine that the charging wire is inserted into the female socket interface unit.

4. The interface integrated circuit of claim 3, wherein the charging unit communicates with the master unit via an I2C serial bus.

5. The interface integrated circuit of any one of claims 2-4, wherein the detection unit is further configured to determine that the LINE-IN LINE is plugged into the female socket interface unit when the voltage of the first signal terminal and the second signal terminal is detected to be low.

6. The interface integrated circuit of claim 5, wherein the detection unit further comprises a LINE-IN status terminal, wherein the LINE-IN status terminal is connected to the master control unit, and wherein the detection unit is further configured to pull down the LINE-IN status terminal to output a first LINE-IN access signal to the master control unit when detecting that the LINE-IN LINE is inserted into the parent interface unit.

7. The interface integrated circuit of claim 6, wherein the detection unit communicates with the master unit via an I2C serial bus.

8. The interface integrated circuit of claim 7, wherein the female socket interface unit is a TYPE-C female socket interface for inserting a TYPE-C charging LINE or a TYPE-C LINE-IN LINE.

9. An interface integrated circuit, comprising:

a female socket interface;

the charging chip comprises a first data transmission end and a second data transmission end, and the first data transmission end and the second data transmission end are connected with the female socket interface;

the detection chip comprises a first signal end, a second signal end and a LINE-IN state end, wherein the first signal end and the second signal end are connected with the female seat interface;

and the main control chip is connected with the LINE-IN state end and communicates with the charging chip and the detection chip through an I2C serial bus.

10. An electronic device comprising an interface integrated circuit according to any one of claims 1 to 9.