CN109218880A - Earphone charging two-in-one circuit and control method, terminal - Google Patents
Earphone charging two-in-one circuit and control method, terminal Download PDFInfo
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- CN109218880A CN109218880A CN201810833338.3A CN201810833338A CN109218880A CN 109218880 A CN109218880 A CN 109218880A CN 201810833338 A CN201810833338 A CN 201810833338A CN 109218880 A CN109218880 A CN 109218880A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1025—Accumulators or arrangements for charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present embodiments relate to electronic technology field, a kind of earphone charging two-in-one circuit and control method, terminal are disclosed.Wherein, earphone charging two-in-one circuit in detection unit detection interface unit voltage；When detecting that voltage reaches the first preset value, interface unit and charhing unit is connected in trigger control unit control switch unit；Detect that voltage reaches the second preset value and when less than the first preset value, trigger control unit control switch unit simultaneously switches off the connection between interface unit and audio unit and interface unit and charhing unit；When detecting that voltage is low level, interface unit and audio unit is connected in trigger control unit control switch unit.Compared with prior art, the functions such as charging, audio transmission and data interaction may be implemented by an interface in the present invention, reduce the open amount of terminal, reduce the cost of end openings, the thickness of terminal can be reduced simultaneously, and the quantity of the external connection line of carrying is advantageously reduced, portability is promoted.
Description
Technical Field
The embodiment of the invention relates to the technical field of electronics, in particular to an earphone charging two-in-one circuit, a control method and a terminal.
Background
With the development of electronic technology, various external connection lines for terminals, such as earphones, data/charging lines, OTG lines, and the like, are increasing. At present, two essential interfaces are mainly arranged on the mobile phone: the first is a USB (USB is an abbreviation of universal serial Bus, and chinese is translated into universal serial Bus) interface, which is mainly used for charging and data transmission. And the other is a 3.5mm earphone interface which is mainly used for connecting an earphone. The various external connecting wires have different and single functions and are mutually independent.
However, the prior art has at least the following problems: the mobile phone has more openings. And when a user goes out, various external connecting wires are required to be carried for ensuring the realization of the related functions of the terminal, which brings great inconvenience to the user.
Disclosure of Invention
The invention aims to provide an earphone charging two-in-one circuit, a control method and a terminal, so that functions of charging, audio transmission, data interaction and the like can be realized through one interface, the number of openings of the terminal is reduced, the cost of the opening of the terminal is reduced, the thickness of the terminal can be reduced, the number of external connecting wires for carrying is reduced, and the portability is improved.
In order to solve the above technical problem, an embodiment of the present invention provides an earphone charging two-in-one circuit, including: the device comprises an interface unit, a switch unit and a controller. The controller comprises an audio unit, a charging unit, a control unit and a detection unit; the detection unit is electrically connected with the interface unit and is used for detecting the voltage of the interface unit; when the detection unit detects that the voltage reaches a first preset value, the control unit is triggered to control the switch unit to conduct the interface unit and the charging unit; when the detection unit detects that the voltage reaches the second preset value and is smaller than the first preset value, the control unit is triggered to control the switch unit to simultaneously disconnect the interface unit and the audio unit and the interface unit and the charging unit; when the detection unit detects that the voltage is at a low level, the control unit is triggered to control the switch unit to conduct the interface unit and the audio unit.
The embodiment of the invention also provides an earphone charging two-in-one control method, which is based on the earphone charging two-in-one circuit and comprises the following steps: detecting the voltage of the interface unit; when the voltage is detected to reach a first preset value, controlling a switch unit to conduct the interface unit and the charging unit; when the voltage is detected to reach a second preset value and be smaller than the first preset value, controlling the switch unit to simultaneously disconnect the interface unit and the audio unit and the connection between the interface unit and the charging unit; and when the voltage is detected to be at a low level, controlling the switch unit to conduct the interface unit and the audio unit.
An embodiment of the present invention further provides a terminal, including: at least one processor; and a memory communicatively coupled to the at least one processor; the storage stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the earphone charging two-in-one control method.
The embodiment of the invention also provides a terminal, which comprises a shell with a USB port and the earphone charging two-in-one circuit, wherein the earphone charging two-in-one circuit is accommodated in an accommodating space formed by the shell, and the interface unit is positioned at the USB port.
Compared with the prior art, the embodiment of the invention has the advantages that when the earphone line or the USB is respectively inserted into the interface unit through respective plugs, the voltages of the interface units are different, so that the switch unit can be controlled to conduct the interface unit and the charging unit to realize the charging function according to different values of the voltages of the interface units, or the switch unit can be controlled to conduct the interface unit and the audio unit to realize the audio transmission function, namely, the USB and the earphone line can be connected through the interface unit. Therefore, the terminal can realize functions of charging, audio transmission, data interaction and the like through one interface, reduce the number of openings of the terminal, reduce the cost of the openings of the terminal, reduce the thickness of the terminal, facilitate the reduction of the number of external connecting wires to be carried, and improve the portability.
In addition, the switch unit is provided with an enabling end, a first pin group, a second pin group and a third pin group; the enabling end is electrically connected to the control unit, the first pin group is electrically connected to the interface unit, the second pin group is electrically connected to the charging unit, and the third pin group is electrically connected to the audio unit; when the detection unit detects that the voltage reaches a first preset value, the control unit is triggered to control the first pin group and the second pin group to be in a connection state through the enabling end; when the detection unit detects that the voltage reaches the second preset value and is smaller than the first preset value, the control unit is triggered to control the first pin group and the second pin group to be in a disconnected state and control the first pin group and the third pin group to be in a disconnected state through the enabling end; when the detection unit detects that the voltage is at a low level, the control unit is triggered to control the first pin group and the third pin group to be in a connection state through the enabling end. In this way, a specific implementation form of the earphone charging two-in-one circuit is provided, which helps to ensure the feasibility of the invention and enables the design cost to be lower.
In addition, the interface unit includes: a grounding pin, an MIC/DP two-in-one pin, an R/DM two-in-one pin and an L & DETECT/VBUS two-in-one pin; the first pin group comprises three pins which are respectively connected with the MIC/DP two-in-one pin, the R/DM two-in-one pin and the L & DETECT/VBUS; the second pin group comprises three pins which are respectively connected with three terminals of the charging unit; the VBUS pin, the DP pin and the DM pin are respectively connected to the charging unit through three terminals of the charging unit; the third pin group comprises three pins which are respectively connected with three terminals of the audio unit; the L & DETECT pin, the MIC pin and the R pin are respectively connected to the audio charging unit through three terminals of the audio unit. In this way, a specific implementation form of the interface unit is provided, which helps to guarantee the feasibility of the invention and makes the design cost low.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a block diagram of a charging circuit according to a first embodiment of the present invention;
FIG. 2 is a circuit diagram of a charging circuit according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a second embodiment of a headset or USB male according to the present invention;
fig. 4 is a block diagram of a terminal according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
The first embodiment of the invention relates to an earphone charging two-in-one circuit. As shown in fig. 1, the core of the present embodiment is that the earphone charging two-in-one circuit includes: an interface unit 11, a switching unit 12 and a controller 2. The controller 2 may be, but is not limited to, a micro control unit MCU. The controller 2 includes an audio unit 13, a charging unit 14, a control unit 15, and a detection unit 16. The detection unit 16 is electrically connected to the interface unit 11, and is configured to detect a voltage of the interface unit 11. When the detecting unit 16 detects that the voltage reaches a first preset value, the controlling unit 15 is triggered to control the switching unit 12 to turn on the interface unit 11 and the charging unit 14. When the detecting unit 16 detects that the voltage reaches the second preset value and is smaller than the first preset value, the controlling unit 15 is triggered to control the switching unit 12 to simultaneously disconnect the interface unit 11 and the audio unit 13 and the interface unit 11 and the charging unit 14. When the detecting unit 16 detects that the voltage is at a low level, the controlling unit 15 is triggered to control the switching unit 12 to turn on the interface unit 11 and the audio unit 13.
Since the voltages of the interface unit 11 are different when the earphone cord or the USB is respectively inserted into the interface unit 11 through respective plugs, the switch unit 12 can be controlled to conduct the interface unit 11 and the charging unit 14 to realize the charging function according to different values of the voltages of the interface unit 11, or the switch unit 12 can be controlled to conduct the interface unit 11 and the audio unit 13 to realize the audio transmission function, that is, the earphone cord can be connected to the USB through the interface unit 11. Therefore, the terminal can realize functions of charging, audio transmission, data interaction and the like through one interface, reduce the number of openings of the terminal, reduce the cost of the openings of the terminal, reduce the thickness of the terminal, facilitate the reduction of the number of external connecting wires to be carried, and improve the portability.
The following describes implementation details of the earphone charging two-in-one circuit of the present embodiment in detail, and the following description is only provided for easy understanding and is not necessary to implement the present invention.
In the actual design process, the earphone charging two-in-one circuit further comprises a resistor; one end of the resistor is connected to the L & DETECT/VBUS two-in-one pin, and the other end of the resistor is connected to the PMU. In the present embodiment, the resistance is 470 kilo-ohm. The first preset value is 5V, and the second preset value is 1.8V.
The switch unit 12 has an enable terminal, a first pin group, a second pin group, and a third pin group; the enable end is electrically connected to the control unit 15, the first pin set is electrically connected to the interface unit 11, the second pin set is electrically connected to the charging unit 14, and the third pin set is electrically connected to the audio unit 13; when the detecting unit 16 detects that the voltage reaches a first preset value, the controlling unit 15 is triggered to control the first pin group and the second pin group to be in a connection state through the enabling terminal; when the detecting unit 16 detects that the voltage reaches the second preset value and is smaller than the first preset value, the controlling unit 15 is triggered to control the first pin group and the second pin group to be in a disconnected state and control the first pin group and the third pin group to be in a disconnected state through the enabling terminal; when the detecting unit 16 detects that the voltage is at a low level, the controlling unit 15 is triggered to control the first pin group and the third pin group to be in a connection state through the enabling terminal. In this way, a specific implementation form of the earphone charging two-in-one circuit is provided, which helps to ensure the feasibility of the invention and enables the design cost to be lower.
The embodiment can realize functions of charging, audio transmission, data interaction and the like through one interface, reduces the number of openings of the terminal, reduces the cost of the openings of the terminal, can reduce the thickness of the terminal, is favorable for reducing the number of external connecting wires to be carried, and improves the portability. Meanwhile, the earphone charging two-in-one circuit of the embodiment has strong universality, and can be applied to all equipment with 3.5mm earphone interfaces and USB interfaces.
The second embodiment of the invention relates to an earphone charging two-in-one circuit. The embodiment is further improved on the basis of the first embodiment, and the specific improvement is as follows: in a second embodiment, a specific implementation form of the interface unit is provided.
As shown in fig. 2, the earphone charging two-in-one circuit includes: an interface unit 11, a switching unit 12 and a controller 2. The controller 2 may be, but is not limited to, a micro control unit MCU. The controller 2 includes an audio unit 13, a charging unit 14, a control unit 15, and a detection unit 16; the detection unit 16 is electrically connected to the interface unit 11, and is configured to detect a voltage of the interface unit 11.
In the actual design process, the earphone charging two-in-one circuit further comprises a resistor R; one end of the resistor R is connected to the L & DETECT/VBUS two-in-one pin, and the other end of the resistor R is connected to the external power management unit PMU. In the present embodiment, the resistance R is 470 kilo-ohm. The first preset value is 5V, and the second preset value is 1.8V.
The interface unit 11 includes: a ground pin GND, a MIC/DP two-in-one pin, an R/DM two-in-one pin, and an L & DETECT/VBUS two-in-one pin. When the interface unit 11 is used as an earphone interface, a ground pin GND, a MIC pin (MIC refers to a microphone), an R (R refers to a right channel) pin, and an L & DETECT pin (L refers to a left channel, and DETECT refers to detection) are used. When the interface unit 11 serves as a charging interface, the ground pins GND, DP (DP is data receiving) pin, DM (DM is data sending) pin, and VBU pin are used. It is worth mentioning that the signals DP and DM correspond to the D + data positive signal and the D-data negative signal, respectively.
The switch unit 12 has an enable terminal, a first pin group, a second pin group, and a third pin group. The first pin group comprises three pins which are respectively connected with the MIC/DP two-in-one pin, the R/DM two-in-one pin and the L & DETECT/VBUS. The second pin group includes three pins respectively connected to three terminals of the charging unit 14. The VBUS pin, the DP pin, and the DM pin are connected to the charging unit 14 through three terminals of the charging unit 14, respectively. The third pin group includes three pins connected to three terminals of the audio unit 13, respectively. The L & DETECT pin, the MIC pin, and the R pin are connected to the audio charging unit 13 through three terminals of the audio unit 13, respectively. In this way, a specific implementation of the interface unit 11 is provided, which helps to guarantee the feasibility of the invention and makes the design less costly.
In the following, a brief description is made on the male headset or the USB male, as shown in fig. 3, for the USB male, the contact points on the USB male correspond to the ground pin GND 31, the DP pin 32, the DM pin 33, and the VBUS pin 34 in sequence. For the male earphone, the contact points on the male earphone correspond to the ground pin GND 31, the MIC pin 32, the R pin 33 and the L & DETECT pin 34 in sequence.
In an actual design process, the DM pin and the DP pin are interchangeable, and specifically, the interface unit 11 includes: a grounding pin GND, an MIC/DM two-in-one pin, an R/DP two-in-one pin and an L & DETECT/VBUS two-in-one pin; the first pin group comprises three pins which are respectively connected with the MIC/DM two-in-one pin, the R/DP two-in-one pin and the L & DETECT/VBUS; the second pin group comprises three pins which are respectively connected with three terminals of the charging unit 14; the VBUS pin, the DP pin, and the DM pin are respectively connected to the charging unit 14 through three terminals of the charging unit 14; the third pin group includes three pins, which are respectively connected to three terminals of the audio unit 13; the L & DETECT pin, the MIC pin, and the R pin are connected to the audio charging unit 13 through three terminals of the audio unit 13, respectively.
In the specific use process:
firstly, an initial state: when no male plug is inserted into the interface unit 11, i.e. no earphone or USB is inserted into the interface unit 11, the pins of the switch unit 12 are suspended in a high-impedance (off) state. At this time, the detection unit 16 detects that the voltage is 1.8V (the system pulls up to 1.8V by default). It is possible to prevent the circuit from being damaged by the high voltage rising when the USB is suddenly inserted into the interface unit 11.
II, working state 1: when the USB 5V male plug is inserted, the voltage on the L & DETECT/VBUS two-in-one pin is pulled up to 5V (the voltage value is not limited to 5V in practical design, and the voltage value is specifically designed according to specific application). At this time, when the detection unit 16 detects that the voltage reaches 5V (which may fluctuate up and down at 5V within an error allowable range), the trigger control unit 15 controls the switching unit 12 to turn on the interface unit 11 and the charging unit 14. That is, COM1 to B1, COM2 to B2, and COM3 to B3. At this time, the USB communication link and the charging loop are formed. COM1 is connected to B1 to form DP, COM2 is connected to B2 to form DM, and COM3 is connected to B3 to form VBUS. When the USB male is pulled out from the interface unit 11, the initial state is returned.
Third, the working state 2: when the earphone male is inserted, the voltage on the L & DETECT/VBUS two-in-one pin is pulled to a low level, which is 0V within the allowable range of error. At this time, when the detection unit 16 detects that the voltage reaches 0V, the trigger control unit 15 controls the switch unit 12 to turn on the interface unit 11 and the earphone unit. That is, COM1 to A1, COM2 to A2, and COM3 to A3. At this time, the audio loop of the headphone is formed. COM1 is connected to a1 to form MIC, COM2 is connected to a2 to form R (channel), and COM3 is connected to A3 to form L (channel), respectively. When the headset is pulled out from the interface unit 11, it returns to the initial state.
The embodiment can realize functions of charging, audio transmission, data interaction and the like through one interface, reduces the number of openings of the terminal, reduces the cost of the openings of the terminal, can reduce the thickness of the terminal, is favorable for reducing the number of external connecting wires to be carried, and improves the portability. Meanwhile, the earphone charging two-in-one circuit of the embodiment has strong universality, and can be applied to all equipment with 3.5mm earphone interfaces and USB interfaces.
The third embodiment of the invention relates to an earphone charging two-in-one control method. The earphone charging two-in-one control method is based on the earphone charging two-in-one circuit of the first or second embodiment.
The earphone charging two-in-one control method comprises the following steps: the voltage of the interface unit is detected. And when the voltage is detected to reach the first preset value, the switch unit is controlled to conduct the interface unit and the charging unit. And when the voltage is detected to reach the second preset value and be smaller than the first preset value, the control switch unit simultaneously disconnects the interface unit and the audio unit and the interface unit and the charging unit. And when the voltage is detected to be at a low level, the switch unit is controlled to conduct the interface unit and the audio unit.
It should be understood that this embodiment is a method example corresponding to the first or second embodiment, and may be implemented in cooperation with the first or second embodiment. The related technical details mentioned in the first or second embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first or second embodiment.
The embodiment can realize functions of charging, audio transmission, data interaction and the like through one interface, reduces the number of openings of the terminal, reduces the cost of the openings of the terminal, can reduce the thickness of the terminal, is favorable for reducing the number of external connecting wires to be carried, and improves the portability. Meanwhile, the earphone charging two-in-one circuit of the embodiment has strong universality, and can be applied to all equipment with 3.5mm earphone interfaces and USB interfaces.
A fourth embodiment of the present invention relates to a terminal. As shown in fig. 4, the terminal includes: at least one processor 41; and a memory 42 communicatively coupled to the at least one processor 41; the memory 42 stores instructions executable by the at least one processor 41, and the instructions are executed by the at least one processor 41, so that the at least one processor 41 can execute the earphone charging two-in-one control method according to the third embodiment.
Where memory 42 and processor 41 are coupled in a bus, the bus may comprise any number of interconnected buses and bridges that couple one or more of the various circuits of processor 41 and memory 42 together. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 41 is transmitted over a wireless medium through an antenna, which further receives the data and transmits the data to the processor 41.
Processor 41 is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory 42 may be used to store data used by processor 41 in performing operations.
The embodiment can realize functions of charging, audio transmission, data interaction and the like through one interface, reduces the number of openings of the terminal, reduces the cost of the openings of the terminal, can reduce the thickness of the terminal, is favorable for reducing the number of external connecting wires to be carried, and improves the portability. Meanwhile, the earphone charging two-in-one circuit of the embodiment has strong universality, and can be applied to all equipment with 3.5mm earphone interfaces and USB interfaces.
The fifth embodiment of the present invention relates to a terminal, which includes a housing having a USB port, and the first or second embodiment of the earphone charging two-in-one circuit, wherein the earphone charging two-in-one circuit is accommodated in an accommodating space formed by the housing, and the interface unit is located at the USB port.
The embodiment can realize functions of charging, audio transmission, data interaction and the like through one interface, reduces the number of openings of the terminal, reduces the cost of the openings of the terminal, can reduce the thickness of the terminal, is favorable for reducing the number of external connecting wires to be carried, and improves the portability. Meanwhile, the earphone charging two-in-one circuit of the embodiment has strong universality, and can be applied to all equipment with 3.5mm earphone interfaces and USB interfaces.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. An earphone charging two-in-one circuit, comprising: the device comprises an interface unit, a switch unit and a controller;
the controller comprises an audio unit, a charging unit, a control unit and a detection unit;
the detection unit is electrically connected with the interface unit and is used for detecting the voltage of the interface unit;
when the detection unit detects that the voltage reaches a first preset value, the control unit is triggered to control the switch unit to conduct the interface unit and the charging unit; when the detection unit detects that the voltage reaches the second preset value and is smaller than the first preset value, the control unit is triggered to control the switch unit to simultaneously disconnect the interface unit and the audio unit and the interface unit and the charging unit; when the detection unit detects that the voltage is at a low level, the control unit is triggered to control the switch unit to conduct the interface unit and the audio unit.
2. The two-in-one circuit for charging an earphone according to claim 1, wherein the switch unit has an enable terminal, a first pin group, a second pin group and a third pin group;
the enabling end is electrically connected to the control unit, the first pin group is electrically connected to the interface unit, the second pin group is electrically connected to the charging unit, and the third pin group is electrically connected to the audio unit;
when the detection unit detects that the voltage reaches a first preset value, the control unit is triggered to control the first pin group and the second pin group to be in a connection state through the enabling end; when the detection unit detects that the voltage reaches the second preset value and is smaller than the first preset value, the control unit is triggered to control the first pin group and the second pin group to be in a disconnected state and control the first pin group and the third pin group to be in a disconnected state through the enabling end; when the detection unit detects that the voltage is at a low level, the control unit is triggered to control the first pin group and the third pin group to be in a connection state through the enabling end.
3. The headset charging two-in-one circuit of claim 2, wherein the interface unit comprises:
a grounding pin, an MIC/DP two-in-one pin, an R/DM two-in-one pin and an L & DETECT/VBUS two-in-one pin;
the first pin group comprises three pins which are respectively connected with the MIC/DP two-in-one pin, the R/DM two-in-one pin and the L & DETECT/VBUS;
the second pin group comprises three pins which are respectively connected with three terminals of the charging unit; the VBUS pin, the DP pin and the DM pin are respectively connected to the charging unit through three terminals of the charging unit;
the third pin group comprises three pins which are respectively connected with three terminals of the audio unit; the L & DETECT pin, the MIC pin and the R pin are respectively connected to the audio charging unit through three terminals of the audio unit.
4. The headset charging two-in-one circuit of claim 2, wherein the interface unit comprises:
a grounding pin, an MIC/DM two-in-one pin, an R/DP two-in-one pin and an L & DETECT/VBUS two-in-one pin;
the first pin group comprises three pins which are respectively connected with the MIC/DM two-in-one pin, the R/DP two-in-one pin and the L & DETECT/VBUS;
the second pin group comprises three pins which are respectively connected with three terminals of the charging unit; the VBUS pin, the DP pin and the DM pin are respectively connected to the charging unit through three terminals of the charging unit;
the third pin group comprises three pins which are respectively connected with three terminals of the audio unit; the L & DETECT pin, the MIC pin and the R pin are respectively connected to the audio charging unit through three terminals of the audio unit.
5. The headset charging two-in-one circuit according to claim 3 or 4, further comprising a resistor;
one end of the resistor is connected to the L & DETECT/VBUS two-in-one pin, and the other end of the resistor is connected to the PMU.
6. The headset charging two-in-one circuit of claim 5, wherein the resistance is 470 kilo-ohms.
7. The headset charging two-in-one circuit of claim 1, wherein the first preset value is 5V, and the second preset value is 1.8V.
8. An earphone charging two-in-one control method, wherein the earphone charging two-in-one control method is based on the earphone charging two-in-one circuit of any one of claims 1 to 7, and the earphone charging two-in-one control method comprises:
detecting the voltage of the interface unit;
when the voltage is detected to reach a first preset value, controlling a switch unit to conduct the interface unit and the charging unit;
when the voltage is detected to reach a second preset value and be smaller than the first preset value, controlling the switch unit to simultaneously disconnect the interface unit and the audio unit and the connection between the interface unit and the charging unit;
and when the voltage is detected to be at a low level, controlling the switch unit to conduct the interface unit and the audio unit.
9. A terminal, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the headset charging two-in-one control method of claim 8.
10. A terminal, comprising a housing having a USB port and the earphone charging two-in-one circuit of any one of claims 1 to 7, wherein the earphone charging two-in-one circuit is accommodated in an accommodating space formed by the housing, and the interface unit is located at the USB port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833338.3A CN109218880A (en) | 2018-07-26 | 2018-07-26 | Earphone charging two-in-one circuit and control method, terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833338.3A CN109218880A (en) | 2018-07-26 | 2018-07-26 | Earphone charging two-in-one circuit and control method, terminal |
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| Publication Number | Publication Date |
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| CN109218880A true CN109218880A (en) | 2019-01-15 |
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| CN201810833338.3A Pending CN109218880A (en) | 2018-07-26 | 2018-07-26 | Earphone charging two-in-one circuit and control method, terminal |
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| Country | Link |
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| CN (1) | CN109218880A (en) |
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