CN201805529U - Earphone interface shared by serial port download line and earphone, and mobile terminal shared thereby - Google Patents

Earphone interface shared by serial port download line and earphone, and mobile terminal shared thereby Download PDF

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Publication number
CN201805529U
CN201805529U CN2010205257724U CN201020525772U CN201805529U CN 201805529 U CN201805529 U CN 201805529U CN 2010205257724 U CN2010205257724 U CN 2010205257724U CN 201020525772 U CN201020525772 U CN 201020525772U CN 201805529 U CN201805529 U CN 201805529U
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China
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earphone
pin
control unit
shared
earphone interface
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Expired - Fee Related
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CN2010205257724U
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Chinese (zh)
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王亚辉
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Huizhou TCL Mobile Communication Co Ltd
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Huizhou TCL Mobile Communication Co Ltd
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Abstract

The utility model discloses an earphone interface shared by a serial port download line and an earphone, and a mobile terminal shared thereby; the earphone interface comprises a grounding pin, a left channel sound signal pin, a signal interrupt pin connected with an interrupt signal control unit, an idle pin, a right channel sound signal pin connected with a right channel control unit, and a microphone pin, wherein the left channel sound signal pin is connected with a left channel control unit or a UART-TXD signal wire by a first gating unit; and the microphone pin is connected with a microphone control unit or a UART-RXD signal wire by a second gating unit. The utility model can be skillfully multiplexed on the earphone interface respectively together with a left channel (or a right channel) of the earphone and a microphone signal wire by a transceiving signal wire through two single-pole double-throw analogue switches and auxiliary circuits, thus realizing multiple functions of a mobile phone on the premise of not adding an additional interface, and being suitable for miniaturization design trend of the mobile phone.

Description

A kind of serial ports is downloaded line and shared earphone interface and the portable terminal of earphone
Technical field
The utility model relates to the mobile terminal device field, specifically, relates to a kind of serial ports and downloads line and shared earphone interface and the portable terminal of earphone.
Background technology
Continuous development along with the mobile phone terminal technology, improving constantly of CPU speed, application on the mobile phone is more and more, function becomes increasingly complex, in order to support these interfaces of using peripheral hardware on the mobile phone also more and more, for example, mobile phone needs earphone interface, USB (Universal Serial BUS, USB) data transmission interface, charging inlet, cell phone software down loading updating interface etc.If, need all give an interface on the hardware with the module of PERCOM peripheral communication to each, can cause the increase of mobile phone volume, do not meet the development trend of present mobile phone terminal miniaturization Design.
Therefore, how the existing earphone interface of mobile phone being also used as other functions, thereby realizing numerous functions of mobile phone under the prerequisite of not setting up additional interface, to be fit to the miniaturization Design trend requirement of mobile phone, is that the industry is badly in need of dealing with problems.
The utility model content
The purpose of this utility model provides a kind of serial ports and downloads line and shared earphone interface and the portable terminal of earphone, can make serial ports download line and the shared interface of earphone, to be fit to the miniaturization Design trend of mobile phone.
For achieving the above object, technical solution adopted in the utility model is as follows:
A kind of serial ports is downloaded line and the shared earphone interface of earphone, it comprises ground pin, L channel voice signal pin, the signal interruption pin that is connected with the interrupt signal control unit, idle pin, the right channel sound signal pin that is connected with the R channel control unit and microphone pin, wherein, described L channel voice signal pin is connected with the L channel control unit or is connected with the UART_TXD holding wire by first gating unit; Described microphone pin is connected with the microphone control unit or is connected with the UART_RXD holding wire by second gating unit.
Described serial ports is downloaded line and the shared earphone interface of earphone, and wherein, described L channel voice signal pin and right channel sound signal pin are respectively by a grounding through resistance.
Described serial ports is downloaded line and the shared earphone interface of earphone, and wherein, described first gating unit and second gating unit include the single-pole double throw analog switch.
Described serial ports is downloaded line and the shared earphone interface of earphone, and wherein, described earphone interface adopts 3.5mm standard earphone interface.
Described serial ports is downloaded line and the shared earphone interface of earphone, wherein, is provided with first electric capacity between L channel voice signal pin and L channel control unit, is provided with second electric capacity between right channel sound signal pin and R channel control unit.
A kind of serial ports is downloaded line and the shared earphone interface of earphone, it comprises ground pin, the L channel voice signal pin that is connected with the L channel control unit, the signal interruption pin that is connected with the interrupt signal control unit, idle pin, right channel sound signal pin and microphone pin, wherein, described right channel sound signal pin is connected with the R channel control unit or is connected with the UART_TXD holding wire by first gating unit; Described microphone pin is connected with the microphone control unit or is connected with the UART_RXD holding wire by second gating unit.
Described serial ports is downloaded line and the shared earphone interface of earphone, and wherein, described L channel voice signal pin and right channel sound signal pin are respectively by a grounding through resistance.
Described serial ports is downloaded line and the shared earphone interface of earphone, and wherein, described first gating unit and second gating unit include the single-pole double throw analog switch.
Described serial ports is downloaded line and the shared earphone interface of earphone, wherein, is provided with first electric capacity between L channel voice signal pin and L channel control unit, is provided with second electric capacity between right channel sound signal pin and R channel control unit.
A kind of portable terminal is characterized in that, comprises above-mentioned earphone interface.
Compared with prior art, a kind of serial ports that the utility model provides downloads line and shared earphone interface and the portable terminal of earphone undertaken multiplexing by the part pin to earphone interface, thereby under the prerequisite that does not increase the portable terminal additional interface, increased the UART serial ports download function of portable terminal, reduced the earphone interface on the portable terminal, the miniaturization Design that helps portable terminal, the while has also been reduced the cost of portable terminal.
Description of drawings
The serial ports that Fig. 1 provides for the utility model first embodiment is downloaded the circuit theory diagrams of the shared earphone interface of line and earphone;
The serial ports that Fig. 2 provides for the utility model second embodiment is downloaded the circuit theory diagrams of the shared earphone interface of line and earphone.
Embodiment
The serial ports that the utility model provides is downloaded line and shared earphone interface and the portable terminal of earphone, by UART_TXD (transmission holding wire) and UAR_RXD (received signal line) is multiplexing cleverly on earphone interface by two single-pole double throw analog switches and some auxiliary circuits with L channel (or R channel) and Mike's holding wire of earphone respectively, for portable terminal has been saved valuable space, adapt to portable terminal miniaturization growth requirement.
For making the purpose of this utility model, technical scheme and effect clearer, clear and definite, below with reference to accompanying drawing, the specific embodiment that develops simultaneously further describes the utility model.
See also Fig. 1, its serial ports that provides for the utility model first embodiment is downloaded the circuit theory diagrams of the shared earphone interface of line and earphone.Earphone interface 100 of the present utility model adopts 3.5mm standard earphone interface, and it comprises that 6 pins are respectively ground pin 110, right channel sound signal pin 120, signal interruption pin one 30, idle pin one 40, L channel voice signal pin one 50 and microphone pin one 60.
Wherein, signal interruption pin one 30 is connected with interrupt signal control unit 131, and described signal interruption pin one 30 is connected with right channel sound signal pin 120 when low level, when high level and right channel sound signal pin 120 disconnect.
In order to realize the switching of serial ports download function and ear-phone function, described L channel voice signal pin one 50 is selected to be connected with L channel control unit 151 by first gating unit 170, perhaps be connected with UART_TXD holding wire 210, described microphone pin one 60 is connected with microphone control unit 161 by second gating unit 180, perhaps is connected with UART_RXD holding wire 220.
Wherein, described first gating unit 170 and second gating unit 180 comprise single-pole double throw analog switch and auxiliary circuit thereof.S1 place in two gating units is defaulted as low level, guarantees that default conditions are " A1 and C conducting ", makes UART (Universal Asynchronous Receiver/Transmitter, universal asynchronous reception/dispensing device) holding wire be connected to earphone interface.
In the present embodiment, pass through resistance R 1 and resistance R 2 ground connection respectively at described L channel voice signal pin one 20 and right channel sound signal pin 150.Described resistance R 1 and resistance R 2 are a drop-down resistance, and keeping the earphone signal line is low level, are set to the input high level state in baseband chip end (the being the interrupt signal control unit) interrupt signal of portable terminal.
When not inserting earphone, because R channel is a low level with pulleding down to, this moment right channel sound signal pin 120 and 30 conductings of signal interruption pin one are so interrupt signal is a low level; When inserting earphone, right channel sound signal pin 120 disconnects with signal interruption pin one 30, and at this moment interrupt signal produces interrupt signal from the low transition to the high level.
Further, in order to increase the acoustical quality of portable terminal, between L channel voice signal pin one 50 and L channel control unit 151, be provided with first capacitor C 1, between right channel sound signal pin 120 and R channel control unit 121, be provided with second capacitor C 2.Described first capacitor C 1 and second capacitor C 2 are filter capacitor, filtering the noise on L channel control unit 151 and R channel control unit 121 output channels.
Second embodiment of the present utility model, see also Fig. 2, the difference of itself and first embodiment only is, first gating unit 170 is arranged on the transmission channel of R channel control unit 121, this first gating unit 170 is used to make right channel sound signal pin 120 to be connected with R channel control unit 121, and right channel sound signal pin 120 is connected with the UART_TXD holding wire.
Download line and the shared earphone interface of earphone based on above-mentioned serial ports, the utility model embodiment also correspondence provides a kind of portable terminal, and this portable terminal is a mobile phone, and comprises above-mentioned earphone interface.Above describe in detail in view of this earphone interface, repeat no more herein.
Below be described in detail having the operating state that described serial ports downloads the mobile phone of the shared earphone interface of line and earphone:
Generally speaking, the mobile phone power-on default conditions are UART serial ports downloading mode, and mobile phone end main control chip can be waited for the order from UART, if the regular hour (for example: do not receive orders 2ms), promptly enter the start flow process.So the earphone interface default signal is the UART signal, do not detect at open state under the situation of any peripheral hardware insertion, also be the UART signal; And after earphone was extracted, the analog switch of mobile phone (first gating unit 170 and second gating unit 180) also switched back the serial ports downloading mode that the UART signal links to each other with earphone interface.
The headset detection method is specially, the resistance R 1 of having connected respectively on the L channel voice signal pin one 50 of earphone and the line of right channel sound signal pin 120 and resistance R 2 are connected to ground, keeping the earphone signal line is low level, is set to the input high level state in mobile phone main control chip end interrupt signal.When not inserting earphone, because right channel sound signal pin 120 is a low level with pulleding down to, this moment right channel sound signal pin 120 and 30 conductings of signal interruption pin one are so interrupt signal is a low level; When inserting earphone, right channel sound signal pin 120 disconnects with signal interruption pin one 30, and at this moment interrupt signal produces interrupt signal from the low transition to the high level.
Mobile phone terminal of the present utility model can be divided into earphone and two kinds of situations of UART serial ports download in specific implementation process, when using UART serial ports download function, can be divided into the startup and shutdown two states again, now these several states is elaborated:
(1) under the mobile phone closed condition, C is connected with A1 in this moment selected cell, when mobile phone is pressed the start key, and base band main control chip electrification reset, the UART serial ports begins to wait for that judgement enters downloading mode or enters the normal boot-strap pattern by downloading the download command that line transmits from computer; Download line and receive download command if insert, mobile phone enters downloading mode, begins to carry out software download or renewal by UART_TXD holding wire 210 and UART_RXD holding wire 220; If (for example, do not receive present order in 2ms), mobile phone enters the normal boot-strap pattern at the appointed time.
(2) under the open state: acquiescence earphone interface of mobile phone signal configures is the UART signal, inserts if there is UART to download line, can carry out the mobile phone debugging mode.
When earphone interface during as ear-phone function, mobile phone can't be discerned earphone under off-mode, and it is also nonsensical promptly to enable identification.When mobile phone is under the open state when inserting earphone, the mobile phone main control chip detects earphone by interrupt signal and inserts and identify earphone; Then, the SEL end that disposes in first gating unit and second selected cell is the output high level state, and analog switch (single-pole double-throw switch (SPDT)) is switched to " C and A2 " state, and earphone signal is communicated with earphone interface, enters headset mode.
In sum, download line and the shared 3.5mm standard earphone of earphone interface, both saved interface, make cell phone appearance more attractive in appearance, help the miniaturization Design of mobile phone, also reduced the cost of product simultaneously by realized serial ports with upper type.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the utility model.

Claims (10)

1. a serial ports is downloaded line and the shared earphone interface of earphone, it comprises ground pin, L channel voice signal pin, the signal interruption pin that is connected with the interrupt signal control unit, idle pin, the right channel sound signal pin that is connected with the R channel control unit and microphone pin, it is characterized in that described L channel voice signal pin is connected with the L channel control unit or is connected with the UART_TXD holding wire by first gating unit; Described microphone pin is connected with the microphone control unit or is connected with the UART_RXD holding wire by second gating unit.
2. serial ports according to claim 1 is downloaded line and the shared earphone interface of earphone, it is characterized in that, described L channel voice signal pin and right channel sound signal pin are respectively by a grounding through resistance.
3. serial ports according to claim 1 is downloaded line and the shared earphone interface of earphone, it is characterized in that described first gating unit and second gating unit include the single-pole double throw analog switch.
4. serial ports according to claim 1 is downloaded line and the shared earphone interface of earphone, it is characterized in that, described earphone interface adopts 3.5mm standard earphone interface.
5. serial ports according to claim 1 is downloaded line and the shared earphone interface of earphone, it is characterized in that, between L channel voice signal pin and L channel control unit, be provided with first electric capacity, between right channel sound signal pin and R channel control unit, be provided with second electric capacity.
6. a serial ports is downloaded line and the shared earphone interface of earphone, it comprises ground pin, the L channel voice signal pin that is connected with the L channel control unit, the signal interruption pin that is connected with the interrupt signal control unit, idle pin, right channel sound signal pin and microphone pin, it is characterized in that described right channel sound signal pin is connected with the R channel control unit or is connected with the UART_TXD holding wire by first gating unit; Described microphone pin is connected with the microphone control unit or is connected with the UART_RXD holding wire by second gating unit.
7. serial ports according to claim 6 is downloaded line and the shared earphone interface of earphone, it is characterized in that, described L channel voice signal pin and right channel sound signal pin are respectively by a grounding through resistance.
8. serial ports according to claim 6 is downloaded line and the shared earphone interface of earphone, it is characterized in that described first gating unit and second gating unit include the single-pole double throw analog switch.
9. serial ports according to claim 6 is downloaded line and the shared earphone interface of earphone, it is characterized in that, between L channel voice signal pin and L channel control unit, be provided with first electric capacity, between right channel sound signal pin and R channel control unit, be provided with second electric capacity.
10. a portable terminal is characterized in that, comprises claim 1 or 5 described earphone interfaces.
CN2010205257724U 2010-09-09 2010-09-09 Earphone interface shared by serial port download line and earphone, and mobile terminal shared thereby Expired - Fee Related CN201805529U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102082846A (en) * 2010-12-02 2011-06-01 惠州Tcl移动通信有限公司 Terminal equipment with plurality of externally arranged shared interfaces
CN102769810A (en) * 2012-07-25 2012-11-07 惠州Tcl移动通信有限公司 Mobile terminal with a calling misoperation preventive function
CN103078224A (en) * 2013-01-07 2013-05-01 华为终端有限公司 Connecting line, control method, control circuit and electronic equipment
WO2013097356A1 (en) * 2011-12-26 2013-07-04 中兴通讯股份有限公司 Hdmi multiplexing method, hdmi, and hdmi-equipped device
CN103489431A (en) * 2012-10-18 2014-01-01 天津三星电子有限公司 Display terminal
CN103491235A (en) * 2012-06-12 2014-01-01 联想(北京)有限公司 Method and terminals for data transmission
CN103888873A (en) * 2014-03-04 2014-06-25 苏州佳世达电通有限公司 Electronic device and UART output system and method
CN104182315A (en) * 2014-08-29 2014-12-03 青岛海信电器股份有限公司 Circuit for controlling debugging function, electronic equipment and corresponding debugging equipment thereof
CN109218891A (en) * 2018-10-16 2019-01-15 上海畅联智融通讯科技有限公司 The earphone interface module and mobile terminal of multiplexing serial port function

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102082846A (en) * 2010-12-02 2011-06-01 惠州Tcl移动通信有限公司 Terminal equipment with plurality of externally arranged shared interfaces
CN102082846B (en) * 2010-12-02 2014-01-15 惠州Tcl移动通信有限公司 Terminal equipment with plurality of externally arranged shared interfaces
WO2013097356A1 (en) * 2011-12-26 2013-07-04 中兴通讯股份有限公司 Hdmi multiplexing method, hdmi, and hdmi-equipped device
CN103491235B (en) * 2012-06-12 2016-12-21 联想(北京)有限公司 A kind of data transmission method and terminal
CN103491235A (en) * 2012-06-12 2014-01-01 联想(北京)有限公司 Method and terminals for data transmission
CN102769810B (en) * 2012-07-25 2016-01-13 惠州Tcl移动通信有限公司 A kind of mobile terminal preventing call misoperation
CN102769810A (en) * 2012-07-25 2012-11-07 惠州Tcl移动通信有限公司 Mobile terminal with a calling misoperation preventive function
CN103489431A (en) * 2012-10-18 2014-01-01 天津三星电子有限公司 Display terminal
CN103489431B (en) * 2012-10-18 2015-09-09 天津三星电子有限公司 A kind of display terminal
CN103078224B (en) * 2013-01-07 2016-04-13 华为终端有限公司 Connecting line, control method, control circuit and electronic equipment
CN103078224A (en) * 2013-01-07 2013-05-01 华为终端有限公司 Connecting line, control method, control circuit and electronic equipment
CN103888873A (en) * 2014-03-04 2014-06-25 苏州佳世达电通有限公司 Electronic device and UART output system and method
CN103888873B (en) * 2014-03-04 2017-06-16 苏州佳世达电通有限公司 Electronic installation, UART output systems and method
CN104182315A (en) * 2014-08-29 2014-12-03 青岛海信电器股份有限公司 Circuit for controlling debugging function, electronic equipment and corresponding debugging equipment thereof
CN104182315B (en) * 2014-08-29 2017-11-07 青岛海信电器股份有限公司 A kind of circuit, electronic equipment and its corresponding commissioning device of control debugging function
CN109218891A (en) * 2018-10-16 2019-01-15 上海畅联智融通讯科技有限公司 The earphone interface module and mobile terminal of multiplexing serial port function

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Granted publication date: 20110420

Termination date: 20130909