CN2904085Y - Multifunctional adapter for cell phone - Google Patents
Multifunctional adapter for cell phone Download PDFInfo
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- CN2904085Y CN2904085Y CN 200620081561 CN200620081561U CN2904085Y CN 2904085 Y CN2904085 Y CN 2904085Y CN 200620081561 CN200620081561 CN 200620081561 CN 200620081561 U CN200620081561 U CN 200620081561U CN 2904085 Y CN2904085 Y CN 2904085Y
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- mobile phone
- switching device
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- power supply
- jtag
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Abstract
The utility model discloses a multi-function adaptation device for the mobile phone, comprising a mobile phone signal receiver connected to the I/O port of the mobile phone, a serial port which receives the input signal of the mobile phone and carries out level conversion, a USB interface and a JTAG interface and a charging unit which is connected to the outer power source and supplies power to the input terminal of the mobile phone battery after voltage stabilization. The utility model can realize multi-function application, at the same time can carry out communication of the mobile phone and PC machine, JTAG debug of the mobile phone and power supply and charging of the mobile phone. The utility model can be extensively applied in the debugging and maintenance phase of the mobile phone.
Description
Technical field
The utility model belongs to the mobile communication terminal technical field, more specifically to being used for mobile phone debugging, program download and serial ports, jtag interface, USB interface and the charging of maintenance, the switching device of the multiple function of power supply.
Background technology
Present mobile phone needs to carry out software debugging on stream, and debugging generally is to connect by JTAG (Joint Test Action Group) with ICD, and program is downloaded in the mobile phone and could debug.The serial ports of mobile phone also can be used for downloading and export some status information of mobile phone, as signaling message.Need JTAG and other serial ports, USB interface, charging input etc. to insert simultaneously during the mobile phone debugging, could make things convenient for debugging like this.So need connect the interface of all needs from cell phone mainboard.
JTAG connection design is the test point of placing the JTAG signal somewhere at cell phone mainboard in the mobile phone circuit design now, needs the position of 7 test points at least, has taken the PCB area of mainboard, will consider in advance when mobile phone PCB designs.Have two kinds of methods to be connected with ICD then: a kind of method is by soldered wires on test point, receives on the JTAG connector; Other method is to make a tooling device in addition, and cell phone mainboard is put on the frock, receives on the JTAG connector by the contact on the frock.These two kinds of methods are except increasing the extra work amount, and concerning mainboard independently, operation easily, but the mobile phone that installs casing is implemented very difficult need be dug on shell and open a gap this realization of having no idea when debugging and after sale service.And the serial ports of mobile phone, USB, charging inlet are inserted the IO mouth by tail and are picked out, and connect by corresponding line respectively again, and these interfaces can not use simultaneously.The method that adopts can not realize that mobile phone needs a plurality of serial ports or USB interface and serial ports to use simultaneously at present, and the shortcoming of this mobile phone debugging method of attachment is to adapt to actual debugging or maintenance needs.
Summary of the invention
The purpose of this utility model, just be to solve and need various external interfaces in mobile phone debugging, test, the maintenance process, and mobile phone does not pick out or picks out the problem that can not use numerous interfaces simultaneously simultaneously at present, a kind of design proposal of mobile phone multifunctional switching device is provided, make various interface comprise that jtag interface, serial ports, USB interface can use simultaneously, thereby reach the purpose that mobile phone makes things convenient for debugging, convenient for maintaining and test.
In order to achieve the above object, the utility model provides a kind of mobile phone multi-functional card extender, comprise the mobile phone signal connector that links to each other with the I/O port of mobile phone, receive the go forward side by side serial ports of line level conversion of mobile phone input signal, USB interface and jtag interface, and the connection external power source, the process voltage stabilizing offers the power supply-charging unit of battery of mobile phone input end.
The mobile phone multifunctional switching device comprises the serial ports more than 3 or 3, can pick out connecting line simultaneously and use.
The mobile phone multifunctional switching device comprises the RS-232 transceiver that is connected with serial ports, and wherein the RS-232 transceiver is selected the communication interface chip of MAX3245E model for use, has 3 the tunnel and sends 5 tunnel paths that receive.
The power supply unit of mobile phone multifunctional switching device is selected the low-dropout regulator of MIC29302 model for use.
JTAG on the multi-functional switching device, serial ports, USB, mobile phone power supply, charging can insert simultaneously.By the external power supply of card extender, power to mobile phone through the LDO on the card extender, be connected to the cell input terminal of mobile phone, for mobile phone provides stable power; By the charging input end on the card extender, realize charging to battery of mobile phone; By the usb connecting port on the card extender, realization Universal USB line is communicated by letter with mobile phone, and can realize the USB charge function; By the RS-232Transceiver on the card extender, realize the serial communication of mobile phone and PC, can there be 3 UART ports to communicate simultaneously; By the JTAG connectivity port on the card extender, realize that JTAG connects.
JTAG connectivity port and above-mentioned other port function can use simultaneously, realize the debugging to the every function of mobile phone.Because of the pin of mobile phone tail socket, connector limited, multiplexing realization more function that can be by pin.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 is the basic block scheme of multifunctional switching device;
Fig. 2 is the logic diagram of multifunctional switching device;
Fig. 3 is an embodiment power circuit principle figure of multifunctional switching device;
Fig. 4 is embodiment RS-232Transceiver circuit theory diagrams of multifunctional switching device.
Specific embodiment
As shown in Figure 1, the multi-functional card extender of mobile phone provides a plurality of ports of external connection, can receive the connector of outside corresponding USB, 3 serial ports, JTAG and power supplys etc. respectively, comprise the connector that links to each other with mobile phone on the multi-functional card extender of mobile phone, be 18PIN connector general on the mobile phone.
As shown in Figure 2, be the logic diagram of mobile phone multifunctional switching device, wherein the JTAG signal connecting line is multiplexing with other signal wire respectively, is used for increasing function at limited signal wire.What link to each other with mobile phone is the connector with 18 pins, and wherein the connection of serial ports need be carried out level conversion, and power supply comprises to mobile phone power supply 3.8V, gives RS-232Transceiver chip and JTAG power supply 3V.
Power circuit on the multi-functional card extender of mobile phone has two kinds of power supplys as shown in Figure 3 on the multi-functional card extender, and the one, to the power supply of mobile phone power supply, the 2nd, to the power supply of RS-232Transceiver chip and JTAG power supply.
The mobile phone power supply is made up of a low-dropout regulator (LDO), selects the MIC29302 of MICREL company for use.The key property of MIC29302 has: big electric current, in order to satisfy the supply current of mobile phone; Low pressure reduction has only 350 millivolts during full load; Low vagabond current; 4.1% output accuracy; Voltage can be regulated by non-essential resistance.
The output voltage of the low-dropout regulator of MIC29302 model can be regulated between 1.25V and maximum operating voltage 26V, realizes that by two resistance of R1, R2 that pin connects resistance will be selected for use bigger, to reduce current loss.The computing formula of resistance is
R2 selects 1M ohm for use in preference, and R1 selects 470K ohm for use, so V
OUTBe 3.88V.
Another gives the power supply of RS-232Transceiver chip and JTAG power supply, and the LDO that is exported by a fixed voltage 3.0V forms, and the input power supply is the output of MIC29302, and selecting model for use is the S1112830MC of Seiko Instr Inc.
As shown in Figure 4, the RS-232 transceiver is selected the beautiful MAX3245E that believes (MAXIM) company for use.MAX3245E is the EIA/TIA-232 communication interface chip of 3V power supply, has the low-power consumption shutdown mode of 1uA; Data rate up to 1Mbps; The enhancement mode esd protection.Integrated 3 the tunnel send 5 the tunnel receives paths, has formed 3 tunnel transmitting-receivings of native system.The external circuit of RS-232 transceiver is simple, only needs the C1-C4 electric capacity of totally 4 0.1uF.
Claims (4)
1. mobile phone multifunctional switching device, it is characterized in that comprising the mobile phone signal connector that links to each other with the I/O port of mobile phone, receive the go forward side by side serial ports of line level conversion of mobile phone input signal, USB interface and jtag interface, and the connection external power source, the process voltage stabilizing is provided to the power supply-charging unit of battery of mobile phone input end.
2. mobile phone multifunctional switching device according to claim 1 is characterized in that the mobile phone multifunctional switching device comprises the serial ports more than 3 or 3.
3. mobile phone multifunctional switching device according to claim 1 is characterized in that the RS-232 transceiver selects the communication interface chip of MAX3245E model for use, has 3 the tunnel and sends 5 tunnel paths that receive.
4. mobile phone multifunctional switching device according to claim 1 is characterized in that described power supply unit selects the low-dropout regulator of MIC29302 model for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620081561 CN2904085Y (en) | 2006-03-02 | 2006-03-02 | Multifunctional adapter for cell phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620081561 CN2904085Y (en) | 2006-03-02 | 2006-03-02 | Multifunctional adapter for cell phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2904085Y true CN2904085Y (en) | 2007-05-23 |
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ID=38079498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620081561 Expired - Fee Related CN2904085Y (en) | 2006-03-02 | 2006-03-02 | Multifunctional adapter for cell phone |
Country Status (1)
| Country | Link |
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| CN (1) | CN2904085Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963932A (en) * | 2010-08-27 | 2011-02-02 | 中兴通讯股份有限公司 | Device and method for debugging mobile terminal |
| CN101452051B (en) * | 2007-12-04 | 2011-06-08 | 联想移动通信科技有限公司 | Data processing device and method |
| CN103997449A (en) * | 2014-05-14 | 2014-08-20 | 航天科工深圳（集团）有限公司 | Interface conversion device |
| CN103995794A (en) * | 2014-05-14 | 2014-08-20 | 航天科工深圳（集团）有限公司 | Interface conversion device |
| CN104410270A (en) * | 2014-08-26 | 2015-03-11 | 上海耀华称重系统有限公司 | Power supply circuit used in field of explosion-proof weighing instrument |
| CN105376560A (en) * | 2014-08-22 | 2016-03-02 | 中国科学院西安光学精密机械研究所 | Universal adapter plate applicable between camera and acquisition computer |
-
2006
- 2006-03-02 CN CN 200620081561 patent/CN2904085Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101452051B (en) * | 2007-12-04 | 2011-06-08 | 联想移动通信科技有限公司 | Data processing device and method |
| CN101963932A (en) * | 2010-08-27 | 2011-02-02 | 中兴通讯股份有限公司 | Device and method for debugging mobile terminal |
| CN101963932B (en) * | 2010-08-27 | 2015-05-20 | 中兴通讯股份有限公司 | Device and method for debugging mobile terminal |
| CN103997449A (en) * | 2014-05-14 | 2014-08-20 | 航天科工深圳（集团）有限公司 | Interface conversion device |
| CN103995794A (en) * | 2014-05-14 | 2014-08-20 | 航天科工深圳（集团）有限公司 | Interface conversion device |
| CN105376560A (en) * | 2014-08-22 | 2016-03-02 | 中国科学院西安光学精密机械研究所 | Universal adapter plate applicable between camera and acquisition computer |
| CN104410270A (en) * | 2014-08-26 | 2015-03-11 | 上海耀华称重系统有限公司 | Power supply circuit used in field of explosion-proof weighing instrument |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |