CN201919055U - Mobile terminal test box based on inter-integrated circuit (I2C) bus - Google Patents
Mobile terminal test box based on inter-integrated circuit (I2C) bus Download PDFInfo
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- CN201919055U CN201919055U CN2010206843696U CN201020684369U CN201919055U CN 201919055 U CN201919055 U CN 201919055U CN 2010206843696 U CN2010206843696 U CN 2010206843696U CN 201020684369 U CN201020684369 U CN 201020684369U CN 201919055 U CN201919055 U CN 201919055U
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Abstract
The utility model discloses a mobile terminal test box based on an inter-integrated circuit (I2C) bus, which comprises a universal serial bus (USB) conversion chip, an I2C bus parallel I/O port extension chip and a buffer, wherein one end of the USB conversion chip is connected with an upper computer, the other end of the USB bus conversion chip is connected with the I2C bus parallel I/O port extension chip, the I2C bus parallel I/O port extension chip is connected with the buffer through an I/O port, the buffer is connected with a mobile terminal to be tested, the USB conversion chip communicates with the upper computer through a USB interface and the USB conversion chip communicates with the I2C bus parallel I/O port extension chip through an I2C bus. By using the mobile terminal test box based on the I2C bus, test work of all products on a Media Tech (MTK) platform and a Qualcomm CDMA Technologies (QCT) platform can be comprehensively covered, production cost is reduced, field maintenance is effectively simplified and production efficiency is greatly increased.
Description
Technical field
The utility model relates to the mobile terminal test field, in particular a kind of mobile terminal test box based on the I2C bus.
Background technology
Mobile terminal test box on the existing production line that is used to produce in batches portable terminal, emulative enhancing along with mobile communication terminal market, the increase that diversity requires, the increase of cost control demand, original mobile terminal test box can't satisfy existing demand.
On the other hand, along with the development and the electronics input/output control system development of technology (replacing PCI with USB) of PC technology, operating system, the general testing equipment based on the I2C bus has become a kind of trend.
The utility model content
The purpose of this utility model is to provide a kind of mobile terminal test box based on the I2C bus, be intended to solve existing mobile terminal test box cost height, and procurement cycle is long, is not easy to the problem of the maintenance of production line.
The technical solution of the utility model is as follows: a kind of mobile terminal test box based on the I2C bus, it comprises: the usb bus conversion chip, I2C bus parallel I/O mouth extended chip and buffer, described usb bus conversion chip one end connects host computer, the other end connects I2C bus parallel I/O mouth extended chip, described I2C bus parallel I/O mouth extended chip connects buffer by the I/O mouth, described buffering area connects tested portable terminal, communicate by letter by USB interface between described usb bus conversion chip and the host computer, described usb bus conversion chip and I2C bus parallel I/O mouth extended chip are by the I2C bus communication.
Described mobile terminal test box based on the I2C bus, wherein, described mobile terminal test box also comprises optical coupling isolator, the output port of described buffer connects the negative electrode of optical coupling isolator.
Described mobile terminal test box based on the I2C bus, wherein, described mobile terminal test box also comprises diverter switch, and described diverter switch one end connects comprehensive tester, and the other end connects tested mobile terminal.
Described mobile terminal test box based on the I2C bus wherein, also is provided with a UART communication module in the described mobile terminal test box, described UART communication module connects host computer and described buffer.
Described mobile terminal test box based on the I2C bus, wherein, described I2C bus parallel I/O mouth extended chip is parallel I/O mouth extended chip.
Described mobile terminal test box based on the I2C bus, wherein, the collection of described optical coupling isolator is output port very, and all is provided with pull-up resistor on each output port.
Described mobile terminal test box based on the I2C bus, wherein, described I2C bus 8 parallel-by-bit I/O mouth extended chips are provided with 12.
Described mobile terminal test box based on the I2C bus, wherein, described mobile terminal test box simulates 96 I/O mouths.
Described mobile terminal test box based on the I2C bus, wherein, described buffer is 8 line buffers.
Described mobile terminal test box based on the I2C bus, wherein, also be provided with Multifunctional relay in the described mobile terminal test box, described Multifunctional relay is separately positioned on the interface channel of described usb bus conversion chip and UART communication module and host computer.
The beneficial effects of the utility model: the utility model proposes by adopting special-purpose usb bus connect chip USB212C realization host computer and the immediate data transmission between the slave computer controller, scl line and sda line are provided under the synchronous serial interface mode, in addition, adopt master chip PCF8574 to convert SCL and SDA to 8 I/O mouth signals; By disposable this chip of employing polylith, design general automation mobile terminal test station.The utility model can cover the test job of MTK and all products of QCT platform comprehensively, has reduced production cost, effectively simplifies on-the-spot maintenance, significantly increases production efficiency.
Description of drawings
The system architecture diagram of the testing station that Fig. 1 provides for the utility model.
Fig. 2 is the functional circuit of usb bus connect chip USB212C.
Fig. 3 is the local circuit schematic diagram of one 8 parallel-by-bit I/O mouth of a PCF8574T chip simulation.
Fig. 4 provides the working method system block diagram of 1 holder 2 of test macro for the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, clear and definite, below the utility model is further described with reference to the accompanying drawing embodiment that develops simultaneously.
Referring to Fig. 1, the mobile terminal test box 2 that the utility model provides comprises: usb bus conversion chip 21, one or more I2C bus parallel I/O mouth extended chip 22 and with the corresponding buffer 23 of I2C bus parallel I/O mouth extended chip quantity, described usb bus conversion chip 21 1 ends connect host computer 1, the other end connects one or more I2C bus parallel I/O mouth extended chips 22, described I2C bus parallel I/O mouth extended chip 22 connects buffer 23 by the I/O mouth, and described buffer 23 connects tested portable terminal 3.Communicate by letter by USB interface between described usb bus conversion chip 21 and the host computer 1, described usb bus conversion chip 21 and one or more I2C bus parallel I/O mouth extended chips 22 are by the I2C bus communication.
Described test macro is used to finish PT(Para System Test, board level test), BT(Bluetooth Test, bluetooth test) and FT (Final Test, final inspection) test.
A kind of preferred embodiment of the present utility model provides clock cable (scl line) and data wire (sda line) for adopting special-purpose usb bus connect chip USB212C realization host computer and the transfer of data between the slave computer controller under the synchronous serial interface mode.The benefit that adopts this chip is the monitoring that no longer needs processors such as DSP, MCU; Scl line and sda line are provided under the synchronous serial interface mode, the PC host computer can be very easily to having I2C interface, TWI interface (Two-wire Serial Interface, two linear system row interfaces) or the portable terminal of SMBUS interface (System Management Bus, System Management Bus interface) read and write.
Be illustrated in figure 2 as the functional circuit of usb bus connect chip USB212C, described usb bus connect chip USB212C is connected to host computer 1 by connector P1.Described usb bus connect chip USB212C has following characteristics: 1, full speed USB interface, compatible USB2.0.
2, cost is low, directly changes the ancillary equipment of former I2C interface.
3, adopt the FIexWireTM technology, can realize the synchronous serial interface of flexile 2 lines to 5 lines by software.
4,, support synchronous serial interfaces commonly used such as 2 and 4 wire as the Host/Master host side.
5,2 line system I2C/IIC/TWI/SMBUS interfaces are supported 20KHz/ 100KHz/ 400KHz/ 750KHz.
In addition, a kind of preferred embodiment of the present utility model adopts PCF8574 as I2C bus parallel I/O mouth extended chip 22, converts scl line and sda line to 8 I/O signals.The chip of the PCF8574 series that present embodiment adopts can be simulated 8 I/O mouths, and usb bus connect chip USB212C can connect the chip of 16 PCF8574 series, and therefore can simulate 16*8=128 I/O mouth removes control terminal.And only adopted 12 interfaces wherein promptly to be provided with 12 I2C bus parallel I/O mouth extended chip PCF8574 in the utility model, wherein 1 interface has 8 (0-7).Each interface integral body can design the output and the input state of each I/O mouth, so just can simulate the state (realization mobile phone test) that 12*8=96 I/O mouth removes to control anchor clamps.
Referring to Fig. 3 is the local circuit schematic diagram of an interface, PCF8574T is a special I2C bus 8 parallel-by-bit I/O mouth extended chips, 74HC240 is 8 line buffers, mainly improves ternary memory address driver, clock driver and bus direction transceiver performance.TLP521-4 is one 4 road optical coupling isolator, plays the buffer action of input/output terminal.Also available other like products of TLP521-4 chip substitute, as long as have the input and output of isolation effect.
8 road output port P0 of described PCF8574T chip, P1, P2, P3, P4, P5, P6, corresponding respectively 8 road input port 1A1 that connect buffer of P7,1A2,1A3,1A4,2A1,2A2,2A3,2A4,8 tunnel output 1Y1 of described buffer, 1Y2,1Y3,1Y4,2Y1,2Y2,2Y3,2Y4 is connected on each negative electrode of two 4 road optical coupling isolator TLP521-4, the collection of described optical coupling isolator TLP521-4 is output port very, and two optical coupling isolators one have 8 road output ports and are respectively: Buf prot0_0, Buf prot 0_1, Buf prot 0_2, Buf prot 0_3, Buf prot 0_4, Buf prot 0_5, Buf prot 0_6, Buf prot 0_7.All be provided with pull-up resistor RP on each output port.
Using binary channels to two portable terminals (for example mobile phone) when testing simultaneously, allow mobile phone enter test pattern by host computer PC, this subprogram can be carried out synchronously to two mobile phones, but program when using the comprehensive tester test is to carry out synchronously to base band and radio frequency; In order to improve testing efficiency, in a kind of preferred embodiment of the present utility model, forward part to be carried out synchronously, the rear section utilizes a diverter switch (SPDT SWITCH) to realize the mutual switching of program.
Physical circuit block diagram when using binary channels as shown in Figure 4, host computer 1 is by the mobile terminal test box 2(I2C Test Box based on the I2C bus) to be connected with two portable terminals simultaneously be tested mobile terminal 3, be provided with the power module 24 that connects civil power in the described mobile terminal test box 2, be used for providing power supply to buffer 23, I2C bus parallel I/O mouth extended chip 22 and usb bus connect chip 21.Also be provided with one in the described mobile terminal test box 2 and switch switch 26, described diverter switch 26 1 ends connect comprehensive tester 28, and the other end connects portable terminal A and portable terminal B.Described diverter switch 26 is a single-pole double-throw switch (SPDT).The power supply of described portable terminal A and portable terminal B provides by external programmable power supply 27.Also be provided with a UART communication module 25 in the described mobile terminal test box 2, described host computer 1 connects buffer 23 by described UART communication module 25.
When portable terminal A when utilizing comprehensive tester 28 test, portable terminal B then makes its testing engineering pattern that enters appointment or base band test by common program.This test macro adopts the working method of 1 holder 2, and efficient can promote more than 25%.
PCF8574 chip among the figure can adopt the chip of any I2C of having bus functionality, and the UART signal also can utilize usb signal to convert in addition.
The utility model has been expanded the UART communication mode in this test macro, keep two kinds of communication mode coexistences of USB and UART, in test fixture, utilizes Multifunctional relay to finish the switching of two kinds of communication patterns.Because original equipment is only supported USB low speed and is communicated by letter at full speed, usb communication is to line length simultaneously, wire rod is had relatively high expectations, especially more obvious to the 3G product, the utility model makes described mobile terminal test box support the communication pattern of USB and UART (Universal Asynchronous Receiver/Transmitter, universal asynchronous reception/dispensing device) simultaneously by increasing the UART communication module.For this reason, improved the stability of communication greatly, the expanding communication pattern.Because the communication signal of computer serial ports output is a Transistor-Transistor Logic level, adds known change-over circuit and just can realize communicating by letter of mobile phone and host computer PC.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or conversion, all these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (10)
1. mobile terminal test box based on the I2C bus, it is characterized in that, comprise: the usb bus conversion chip, I2C bus parallel I/O mouth extended chip and buffer, described usb bus conversion chip one end connects host computer, the other end connects I2C bus parallel I/O mouth extended chip, described I2C bus parallel I/O mouth extended chip connects buffer by the I/O mouth, described buffer connects tested portable terminal, communicate by letter by USB interface between described usb bus conversion chip and the host computer, described usb bus conversion chip and I2C bus parallel I/O mouth extended chip are by the I2C bus communication.
2. the mobile terminal test box based on the I2C bus according to claim 1 is characterized in that described mobile terminal test box also comprises optical coupling isolator, and the output port of described buffer connects the negative electrode of optical coupling isolator.
3. the mobile terminal test box based on the I2C bus according to claim 1 is characterized in that described mobile terminal test box also comprises diverter switch, and described diverter switch one end connects comprehensive tester, and the other end connects tested mobile terminal.
4. the mobile terminal test box based on the I2C bus according to claim 1 is characterized in that, also is provided with a UART communication module in the described mobile terminal test box, and described UART communication module connects host computer and described buffer.
5. the mobile terminal test box based on the I2C bus according to claim 1 is characterized in that, described I2C bus parallel I/O mouth extended chip is parallel I/O mouth extended chip.
6. the mobile terminal test box based on the I2C bus according to claim 2 is characterized in that the collection of described optical coupling isolator is output port very, and all is provided with pull-up resistor on each output port.
7. the mobile terminal test box based on the I2C bus according to claim 5 is characterized in that, described I2C bus 8 parallel-by-bit I/O mouth extended chips are provided with 12.
8. the mobile terminal test box based on the I2C bus according to claim 7 is characterized in that described mobile terminal test box simulates 96 I/O mouths.
9. the mobile terminal test box based on the I2C bus according to claim 1 is characterized in that described buffer is 8 line buffers.
10. the mobile terminal test box based on the I2C bus according to claim 4, it is characterized in that, also be provided with Multifunctional relay in the described mobile terminal test box, described Multifunctional relay is separately positioned on the interface channel of described usb bus conversion chip and UART communication module and host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206843696U CN201919055U (en) | 2010-12-28 | 2010-12-28 | Mobile terminal test box based on inter-integrated circuit (I2C) bus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206843696U CN201919055U (en) | 2010-12-28 | 2010-12-28 | Mobile terminal test box based on inter-integrated circuit (I2C) bus |
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| CN201919055U true CN201919055U (en) | 2011-08-03 |
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| CN2010206843696U Expired - Fee Related CN201919055U (en) | 2010-12-28 | 2010-12-28 | Mobile terminal test box based on inter-integrated circuit (I2C) bus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436433A (en) * | 2011-11-07 | 2012-05-02 | 惠州Tcl移动通信有限公司 | Device and method for downloading mobile terminal data |
| CN102866683A (en) * | 2012-07-26 | 2013-01-09 | 苏州市大富通信技术有限公司 | Signal conversion device and automatic testing system |
| CN103049357A (en) * | 2011-10-12 | 2013-04-17 | 中盈创信(北京)商贸有限公司 | Electronic circuit product chip scale maintenance intelligent detection card |
| CN112486756A (en) * | 2020-11-26 | 2021-03-12 | 江苏科大亨芯半导体技术有限公司 | Method for debugging chip by using extended I2C protocol, storage medium and electronic equipment |
| CN113656334A (en) * | 2020-05-12 | 2021-11-16 | 大唐移动通信设备有限公司 | Data transmission processing method and device |
| CN114564428A (en) * | 2022-01-19 | 2022-05-31 | 中国电子科技集团公司第十研究所 | Airborne electronic equipment I/O port expansion system |
-
2010
- 2010-12-28 CN CN2010206843696U patent/CN201919055U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049357A (en) * | 2011-10-12 | 2013-04-17 | 中盈创信(北京)商贸有限公司 | Electronic circuit product chip scale maintenance intelligent detection card |
| CN103049357B (en) * | 2011-10-12 | 2017-05-31 | 中盈创信(北京)商贸有限公司 | Electronic circuit product chip-scale maintenance intelligent detection card |
| CN102436433A (en) * | 2011-11-07 | 2012-05-02 | 惠州Tcl移动通信有限公司 | Device and method for downloading mobile terminal data |
| CN102436433B (en) * | 2011-11-07 | 2016-06-15 | 惠州Tcl移动通信有限公司 | A kind of mobile terminal data download apparatus and method |
| CN102866683A (en) * | 2012-07-26 | 2013-01-09 | 苏州市大富通信技术有限公司 | Signal conversion device and automatic testing system |
| CN102866683B (en) * | 2012-07-26 | 2014-12-17 | 苏州市大富通信技术有限公司 | Signal conversion device and automatic testing system |
| CN113656334A (en) * | 2020-05-12 | 2021-11-16 | 大唐移动通信设备有限公司 | Data transmission processing method and device |
| CN113656334B (en) * | 2020-05-12 | 2023-08-08 | 大唐移动通信设备有限公司 | Data transmission processing method and device |
| CN112486756A (en) * | 2020-11-26 | 2021-03-12 | 江苏科大亨芯半导体技术有限公司 | Method for debugging chip by using extended I2C protocol, storage medium and electronic equipment |
| CN112486756B (en) * | 2020-11-26 | 2024-05-24 | 江苏科大亨芯半导体技术有限公司 | Method for debugging chip by using extended I2C protocol, storage medium and electronic equipment |
| CN114564428A (en) * | 2022-01-19 | 2022-05-31 | 中国电子科技集团公司第十研究所 | Airborne electronic equipment I/O port expansion system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20121228 |