CN105718407B - The USB switch of chip controls - Google Patents
The USB switch of chip controls Download PDFInfo
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- CN105718407B CN105718407B CN201410734226.4A CN201410734226A CN105718407B CN 105718407 B CN105718407 B CN 105718407B CN 201410734226 A CN201410734226 A CN 201410734226A CN 105718407 B CN105718407 B CN 105718407B
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Abstract
The present invention discloses a kind of USB switch of chip controls comprising：USB interface in USB male joint, with computer board is connected, and there are four USB3.0 signal pins, two USB2.0 signal pins for the USB male joint tool；USB females are connected with the USB interface of USB3.0 equipment, and the USB females tool there are four USB3.0 signal pins, two USB2.0 signal pins, also docked by positive pole pin, grounding pin respectively with the USB male joint by the USB females；Switching circuit, the switching circuit include a selection chip, and there is a selection end, first to be chosen end, the second selected end, triggering end for described selection chip one end, and the pin at the selection end is chosen end with described first respectively, the pin at the second selected end corresponds.Reduce test equipment, avoids part plug damage and operational trouble, save working hour.
Description
【Technical field】
The present invention relates to switch, more particularly to a kind of USB switch of chip controls.
【Background technology】
For electronic products such as laptops, there would generally be several USB (Universal Serial thereon
Bus, universal serial bus) interface.The current USB interface being set on electronic product is all usually USB3.0 interfaces, in electronics
Before product export, it can be tested to ensure that the function of each interface is qualified.For the interface of USB3.0, in order to backward compatible, no
But need to test it and connect whether USB3.0 equipment can work normally, it is also necessary to which can the equipment of test connection USB2.0 normal work
Make.USB2.0 equipment can use to one group of transmission (transport), receive (receive) pin, and USB3.0 equipment can use
To two groups of transmissions, receive pin.
Current test mode is equipment (being, for example, USB flash disk), the equipment (being, for example, USB flash disk) point of USB3.0 using USB2.0
The other USB interface to the electronic product carries out USB2.0, USB3.0 functional test, therefore needs use difference in test
USB device, and need plugged twice.
As it can be seen that using above-mentioned test mode, often, test process trouble expends working hour and easily causes plug damage for plug
It is bad；Meanwhile needing to use two class USB flash disks, cause unnecessary waste.
In view of this, it is really necessary to develop a kind of USB switch of chip controls, to solve the above problems.
【Invention content】
Therefore, the purpose of the present invention is to provide a kind of USB switch of chip controls, solve to backward compatible USB3.0
Equipment switches over, to reach the function that it is operated in respectively under USB2.0 and USB3.0 states.
In order to achieve the above object, the USB switch of chip controls provided by the invention comprising：
USB interface in USB male joint, with computer board is connected, and the USB male joint tool draws there are four USB3.0 signals
Foot, two USB2.0 signal pins；
USB females are connected with the USB interface of USB3.0 equipment, and the USB females tool draws there are four USB3.0 signals
Foot, two USB2.0 signal pins, the USB females also pass through positive pole pin, grounding pin respectively with the USB male joint
Docking；
Switching circuit, the switching circuit include a selection chip, and described selection chip one end has a selection end, first
Selected end, second are chosen end, triggering end, and the pin at the selection end is chosen drawing for end with the described first selected end, second respectively
Foot corresponds, when the triggering end receives the first level, each pin at the selection end and respectively drawing for the described first selected end
Foot connects one to one, and when the triggering end receives second electrical level, each pin at the selection end is switched to and second quilt
Each pin at end is selected to connect one to one, each pin at the selection end connects one to one four USB3.0 of the USB male joint
The selection end pin of signal pins, two USB2.0 signal pins, the described first selected corresponding USB male joint four in end
Four pins of USB3.0 signal pins position are also corresponded with four USB3.0 signal pins of the USB females respectively to be connected
Connect, two pins of described second selected corresponding described two USB2.0 signal pins positions of USB male joint in end also respectively with it is described
Two USB2.0 signal pins of USB females connect one to one, described first is chosen end and second selected remaining pin held
Vacantly.
Optionally, which also has voltage conversion circuit, connects respectively with the positive pole pin, grounding pin
It connects, the voltage conversion circuit is also connect with the selection chip, to the selection chip power supply.
Optionally, the switch further includes switching switch, and input terminal selection connects the voltage conversion circuit or connects
Ground, output end connect the triggering end of the selection chip.
Optionally, first level is high level, and the second electrical level is low level.
Optionally, described to select chip for ASM1445TQFN42 IC chips.
Compared to the prior art, using the USB switch of the chip controls of the present invention, pass through cutting for the switching switch
It changes, changes the level of the selection chip triggering end, what the selection chip selection was connect with the selection end is described first
Selected end or the second selected end, USB2.0 signals are carried out so as to reach the computer board with the USB3.0 equipment
The connection of pin or the connection of USB3.0 signal pins, to reach respectively the USB3.0 equipment be operated in USB2.0 or
Function under USB3.0 states is to test the computer board.As it can be seen that may achieve to computer machine using a USB3.0 equipment
The test of two kinds of functions of platform, reduces test equipment；Meanwhile it avoiding using caused by the multiple plug of two kinds of USB devices
Plug damage and operational trouble, save working hour.
【Description of the drawings】
Fig. 1 is schematically shown as the schematic diagram of application structure of one preferred embodiment of USB switch of the chip controls of the present invention.
Fig. 2 is schematically shown as the structural schematic diagram of one preferred embodiment of USB switch of the chip controls of the present invention.
【Specific implementation mode】
Fig. 1, Fig. 2 are please referred to, Fig. 1 is schematically shown as one preferred embodiment of USB switch of the chip controls of the present invention
The structure that schematic diagram of application structure, Fig. 2 are schematically shown as one preferred embodiment of USB switch switch of the chip controls of the present invention is shown
It is intended to.
In order to achieve the above object, the USB switch of chip controls provided by the invention, the switch 100 include：
USB male joint 101, with computer board 200 (be, for example, laptop, it is without being limited thereto herein, can be other to be measured
Electronic product) on USB interface 201 be connected, the USB male joint 101 tool there are four USB3.0 signal pins 103~
106, two USB2.0 signal pins 115~116；
USB females 102 are connected with the USB interface 301 of USB3.0 equipment 300 (can be USB flash disk), the USB females
102 tools there are four 107~110, two USB2.0 signal pins 111~112 of USB3.0 signal pins, the USB females 102 with
The USB male joint 101 is also docked by positive pole pin 113 (can be 5V), grounding pin 114 respectively；
Switching circuit 103, the switching circuit 103 include a selection chip, and described selection chip one end has a selection
End, the first selected end, the second selected end, triggering end, described selection end (DA0+, DA0-, DA1+, DA1-, DA2+, DA2-, DA3
+, DA3-) pin respectively with the pin at the described first selected end (DB0+, DB0-, DB1+, DB1-, DB2+, DB2-, DB3+,
DB3-), the pin (DC0+, DC0-, DC1+, DC1-, DC2+, DC2-, DC3+, DC3-) at the second selected end corresponds, described
When triggering end (SEL) receives the first level, each pin at the selection end and each pin at the described first selected end correspond
It connects (DAx=DBx), when the triggering end receives second electrical level, each pin at the selection end is switched to and second quilt
Each pin at end is selected to connect one to one (DAx=DCx), each pin at the selection end connects one to one the USB male joint
(remaining pin DA3+, DA3- are outstanding for 101 4 USB3.0 signal pins, 103~106, two USB2.0 signal pins 115~116
It is empty), four pins of described first selected corresponding described 101 4 103~106 positions of USB3.0 signal pins of USB male joint in end
(DB0+, DB0-, DB1+, DB1-) is also a pair of with four USB3.0 signal pins 107 of the USB females 102~110 1 respectively
107~110, described second selected corresponding described 101 two 115~116 positions of USB2.0 signal pins of USB male joint in end should be connected
Two pins (DC2+, DC2-) it is also a pair of with two USB2.0 signal pins 111 of the USB females 102~112 1 respectively
Should connect, remaining pin at the first selected end and the second selected end it is hanging.
Wherein, the switch 100 can also have voltage conversion circuit 117, respectively with the positive pole pin
113, grounding pin 114 connects, and the voltage conversion circuit 117 is also connect with the power end of the selection chip, to the choosing
Select chip power supply.
Wherein, the switch 100 can also include switching switch 118, the input terminal selection connection of the switching switch 118
The voltage conversion circuit 117 or ground connection, output end connect the triggering end of the selection chip.
Wherein, first level can be high level, and the second electrical level is low level.
It is wherein, described that select chip can be ASM1445TQFN42 IC chips.
The choosing is changed by the switching of the switching switch 118 using the USB switch of the chip controls of the present invention
Select the level of chip triggering end, what the selection chip selection connect with the selection end is described first to be chosen to hold or described the
Two selected ends, the company of USB2.0 signal pins is carried out so as to reach the computer board 200 with the USB3.0 equipment 300
It connects or the connection of USB3.0 signal pins, USB2.0 or USB3.0 shapes is operated in reach the USB3.0 equipment 300 respectively
Function under state is to test the computer board 200.As it can be seen that may achieve to computer board using a USB3.0 equipment 300
The test of 200 two kinds of functions reduces test equipment；Meanwhile it avoiding using caused by the multiple plug of two kinds of USB devices
Plug damage and operational trouble, save working hour.
It is noted that the present invention is not limited to the above embodiment, any person skilled in the art is based on this hair
Bright technical solution both falls within the protection model of the present invention to any simple modification, equivalent change and modification made by above-described embodiment
In enclosing.
Claims (5)
1. a kind of USB switch of chip controls, which is characterized in that it includes：
USB interface in USB male joint, with computer board is connected, USB3.0 signal pins that there are four the USB male joint tools,
Two USB2.0 signal pins；
USB females are connected with the USB interface of USB3.0 equipment, USB3.0 signal pins that there are four the USB females tools,
Two USB2.0 signal pins, the USB females also pass through positive pole pin, grounding pin pair respectively with the USB male joint
It connects；
Switching circuit, the switching circuit include a selection chip, and there is a selection end, first to be chosen for described selection chip one end
End, the second selected end, triggering end, the pin at the selection end are chosen the pin one at end, the second selected end with described first respectively
One corresponds to, when the triggering end receives the first level, each pin one of each pin at the selection end and the described first selected end
One is correspondingly connected with, and when the triggering end receives second electrical level, each pin at the selection end is switched to and the described second selected end
Each pin connect one to one, each pin at the selection end connects one to one four USB3.0 signals of the USB male joint
Pin, two USB2.0 signal pins, described first selected corresponding described four USB3.0 signal pins positions of USB male joint in end
Four pins also connect one to one with four USB3.0 signal pins of the USB females respectively, described second is chosen end pair
Answer two pins of two USB2.0 signal pins positions of the USB male joint also respectively with two USB2.0 of the USB females
Signal pins connect one to one, the first selected end and second selected remaining pin held are hanging.
2. the USB switch of chip controls as described in claim 1, which is characterized in that the switch also has voltage conversion
Circuit is connect with the positive pole pin, grounding pin respectively, and the voltage conversion circuit also connects with the selection chip
It connects, to the selection chip power supply.
3. the USB switch of chip controls as claimed in claim 2, which is characterized in that the switch further includes that switching is opened
It closes, the input terminal selection of switching switch connects the voltage conversion circuit or ground connection, output end connect the selection chip
The triggering end.
4. the USB switch of chip controls as described in claim 1, which is characterized in that first level is high level, institute
It is low level to state second electrical level.
5. the USB switch of the chip controls as described in any one of claim 1-4, which is characterized in that the selection chip
For ASM1445TQFN42 IC chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734226.4A CN105718407B (en) | 2014-12-05 | 2014-12-05 | The USB switch of chip controls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734226.4A CN105718407B (en) | 2014-12-05 | 2014-12-05 | The USB switch of chip controls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105718407A CN105718407A (en) | 2016-06-29 |
| CN105718407B true CN105718407B (en) | 2018-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410734226.4A Active CN105718407B (en) | 2014-12-05 | 2014-12-05 | The USB switch of chip controls |
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| CN (1) | CN105718407B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205982507U (en) * | 2016-08-23 | 2017-02-22 | 广州视睿电子科技有限公司 | Testing arrangement of USB3. 0 equipment |
| CN112630903B (en) * | 2020-12-28 | 2022-05-24 | 深圳新联胜光电科技有限公司 | Active optical cable based on Type-C interface |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036124A (en) * | 2011-10-08 | 2013-04-10 | 英业达股份有限公司 | Transfer die for test and relative testing method of transfer die |
| CN103293351A (en) * | 2012-02-27 | 2013-09-11 | 鸿富锦精密工业（深圳）有限公司 | Usb interface test load circuit |
| CN103577366A (en) * | 2012-07-19 | 2014-02-12 | 财团法人工业技术研究院 | Portable electronic device and data transmission method thereof |
| CN103795586A (en) * | 2012-11-02 | 2014-05-14 | 银灿科技股份有限公司 | Switching type communication interface detection method and apparatus |
| CN204557469U (en) * | 2014-12-05 | 2015-08-12 | 神讯电脑(昆山)有限公司 | The USB switch of chip controls |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082373B (en) * | 2009-11-27 | 2015-03-25 | 威刚科技（苏州）有限公司 | Chip-on-board (COB) storing device |
-
2014
- 2014-12-05 CN CN201410734226.4A patent/CN105718407B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036124A (en) * | 2011-10-08 | 2013-04-10 | 英业达股份有限公司 | Transfer die for test and relative testing method of transfer die |
| CN103293351A (en) * | 2012-02-27 | 2013-09-11 | 鸿富锦精密工业（深圳）有限公司 | Usb interface test load circuit |
| CN103577366A (en) * | 2012-07-19 | 2014-02-12 | 财团法人工业技术研究院 | Portable electronic device and data transmission method thereof |
| CN103795586A (en) * | 2012-11-02 | 2014-05-14 | 银灿科技股份有限公司 | Switching type communication interface detection method and apparatus |
| CN204557469U (en) * | 2014-12-05 | 2015-08-12 | 神讯电脑(昆山)有限公司 | The USB switch of chip controls |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105718407A (en) | 2016-06-29 |
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