CN210109804U - Interface circuit system for microcomputer control - Google Patents
Interface circuit system for microcomputer control Download PDFInfo
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- CN210109804U CN210109804U CN201921386595.3U CN201921386595U CN210109804U CN 210109804 U CN210109804 U CN 210109804U CN 201921386595 U CN201921386595 U CN 201921386595U CN 210109804 U CN210109804 U CN 210109804U
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Abstract
The utility model provides an interface circuit system for microcomputer control, including voltage switching module and USB switching module, the voltage switching module includes first channel switch control unit and second channel switch control unit, the second channel switch control unit controls the enabling of first channel switch control unit; the input end of the first channel switch control unit is connected with a Type C interface of the microcomputer, the input end of the second channel switch control unit is connected with a POGO interface of the microcomputer, and the output ends of the first channel switch control unit and the second channel switch control unit are commonly connected to a charging micro-control interface of the microcomputer; the output end of the USB switching module is connected with the Type C interface or the POGO interface. Thereby realize the USB interface function of Type C interface and POGO interface to when two interface device coexist, POGO interface device is preferred.
Description
Technical Field
The present application relates to the field of interface circuit technology, and more particularly, to an interface circuit system for microcomputer control.
Background
The external USB interface of current panel circuit is MICRO B, TYPE C usually, can satisfy most users' demand, also can realize more convenient connection demand through external bracket accessory simultaneously, realizes charging, the function of peripheral hardware such as connection computer, cell-phone through the POGO interface. However, at present, the TYPEC interface and the POGO interface do not implement the USB interface function, and when devices of the two interfaces exist at the same time, the function of the preferred POGO interface cannot be implemented.
SUMMERY OF THE UTILITY MODEL
The utility model provides an interface circuit system for microcomputer control has solved TYPE C interface and POGO interface among the prior art and has not realized the USB interface function to and when the equipment of two interfaces exists simultaneously, can't realize the problem of the function of priority POGO interface.
In order to solve the above technical problem, according to an aspect of the present invention, there is provided an interface circuit system for microcomputer control, including a voltage switching module and a USB switching module, wherein the voltage switching module includes a first channel switch control unit and a second channel switch control unit, and the second channel switch control unit controls enabling of the first channel switch control unit;
the input end of the first channel switch control unit is connected with a Type C interface of the microcomputer, the input end of the second channel switch control unit is connected with a POGO interface of the microcomputer, and the output ends of the first channel switch control unit and the second channel switch control unit are commonly connected to a charging micro-control interface of the microcomputer;
the output end of the USB switching module is connected with the Type C interface or the POGO interface and is used for switching the channel of the Type C interface and the channel of the POGO interface according to the output level of the microcomputer.
Furthermore, the interface circuit system comprises a current detection module which is connected with a charging micro-control interface of the microcomputer.
Further, the voltage switching module includes a boosting unit,
the output end of the boosting unit is connected with the input end of the second channel switch control unit and the POGO interface;
and the input end of the boosting unit is connected with the current detection module.
Further, the USB switching module includes an interface current detection module, and the Type-C interface includes a first external interface and a second external interface;
the interface current detection module is respectively connected with the first external interface and the second external interface and used for identifying the types of the external connection equipment of the first external interface and the second external interface according to the detected current.
Further, the POGO interface comprises a USB identity recognition unit used for recognizing the type of the equipment connected with the POGO interface.
Further, the second channel switch control unit comprises a preset state control port, the first channel switch control unit comprises an enable port, and the preset state control port is connected with the enable port.
Compared with the prior art, the utility model provides an interface circuit system for microcomputer control, including voltage switching module and USB switching module, voltage switching module includes first channel switch the control unit and second channel switch the control unit, the second channel switch the control unit control the enable of first channel switch the control unit; the input end of the first channel switch control unit is connected with a Type C interface of the microcomputer, the input end of the second channel switch control unit is connected with a POGO interface of the microcomputer, and the output ends of the first channel switch control unit and the second channel switch control unit are commonly connected to a charging micro-control interface of the microcomputer; the output end of the USB switching module is connected with the Type C interface or the POGO interface and is used for switching the channel of the Type C interface and the channel of the POGO interface according to the output level of the microcomputer. Thereby realize the USB interface function of Type C interface and POGO interface to when two interface device coexist, POGO interface device is preferred.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 shows a schematic circuit block diagram of an interface circuit system for microcomputer control according to an aspect of the present invention.
The same or similar reference numbers in the drawings identify the same or similar elements.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic circuit module diagram of an interface circuit system for microcomputer control provided in an aspect of the present invention, including a voltage switching module 1 and a USB switching module 2, where the voltage switching module 1 includes a first channel switch control unit 11 and a second channel switch control unit 12, and the second channel switch control unit 12 controls enabling of the first channel switch control unit 11; the input end of the first channel switch control unit 11 is connected with a Type C interface 3 of the microcomputer, the input end of the second channel switch control unit 12 is connected with a POGO interface 4 of the microcomputer, and the output ends of the first channel switch control unit 11 and the second channel switch control unit 12 are connected to a charging micro-control interface 5 of the microcomputer together; the output end of the USB switching module 2 is connected with the Type C interface 3 or the POGO interface 4 and is used for switching the channel of the Type C interface 3 and the channel of the POGO interface 4 according to the output level of the microcomputer. Here, the voltage switching module 1 is responsible for switching the power supply of the microcomputer, and the first channel switch control unit 11 and the second channel switch control unit 12 are power supply path switches Q1 and Q2 to implement USB interface functions of Type C and POGO. The input of Q1 is connected with TYPE C interface, the input of Q2 is connected with POGO interface, the output is connected with charging micro-control interface (charging IC interface) in the microcomputer, Q1 and Q2 are channel switch control modules of power Voltage (VBUS) and have overvoltage protection (OVP) function; q2 controls the enabling of Q1 to cut off Q1 when Q2 works, and make Q1 stop working, thereby realizing that Q2 has priority greater than Q1, and further realizing the function that POGO interface equipment has priority when two port equipment exist simultaneously. Further, the second channel switch control unit 12 includes a preset state control port 121, the first channel switch control unit 11 includes an enable port 111, and the preset state control port 121 is connected to the enable port 111. Here, the state control port 121(RX _ N) of Q2 controls the enable pin of Q1, so that the operation enable of Q1 is controlled by Q2, and further, the priority relationship between Q1 and Q2 is satisfied, and the priority function of the POGO interface device is realized. USB switches module 2 and accomplishes for one USB passageway change over switch who advances two, by material USB switch change over switch for switch the passageway of TYPE C interface and the passageway of POGO interface, for example switch over to the passageway of POGO interface from the passageway of TYPE C interface, thereby realize data channel's switching. The interface circuit system further comprises a conventional power supply path change-over switch (OVP), and the cost can be controlled by only using the conventional OVP when the POGO function is not used, namely when the POGO function is compatible and not supported, the conventional OVP is selected, and the optimal cost is realized.
The TYPE C interface can be connected with a 5V or 9V charger, a computer, a USB flash disk, a mouse and a keyboard; the POGO interface can be connected with a 5V charger, a computer, a U disk, a mouse and a keyboard.
In an embodiment of the present application, the interface circuit system includes a current detection module 6 connected to the charging micro-control interface 5 of the microcomputer. The voltage switching module 1 comprises a boosting unit 13, and an output end of the boosting unit 13 is connected with an input end of the second channel switch control unit 12 and the POGO interface 4; the input end of the boosting unit 13 is connected with the current detection module 6. Here, the current detection module 6 is connected to a charging IC of the microcomputer, and is configured to detect a current of the charging IC and input the detected current to the voltage boost unit 13, and the voltage boost unit 13(Q3) supplies power to an OTG device external to the POGO interface when used for an OTG function of the POGO interface, where the OTG device is connected between various devices or mobile devices to perform data exchange, and the OTG device is, for example, a usb disk, a mouse, a keyboard, and the like.
In an embodiment of the present application, the interface circuit system includes an interface current detection module 7, and the Type-C interface 3 includes a first peripheral interface 31 and a second peripheral interface 32; the interface current detection module 7 is connected to the first peripheral interface 31 and the second peripheral interface 32, and is configured to identify the types of the peripheral connection devices of the first peripheral interface 31 and the second peripheral interface 32 according to the detected current, so that the USB switching module 2 completes channel switching of the interfaces. Here, the first peripheral interface (CC1) and the second peripheral interface (CC2) have different voltages, and the interface current detection module 7 completes the identification of the device on the interface through checking the CC1 and the CC2, so that it is determined that the microcomputer CPU sends high and low levels through the identification of the device, to control the USB switching module 2 to switch channels according to the sent high and low levels.
In an embodiment of the present application, the POGO interface 4 includes a USB identification unit 41, configured to identify a device type connected to the POGO interface 4. Here, there is a USB identification unit (USB ID) on the POGO interface, which can be used to identify OTG devices (such as a mouse, a USB disk, a keyboard, etc.).
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.
Claims (6)
1. An interface circuit system for microcomputer control comprises a voltage switching module and a USB switching module,
the voltage switching module comprises a first channel switch control unit and a second channel switch control unit, and the second channel switch control unit controls the enabling of the first channel switch control unit;
the input end of the first channel switch control unit is connected with a Type C interface of the microcomputer, the input end of the second channel switch control unit is connected with a POGO interface of the microcomputer, and the output ends of the first channel switch control unit and the second channel switch control unit are commonly connected to a charging micro-control interface of the microcomputer;
the output end of the USB switching module is connected with the Type C interface or the POGO interface and is used for switching the channel of the Type C interface and the channel of the POGO interface according to the output level of the microcomputer.
2. The interface circuitry of claim 1, wherein said interface circuitry includes a current sensing module connected to a charging micro-control interface of said microcomputer.
3. The interface circuitry of claim 2, wherein said voltage switching module comprises a boost unit,
the output end of the boosting unit is connected with the input end of the second channel switch control unit and the POGO interface;
and the input end of the boosting unit is connected with the current detection module.
4. The interface circuitry of claim 1, wherein the interface circuitry comprises an interface current detection module, and wherein the Type C interface comprises a first peripheral interface and a second peripheral interface;
the interface current detection module is respectively connected with the first external interface and the second external interface and used for identifying the types of the external connection equipment of the first external interface and the second external interface according to the detected current.
5. The interface circuitry of claim 1, wherein said POGO interface comprises a USB identity recognition unit for recognizing the type of device connected to said POGO interface.
6. The interface circuitry of claim 1, wherein the second channel switch control unit comprises a preset state control port, wherein the first channel switch control unit comprises an enable port, and wherein the preset state control port is coupled to the enable port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921386595.3U CN210109804U (en) | 2019-08-23 | 2019-08-23 | Interface circuit system for microcomputer control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921386595.3U CN210109804U (en) | 2019-08-23 | 2019-08-23 | Interface circuit system for microcomputer control |
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| Publication Number | Publication Date |
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| CN210109804U true CN210109804U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921386595.3U Active CN210109804U (en) | 2019-08-23 | 2019-08-23 | Interface circuit system for microcomputer control |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111552655A (en) * | 2020-04-28 | 2020-08-18 | 上海龙旗科技股份有限公司 | Method and equipment compatible with PogoPin, Y-cable and USB |
| CN115223310A (en) * | 2022-06-30 | 2022-10-21 | 无锡睿勤科技有限公司 | OTG priority selection circuit and multichannel charging circuit |
-
2019
- 2019-08-23 CN CN201921386595.3U patent/CN210109804U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111552655A (en) * | 2020-04-28 | 2020-08-18 | 上海龙旗科技股份有限公司 | Method and equipment compatible with PogoPin, Y-cable and USB |
| CN115223310A (en) * | 2022-06-30 | 2022-10-21 | 无锡睿勤科技有限公司 | OTG priority selection circuit and multichannel charging circuit |
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