Test circuit for Type-C docking station

Abstract

The utility model provides a test circuit used for a Type-C docking station, comprising an input end of an HDMI interface test circuit, an input end of a PD charging interface test circuit, an input end of an RJ45 network interface test circuit, an input end of a USB3.0 interface test circuit, and an input end of an audio interface test circuit which can be connected with the Type-C docking station. The output end of the HDMI interface test circuit, the output end of the PD charging interface test circuit, the output end of the RJ45 network interface test circuit, the output end of the USB3.0 interface test circuit and the output end of the audio interface test circuit are connected with the input end of the Type-C docking station test main control circuit. The output end of the Type-C docking station test main control circuit is connected with a display screen through a test result display circuit. The Type-C docking station testing device has the advantages that the Type-C docking station can be tested in a semi-automatic mode, and testing efficiency and quality stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, and in particular to a test circuit for a Type-C expansion dock. Background Art

[0002] A docking station, also known as a port replicator, is an external device designed specifically for electronic devices. By duplicating or even expanding the ports of electronic devices, electronic devices can be conveniently connected to multiple accessories or external devices (such as power adapters, network cables, mice, external keyboards, printers, and external displays) in one stop. The functions of a docking station include connecting to an external display, expanding USB ports, wired network connections, expanding audio ports, charging functions, data transmission and storage, etc. The Type-C docking station is a multi-functional device that can expand a single Type-C interface into multiple other interfaces to meet the needs of users in different scenarios. The Type-C docking station provides convenience for users, allowing them to enjoy the convenience of multi-interface expansion in different devices and scenarios.

[0003] With the widespread use of Type-C interfaces in smart electronic devices such as computers and mobile phones, Type-C expansion docks have greatly met users' needs for multiple interfaces, such as HDMI video output interface, RJ45 network interface, PD charging interface, USB expansion interface and audio interface.

[0004] During the production process of the Type-C docking station, each interface of the Type-C docking station must be tested. At present, the existing testing methods are based on the methods provided by the upstream, and each interface of the Type-C docking station is tested separately. Each interface needs to be manually tested in different positions, which requires the participation of multiple people. The labor cost of testing is high, the testing efficiency is low, resulting in low production efficiency, and manual testing is prone to errors, resulting in unstable product quality. Utility Model Content

[0005] In order to solve the problems in the prior art, the utility model provides a test circuit for a Type-C expansion dock. By arranging an HDMI interface test circuit, a PD charging interface test circuit, an RJ45 network interface test circuit, a USB3.0 interface test circuit, an audio interface test circuit, a Type-C expansion dock test main control circuit and a test result display circuit that cooperate with each other in the test circuit for the Type-C expansion dock, it is possible to achieve a one-time semi-automatic test of the HDMI interface, PD charging interface, RJ45 network interface, USB3.0 interface and audio interface of the Type-C expansion dock, and display the test results on an LCD display screen. The operation is simple, the product testing efficiency is improved, the quality stability of the product is improved, and the problem that the various interfaces of the Type-C expansion dock in the prior art need to be manually tested by different positions, resulting in high testing labor costs, low production efficiency and unstable product quality is solved.

[0006] The utility model provides a test circuit for a Type-C expansion dock, comprising an HDMI interface test circuit, a PD charging interface test circuit, an RJ45 network interface test circuit, a USB3.0 interface test circuit, an audio interface test circuit, a Type-C expansion dock test main control circuit and a test result display circuit, wherein the input end of the HDMI interface test circuit can be connected to the HDMI interface of the Type-C expansion dock, the input end of the PD charging interface test circuit can be connected to the PD charging interface of the Type-C expansion dock, the input end of the RJ45 network interface test circuit can be connected to the RJ45 network interface of the Type-C expansion dock, the input end of the USB3.0 interface test circuit can be connected to the USB3.0 interface of the Type-C expansion dock, and the input end of the audio interface test circuit can be connected to the Type -The audio interface of the Type-C expansion dock, the output end of the HDMI interface test circuit, the output end of the PD charging interface test circuit, the output end of the RJ45 network interface test circuit, the output end of the USB3.0 interface test circuit, and the output end of the audio interface test circuit are connected to the input end of the Type-C expansion dock test main control circuit, the output end of the Type-C expansion dock test main control circuit is connected to the input end of the test result display circuit, the output end of the test result display circuit is connected to a display screen, and the Type-C expansion dock test main control circuit can control the HDMI interface test circuit, the PD charging interface test circuit, the RJ45 network interface test circuit, the USB3.0 interface test circuit, and the audio interface test circuit to complete the test of the Type-C expansion dock and display the result on the display screen.

[0007] The utility model is further improved. A main control chip U5 is provided in the main control circuit of the Type-C expansion dock test. The main control chip U5 is provided with 48 pins. The 45th and 46th pins of the main control chip U5 are connected to the output end of the HDMI interface test circuit, the output end of the PD charging interface test circuit, the output end of the USB3.0 interface test circuit, and the output end of the audio interface test circuit. The 31st and 30th pins of the main control chip U5 are connected to the output end of the RJ45 network interface test circuit. The 25th, 26th, 27th, 28th, and 29th pins of the main control chip U5 are connected to the input end of the test result display circuit.

[0008] The utility model is further improved. An HDMI interface test chip U15 is provided in the HDMI interface test circuit. The HDMI interface test chip U15 is provided with 76 pins. The 52nd and 53rd pins of the HDMI interface test chip U15 are respectively connected to the 46th and 45th pins of the main control chip U5. The 63rd, 64th, 66th, 67th, 68th and 69th pins of the HDMI interface test chip U15 can be connected to the HDMI interface of the Type-C expansion dock.

[0009] The utility model is further improved. A PD charging interface test chip U11 is provided in the PD charging interface test circuit. The PD charging interface test chip U11 is provided with 48 pins. The 34th and 33rd pins of the PD charging interface test chip U11 are respectively connected to the 46th and 45th pins of the main control chip U5. The 35th, 36th, 38th and 39th pins of the PD charging interface test chip U11 can be connected to the PD charging interface of the Type-C expansion dock.

[0010] The utility model is further improved. A network test interface J8 is provided in the RJ45 network interface test circuit. The output end of the network test interface J8 is provided with 4 pins. The 3rd and 4th pins of the network test interface J8 are respectively connected to the 31st and 30th pins of the main control chip U5. The input end of the network test interface J8 can be connected to the RJ45 network interface of the Type-C expansion dock.

[0011] The utility model is further improved. A USB3.0 interface test chip U3 is provided in the USB3.0 interface test circuit. The USB3.0 interface test chip U3 is provided with 64 pins. The 32nd and 23rd pins of the USB3.0 interface test chip U3 are respectively connected to the 46th and 45th pins of the main control chip U5. The 38th, 39th, 41st and 42nd pins of the USB3.0 interface test chip U3 can be connected to the USB3.0 interface of the Type-C expansion dock.

[0012] The utility model is further improved. An audio interface test chip U12 is provided in the audio interface test circuit. The audio interface test chip U12 is provided with 41 pins. The 36th and 35th pins of the audio interface test chip U12 are respectively connected to the 46th and 45th pins of the main control chip U5. The 4th and 6th pins of the audio interface test chip U12 can be connected to the audio interface of the Type-C expansion dock.

[0013] The utility model is further improved in that a display interface J2 is provided in the test result display circuit, and the input end of the display interface J2 is provided with 10 pins, the 2nd, 3rd, 4th, 5th and 6th pins of the display interface J2 are respectively connected to the 25th, 26th, 27th, 28th and 29th pins of the main control chip U5, and the output end of the display interface J2 is connected to a display screen.

[0014] The utility model is further improved, the model of the HDMI interface test chip U15 is GSV2001, the model of the PD charging interface test chip U11 is GSV2201S, the model of the network test interface J8 is WIZ750SR, the model of the USB3.0 interface test chip U3 is BGS3510, and the model of the audio interface test chip U12 is QFN40_CM9600.

[0015] The utility model is further improved, and the model of the main control chip U5 is STM32F030C8T6.

[0016] Compared with the prior art, the utility model has the following beneficial effects: a test circuit for a Type-C docking station is provided, by setting a HDMI interface test circuit, a PD charging interface test circuit, an RJ45 network interface test circuit, a USB3.0 interface test circuit, an audio interface test circuit, a Type-C docking station test main control circuit and a test result display circuit that cooperate with each other in the test circuit for the Type-C docking station, the Type-C docking station test main control circuit can control the HDMI interface test circuit, the PD charging interface test circuit, the RJ45 network interface test circuit, the USB3.0 interface test circuit, the audio interface test circuit, the Type-C docking station test main control circuit to test the Ty The pe-C docking station completes the test and displays the results on the display screen. It can realize a one-time semi-automatic test of the HDMI interface, PD charging interface, RJ45 network interface, USB3.0 interface and audio interface of the Type-C docking station, and display the test results on the LCD display screen. It is easy to operate and does not require multiple manual testing positions, which greatly reduces the test labor cost and improves product testing efficiency. Moreover, compared with multiple manual tests, semi-automatic tests are less prone to errors, which improves the quality stability of the product and solves the problem in the prior art that each interface of the Type-C docking station requires manual testing at different positions, resulting in high test labor costs, low production efficiency and unstable product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a principle block diagram of a test circuit for a Type-C docking station of the utility model;

[0019] Figure 2 A circuit diagram for testing the main control circuit of the Type-C docking station of the present utility model;

[0020] Figure 3 A circuit diagram of an HDMI interface test circuit of the present utility model;

[0021] Figure 4 This is a circuit diagram of the PD charging interface test circuit of the utility model;

[0022] Figure 5 A circuit diagram of an RJ45 network interface test circuit of the utility model;

[0023] Figure 6A circuit diagram of a USB 3.0 interface test circuit of the utility model;

[0024] Figure 7 A circuit diagram of an audio interface test circuit of the utility model;

[0025] Figure 8 The circuit diagram is a test result display circuit of the utility model. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present utility model; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] like Figure 1-8As shown, the utility model provides a test circuit for a Type-C docking station, including an HDMI interface test circuit, a PD charging interface test circuit, an RJ45 network interface test circuit, a USB3.0 interface test circuit, an audio interface test circuit, a Type-C docking station test main control circuit and a test result display circuit. The input end of the HDMI interface test circuit can be connected to the HDMI interface of the Type-C docking station, the input end of the PD charging interface test circuit can be connected to the PD charging interface of the Type-C docking station, and the input end of the RJ45 network interface test circuit can be connected to the RJ45 network interface of the Type-C docking station. The input end of the USB3.0 interface test circuit can be connected to the USB3.0 interface of the Type-C expansion dock, the input end of the audio interface test circuit can be connected to the audio interface of the Type-C expansion dock, the output end of the HDMI interface test circuit, the output end of the PD charging interface test circuit, the output end of the RJ45 network interface test circuit, the output end of the USB3.0 interface test circuit, and the output end of the audio interface test circuit are connected to the input end of the Type-C expansion dock test main control circuit, the output end of the Type-C expansion dock test main control circuit is connected to the input end of the test result display circuit, and the output end of the test result display circuit is connected to a display screen. In this embodiment, the Type-C docking station test main control circuit can control the HDMI interface test circuit, the PD charging interface test circuit, the RJ45 network interface test circuit, the USB3.0 interface test circuit, and the audio interface test circuit to complete the test of the Type-C docking station and display the results on the display screen, which can realize a one-time semi-automatic test of the HDMI interface, PD charging interface, RJ45 network interface, USB3.0 interface and audio interface of the Type-C docking station, and display the test results on the LCD display screen. The operation is simple, and there is no need for multiple manual testing posts, which greatly reduces the test manpower cost and improves the product testing efficiency. Moreover, compared with multiple manual tests, semi-automatic tests are less prone to errors, which improves the quality stability of the product. Among them, the RJ45 interface can be used to connect the RJ-45 connector, which is suitable for networks constructed by twisted pair cables. This port is the most common. Generally speaking, Ethernet hubs will provide this port. The number of hubs we usually talk about refers to the number of RJ-45 ports.HDMI refers to High Definition Multimedia Interface (HDMI), which is a digital video / audio interface technology and a dedicated digital interface suitable for image transmission. It can transmit audio and image signals at the same time, with a maximum data transmission speed of 2.25GB / s. At the same time, there is no need for digital / analog or analog / digital conversion before signal transmission. HDMI can be used with broadband digital content protection (HDCP) to prevent unauthorized copying of copyrighted audio and video content. The extra space of HDMI can be applied to audio and video formats that will be upgraded in the future. Because a 1080p video and an 8-channel audio signal require less than 0.5GB / s, HDMI still has a large margin, which allows it to use one cable to connect DVD players, receivers and PRRs respectively.

[0030] like Figure 2 As shown, the Type-C docking station test main control circuit is provided with a main control chip U5, the model of the main control chip U5 is STM32F030C8T6, and the main control chip U5 is provided with 48 pins. The 45th and 46th pins of the main control chip U5 are connected to the output end of the HDMI interface test circuit, the output end of the PD charging interface test circuit, the output end of the USB3.0 interface test circuit, and the output end of the audio interface test circuit. The 31st and 30th pins of the main control chip U5 are connected to the output end of the RJ45 network interface test circuit, and the 25th, 26th, 27th, 28th, and 29th pins of the main control chip U5 are connected to the input end of the test result display circuit. In this embodiment, the Type-C docking station test main control circuit is used to control the HDMI interface test circuit, the PD charging interface test circuit, the RJ45 network interface test circuit, the USB3.0 interface test circuit, and the audio interface test circuit to complete the test of the Type-C docking station and display the results on the display screen.

[0031] like Figure 3 As shown, the HDMI interface test circuit is provided with an HDMI interface test chip U15, the model of the HDMI interface test chip U15 is GSV2001, and the HDMI interface test chip U15 is provided with 76 pins, the 52nd and 53rd pins of the HDMI interface test chip U15 are respectively connected to the 46th and 45th pins of the main control chip U5, and the 63rd, 64th, 66th, 67th, 68th, and 69th pins of the HDMI interface test chip U15 can be connected to the HDMI interface of the Type-C expansion dock. In this embodiment, the HDMI interface test circuit is used to test the HDMI interface of the Type-C expansion dock.

[0032] like Figure 4As shown, the PD charging interface test circuit is provided with a PD charging interface test chip U11, the model of the PD charging interface test chip U11 is GSV2201S, and the PD charging interface test chip U11 is provided with 48 pins. The 34th and 33rd pins of the PD charging interface test chip U11 are respectively connected to the 46th and 45th pins of the main control chip U5, and the 35th, 36th, 38th, and 39th pins of the PD charging interface test chip U11 can be connected to the PD charging interface of the Type-C docking station. In this embodiment, the PD charging interface test circuit is used to test the PD charging interface of the Type-C docking station.

[0033] like Figure 5 As shown, the RJ45 network interface test circuit is provided with a network test interface J8, the model of the network test interface J8 is WIZ750SR, the output end of the network test interface J8 is provided with 4 pins, the 3rd and 4th pins of the network test interface J8 are respectively connected to the 31st and 30th pins of the main control chip U5, and the input end of the network test interface J8 can be connected to the RJ45 network interface of the Type-C expansion dock. In this embodiment, the RJ45 network interface test circuit is used to test the RJ45 network interface of the Type-C expansion dock.

[0034] like Figure 6 As shown, a USB3.0 interface test chip U3 is provided in the USB3.0 interface test circuit, the model of the USB3.0 interface test chip U3 is BGS3510, and the USB3.0 interface test chip U3 is provided with 64 pins. The 32nd and 23rd pins of the USB3.0 interface test chip U3 are respectively connected to the 46th and 45th pins of the main control chip U5, and the 38th, 39th, 41st, and 42nd pins of the USB3.0 interface test chip U3 can be connected to the USB3.0 interface of the Type-C docking station. In this embodiment, the USB3.0 interface test circuit is used to test the USB3.0 interface of the Type-C docking station.

[0035] like Figure 7 As shown, an audio interface test chip U12 is provided in the audio interface test circuit, and the audio interface test chip U12 has 41 pins. The model of the audio interface test chip U12 is QFN40_CM9600. The 36th and 35th pins of the audio interface test chip U12 are respectively connected to the 46th and 45th pins of the main control chip U5, and the 4th and 6th pins of the audio interface test chip U12 can be connected to the audio interface of the Type-C docking station. In this embodiment, the audio interface test circuit is used to test the audio interface of the Type-C docking station.

[0036] like Figure 8As shown, the test result display circuit is provided with a display interface J2, the input end of the display interface J2 is provided with 10 pins, the 2nd, 3rd, 4th, 5th, and 6th pins of the display interface J2 are respectively connected to the 25th, 26th, 27th, 28th, and 29th pins of the main control chip U5, and the output end of the display interface J2 is connected to a display screen. In this embodiment, the test result display circuit is used to display the final test results of the HDMI interface, PD charging interface, RJ45 network interface, USB3.0 interface, and audio interface of the Type-C docking station.

[0037] As can be seen from the above, the utility model provides a test circuit for a Type-C expansion dock. By setting a mutually coordinated HDMI interface test circuit, a PD charging interface test circuit, an RJ45 network interface test circuit, a USB3.0 interface test circuit, an audio interface test circuit, a Type-C expansion dock test main control circuit and a test result display circuit in the test circuit for the Type-C expansion dock, the Type-C expansion dock test main control circuit can control the HDMI interface test circuit, the PD charging interface test circuit, the RJ45 network interface test circuit, the USB3.0 interface test circuit, and the audio interface test circuit to test the Type-C expansion dock. The dock completes the test and displays the results on the display screen. It can realize one-time semi-automatic testing of the HDMI interface, PD charging interface, RJ45 network interface, USB3.0 interface and audio interface of the Type-C dock, and display the test results on the LCD display screen. It is simple to operate and does not require multiple manual testing positions, which greatly reduces the labor cost of testing and improves product testing efficiency. Moreover, compared with multiple manual tests, semi-automatic tests are less prone to errors, which improves the quality stability of the product and solves the problem in the prior art that each interface of the Type-C dock requires manual testing at different positions, resulting in high labor cost of testing, low production efficiency and unstable product quality.

[0038] The specific implementation methods described above are preferred implementation methods of the present utility model, and are not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A test circuit for a Type-C docking station, characterized in that: The invention comprises an HDMI interface test circuit, a PD charging interface test circuit, an RJ45 network interface test circuit, a USB3.0 interface test circuit, an audio interface test circuit, a Type-C expansion dock test main control circuit and a test result display circuit, wherein the input end of the HDMI interface test circuit can be connected to the HDMI interface of the Type-C expansion dock, the input end of the PD charging interface test circuit can be connected to the PD charging interface of the Type-C expansion dock, the input end of the RJ45 network interface test circuit can be connected to the RJ45 network interface of the Type-C expansion dock, the input end of the USB3.0 interface test circuit can be connected to the USB3.0 interface of the Type-C expansion dock, the input end of the audio interface test circuit can be connected to the audio interface of the Type-C expansion dock, and the H The output end of the DMI interface test circuit, the output end of the PD charging interface test circuit, the output end of the RJ45 network interface test circuit, the output end of the USB3.0 interface test circuit, and the output end of the audio interface test circuit are connected to the input end of the Type-C expansion dock test main control circuit, and the output end of the Type-C expansion dock test main control circuit is connected to the input end of the test result display circuit. The output end of the test result display circuit is connected to a display screen. The Type-C expansion dock test main control circuit can control the HDMI interface test circuit, the PD charging interface test circuit, the RJ45 network interface test circuit, the USB3.0 interface test circuit, and the audio interface test circuit to complete the test of the Type-C expansion dock and display the results on the display screen.

2. The test circuit for the Type-C docking station according to claim 1, characterized in that: A main control chip U5 is provided in the Type-C expansion dock test main control circuit, and the main control chip U5 is provided with 48 pins. The 45th and 46th pins of the main control chip U5 are connected to the output end of the HDMI interface test circuit, the output end of the PD charging interface test circuit, the output end of the USB3.0 interface test circuit, and the output end of the audio interface test circuit. The 31st and 30th pins of the main control chip U5 are connected to the output end of the RJ45 network interface test circuit, and the 25th, 26th, 27th, 28th, and 29th pins of the main control chip U5 are connected to the input end of the test result display circuit.

3. The test circuit for the Type-C docking station according to claim 2, characterized in that: An HDMI interface test chip U15 is provided in the HDMI interface test circuit. The HDMI interface test chip U15 is provided with 76 pins. The 52nd and 53rd pins of the HDMI interface test chip U15 are respectively connected to the 46th and 45th pins of the main control chip U5. The 63rd, 64th, 66th, 67th, 68th and 69th pins of the HDMI interface test chip U15 can be connected to the HDMI interface of the Type-C expansion dock.

4. The test circuit for the Type-C docking station according to claim 3, characterized in that: The PD charging interface test circuit is provided with a PD charging interface test chip U11, and the PD charging interface test chip U11 is provided with 48 pins. The 34th and 33rd pins of the PD charging interface test chip U11 are respectively connected to the 46th and 45th pins of the main control chip U5, and the 35th, 36th, 38th and 39th pins of the PD charging interface test chip U11 can be connected to the PD charging interface of the Type-C expansion dock.

5. The test circuit for the Type-C docking station according to claim 4, characterized in that: The RJ45 network interface test circuit is provided with a network test interface J8, and the output end of the network test interface J8 is provided with 4 pins. The 3rd and 4th pins of the network test interface J8 are respectively connected to the 31st and 30th pins of the main control chip U5, and the input end of the network test interface J8 can be connected to the RJ45 network interface of the Type-C expansion dock.

6. The test circuit for the Type-C docking station according to claim 5, characterized in that: The USB3.0 interface test circuit is provided with a USB3.0 interface test chip U3, and the USB3.0 interface test chip U3 is provided with 64 pins. The 32nd and 23rd pins of the USB3.0 interface test chip U3 are respectively connected to the 46th and 45th pins of the main control chip U5, and the 38th, 39th, 41st and 42nd pins of the USB3.0 interface test chip U3 can be connected to the USB3.0 interface of the Type-C expansion dock.

7. The test circuit for the Type-C docking station according to claim 6, characterized in that: An audio interface test chip U12 is provided in the audio interface test circuit. The audio interface test chip U12 has 41 pins. Pins 36 and 35 of the audio interface test chip U12 are respectively connected to pins 46 and 45 of the main control chip U5. Pins 4 and 6 of the audio interface test chip U12 can be connected to the audio interface of the Type-C expansion dock.

8. The test circuit for the Type-C docking station according to claim 7, characterized in that: The test result display circuit is provided with a display interface J2, the input end of the display interface J2 is provided with 10 pins, the 2nd, 3rd, 4th, 5th and 6th pins of the display interface J2 are respectively connected to the 25th, 26th, 27th, 28th and 29th pins of the main control chip U5, and the output end of the display interface J2 is connected to a display screen.

9. The test circuit for the Type-C docking station according to claim 8, characterized in that: The model of the HDMI interface test chip U15 is GSV2001, the model of the PD charging interface test chip U11 is GSV2201S, the model of the network test interface J8 is WIZ750SR, the model of the USB3.0 interface test chip U3 is BGS3510, and the model of the audio interface test chip U12 is QFN40_CM9600.

10. The test circuit for the Type-C docking station according to claim 9, characterized in that: The model of the main control chip U5 is STM32F030C8T6.

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