CN220773578U

CN220773578U - Testing device for universal serial bus interface

Info

Publication number: CN220773578U
Application number: CN202322546865.5U
Authority: CN
Inventors: 高鹏
Original assignee: Suzhou HYC Technology Co Ltd
Current assignee: Suzhou HYC Technology Co Ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-04-12
Anticipated expiration: 2033-09-19

Abstract

The application relates to a testing device of universal serial bus interface, including: the control module is configured with a plurality of receiving channels for receiving communication signals from the equipment to be tested and a plurality of transmitting channels for transmitting the communication signals, and is used for carrying out communication test on the equipment to be tested; the first interface module is configured with a plurality of first transmission ends, and each first transmission end supports a universal serial bus interface to be tested and is respectively connected to the control module in a conducting mode; the gating module is configured with a plurality of first ends and a plurality of second ends, the plurality of first ends are respectively and correspondingly connected with the plurality of first transmission ends, the plurality of second ends are respectively and correspondingly connected with the receiving channel and the sending channel of the control module, and the gating module is used for selectively conducting connection between the first transmission ends and the sending channel and/or the receiving channel of the control module. Therefore, the universal serial bus interface to be tested can receive and transmit various communication signals and test performance, and the compatibility and the degree of automation of the testing device are improved.

Description

Testing device for universal serial bus interface

Technical Field

The present disclosure relates to testing technology, and in particular, to a testing device for universal serial bus interfaces.

Background

Along with the promotion of USB Type-C standard interface and its own good performance and compatibility, more and more electronic devices uniformly adopt USB Type-C standard interface, and along with the development of consumer electronics, the requirements of the market on the quality and reliability of the product are also more and more strict, so that the function verification and performance test of the function of USB Type-C interface of the electronic product are required. However, in the testing process, the testing equipment with various different functions needs to be inserted into the USB Type-C interface to perform the function test, so that the existing testing equipment has single function, low reuse rate and poor compatibility, which results in complicated flow, long time consumption and low automation degree of the USB Type-C interface test.

Disclosure of Invention

Based on this, it is necessary to provide a test device for a USB interface according to the present utility model, which aims at the problems of single function, low reuse rate and poor compatibility of the test device in the prior art, resulting in complicated flow, long time consumption and low automation of the USB Type-C interface test.

In order to achieve the above object, the present application provides a test device for a universal serial bus interface, including:

the control module is configured with a plurality of receiving channels for receiving communication signals from equipment to be tested and a plurality of transmitting channels for transmitting the communication signals, and is used for carrying out communication test on the equipment to be tested according to the communication signals;

The first interface module is configured with a plurality of first transmission ends, each first transmission end supports a universal serial bus interface which is respectively connected to the control module and the equipment to be tested in a conducting mode, and the first transmission ends are used for transmitting the communication signals between the control module and the equipment to be tested;

the gating module is configured with a plurality of first ends and a plurality of second ends, the plurality of first ends are respectively and correspondingly connected with the plurality of first transmission ends, the plurality of second ends are respectively and correspondingly connected with the receiving channel and the sending channel of the control module, and the gating module is used for selectively conducting connection between the first transmission ends and the sending channel and/or the receiving channel of the control module.

In one embodiment, the plurality of first transmission ends include a plurality of groups of high-speed differential signal transmission ends and a plurality of groups of high-speed differential signal reception ends; the gating module includes:

the first gating unit is configured with a plurality of groups of first channels, a plurality of groups of second channels and a plurality of groups of third channels, the plurality of groups of first channels are correspondingly connected with the plurality of groups of high-speed differential signal transmitting ends respectively, the plurality of groups of second channels are correspondingly connected with the plurality of transmitting channels of the control module respectively, and the plurality of groups of third channels are correspondingly connected with the plurality of receiving channels of the control module respectively;

The second gating unit is configured with a plurality of groups of fourth channels, a plurality of groups of fifth channels and a plurality of groups of sixth channels, the plurality of groups of fourth channels are respectively and correspondingly connected with the plurality of groups of high-speed differential signal receiving ends, the plurality of groups of fifth channels are respectively and correspondingly connected with the plurality of receiving channels of the control module, and the plurality of groups of sixth channels are respectively and correspondingly connected with the plurality of transmitting channels of the control module;

the control module is used for sending a first switching signal to the first gating unit so that the first gating unit selectively communicates the first channel to the second channel or the third channel; and the second switching unit is further used for sending a second switching signal to the second gating unit so that the second gating unit selectively communicates the fourth channel to the fifth channel or the sixth channel.

In one embodiment, the plurality of first transmission terminals further includes a low-speed differential signal transceiver terminal; the test device further includes:

the low-speed signal receiving and transmitting module is connected with the control module and is used for receiving and transmitting USB2.0 signals;

the audio processing module is connected with the control module and used for transmitting digital audio signals between the control module and the low-speed differential signal receiving and transmitting end;

The first end of the first signal switching module is connected with the low-speed differential signal receiving and transmitting end, and the two second ends of the first signal switching module are respectively connected with the low-speed signal receiving and transmitting module and the audio processing module;

the control module is used for selectively conducting connection between the first end and any second end of the first signal switching module so that the low-speed differential signal receiving and transmitting end can transmit the USB2.0 signal or the digital audio signal; the control module is also used for carrying out USB2.0 function test on the equipment to be tested based on the USB2.0 signal and carrying out audio function test on the equipment to be tested based on the digital audio signal.

In one embodiment, the plurality of first transmission terminals further includes an auxiliary transmission terminal, and the audio processing module is further configured to transfer an analog audio signal between the control module and the auxiliary transmission terminal; the test device further includes:

the first end of the second signal switching module is connected with the auxiliary transmission end, and the two second ends of the second signal switching module are respectively connected with the audio processing module and the control module;

The control module is used for transmitting an auxiliary signal to the second signal switching module under the condition of transmitting a DP signal, and is also used for selectively conducting the connection between the first end and any second end of the second signal switching module so that the auxiliary transmission end transmits the analog audio signal or the auxiliary signal; the control module is also used for carrying out audio function test on the equipment to be tested based on the analog audio signal.

In one embodiment, the audio processing module comprises:

the audio encoding and decoding unit is connected with the control module and is used for carrying out audio encoding on a first audio signal transmitted by the equipment to be tested so as to be transmitted to the control module and carrying out audio decoding on a second audio signal transmitted by the control module so as to be transmitted to the equipment to be tested;

the digital switch unit is respectively connected with the audio encoding and decoding unit and the first signal switching module and is used for transmitting the digital audio signals between the audio encoding and decoding unit and the first signal switching module;

the analog switch unit is respectively connected with the audio encoding and decoding unit and the second signal switching module and is used for transmitting the analog audio signals between the audio encoding and decoding unit and the second signal switching module.

In one embodiment, the plurality of first transmission terminals further includes a first configuration terminal and a first power terminal, and the testing device further includes:

the port control module is respectively connected with the first configuration end and the control module and is used for determining the equipment type of the equipment to be tested and the inserting direction of the universal serial bus interface according to the voltage signal of the first configuration end;

and the power transmission module is respectively connected with the first power supply end and the port control module and is used for detecting the charge and discharge functions of the universal serial bus interface of the equipment to be tested.

In one embodiment, the number of the first interface modules is plural, and the circuit connection structure between each first interface module and the control module is the same.

In one embodiment, the method further comprises:

a second interface module configured with a second transmission end for transmitting Thunderbolt signals between the control module and the slave device to be tested;

a third interface module configured with a third transmission end for transmitting Thunderbolt signals between the control module and the main device to be tested;

and the Thunderbolt controller is respectively connected with the control module, the second transmission end and the third transmission end and is used for carrying out receiving and transmitting processing on the Thunderbolt signals transmitted by the second transmission end and the third transmission end.

In one embodiment, the second transmission terminal includes a second configuration terminal and a second power terminal, and the third transmission terminal includes a third configuration terminal and a third power terminal; the number of the port control modules is multiple, and one port control module is respectively connected with the control module, the second configuration end and the third configuration end;

the number of the charging units is multiple, a part of the charging units are respectively connected with the second power supply end and the port control module, a protection module and a second measurement module are sequentially arranged between the part of the charging units and the second power supply end, another part of the charging units are respectively connected with the third power supply end and the port control module, and a protection module and a second measurement module are sequentially arranged between the other part of the charging units and the third power supply end.

In one embodiment, the control module includes:

a transceiver unit configured with the receiving channel and the transmitting channel, for supporting the transceiver of the communication signal;

a logic unit for providing a communication protocol of a plurality of said communication signals;

a link analysis unit for evaluating and eye-diagram testing link quality of a plurality of the communication signals;

And the peripheral management unit is used for configuring the test parameters of the test device and feeding back the test data to the upper computer.

The test device of the universal serial bus interface is characterized in that a plurality of receiving channels for receiving communication signals and a plurality of transmitting channels for transmitting the communication signals are configured to the control module, the test device is connected with the universal serial bus interface of the equipment to be tested through the first interface module, a plurality of first transmission ends for transmitting the communication signals are configured to the first interface module, the gating module selectively conducts connection between the first ends and the second ends according to switching signals transmitted by the control module, the first transmission ends of the first interface module can be connected to the transmitting channels of the control module so that the test device transmits various communication signals to the equipment to be tested, the first transmission ends of the first interface module can also be connected to the receiving channels of the control module so that the test device receives various communication signals output by the equipment to be tested, so that the equipment to be tested can perform transceiving test of various communication signals, and meanwhile, the first transmission ends of the first interface module can also be connected to the receiving channels and the transmitting channels of the control module so that the test device supports the transceiving test of the universal serial bus interface signals transmitted by the equipment to be tested. Based on the above, the connection between the first transmission end of the first interface module and the transmitting channel and/or the receiving channel of the control module is selectively conducted by the gating module, so that the universal serial bus interface of the equipment to be tested can be subjected to the receiving and transmitting test and the performance test of various communication signals, the test of various communication signals output by the universal serial bus interface by using different types of test devices is avoided, the compatibility and the automation degree of the test devices can be effectively improved, the test flow is simplified, and the test duration is reduced.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a testing apparatus of a USB interface according to an embodiment;

FIG. 2 is a signal definition diagram of an USB Type-C standard interface provided in one embodiment;

FIG. 3 is a schematic diagram of a first strobe unit according to an embodiment;

FIG. 4 is a schematic diagram of a second gating unit according to an embodiment;

FIG. 5 is a second schematic diagram of a testing apparatus of a USB interface according to an embodiment;

FIG. 6 is a third schematic diagram of a USB interface testing apparatus according to an embodiment.

Reference numerals illustrate:

and the control module is used for: 100; a receiving and transmitting unit: 110; logic unit: 120; link analysis unit: 130; peripheral management unit: 140; a first interface module: 200; and a gating module: 300; a first gating unit: 310; and a second gating unit: 320. Low-speed signal receiving and transmitting module: 400; first USB physical layer unit: 410; second USB physical layer unit: 420; a transmitting-receiving switching unit: 430; an audio processing module: 500; audio codec unit: 510; digital switching unit: 520; analog switching unit: 530; a first signal switching module: 600; and a second signal switching module: 700; and the port control module is used for: 800; and a power transmission module: 900; an electronic load unit: 910; a charging unit: 920; and a second interface module: 1001; and a third interface module: 1002; thunderbolt controller: 1003; and a power supply module: 1004.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, in this specification, the term "and/or" includes any and all combinations of the associated listed items.

In one embodiment, referring to fig. 1, a test apparatus for a universal serial bus interface is provided, including: the control module 100, the first interface module 200 and the gating module 300, the control module 100 is configured with a plurality of receiving channels for receiving communication signals from the device to be tested, and a plurality of transmitting channels for transmitting the communication signals, and the control module 100 is configured to perform communication test on the device to be tested according to the communication signals. The first interface module 200 is configured with a plurality of first transmission terminals, each of which supports a usb interface that is respectively connected to the control module 100 and the device to be tested in a conductive manner, and the first transmission terminals are used for transmitting communication signals between the control module 100 and the device to be tested. The gating module 300 is configured with a plurality of first ends and a plurality of second ends, the plurality of first ends are respectively connected with the plurality of first transmission ends correspondingly, the plurality of second ends are respectively connected with the receiving channel and the sending channel of the control module 100 correspondingly, and the gating module 300 is used for selectively conducting the connection between the first transmission ends and the sending channel and/or the receiving channel of the control module 100.

The USB interface can be an USB Type-C interface, the USB Type-C interface is a specification of a USB connector system, can bear higher power and support higher data throughput, supports forward and reverse insertion, has blind insertion and nondirectionality, and is widely applied to various electronic devices. Specifically, referring to the pin signal definition schematic diagram of the USB Type-C interface provided in fig. 2, the USB Type-C interface may be divided into a female (accept) and a male (Plug), which are provided with 24 pins, and the pins are distributed in a central symmetry manner in terms of functions, and can identify the Plug operation under the conditions of forward Plug and reverse Plug to complete the realization of the functions. The two sides are respectively provided with 12 pins, 6 of the pins are positive pins, 6 of the pins are negative pins, two sides comprise high-speed differential signal pin pairs (RX 1+/RX1-, RX2+/RX2-, TX1+/TX1-, TX2+/TX 2-), a ground pin (GND) and a power supply pin (VBUS), auxiliary communication pins (SBU 1/SBU 2), low-speed differential signal pin pairs (D+/D-), and configuration pins (CC 1/CC 2), wherein the TX/RX high-speed differential signal pin pairs are used for transmitting data, the transmission rate can reach 10Gbps, the USB3/USB4 signals and DP (Display Port) signals can be transmitted and received, the VBUS pins are used for outwards supplying power and carrying out power transmission, the SBU1/SBU2 pins are used for transmitting auxiliary signals in some special modes, the D+/D-low-speed differential signal pin pairs are used for transmitting USB2.0 signals, the CC1/CC2 pins are used for identifying and configuring information so as to confirm the transmission direction and positive and negative plug confirmation, and the VCONN pins can be multiplexed at the same time.

Further, by setting the first interface module 200 to connect with the USB Type-C interface of the device to be tested, the first interface module 200 may be a USB Type-C header (accept), which may be connected to the USB Type-C interface of the device to be tested through a Type-C data line. The first interface module 200 is configured with a plurality of first transmission terminals, which may include the high-speed differential signal pin pairs (RX 1+/RX1-, RX2+/RX2-, TX1+/TX1-, TX2+/TX 2-) described above to support transmission of communication signals between the control module 100 and the USB Type-C interface of the device to be tested.

Further, the first ends of the gating module 300 are correspondingly connected to the first transmission ends of the first interface module 200, that is, the first ends may be correspondingly connected to a plurality of high-speed differential signal pin pairs (RX 1+/RX1-, RX2+/RX2-, TX1+/TX1-, TX2+/TX 2-) and the second ends of the gating module 300 are correspondingly connected to a plurality of receiving channels and a plurality of transmitting channels of the control module 100, wherein the receiving channels are used for realizing data receiving of the communication signals, and the transmitting channels are used for realizing data transmitting of the communication signals.

Under the condition that the communication signal transmitted between the testing device and the USB Type-C interface to be tested is a USB3.0 signal, the gating module 300 selects one first end to connect with one TX pin pair in the first transmission end, selects another first end to connect with one RX pin pair in the first transmission end, and simultaneously selects one second end to connect with a transmitting channel of the control module 100, selects another second end to connect with a receiving channel of the control module 100, so that the gating module 300 can conduct the second end connected with the transmitting channel to the first end connected with the TX pin pair, and conduct the second end connected with the receiving channel to the first end connected with the RX pin pair, and the control module 100 further performs USB3.0 function test on the USB Type-C interface according to the built USB3.0 communication protocol logic. It should be noted that, for other versions of the USB signal, the above procedure may also be implemented.

In the case that the transmitted communication signal is a DP signal, for example, the testing device needs to send the DP signal to the USB Type-C interface to be tested, the gating module 300 selects four first ends to be respectively connected with two TX pin pairs and two RX pin pairs in the first transmission end, and simultaneously, the gating module 300 selects four second ends to be connected with the transmission channel of the control module 100, so that the gating module 300 can respectively and correspondingly conduct the four second ends connected with the transmission channel to the two first ends connected with the RX pin pairs and the two first ends connected with the TX pin pairs, and the control module 100 sends the DP communication signal to the USB Type-C interface to be tested according to the internally constructed DP communication protocol logic, thereby implementing DP display function test on the USB Type-C interface to be tested.

When the test device needs to receive the DP signal from the USB Type-C interface to be tested, the strobe module 300 selects four first ends to connect two TX pin pairs and two RX pin pairs in the first transmission end respectively, and simultaneously, the strobe module 300 selects four second ends to connect the receiving channels of the control module 100, so that the strobe module 300 can correspondingly conduct the four second ends connected to the transmitting channels to the two first ends connected to the RX pin pairs and the two first ends connected to the TX pin pairs respectively, and the control module 100 implements a receiving test on the DP signal of the USB Type-C interface according to the DP communication protocol logic, thereby verifying whether the DP signal output by the USB Type-C interface to be tested accords with the protocol standard. Therefore, the testing device can realize the receiving and transmitting test of 4-lane DP signals on the USB Type-C interface. It should be noted that, the transceiving test for PCIE signals may also be implemented according to the test procedure of DP signals.

Under the condition that the transmitted communication signals are USB signals and DP signals/PCIE signals, the gating module 300 selects two first ends to be correspondingly connected with one TX pin pair and one RX pin pair in the first transmission end respectively, and simultaneously selects two second ends to be connected with a sending channel and a receiving channel of the control module 100, and the gating module 300 can conduct the second ends connected with the sending channel to the first ends connected with the TX pin pair and conduct the second ends connected with the receiving channel to the first ends connected with the RX pin pair, so that the receiving and transmitting test of 2Lane USB signals is realized; meanwhile, the gating module 300 further selects two other first ends to be correspondingly connected with one TX pin pair and one RX pin pair in the first transmission end respectively, and selects two other second ends to be correspondingly connected with two other transmission channels of the control module 100 respectively, so that the transmission test of the 2-lane DP signal or the 2-lane PCIE signal is realized, and finally the transmission and receiving test of the 2-lane USB signal and the 2-lane DP signal/PCIE signal can be realized at the same time.

Based on this, the first end of the gating module 300 can redefine the signal flow of the communication signals transmitted by the plurality of first transmission ends of the first interface module 200, that is, the TX pin pair of the first transmission end can redefine as an RX signal or a TX signal according to the nature of the communication signals, but not limited to a transmission signal, and similarly, the RX pin pair of the first transmission end can redefine as an RX signal or a TX signal according to the nature of the communication signals, but not limited to a reception signal, so that the gating module 300 can be configured into a combination of 4lane output, 4lane input, 2lane input and 2lane input, 1lane output and 2lane input according to the selective conduction of the first end and the second end, and further the control module 100 can test the transmission and reception of various types of communication signals according to the internally configured different protocol logic, for example, can test the output or input of USB communication signals, DP communication signals and PCIE communication signals. That is, the testing device provided in this embodiment not only supports flexible testing applications other than the standard USB Type-C protocol, but also supports the transceiving test of the 4-lane DP signal, and supports the transceiving test of the 4-lane PCIE signal, so that the application field and compatibility of the testing device are greatly expanded.

In the above-mentioned test apparatus for a usb interface, a plurality of receiving channels for receiving communication signals from a device to be tested and a plurality of transmitting channels for transmitting communication signals are configured to the control module 100, and connected to the usb interface of the device to be tested through the first interface module 200, a plurality of first transmitting ends for transmitting communication signals are configured to the first interface module 200, the gating module 300 selectively conducts connection between the first ends and the second ends according to a switching signal transmitted by the control module 100, the first transmitting ends of the first interface module 200 may be connected to the transmitting channels of the control module 100 to perform a transmission test of a part of communication signals on the usb interface, the first transmitting ends of the first interface module 200 may also be connected to the receiving channels of the control module 100 to perform a reception test of a part of communication signals on the usb interface, and the first transmitting ends of the first interface module 200 may also be connected to the receiving channels and the transmitting channels of the control module 100 to perform a transmission test of a part of communication signals on the usb interface. Therefore, the connection between the first transmission end of the first interface module 200 and the transmission channel and/or the receiving channel of the control module 100 is selectively conducted by the gating module 300, so that the universal serial bus interface of the device to be tested can be subjected to the receiving and transmitting test and the performance test of various communication signals, the test of various communication signals output by the universal serial bus interface by using different types of test devices is avoided, the compatibility and the automation degree of the test devices are effectively improved, the test flow is simplified, and the test duration is reduced.

In one embodiment, referring to fig. 3 and 4 in combination, the plurality of first transmission terminals includes a plurality of sets of high-speed differential signal transmission terminals and a plurality of sets of high-speed differential signal reception terminals. The gating module includes: the first gating unit 310 and the second gating unit 320, the first gating unit 310 is configured with a plurality of groups of first channels a, a plurality of groups of second channels B and a plurality of groups of third channels C, the plurality of groups of first channels a are respectively and correspondingly connected with a plurality of groups of high-speed differential signal transmitting ends, the plurality of groups of second channels B are respectively and correspondingly connected with a plurality of transmitting channels of the control module, and the plurality of groups of third channels C are respectively and correspondingly connected with a plurality of receiving channels of the control module. The second gating unit 320 is configured with a plurality of groups of fourth channels E, a plurality of groups of fifth channels F, and a plurality of groups of sixth channels G, where the plurality of groups of fourth channels E are respectively and correspondingly connected to the plurality of groups of high-speed differential signal receiving ends, the plurality of groups of fifth channels F are respectively and correspondingly connected to the plurality of receiving channels of the control module, and the plurality of groups of sixth channels G are respectively and correspondingly connected to the plurality of transmitting channels of the control module. The control module is configured to send a first switching signal to the first gating unit 310, so that the first gating unit 310 selectively communicates the first channel a to the second channel B or the third channel C, and send a second switching signal to the second gating unit 320, so that the second gating unit 320 selectively communicates the fourth channel E to the fifth channel F or the sixth channel G.

The multiple groups of high-speed differential signal transmitting ends can be multiple high-speed differential signal pin pairs (TX 1+/TX1-, TX2+/TX 2-) described above, namely, each group of high-speed differential signal transmitting ends comprises two TX differential pins (TX+/TX), and the multiple groups of high-speed differential signal receiving ends can be multiple high-speed differential signal pin pairs (RX 1+/RX1-, RX2+/RX 2-) described above, namely, each group of high-speed differential signal receiving ends comprises two RX differential pins (RX+/RX).

Wherein, a set of first channels a1+/a1 of the first gating unit 310 is correspondingly connected with a set of high-speed differential signal transmitting ends TX1+/TX1-, another set of first channels a2+/a2 of the first gating unit 310 is correspondingly connected with a set of high-speed differential signal transmitting ends TX2+/TX2-, a set of second channels b1+/b1 of the first gating unit 310 is correspondingly connected with a transmitting channel gtx1+/gtx1_tx of the control module, another set of second channels b2+/B2 of the first gating unit 310 is correspondingly connected with a transmitting channel gtx2+/gtx2_tx of the control module, a set of third channels c1+/c1 of the first gating unit 310 is correspondingly connected with a receiving channel gtx1+/gtx1_rx of the control module, and another set of third channels c2+/c2 of the first gating unit 310 is correspondingly connected with a receiving channel gtx2+/gtx2_rx_tx of the control module.

The SEL1 channel of the first gating unit 310 is configured to receive a first switching signal sent by the control module, selectively communicate the first channel a to the second channel B or the third channel C according to the first switching signal, for example, when the first gating unit 310 switches on a connection between the first channel a and the second channel B, the control module may be implemented to output a 1-lane communication signal or a 2-lane communication signal to the USB Type-C interface to be tested, and when the first gating unit 310 switches on a connection between the first channel a and the third channel C, the control module may be implemented to receive the 1-lane communication signal or the 2-lane communication signal input from the USB Type-C interface to be tested.

The fourth channels e1+/e1 of the second gating unit 320 are correspondingly connected with the first high-speed differential signal receiving terminal RX1+/RX1-, the fourth channels e2+/e2 of the second gating unit 320 are correspondingly connected with the first high-speed differential signal receiving terminal RX2+/RX2-, the fifth channels f1+/f1 of the second gating unit 320 are correspondingly connected with the receiving channels gtx3+/gtx3_rx of the control module, the fifth channels f2+/f2 of the second gating unit 320 are correspondingly connected with the receiving channels gtx4+/gtx4_rx of the control module, the sixth channels g1+/g1 of the second gating unit 320 are correspondingly connected with the transmitting channels gtx3+/gtx3_tx of the control module, and the sixth channels g2+/g2 of the second gating unit 320 are correspondingly connected with the transmitting channels gtx4+/gtx4_tx of the control module.

The SEL2 channel of the second gating unit 320 is configured to receive the second switching signal sent by the control module, selectively communicate the fourth channel E to the fifth channel F or the sixth channel G according to the second switching signal, for example, when the second gating unit 320 switches on the connection between the fourth channel E and the fifth channel F, the control module may receive a 1-lane communication signal or a 2-lane communication signal input from the USB Type-C interface to be tested, and when the second gating unit 320 switches on the connection between the fourth channel E and the sixth channel G, the control module may output the 1-lane communication signal or the 2-lane communication signal to the USB Type-C interface to be tested. Alternatively, the first switching signal and the second switching signal may be level signals, such as a high level signal or a low level signal.

Therefore, based on the cooperation conduction of the first gating unit 310 and the second gating unit 320, by controlling the high-low level states of the first switching signal and the second switching signal, the second channel B or the third channel C is selected to be connected with the first channel a, and the fifth channel F or the sixth channel G is selected to be connected with the fourth channel E, the gating module can control the output or input of the communication signals of different lanes, so that the control module can perform bidirectional communication of multiple communication signals between the control module and the USB Type-C interface to be tested, and the control module can perform the transceiving test and the performance verification of multiple types of communication signals on the USB Type-C interface to be tested.

In one embodiment, as shown in fig. 5, the plurality of first transmission terminals further includes a low-speed differential signaling terminal, and the testing device further includes: a low-speed signal transceiver module 400, an audio processing module 500, and a first signal switching module 600. The low-speed signal transceiver module 400 is connected to the control module 100, and is used for performing transceiving processing on the USB2.0 signal. The audio processing module 500 is connected to the control module 100, and is configured to transfer a digital audio signal between the control module 100 and the low-speed differential signal transceiver. The first end of the first signal switching module 600 is connected to the low-speed differential signal transceiver, and the two second ends of the first signal switching module 600 are respectively connected to the low-speed signal transceiver 400 and the audio processing module 500. The control module 100 is configured to selectively conduct a connection between the first end and any second end of the first signal switching module 600, so that the low-speed differential signal transceiver transmits a USB2.0 signal or a digital audio signal, and the control module 100 is further configured to perform a USB2.0 function test on a device to be tested based on the USB2.0 signal and perform an audio function test on the device to be tested based on the digital audio signal.

The low-speed differential signal receiving and transmitting ends are the low-speed differential signal pin pair (D+/D-) described above, and the low-speed differential signal receiving and transmitting ends are two pairs, which are respectively marked as D_A+/D_A-and D_B+/D_B-in fig. 5. The first end of the first signal switching module 600 is correspondingly connected to the low-speed differential signal receiving and transmitting end, one second end of the first signal switching module 600 is connected to the low-speed signal receiving and transmitting module 400, the other second end of the first signal switching module 600 is connected to the audio processing module 500, and then the control module 100 sends a corresponding level signal to the first signal switching module 600 so that the first signal switching module 600 selectively conducts connection between the low-speed signal receiving and transmitting module 400 and the low-speed differential signal receiving and transmitting end, and the USB2.0 signal output by the control module 100 can be transmitted to the low-speed differential signal receiving and transmitting end through the first signal switching module 600 to detect whether the USB2.0 signal output by the USB Type-C interface to be tested can be normally received or not, or the USB2.0 signal output by the USB Type-C interface to be tested is transmitted to the control module 100 through the low-speed differential signal receiving and transmitting end, so that the USB2.0 function test on the USB Type-C interface to be tested is realized.

Meanwhile, the first signal switching module 600 may also selectively conduct connection between the audio processing module 500 and the low-speed differential signal receiving and transmitting end, where the digital audio signal output by the control module 100 may be transmitted to the low-speed differential signal receiving and transmitting end through the first signal switching module 600, so as to detect whether the USB Type-C interface of the device to be tested (for example, digital audio device) can normally receive the digital audio signal, or whether the digital audio signal output by the USB Type-C interface to be tested is transmitted to the control module 100 through the low-speed differential signal receiving and transmitting end through the first signal switching module 600, so as to detect whether the USB Type-C interface to be tested can normally output the digital audio signal, thereby implementing the digital audio function test on the USB Type-C interface to be tested. Based on this, the USB2.0 signal or the digital audio signal is selectively transferred to the low-speed differential signal transceiver through the first signal switching module 600, so that multiplexing transfer of the USB2.0 signal and the digital audio signal is realized on the low-speed differential signal transceiver.

In one embodiment, with continued reference to fig. 5, the plurality of first transmission terminals further includes an auxiliary transmission terminal, the audio processing module 500 is further configured to transfer analog audio signals between the control module 100 and the auxiliary transmission terminal, and the test apparatus further includes: the first end of the second signal switching module 700 is connected with the auxiliary transmission end, and two second ends of the second signal switching module 700 are respectively connected with the audio processing module 500 and the control module 100. The control module 100 is configured to transmit an auxiliary signal to the second signal switching module 700 when transmitting the DP signal, and is further configured to selectively conduct a connection between the first end and any second end of the second signal switching module 700, so that the auxiliary transmission end transmits the analog audio signal or the auxiliary signal. The control module 100 is further configured to perform an audio function test on the device to be tested based on the analog audio signal.

The auxiliary transmission end is the auxiliary communication pin (SBU 1/SBU 2) described above, the first end of the second signal switching module 700 is correspondingly connected to the auxiliary transmission end, and one second end of the second signal switching module 700 is connected to the audio processing module 500, and the other second end is connected to the control module 100, so that the control module 100 sends a corresponding level signal to the second signal switching module 700 to enable the second signal switching module 700 to selectively conduct the connection between the audio processing module 500 and the auxiliary transmission end, and the analog audio signal output by the control module 100 can be transmitted to the auxiliary transmission end through the second signal switching module 700 to detect whether the USB Type-C interface of the device to be tested (for example, the analog audio device) can normally receive the analog audio signal, or the analog audio signal output by the USB Type-C interface to be tested is transmitted to the control module 100 through the second signal switching module 700 to detect whether the USB Type-C interface to be tested can normally output the analog audio signal, thereby implementing the analog audio function test on the USB Type-C interface to be tested.

Meanwhile, when the control module 100 is selectively turned on through the gating module 300 to perform a display function test with the DP signal transmitted by the USB Type-C interface to be tested, the level signal output by the control module 100 needs to control the second signal switching module 700 to turn on the connection between the control module 100 and the auxiliary transmission terminal, so that the auxiliary signal (AUX signal) can be transmitted between the control module 100 and the auxiliary transmission terminal to assist in the transmission of the DP signal. Based on this, by switching on the second signal switching module 700, the control module 100 or the audio processing module 500 can be selectively turned on to the auxiliary transmission terminal, thereby realizing multiplexing transfer of the analog audio signal and the auxiliary signal on the auxiliary transmission terminal.

In one embodiment, as shown in fig. 5, the audio processing module 500 includes: the audio encoding and decoding unit 510, the digital switching unit 520 and the analog switching unit 530 are connected with the control module 100, and are used for audio encoding of a first audio signal transmitted by the device to be tested for transmission to the control module 100, and audio decoding of a second audio signal transmitted by the control module 100 for transmission to the device to be tested. The digital switch unit 520 is respectively connected to the audio codec unit 510 and the first signal switching module 600, and is used for transferring digital audio signals between the audio codec unit 510 and the first signal switching module 600. The analog switch unit 530 is respectively connected to the audio codec unit 510 and the second signal switching module 700, and is used for transferring analog audio signals between the audio codec unit 510 and the second signal switching module 700.

Under the condition that the first audio signal transmitted by the USB Type-C interface of the device to be tested is a digital audio signal, the first audio signal is transmitted to the first end of the first signal switching module 600 through the low-speed differential signal receiving and transmitting end, and the first signal switching module 600 conducts the connection between the first end and the second end connected to the digital switching unit 520, so that the first audio signal is transmitted to the audio codec unit 510 through the digital switching unit 520 and then is transmitted to the control module 100 for analysis, so as to detect whether the digital audio signal output by the USB Type-C interface to be tested is normal.

Under the condition that the first audio signal transmitted by the USB Type-C interface of the device to be tested is an analog audio signal, the first audio signal is transmitted to the first end of the second signal switching module 700 through the auxiliary transmission end, and the second signal switching module 700 is connected between the first end and the second end connected to the analog switch unit 530, so that the first audio signal is transmitted to the audio codec unit 510 through the analog switch unit 530, and the audio codec unit 510 needs to encode the analog audio signal to be converted into a digital signal which can be processed by the control module 100, and the control module 100 analyzes according to the encoded digital audio signal, so that the function of outputting the analog audio signal by the USB Type-C interface to be tested is detected.

Similarly, when the second audio signal transmitted by the control module 100 is an analog audio signal, if the device to be tested is an analog audio device, the analog audio signal transmitted by the control module 100 may be sent to the USB Type-C interface to be tested through the audio codec unit 510-the analog switch unit 530-the second signal switching module 700-the conduction path of the auxiliary transmission end, so as to detect whether the USB Type-C interface to be tested can normally receive the analog audio signal; if the device to be tested is a digital audio device, the analog audio signal transmitted by the control module 100 may be first decoded by the audio codec unit 510 to be converted into a digital audio signal, and then sent to the USB Type-C interface to be tested through the digital switch unit 520-the conduction path of the first signal switching module 600-the low-speed differential signal receiving and transmitting end, so as to detect the receiving function of the digital audio signal of the USB Type-C interface to be tested.

Alternatively, the digital switching unit 520 may be a Multiplexer (MUX) that can switch and multiplex a plurality of digital audio signals to be output to a single output channel for selecting and switching different audio input sources, and also for splitting and synthesizing audio signals.

In one embodiment, as shown in fig. 5, the low-speed signaling module 400 includes: the first USB physical layer unit 410 and the second USB physical layer unit 420, where the first USB physical layer unit 410 is connected to the control module 100, and is configured to support the transceiving of USB2.0 signals when the device to be tested is a master device. The second USB physical layer unit 420 is connected to the control module 100, and is configured to support the transceiving of USB2.0 signals when the device to be tested is a slave device. One end of the transceiver switching unit 430 is connected to the first signal switching module 600, and two second ends of the transceiver switching unit 430 are connected to the first USB physical layer unit 410 and the second USB physical layer unit 420, respectively. The control unit is configured to selectively conduct a connection between the first end and any one of the second ends of the transceiver switching unit 430.

The first USB physical layer unit 410 and the second USB physical layer unit 420 may be USB2.0 PHY chips, where the USB2.0 PHY chips are responsible for signal conversion of the bottommost layer and are connected to two second ends of the transceiver switching unit 430 through ULPI interfaces, and the first USB physical layer unit 410 is configured in a device (slave) mode, and in the case that the device to be tested is a master device (e.g., a PC host), the transceiver switching module switches on the connection between the first signal switching module 600 and the first USB physical layer unit 410, so that the control module 100 may implement control of the first USB physical layer unit 410 and transceiver testing of USB2.0 data according to programmable logic. The second USB physical layer unit 420 is configured in HOST (master) mode, and in the case that the device to be tested is a slave device (e.g. a USB storage device), the transceiver switching module conducts the connection between the first signal switching module 600 and the second USB physical layer unit 420, so that the control module 100 can implement control of the second USB physical layer unit 420 and the transceiver test of USB2.0 data according to the programmable logic.

In one embodiment, as shown in fig. 5, the plurality of first transmission terminals further includes a first configuration terminal and a first power terminal, and the testing device further includes: the port control module 800 and the power transmission module 900 are respectively connected with the first configuration terminal and the control module 100, and the port control module 800 is used for determining the equipment type of the equipment to be tested and the insertion direction of the universal serial bus interface according to the voltage signal of the first configuration terminal. The power transmission module 900 is respectively connected to the first power supply terminal and the port control module 800, and is used for detecting the charge and discharge functions of the usb interface of the device to be tested.

The first configuration terminal is the configuration pin (CC 1/CC 2) described above, the first power terminal is the power supply pin (VBUS) described above, where the first configuration terminal may be used to detect an insertion and extraction state of the first interface module 200, and when the first interface module 200 is inserted into the USB Type-C connector to be tested, the port control module 800 may determine a cable connection and a direction thereof according to monitoring a voltage on the first configuration terminal, and distinguish a master-slave relationship between the DFP and the UFP to determine a data transmission mode and a direction of power transmission. Specifically, the DFP is a power-supplied downstream port, which may be understood as a master device, such as a power adapter, the UFP is a power-supplied upstream port, which may be understood as a slave device, such as a usb disk, a mobile hard disk, and the DRP is a dual-role port, and may be dynamically switched between the DFP and the UFP, such as a PC computer. Based on this, by using the port control module 800, communication and coding analysis of the first configuration side signal are implemented to support the DRP mode, and flexible switching between the DFP mode and the UFP mode is implemented.

Further, a USB fast charging Protocol (PD) is one of the mainstream fast charging protocols, and its maximum output Power can reach 100W, and is applied to Power supplies of various devices, where the USB fast charging protocol needs to use a first configuration terminal as a data transmission channel to negotiate a charging voltage, current and Power transmission direction. In the case where the device to be detected is a powered device, the port control module 800 may control and switch the voltage of the power transmission module 900 according to the configuration signal transmitted by the first configuration terminal, and output the power of the USB Type-C interface adapted to the device to be detected to detect the charging function of the USB Type-C interface. In the case where the device to be detected is a power supply end device, the port control module 800 may control the power transmission module 900 to receive the power transmitted by the USB Type-C interface of the device to be detected to detect a discharging function (i.e., a power supply function) of the USB Type-C interface. The testing device is based on supporting the USB PD protocol to detect the charge and discharge function of the USB Type-C interface to be tested.

Optionally, the port control module 800 includes a CCG4 controller.

In one embodiment, as shown in fig. 5, the power transfer module 900 includes: the electronic load unit 910 and the charging unit 920, the electronic load unit 910 is respectively connected with the port control module 800 and the first power supply terminal VBUS, and is used for testing the discharging function of the universal serial bus interface when the device type of the device to be tested is the master device. The charging unit 920 is respectively connected to the port control module 800 and the first power supply terminal VBUS, and is configured to output a charging voltage matched with the device to be tested to the first power supply terminal VBUS under the condition that the universal serial bus interface supports the fast charging protocol, so as to detect a charging function of the universal serial bus interface.

When the port control module 800 learns that the current testing device is in UFP mode (slave device) according to the configuration information transmitted by the first configuration end CC1/CC2, the port control module 800 may control an electronic LOAD (E-LOAD) unit to simulate Power consumption of a LOAD in UFP mode, so as to verify Power transmission (Power delivery) capability of an upstream device (master device), thereby implementing a discharging function of testing the USB Type-C interface. Further, the charging unit 920 is used as a power supply (power supply), and after the USB Type-C interface to be tested is matched with the first configuration terminal in the PD protocol, the charging power supply further outputs a corresponding voltage to the first power terminal, so as to supply power to the USB Type-C interface to be tested, thereby implementing detection of the charging function of the USB Type-C interface to be tested. Alternatively, the charging unit 920 may implement voltage switching between 20V/5V, and may provide a maximum of 100W of output power.

In one embodiment, as shown in fig. 5, a first measurement module is disposed between the port control module 800 and the first configuration terminal CC1/CC2 to monitor the current signal and the voltage signal on the transmission link of the first configuration terminal CC1/CC2 in real time. On a signal link of a first configuration end CC1/CC2 related to power transmission, a current measurement/voltage measurement (IM/VM) circuit is designed as a first measurement module, so as to monitor the values of current and voltage on the link in real time.

In one embodiment, as shown in fig. 5, a protection module and a second measurement module are sequentially disposed between the electronic load unit 910 and the first power source terminal VBUS, and/or a protection module and a second measurement module are sequentially disposed between the charging unit 920 and the first power source terminal VBUS. The protection module is used for providing overcurrent protection and overvoltage protection, and the second measurement module is used for monitoring current signals and voltage signals on the VBUS transmission link of the first power source end in real time.

An over-current protection/over-voltage protection (OCP/OVP) circuit may be designed on the transmission link between the electronic load unit 910 and the first power supply terminal VBUS as a protection module to avoid damage to the testing device caused by over-current or over-voltage of the first power supply terminal VBUS, and a current measurement/voltage measurement (IM/VM) circuit may be further designed on the protection module and the first power supply terminal VBUS as a second measurement module to realize real-time monitoring of the current and voltage values on the link. Similarly, an over-current protection/over-voltage protection (OCP/OVP) circuit may be designed on the transmission link between the charging unit 920 and the first power source terminal VBUS as a protection module to avoid damage to the testing device caused by over-current or over-voltage of the first power source terminal VBUS, and a current measurement/voltage measurement (IM/VM) circuit may be further designed between the protection module on the link of the charging unit 920 and the first power source terminal VBUS as a second measurement module to realize real-time monitoring of the values of the current and the voltage on the link. It should be noted that the protection module and the second measurement module may be simultaneously designed on the transmission link of the electronic load unit 910 and the transmission link of the charging unit 920.

In one embodiment, as shown in fig. 6, the number of the first interface modules 200 is plural, and the circuit connection structure between each first interface module 200 and the control module 100 is the same. That is, the present embodiment can design the first interface module 200 of multiple standard USB Type-C accept, and can realize simultaneous testing of multiple devices under test (device under test, DUT). The circuit structures between each first interface module 200 and the control module 100 are the same, and it should be noted that the plurality of first interface modules 200 may perform power control through one port control module 800.

In one embodiment, as shown in fig. 6, the test apparatus further includes: a second interface module 1001 and a third interface module 1002, the second interface module 1001 being configured with a second transmission terminal for transmitting Thunderbolt signals between the control module 100 and a slave device under test, the third interface module 1002 being configured with a third transmission terminal for transmitting Thunderbolt signals between the control module 100 and a master device under test. The Thunderbolt controller 1003 is respectively connected with the control module 100, the second transmission end, and the third transmission end, and is configured to perform transceiving processing on the Thunderbolt signals transmitted by the second transmission end and the third transmission end.

The second interface module 1001 and the third interface module 1002 are Thunderbolt physical connectors (TBT, commonly called lightning interfaces), and the lightning interfaces have the characteristics of fast speed, strong power supply, compatibility with lightning and USB, displayPort, PCIE interfaces/protocols, not only can transmit data and high-quality images, but also can drive high-power consumption peripherals, and can be conveniently connected with external display cards. Further, the programmable protocol logic built in the control module 100 supports the Thunderbolt interface protocol, the second interface module 1001 is connected with the slave device to be tested in the DFP mode, and the second transmission end of the second interface module 1001 may include a differential signal pin pair (RX 1+/RX1-, RX2+/RX2-, TX1+/TX1-, TX2+/TX 2-) and an auxiliary transmission pin (SBU 1/SBU 2), and the Thunderbolt controller 1003 may enable the Thunderbolt signal output by the control module 100 to be transmitted to the Thunderbolt interface of the slave device to be tested through the Thunderbolt controller 1003, so as to implement the signal receiving test of the Thunderbolt interface. In addition, the third interface module 1002 is connected to the main device under test in UFP mode, and the third transmission end of the third interface module 1002 may also include a differential signal pin pair (RX 1+/RX1-, RX2+/RX2-, TX1+/TX1-, TX2+/TX 2-) and an auxiliary transmission pin (SBU 1/SBU 2), where the Thunderbolt controller 1003 connects the control module 100 and the third transmission end of the third interface module 1002, so that the Thunderbolt signal output by the rising bolt interface under test may be transmitted to the control module 100 through the rising bolt controller 1003 to implement the signal transmission test of the rising bolt interface. Based on this, by setting the second interface module 1001, the third interface module 1002 and the Thunderbolt controller 1003, the testing device can be compatible with communication and detection of the Thunderbolt signal, so that function verification on different types of devices to be tested can be realized, and the testing device can be applied to testing of electronic products conforming to the Thunderbolt protocol standard.

In one embodiment, as shown in fig. 6, the second transmission terminal includes a second configuration terminal CC1/CC2 and a second power terminal VBUS, and the third transmission terminal includes a third configuration terminal CC1/CC2 and a third power terminal VBUS. The number of the port control modules is multiple, wherein one port control module is respectively connected with the control module 100, the second configuration end CC1/CC2 and the third configuration end CC1/CC 2. The number of the charging units is multiple, a part of the charging units are respectively connected with the second power supply end VBUS and the port control module, a protection module and a second measurement module are sequentially arranged between the part of the charging units and the second power supply end, the other part of the charging units are respectively connected with the third power supply end VBUS and the port control module, and a protection module and a second measurement module are sequentially arranged between the other part of the charging units and the third power supply end VBUS. Namely, in the TBT test circuit, the same port control module as the USB Type-C test circuit, a matched protection module and a second measurement module are designed to realize real-time monitoring of the current and voltage values on the TBT link and overcurrent protection and overvoltage protection of the TBT link.

In one embodiment, the test apparatus further comprises: a power module 1004 for supplying power to the test device. The Power module 1004 may include a Power Input unit DC Input (24V/360W) for introducing an external direct current Power into the test apparatus, and a Power supply unit (Power supply) that may be a Power network composed of various types of Power chips for supplying Power to the respective chip modules and devices of the test apparatus.

In one embodiment, the control module 100 includes: the device comprises a transceiver unit 110, a logic unit 120, a link analysis unit 130 and a peripheral management unit 140, wherein the transceiver unit 110 is configured with a receiving channel and a transmitting channel and is used for supporting the transceiver of communication signals, the logic unit 120 is used for providing a plurality of communication protocols of the communication signals, the link analysis unit 130 is used for evaluating the link quality of the communication signals and performing eye diagram test, and the peripheral management unit 140 is used for configuring test parameters of a test device and feeding back test data to an upper computer.

The control module 100 may be a System on Chip (SoC), which implements a circuit with functions of signal acquisition, conversion, storage, processing, input, output (I/O) and the like of a System on a single silicon Chip, and has powerful data, image transmission and processing capabilities.

The transceiver unit 110 may be a high-speed transceiver GTX, the second channel B of the first gating unit 310 is connected to the transmitting channel of the transceiver unit 110, the third channel C of the first gating unit 310 is connected to the receiving channel of the transceiver unit 110, the fifth channel F of the second gating unit 320 is connected to the receiving channel of the transceiver unit 110, and the sixth channel G of the second gating unit 320 is connected to the transmitting channel of the transceiver unit 110, so that the control module 100 may perform data transmission test on various communication signals.

Further, by performing programmable logic design on the logic unit 120, communication and interface protocols of high-speed digital signals such as USB3.0/USB3.1, PCIE2.0/PCIE3.0, DP1.4, TBT3 and the like are realized, so that not only flexible test applications except for the standard USB Type-C protocol can be supported, but also transceiving tests of 4-lane DP signals and transceiving tests of 4-lane PCIE signals can be supported.

Further, the link analysis unit 130 is configured with an advanced link analyzer (Advanced Link Analyzer) to implement link quality evaluation and eye diagram test of various high-speed digital signals, wherein an eye diagram is formed by superimposing waveforms of a plurality of bits transmitted by an interface, and communication signal quality when a large amount of data can be intuitively reflected from the eye diagram, so that an additional high-end oscilloscope and other instruments are not needed, and test cost is greatly saved. The peripheral management unit 140 is used as a peripheral circuit of the control module 100 for configuring test parameters of the test device and feeding back test data to the host computer.

The peripheral management unit 140 may include, among others, USB otg (USB On-the-Go), USB-UART, ETH (EtherNet), CLOCK, DDR4 (Double Data Rate 4, fourth generation memory), EMMC (Embedded Multi Media Card ), EEPROM (Electrically Erasable Programmable read only memory, charged erasable programmable read only memory), TEMPERATURE SENSOR (temperature sensor), LED/ID/SW (LED switch), and RESERVED (register) circuits.

The USB otg circuit is used to download and update boot programs, linux systems, and driving files of the control module 100. The USB-UART circuit is used for debugging and information printing. The ETH circuit is used for realizing 1000M Ethernet communication and transmitting the data and records tested by the testing device to the upper computer for further analysis. The CLOCK circuit is used to implement a CLOCK network that is provided to the various modules of control module 100 for use. DDR4 is used for data caching, and a total of 8 slices are designed, 4 slices are used on the HPS (hard core processor system) of the control module 100, and 4 slices are used for the programmable logic slices (logic unit 120) of the control module 100. The EMMC circuit is used to store boot programs, linux systems, and drive files of the control module 100, as well as test records and data. The EEPROM is used for recording version information of the signal substrate, updating the record and the factory number. TEMPERATURE SENSOR circuit is used for temperature monitoring. The LED/ID/SW circuitry is used for status indication, substrate ID identification, ethernet IP address setting. The RESERVED circuit is connected to the I/O of the control module 100 for reservation and expansion.

The universal serial bus interface testing device provided by the application can realize the unification of design simultaneously, is compatible with various functions and other special application scenes covered by the USB Type-C interface, and particularly has the following advantages: the device testing system has the advantages that the device testing system is provided with a plurality of standard USB Type-C reports and a plurality of TBT reports compatible with USB Type-C physical interfaces, a plurality of tested devices can be tested simultaneously, the USB Type-C reports support DRP, DFP and UFP intelligent identification and switching, and ports do not need to be plugged and unplugged and replaced when different modes are tested; board-level eye diagram test and signal link quality analysis supporting high-speed digital signals (USB 3.0/USB3.1, PCIE2.0/PCIE3.0, DP1.4 and TBT 3) are realized, and extra high-end oscilloscopes and other instruments are not needed, so that the test cost is greatly saved; flexible test application except the standard USB Type-C protocol is supported, the receiving and transmitting test of 4-lane DP signals is supported, and the receiving and transmitting test of 4-lane PCIE signals is supported; simultaneously supporting digital audio signals and analog audio tests; the test device has the advantages of strong function and wide coverage, and can be applied to the test field of various electronic products which are based on the USB Type-C physical interface and conform or do not conform to the USB Type-C standard protocol; the method supports the Thunderbolt interface protocol and can be applied to the test of the electronic products conforming to the Thunderbolt protocol standard; the method supports USB PD (Power Delivery) and detection, supports E-load test, and can simulate charge and discharge and monitor voltage and current parameters in real time.

Based on this, need not to design and upgrade and maintain various different kinds of test equipment again alone when using the testing arrangement of this application, avoided an electronic product to need to verify all functions with many test equipment. And the testing arrangement of this application can reuse, can test all electronic products based on USB Type-C interface to and the testing arrangement of this application can be with cost and equipment size control in reasonable within range, but greatly reduced enterprise's production and management operation cost.

In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "ideal embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above embodiments may be arbitrarily combined, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A test device for a universal serial bus interface, comprising:

2. The device for testing a universal serial bus interface according to claim 1, wherein the plurality of first transmission terminals includes a plurality of sets of high-speed differential signal transmission terminals and a plurality of sets of high-speed differential signal reception terminals; the gating module includes:

3. The device for testing a universal serial bus interface according to claim 1, wherein the plurality of first transmission terminals further comprises a low-speed differential signaling terminal; the test device further includes:

4. The device for testing a universal serial bus interface according to claim 3, wherein the plurality of first transmission terminals further comprises an auxiliary transmission terminal, the audio processing module further configured to pass analog audio signals between the control module and the auxiliary transmission terminal; the test device further includes:

5. The universal serial bus interface testing device according to claim 4, wherein the audio processing module comprises:

6. The device for testing a universal serial bus interface according to claim 1, wherein the plurality of first transmission terminals further comprises a first configuration terminal and a first power terminal, the device for testing further comprising:

7. The device for testing a universal serial bus interface according to claim 1, wherein the number of the first interface modules is plural, and a circuit connection structure between each of the first interface modules and the control module is the same.

8. The universal serial bus interface testing apparatus of claim 1, further comprising:

9. The device for testing a universal serial bus interface according to claim 8, wherein the second transmission terminal comprises a second configuration terminal and a second power terminal, and the third transmission terminal comprises a third configuration terminal and a third power terminal; the number of the port control modules is multiple, and one port control module is respectively connected with the control module, the second configuration end and the third configuration end;

10. The universal serial bus interface testing apparatus according to any one of claims 1 to 9, wherein the control module comprises: