CN114764235B - Serializer/deserializer SERDES interface test system and method - Google Patents
Serializer/deserializer SERDES interface test system and method Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
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Abstract
The embodiment of the application provides a serializer/deserializer SERDES interface test system and a method, wherein the system comprises the following steps: the input device, the test conversion assembly, the cabin domain controller and the display screen are connected in sequence; the input device is used for acquiring display attribute information from the test conversion assembly and sending image signals to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component; the test conversion component is used for converting the image signal sent by the input device into a serial SERDES signal supported by the cabin domain controller; the cockpit area controller is used for converting the serial SERDES signals into parallel image signals and transmitting the image signals to a display screen for display. The system of the embodiment of the application realizes the test of the SERDES interface of the cabin domain controller, has lower cost, and realizes the modularized design and the decoupling of the cabin domain controller and other domain controllers.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a serializer/deserializer SERDES interface testing system and method.
Background
The intelligent cabin is an intelligent automobile internal space in popular terms, and along with the improvement of the automobile electronic degree, the intelligent cabin integrating a vehicle-mounted entertainment system, a streaming media central rearview mirror, a Head Up Display (HUD), a full liquid crystal instrument, a car networking module and the like brings more intelligent and safe interaction experience, and meanwhile, along with the development of an autopilot technology, an interface between an autopilot domain controller and an intelligent cabin domain controller becomes a key interface, so that the interface between the autopilot domain controller and the intelligent cabin domain controller needs to be tested and verified.
Currently, the interface between the autopilot domain controller and the intelligent cockpit domain controller widely uses a SERializer/DESerializer (SERDES) interface. As shown in fig. 1, if the SERDES interface is to be tested and verified, a camera needs to be built to input to the autopilot domain controller, output to the intelligent cockpit domain controller through a serializer of the autopilot domain controller, and output to a screen for display. In the scheme, the camera and the autopilot domain controller are required to be built for testing, and the cost is high.
Disclosure of Invention
The embodiment of the application provides a serializer/deserializer SERDES interface test system and a method, which are used for reducing the cost of SERDES interface test.
In a first aspect, an embodiment of the present application provides a serializer/deserializer SERDES interface testing system, including:
the input device, the test conversion assembly, the cabin domain controller and the display screen are connected in sequence;
the input device is used for acquiring display attribute information from the test conversion assembly and sending an image signal to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component;
the test conversion component is used for converting the image signal sent by the input device into a serial SERDES signal supported by the cabin domain controller;
the cockpit area controller is used for converting the serial SERDES signals into parallel image signals and transmitting the image signals to the display screen;
the display screen is used for displaying the image signals.
In one possible implementation, the test conversion component includes: the input ends of the memory and the serializer are respectively connected with the input device, and the output end of the serializer is connected with the intelligent cabin controller;
the memory is used for storing the display attribute information;
the serializer is used for converting the image signals input by the input device into the serial SERDES signals.
In one possible implementation, the cabin domain controller comprises: cabin domain chip and deserializer; the input end of the deserializer is connected with the output end of the serializer, the output end of the deserializer is connected with the input end of the cabin area chip, and the output end of the cabin area chip is connected with the display screen;
wherein the deserializer is configured to convert the serial SERDES signal into parallel image signals;
the cabin domain chip is used for analyzing the parallel image signals and transmitting the analyzed image signals to the display screen.
In one possible implementation, the test conversion assembly further includes: the high-definition multimedia interface HDMI decoy, the memory sets up in the HDMI decoy, the one end of HDMI decoy with input device is connected, the other end of HDMI decoy with the serializer is connected.
In one possible implementation, one end of the HDMI spoofer is connected to the serializer through an HDMI line.
In one possible implementation, the image signal input by the input device is a TMDS data stream that minimizes transmission differential signals.
In one possible implementation, the input device is connected to the memory via an integrated circuit bus I2C;
the input device is connected with the serializer through a high definition multimedia interface HDMI.
In one possible implementation, the memory is a charged erasable programmable read-only memory EEPROM.
In one possible implementation, the display attribute information is extended display identification data EDID.
In a second aspect, an embodiment of the present application provides an interface testing method, applied to the system as in any one of the first aspects, the method including:
acquiring display attribute information from the test conversion assembly, and sending an image signal to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component;
converting the image signal sent by the input device into a serial SERDES signal supported by the cabin domain controller;
the serial SERDES signal is converted into parallel image signals and the image signals are displayed.
The embodiment of the application provides a serializer/deserializer SERDES interface test system and a method, wherein the system comprises the following steps: the input device, the test conversion assembly, the cabin domain controller and the display screen are connected in sequence; the input device is used for acquiring display attribute information from the test conversion assembly and sending an image signal to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component; the input device is used for handshaking with the test conversion assembly by acquiring display attribute information from the test conversion assembly, then the input device is used for sending an image signal to the test conversion assembly, the test conversion assembly is used for converting the image signal into a serial SERDES signal, and the serial SERDES signal is converted into the image signal by the cockpit domain controller, so that the image signal is displayed through the display screen, and the test verification of the SERDES interface of the cockpit domain controller is completed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram of an interface test system in the prior art;
fig. 2 is a schematic structural diagram of an embodiment of a serializer/deserializer SERDES interface testing system according to the present application;
fig. 3 is a schematic structural diagram of another embodiment of a serializer/deserializer SERDES interface testing system according to the present application;
fig. 4 is a schematic structural diagram of another embodiment of a serializer/deserializer SERDES interface testing system according to the application;
fig. 5 is a schematic diagram of an embodiment of a SERDES interface test system according to the present application;
FIG. 6 is a schematic diagram of a test conversion module according to an embodiment of the present application;
fig. 7 is a schematic diagram of an implementation flow of an embodiment of a SERDES interface testing method provided by the present application;
fig. 8 is a flow chart of an embodiment of a SERDES interface testing method provided by the present application.
Specific embodiments of the present disclosure have been shown by way of the above drawings and will be described in more detail below. These drawings and the written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The terms "comprising" and "having" and any variations thereof in the description and claims of the application and in the drawings are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Firstly, the nouns and application scenes related to the application are introduced:
the SERDES interface is a high-speed serial interface, mainly uses differential signal transmission technology, has the characteristics of low power consumption, strong interference resistance and high transmission speed, and theoretically, the highest transmission rate of the serial interface can reach more than 10 Gbps.
The SERDES interface test system of the embodiment of the application is applied to a scene of testing the interface of the cabin controller. The interface is for example the widely used SERDES interface. As shown in fig. 1, in order to perform test and verification of the SERDES interface, a camera needs to be built to input to the autopilot domain controller, output to the cockpit domain controller through a serializer of the autopilot domain controller, and output to a screen for display. In the scheme, the camera and the autopilot domain controller are required to be built for testing, and the cost is high.
In the scheme, the SERDES interface channel verification of the cabin domain controller is not decoupled from the automatic driving domain controller, so that the development of the cabin domain controller is restricted.
Further, if the SERDES chip is replaced, the autopilot domain controller and the corresponding camera need to be replaced, so that the operation is complex and the cost is high.
In the interface test system of the embodiment of the application, the display attribute information is stored in the test conversion component, and the display attribute information comprises: the input device sends image signals to the test conversion assembly according to the display attribute information, namely, the input device acquires the display attribute information from the test conversion assembly so as to handshake with the test conversion assembly, then the input device sends the image signals to the test conversion assembly, the test conversion assembly converts the image signals into serial SERDES signals, and the cabin domain controller converts the serial SERDES signals into image signals so as to display the serial SERDES signals through a display screen, thereby completing the test of SERDES interfaces.
The technical scheme of the application is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Fig. 2 is a schematic structural diagram of an embodiment of a serializer/deserializer SERDES interface testing system according to the present application. As shown in fig. 2, the serializer/deserializer SERDES interface testing system provided in this embodiment includes:
the input device, the test conversion assembly, the cabin domain controller and the display screen are connected in sequence;
the input device is used for acquiring display attribute information from the test conversion assembly before inputting an image signal to the test conversion assembly and sending the image signal to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component;
the test conversion component is used for converting the image signal sent by the input device into a serial SERDES signal supported by the cabin domain controller;
the cockpit area controller is used for converting the serial SERDES signals into parallel image signals and transmitting the image signals to the display screen;
the display screen is used for displaying the image signals.
In particular, the input device may be, for example, a personal computer PC as an input of video and/or images for replacing the front/rear/left/right camera input of the conventional scheme.
Because the test conversion assembly cannot be directly docked with the input device, for example, the input device cannot directly send image signals to the test conversion assembly through interfaces such as a high-definition multimedia interface (High Definition Multimedia Interface, HDMI), the test conversion assembly is used for storing display attribute information, and the display attribute information is used for holding hands between the input device and the test conversion assembly. In one embodiment, the display attribute information is specifically extended display identification data (Extended Display Identification Data, EDID) to enable data interfacing of the input device with the test conversion assembly.
For example, the test conversion module supports signal input of a digital video interface (Digital Visual Interface, DVI) 1920×1080, and EDID information of DVI 1920×1080 is written in the test conversion module, that is, a data format of DVI 1920×1080 is written in the test conversion module.
For the input device, the EDID information read into the test conversion assembly is inserted into the input device as a corresponding device, and the data stream of the image signal sent by the input device is switched to a corresponding data format, so that the test conversion assembly can identify the data.
In one embodiment, the image signal input by the input device is a TMDS data stream for minimizing transmission differential signals.
And a test conversion module for converting the image signal inputted from the input device into a serial SERDES signal supported by the cockpit controller, such as Gigabit Video InterFace (GVGF) signal, FPDLINK, etc., and for replacing the autopilot controller of the conventional scheme.
And the intelligent cabin domain controller converts the serial SERDES signals into image signals which can be recognized by the display screen.
The display screen is used for displaying image signals, i.e. video and/or images input by the input device.
Wherein the EDID may be stored in a binary file format, representing the relevant information of the device, and the supported data format; the usual EDID information is typically stored in a read-only memory (e.g. E2 PROM) chip.
Furthermore, different SERDES interfaces support different formats of the input video/image data stream, and the formats of the data stream can be virtualized into different EDID; the entire SERDES interface test system is available as long as the corresponding EDID is stored in the test conversion component.
The system of the present embodiment includes: the input device, the test conversion assembly, the cabin domain controller and the display screen are connected in sequence; the input device is used for acquiring display attribute information from the test conversion assembly and sending an image signal to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component; the input device is used for handshaking with the test conversion assembly by acquiring display attribute information from the test conversion assembly, then the input device is used for sending an image signal to the test conversion assembly, the test conversion assembly is used for converting the image signal into a serial SERDES signal, and the serial SERDES signal is converted into the image signal by the cockpit domain controller, so that the image signal is displayed through the display screen, and the test verification of the SERDES interface of the cockpit domain controller is completed.
In one embodiment, as shown in fig. 3 and 5, the test conversion assembly includes: the input ends of the memory and the serializer are respectively connected with the input device, and the output end of the serializer is connected with the cabin controller;
the memory is used for storing display attribute information;
the serializer is used for converting the image signals input by the input device into serial SERDES signals.
Specifically, since the serializer in the test conversion assembly cannot be directly docked with the input device, for example, the input device cannot directly send an image signal to the serializer through interfaces such as an HDMI (high definition multimedia interface), the memory in the test conversion assembly is used for storing display attribute information, and the display attribute information is used for the input device to handshake with the test conversion assembly.
For the input device, display attribute information, for example, stored in the form of EDID information, in the memory of the test conversion assembly is read through an interface with the memory; the input device is inserted as a corresponding device, and the HDMI data stream of the input device is switched to the corresponding data format so that the serializer can recognize.
Wherein the serializer converts the parallel image signals into serial SERDES signals.
In one embodiment, the memory is a charged erasable programmable read-only memory (Electrically Erasable Programmable read only memory, EEPROM).
In one embodiment, the input device is connected to the memory through an integrated circuit bus I2C; I2C is used to transport the control stream.
In an embodiment, the input device is connected to the serializer through a high definition multimedia interface HDMI.
In the above embodiment, the input device is configured to obtain display attribute information from the memory of the test conversion component, and send an image signal to the serializer of the test conversion component according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component; that is, the input device transmits the image data in the serializer supporting format by acquiring display attribute information from the memory of the test conversion assembly to handshake with the serializer of the test conversion assembly.
In an embodiment, as shown in fig. 4 and 5, the cabin domain controller includes: cabin domain chip and deserializer; the input end of the deserializer is connected with the output end of the serializer, the output end of the deserializer is connected with the input end of the intelligent cabin area chip, and the output end of the cabin area chip is connected with the display screen;
wherein the deserializer is configured to convert the serial SERDES signal into parallel image signals;
the cabin domain chip is used for analyzing the parallel image signals and transmitting the analyzed image signals to the display screen.
In particular, the deserializer converts a serial SERDES signal into parallel video/image data.
The cabin domain chip is, for example, a cabin SOC, analyzes the image signal transmitted by the deserializer, and outputs the image signal to the display screen.
The interface between the deserializer and the serializer is a SERDES interface.
As shown in fig. 5, the input device obtains display attribute information from the memory through the I2C, and sends TMDS data stream to the serializer through the HDMI according to the display attribute information, the serializer converts the data stream into serial SERDES signals, and sends the serial SERDES signals to the deserializer, the deserializer converts the serial SERDES signals into parallel image signals, and sends the parallel image signals to the cabin SOC, and analyzes the parallel image signals transmitted by the deserializer, and outputs the parallel image signals to the display screen, and the display screen displays the image signals.
In the above embodiment, for different SERDES interfaces, only the display attribute information in the test conversion component needs to be changed, where the display attribute information includes a data format supported by the SERDES interface, and the serializer deserializer chip is updated, so that decoupling of the cabin domain controller and other domain controllers is achieved.
In one embodiment, as shown in fig. 6, the test conversion assembly further comprises: the high-definition multimedia interface HDMI decoy, the memory sets up in the HDMI decoy, the one end of HDMI decoy with input device is connected, the other end of HDMI decoy with the serializer is connected.
Specifically, the test conversion assembly may include: an HDMI spoofer and serializer;
the memory is integrated on the HDMI spoofer for storing EDID information in a serializer support format.
The HDMI spoofer male end is plugged directly into the HDMI interface of the input device.
The HDMI decoy female end is connected with the circuit board of the serializer through an HDMI wire harness.
In the above embodiment, since the test conversion assembly cannot be directly docked with the input device, the input device cannot directly send the image signal to the test conversion assembly through the high-definition multimedia interface (High Definition Multimedia Interface, HDMI), the input device is linked with the serializer of the test conversion assembly through the HDMI spoofer, the memory of the test conversion assembly is used for storing the display attribute information, and the display attribute information is used for holding the input device and the test conversion assembly, so that the implementation mode is simple and the cost is low.
In one embodiment, as shown in fig. 7, the overall flow of the SERDES interface test is as follows:
step 1-1, an E2PROM of an HDMI decoy burns EDID information in a data format supported by a serializer;
wherein, step 1-1 is a preparation process before testing.
Step 2-1, inserting the HDMI decoy into a PC;
step 2-2, connecting an HDMI decoy with a serializer circuit board through an HDMI wire harness;
step 2-3, connecting the serial circuit board and the cabin controller by the SERDES wire harness;
step 2-1 to step 2-3 are the process of setting up a test environment;
step 3-1, powering up a test environment;
step 3-2, performing display setting by the PC end, namely, after the HDMI decoy is inserted, newly adding a display device, and setting 'expanding the displays';
and 3-3, synchronously displaying test video/images of the PC on the display screen.
Step 3-1 to step 3-3 are test procedures.
Compared with a camera and an automatic driving domain controller, the SERDES interface test system provided by the embodiment of the application has the advantages that the price is greatly reduced, and the environment is more convenient to build; and the decoupling of the autopilot domain controller and the intelligent cabin domain controller can be realized; by exchanging the image data in the input device, verification of the SERDES interface can be accomplished. For different SERDES interface chips and different autopilot domain controllers, only display attribute information (representing data formats supported by different SERDES interfaces) stored in the test conversion component is required to be changed, and the serializer deserializer chip is updated, so that a modularized test system is realized.
Fig. 8 is a flowchart of an embodiment of an interface testing method according to the present application. As shown in fig. 8, the method provided in this embodiment is applied to the SERDES interface test system described in any one of the foregoing embodiments, and the method includes:
step 101, acquiring display attribute information from a test conversion assembly, and sending an image signal to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component;
step 102, converting an image signal sent by an input device into a serial SERDES signal supported by a cabin domain controller;
step 103, converting the serial SERDES signal into parallel image signals and displaying the image signals.
Specifically, since the test conversion assembly cannot be directly docked with the input device, the test conversion assembly is used for storing display attribute information, and the display attribute information is used for the input device to handshake with the test conversion assembly.
For example, the test conversion module supports signal input of a digital video interface (Digital Visual Interface, DVI) 1920×1080, and EDID information of DVI 1920×1080 is written in the test conversion module, that is, a data format of DVI 1920×1080 is written in the test conversion module.
For the input device, the EDID information in the test conversion assembly is read, the input device is inserted as a corresponding device, and the data stream of the image signal sent by the input device is switched to a corresponding data format, so that the test conversion assembly can be identified, and the image signal is sent to the test conversion assembly.
Further converting the image signal sent by the input device into a serial SERDES signal supported by the cabin domain controller through a test conversion component; the serial SERDES signals are converted into parallel image signals through the cockpit domain controller, and the image signals are displayed through the display screen, so that the test verification of the SERDES interface of the cockpit domain controller is completed.
In one possible implementation manner, the converting the image signal sent by the input device into a serial SERDES signal supported by the cabin domain controller includes:
the image signal input by the input device is converted into the serial SERDES signal by a serializer.
In one possible implementation, the converting the serial SERDES signal into a parallel image signal includes:
converting the serial SERDES signal into parallel image signals by the deserializer;
and analyzing the parallel image signals through the cabin domain chip, and transmitting the analyzed image signals to the display screen.
The method of this embodiment has similar principle and technical effects to those of the above test system embodiment, and will not be repeated here.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. A serializer/deserializer SERDES interface test system, comprising:
the input device, the test conversion assembly, the cabin domain controller and the display screen are connected in sequence;
the input device is used for acquiring display attribute information from the test conversion assembly and sending an image signal to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component;
the test conversion component is used for converting the image signal sent by the input device into a serial SERDES signal supported by the cabin domain controller;
the cockpit area controller is used for converting the serial SERDES signals into parallel image signals and transmitting the image signals to the display screen;
the display screen is used for displaying the image signals;
the test conversion assembly includes: the input ends of the memory and the serializer are respectively connected with the input device, and the output end of the serializer is connected with the cabin controller;
the memory is used for storing the display attribute information;
the serializer is used for converting the image signals input by the input device into serial SERDES signals;
the cabin domain controller includes: cabin domain chip and deserializer; the input end of the deserializer is connected with the output end of the serializer, the output end of the deserializer is connected with the input end of the cabin area chip, and the output end of the cabin area chip is connected with the display screen;
wherein the deserializer is configured to convert the serial SERDES signal into parallel image signals;
the cabin domain chip is used for analyzing the parallel image signals and transmitting the analyzed image signals to the display screen.
2. The system of claim 1, wherein the test conversion assembly further comprises: the high-definition multimedia interface HDMI decoy, the memory sets up in the HDMI decoy, the one end of HDMI decoy with input device is connected, the other end of HDMI decoy with the serializer is connected.
3. The system of claim 2, wherein one end of the HDMI spoofer is connected to the serializer via an HDMI line.
4. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
the image signal inputted by the input device is TMDS data stream for minimizing transmission differential signals.
5. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
the input device is connected with the memory through an integrated circuit bus I2C;
the input device is connected with the serializer through a high definition multimedia interface HDMI.
6. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
the memory is an electrically erasable programmable read-only memory EEPROM.
7. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
the display attribute information is extended display identification data EDID.
8. An interface testing method, applied to the system of any one of claims 1-7, comprising:
acquiring display attribute information from the test conversion assembly, and sending an image signal to the test conversion assembly according to the display attribute information; the display attribute information comprises a data format supported by the test conversion component;
converting the image signal sent by the input device into a serial SERDES signal supported by the cabin domain controller;
the serial SERDES signal is converted into parallel image signals and the image signals are displayed.
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