Multifunctional bus testing device

Abstract

A multifunctional bus testing device comprises a system processing module, an interface circuit module, an auxiliary circuit module and a power module, the system processing module is composed of an FPGA core circuit, an FPGA control core, a storage circuit, a clock circuit and a configuration circuit, and the functions of receiving, protocol framing, splitting and the like of various bus data are achieved; the interface circuit module comprises a CAN (Controller Area Network) bus, a TLK2711 high-speed bus and an LVDS (Low Voltage Differential Signaling) transmission bus and is used for completing the functions of rate setting, parameter configuration and verification of various buses; the auxiliary circuit module comprises a display circuit and a PHY gigabit network interface circuit, the display circuit is mainly used for displaying a bus protocol data correctness judgment result, and the PHY gigabit network interface circuit is used for receiving external data source data and sending the external data source data to the FPGA control core through a gigabit network port; the power supply module provides various secondary electric signals for the whole system; according to the invention, receiving and sending of various bus protocol data can be realized, protocol unpacking, data interpretation and interpretation result display can be carried out on the received various bus data, good support can be provided for product testing, and the method has the advantages of high efficiency, convenience and rapidness.

Description

technical field [0001] The invention relates to the technical field of data link testing, in particular to a multifunctional bus testing device. Background technique [0002] At present, there are many kinds of general bus test equipment on the market, such as CAN bus, 422 serial port bus, 485 serial port bus and other test equipment, etc., generally only a single bus function, transmission correctness and other performance tests can be completed, which cannot be provided by one device. A variety of bus synchronization test solutions; secondly, there are fewer general-purpose devices for TLK2711 high-speed dedicated protocol data communication testing, and it is difficult to meet the demand scenarios for such bus testing; in addition, it is difficult to test customized requirements for a certain type of data link product. Functional test coverage using generic devices. [0003] Patent application CN205901768U A multi-function bus device testing device, including a main cont...

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Problems solved by technology

[0002] At present, there are many types of bus test equipment commonly used in the market, such as CAN bus, 422 serial bus, 485 serial bus and other test equipment, etc., generally only can complete a single bus function, performance tests such as transmission correctness, and cannot be provided by a single device A solution for synchronous testing of multiple buses; secondly, there are fewer general-purpose devices for TLK2711 high-speed dedicated protocol data communication testing, and it is difficult to meet the demand scenarios for such bus testing; in addition, it is difficult to test the customized requirements for a certain type of data link product Functional test coverage using common devices

[0003] Patent application CN205901768U is a multifunctional bus device testing device, including a main control board, a test button module and an analog indicator board for connecting to the bus device to be tested, which satisfies the test requirements of different bus devices to a certain extent, but it adopts stm32 embedded Type chip, insufficient real-time processing capability, and insufficient test scenarios

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