State control signal testing device

Abstract

The invention provides a status control signal testing device which is used for testing the status control signal function of a tested unit. The device comprises a main control unit, a testing unit and a conversion unit, wherein the main control unit is used for setting up a test value for the testing unit or obtaining the test value from the testing unit, comparing the set or obtained test value with the test value fed back by information transmission in the tested unit for consistency and further outputting a test result; the testing unit is used for controlling the working status of the conversion unit and relaying the test value set by the main control unit to the conversion unit or obtaining the test value from the conversion unit and storing the test value; the conversion unit is used for converting the control status signal line to be tested of the tested unit into a bus type interface signal line and receiving or sending out the test value of the tested unit. The testing device provided by the invention can make use of the pin resources of a programmable device effectively and improve production testing efficiency.

Description

technical field [0001] The invention relates to a single-board hardware function test system, in particular to a device for testing whether the function of a state control signal is normal. Background technique [0002] At present, in the field of single-board hardware function testing, the main test board is mainly used to test the signal function of the board under test through the backplane and cables. The functional test of the state control signal on the single board under test is either a loopback self-test of the tested board, or a corresponding functional test by connecting the signal to a programmable device on the test board at the same time. During the loopback test of the tested board, the result after the self-test is output directly; The registers corresponding to the state control signals are set in the test board, and the main test board controls the registers of the programmable logic through the message transmission between the board and the tested board, ...

AI Technical Summary

Problems solved by technology

[0004] The test of the state control signal is a relatively simple but necessary test item with a large quantity. Since the test occupies a lot of pins, but the register resources of the programmable device occupied are relatively small, so a large-capacity programmable device is selected or reduced. The method of testing the number of single boards is not suitable

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