JPS63295979A - Self-diagnostic apparatus for electronic circuit package - Google Patents

Abstract

PURPOSE:To enable the diagnosis of the whole required functions to be executed in terms of an electronic circuit package by outputting a standard output pattern from an output pattern memory as diagnostic output data when diagnostic input data are inputted. CONSTITUTION:Input selector circuits 1-1-1-N conduct an input changeover between an electronic circuit package input signal and diagnostic input data and output selector circuits 2-1-2-N conduct the output changeover of an electronic circuit package corresponding to the input changeover. An input pattern memory 3 stores specific data patterns as the diagnostic input data. An output pattern memory 4 stores in advance standard output data patterns to be outputted from the electronic circuit package as diagnostic output data when the diagnostic input data are inputted. A controller 5 controls the input/output of the electronic circuit package. A reference circuit 6 compares and collates the output of the electronic circuit package due to the diagnostic input data and standard diagnostic output data with each other. When both disagree with each other, the presence of a trouble in the functional portion 10 of the package is judged and a prescribed signal is outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic circuit package self-diagnosis device, and more particularly to an electronic circuit package self-diagnosis device that performs a self-diagnosis test on a single electronic circuit package.

[Conventional technology]

Conventionally, this type of electronic circuit package self-diagnosis device tests only a part of the functions of the electronic circuit package, such as a pseudo-normal test of a memory.

[Problem that the invention seeks to solve]

The conventional electronic circuit package self-diagnosis device described above is controlled by a main processor that specifies the start of a diagnostic test, etc.
Therefore, it is difficult to determine the failure of electronic circuit packages that have functions that cannot be directly controlled by the main processor, and there is a drawback that several packages containing such packages are determined to be failures.

An object of the present invention is to provide an electronic circuit package self-diagnosis device that eliminates the above-mentioned drawbacks, performs diagnostic tests using the input and output of the electronic circuit package, and is capable of performing all necessary functional diagnoses for each electronic circuit package. Our goal is to provide the following.

[Means for solving problems]

The device of the present invention is an electronic circuit package self-diagnosis device, and includes an input and output selector circuit that performs input switching between an electronic circuit package input signal and diagnostic input data, and output switching of the electronic circuit package corresponding to this input switching; an input pattern memory for storing a specific data pattern as the diagnostic input data; and a diagnostic memory for storing a standard output data pattern to be output from the electronic circuit package when the diagnostic input data is input.
an output pattern memory that is stored in advance as output data; a control unit that controls input and output of the electronic circuit package; and a verification circuit that compares and verifies the output of the electronic circuit package based on the diagnostic input data and the diagnostic output data. It is composed of:

〔Example〕

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. The embodiment shown in FIG. 1 includes input selector circuits 1-1 to 1-N that perform input switching between an electronic circuit package input signal and diagnostic input data, and an output selector circuit 2-1 that performs output switching of the electronic circuit package. ~2-N1 Input pattern memory 3 that stores specific data patterns as input data for diagnosis Standard output data pattern that should be output from the electronic circuit package when input data for diagnosis of input pattern memory 3 is input Output pattern memory for storing 4. A control unit 5 that controls input and output of the electronic circuit package. It is equipped with a verification circuit 6 that compares and verifies the output based on the diagnostic input data and the diagnostic output data. In addition, FIG. 1 also shows a package function section 10. Input/output terminals 11-1 to 11-N and 12-1 to 1 of the electronic circuit package
2-N, a failure occurrence display terminal 132, a diagnostic test instruction terminal 14, etc. of the electronic circuit package self-diagnosis device are also shown.

Next, the operation of the self-diagnosis test in the embodiment shown in FIG. 1 will be explained.

Normally, the input selector circuits 1-1 to 1-N are connected to the input terminal 11.
-1 to 11-N are selected and supplied to the package function section 10. In addition, the output selector circuit 2
-1 to 2-N are selectors so that the output of the package function section 10 is sent to output terminals 12-1 to 12-N.

Now, when a diagnostic test instruction is input to the diagnostic test instruction terminal 11, the selector switching control signals 51 and 52 are sent to the input selector circuits 1-1 and 52 under the control of the control section 5 that receives the instruction.
1 to 1-N and output selector circuits 2-1 to 2-N.
~1-N selects the diagnostic input data output from the input cover turn memory 3 and supplies it to the package function section 10, and output selector circuits 2-1 to 2-N check the output signal of the package function section 10. 6.

The input cover turn memory 3 inputs diagnostic input data to the input selector circuit 1- at a specific timing under the control of the control unit 5.
1 to 1-N to the package function section 10.

The output signal 21 of the package function section 10 based on this input is supplied to the verification circuit 6 via the output selector circuits 2-1 to 2-N.

The verification circuit 6 is supplied with diagnostic output data from the output pattern memory 4 under the control of the control unit 5, and the verification circuit 6 collates the input output signal 21 with the diagnostic output data to determine if the two do not match. In the case of package function part 10
A predetermined signal is output to the failure occurrence display terminal 13 indicating that there is a failure.

[Effects of the Invention] As explained above, the present invention is capable of diagnosing all functions by providing a means for performing a diagnostic test between the input and output of an electronic circuit package, and also enables diagnosis of each electronic circuit package. This has the effect of being able to determine faults.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1-1 to 1-N...input selector circuit, 2-1 to 2-
N...Output selector circuit, 3...Input pattern memory, 4...Output pattern memory, 5...Control unit, 6
...Verification circuit, 10...Package function section, 11-
1~11-N...input terminal, 12-1~12-N...
・Output terminal, 13...Fault occurrence display terminal, 14...
Diagnostic test indication terminal.

Claims (1)

[Claims] In an electronic circuit package self-diagnosis device, an input and output selector circuit that performs input switching between an electronic circuit package input signal and diagnostic input data, and output switching of an electronic circuit package corresponding to this input switching, and as the diagnostic input data. an input pattern memory that stores a specific data pattern of the above, and an output pattern memory that stores in advance a standard output data pattern to be output from the electronic circuit package when the diagnostic input data is input as the diagnostic output data; The electronic circuit package itself is equipped with a control section that controls input and output of the electronic circuit package, and a verification circuit that compares and verifies the output based on the diagnostic input data of the electronic circuit package and the diagnostic output data. An electronic circuit package self-diagnosis device characterized by performing a diagnostic test.