JPS569848A - Automatic test logic unit - Google Patents
Automatic test logic unitInfo
- Publication number
- JPS569848A JPS569848A JP8416379A JP8416379A JPS569848A JP S569848 A JPS569848 A JP S569848A JP 8416379 A JP8416379 A JP 8416379A JP 8416379 A JP8416379 A JP 8416379A JP S569848 A JPS569848 A JP S569848A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- logic
- signal line
- constitution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To improve the function of diagnosing a fault happening to a unit itself and also to make it possible to find the fault in its early stage even when a logic function increases in scale, by making a diagnosis by dividing a logic circuit on a constant scale into individual small-unit logic circuits.
CONSTITUTION: The logic circuit is divided into small-unit logic circuits 201W204 and memory element groups 101W103 are provided among the logic circuits to remember temporarily outputs of circuits 201W203 in a diagnosis. In the circuit constitution to diagnose circuit 203, the output of ROM301 stored with the correct value of circuit 203 propagates through signal line 503 and the output of element group 103 propagates through signal line 504 and is input to dissidence detecting circuit 401 for comparison, the output of which is output to signal line 801 by way of logic circuit 701. Similaly, in the constitution to diagnose circuit 202, dissidence detecting circuit 402 compares the output of ROM302 to that of element group 102 and sends its output from signal line 801 by way of circuit 701.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8416379A JPS569848A (en) | 1979-07-03 | 1979-07-03 | Automatic test logic unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8416379A JPS569848A (en) | 1979-07-03 | 1979-07-03 | Automatic test logic unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS569848A true JPS569848A (en) | 1981-01-31 |
Family
ID=13822819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8416379A Pending JPS569848A (en) | 1979-07-03 | 1979-07-03 | Automatic test logic unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS569848A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6415834A (en) * | 1987-07-10 | 1989-01-19 | Nec Corp | Microcomputer |
-
1979
- 1979-07-03 JP JP8416379A patent/JPS569848A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6415834A (en) * | 1987-07-10 | 1989-01-19 | Nec Corp | Microcomputer |
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