JPS6448136A - Trouble detection system - Google Patents

Trouble detection system

Info

Publication number
JPS6448136A
JPS6448136A JP62205423A JP20542387A JPS6448136A JP S6448136 A JPS6448136 A JP S6448136A JP 62205423 A JP62205423 A JP 62205423A JP 20542387 A JP20542387 A JP 20542387A JP S6448136 A JPS6448136 A JP S6448136A
Authority
JP
Japan
Prior art keywords
trouble
lsi
stopped
counter
clock
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
Application number
JP62205423A
Other languages
Japanese (ja)
Inventor
Tetsuo Okamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62205423A priority Critical patent/JPS6448136A/en
Publication of JPS6448136A publication Critical patent/JPS6448136A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To discriminate an LSI of the trouble occurrence source by providing a clock machine which stops update at the time of trouble detection and stopping update also at the time of trouble detection in the other highly integrated circuits constituting a device. CONSTITUTION:Highly integrated circuits LSI 1 and LSI 2 are provided with counters 1 and 2 which simultaneously count a clock (CLK) synchronously with each other. If the counting operation of the counter 1 is stopped by trouble detection in the LSI 1 and the counted value at this time is '00100', pertinent trouble data is propagated to the LSI 2 and trouble is detected similarly, and the counter 2 counts one clock extra and is stopped with counted value '00101' when the counting operation of the counter 2 in the LSI 2 is stopped. Since counting operations of counters 1, 2... in LSIs 1, 2... constituting the device are stopped when a freeze signal is sent from a trouble freezing circuit of the device including LSIs 1, 2... in this state, it is recognized that trouble first occurs in the LSI 1.
JP62205423A 1987-08-19 1987-08-19 Trouble detection system Pending JPS6448136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62205423A JPS6448136A (en) 1987-08-19 1987-08-19 Trouble detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62205423A JPS6448136A (en) 1987-08-19 1987-08-19 Trouble detection system

Publications (1)

Publication Number Publication Date
JPS6448136A true JPS6448136A (en) 1989-02-22

Family

ID=16506601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62205423A Pending JPS6448136A (en) 1987-08-19 1987-08-19 Trouble detection system

Country Status (1)

Country Link
JP (1) JPS6448136A (en)

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