JPS5611369A - Diagnostic system of lsi - Google Patents

Diagnostic system of lsi

Info

Publication number
JPS5611369A
JPS5611369A JP8669279A JP8669279A JPS5611369A JP S5611369 A JPS5611369 A JP S5611369A JP 8669279 A JP8669279 A JP 8669279A JP 8669279 A JP8669279 A JP 8669279A JP S5611369 A JPS5611369 A JP S5611369A
Authority
JP
Japan
Prior art keywords
circuit
diagnosis
input
diagnosing
diagnostic information
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
JP8669279A
Other languages
Japanese (ja)
Inventor
Moriyuki Takamura
Kazuo Fujisaki
Makoto Tateishi
Haruki Matsui
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 JP8669279A priority Critical patent/JPS5611369A/en
Publication of JPS5611369A publication Critical patent/JPS5611369A/en
Pending legal-status Critical Current

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  • Tests Of Electronic Circuits (AREA)

Abstract

PURPOSE: To make it possible to perform complete diagnosis in a short time at an arbitrary time, by sealing a diagnosing circuit in the package of an LSI and by making it possible to provide diagnostic information lines so that the number of them is not restricted by I/O terminals.
CONSTITUTION: A material where function circuit 3 and diagnosing circuit 8 are formed on the same chip or plural chips is mounted on the same package 1. When a signal is input to signal terminal 11 for diagnosis, data for diagnosis is input to function circuit 3 through information line 4 for diagnosis and input switching circuit 10 or through diagnostic information line 5. Response data for data for diagnosis is input from function circuit 3 to diagnosing circuit 8 through diagnostic information line 6. Response data is compared with an expected value by diagnosing circuit 8, and the result is output from diagnosing circuit 8 to output terminal 7 through switching circuit 9. Thus, complete diagnosis can be performed in a short time at an arbitrary time.
COPYRIGHT: (C)1981,JPO&Japio
JP8669279A 1979-07-09 1979-07-09 Diagnostic system of lsi Pending JPS5611369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8669279A JPS5611369A (en) 1979-07-09 1979-07-09 Diagnostic system of lsi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8669279A JPS5611369A (en) 1979-07-09 1979-07-09 Diagnostic system of lsi

Publications (1)

Publication Number Publication Date
JPS5611369A true JPS5611369A (en) 1981-02-04

Family

ID=13894012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8669279A Pending JPS5611369A (en) 1979-07-09 1979-07-09 Diagnostic system of lsi

Country Status (1)

Country Link
JP (1) JPS5611369A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080111A1 (en) * 2005-01-27 2006-08-03 Matsushita Electric Industrial Co., Ltd. Semiconductor integrated circuit and system lsi

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080111A1 (en) * 2005-01-27 2006-08-03 Matsushita Electric Industrial Co., Ltd. Semiconductor integrated circuit and system lsi
US7739571B2 (en) 2005-01-27 2010-06-15 Panasonic Corporation Semiconductor integrated circuit and system LSI having a test expected value programming circuit

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