JPS57162199A - Scan out system - Google Patents

Scan out system

Info

Publication number
JPS57162199A
JPS57162199A JP56047103A JP4710381A JPS57162199A JP S57162199 A JPS57162199 A JP S57162199A JP 56047103 A JP56047103 A JP 56047103A JP 4710381 A JP4710381 A JP 4710381A JP S57162199 A JPS57162199 A JP S57162199A
Authority
JP
Japan
Prior art keywords
circuit
address register
scanning
scan out
bits
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
JP56047103A
Other languages
Japanese (ja)
Inventor
Hidekiyo Ozawa
Nobuyuki Kikuchi
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 JP56047103A priority Critical patent/JPS57162199A/en
Publication of JPS57162199A publication Critical patent/JPS57162199A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
    • G11C29/08—Functional testing, e.g. testing during refresh, power-on self testing [POST] or distributed testing

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To switch an address register to a scanning address register when a clock is stopped and to scan out the contents of a memory circuit by providing a selecting circuit to the address register of the storage circuit. CONSTITUTION:When a clock is stopped and scan out permitting signal is outputted or a check stop signal is inputted, and AND circuit 10 starts a selecting circuit 7 and changes readout/write address register 6 in normal status to a scanning address register 5 indicating a scanning address. A storage circuit 11 inputs the information of M bits in a multiplexer circuit 12 in the same manner as the normal status on the basis of the instruction of the address register 5. The multiplexer circuit 12 scans out the information successively by a signal specifying the bits of the scanning address.
JP56047103A 1981-03-30 1981-03-30 Scan out system Pending JPS57162199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56047103A JPS57162199A (en) 1981-03-30 1981-03-30 Scan out system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56047103A JPS57162199A (en) 1981-03-30 1981-03-30 Scan out system

Publications (1)

Publication Number Publication Date
JPS57162199A true JPS57162199A (en) 1982-10-05

Family

ID=12765836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56047103A Pending JPS57162199A (en) 1981-03-30 1981-03-30 Scan out system

Country Status (1)

Country Link
JP (1) JPS57162199A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314777B2 (en) * 1974-08-23 1978-05-19
JPS545351A (en) * 1977-06-14 1979-01-16 Mitsubishi Electric Corp Control unit
JPS5489454A (en) * 1977-12-27 1979-07-16 Fujitsu Ltd Conditional logout control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314777B2 (en) * 1974-08-23 1978-05-19
JPS545351A (en) * 1977-06-14 1979-01-16 Mitsubishi Electric Corp Control unit
JPS5489454A (en) * 1977-12-27 1979-07-16 Fujitsu Ltd Conditional logout control system

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