JPS56121121A - Clock distribution system - Google Patents

Clock distribution system

Info

Publication number
JPS56121121A
JPS56121121A JP2459780A JP2459780A JPS56121121A JP S56121121 A JPS56121121 A JP S56121121A JP 2459780 A JP2459780 A JP 2459780A JP 2459780 A JP2459780 A JP 2459780A JP S56121121 A JPS56121121 A JP S56121121A
Authority
JP
Japan
Prior art keywords
clk
memory element
package
memory
signals
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.)
Granted
Application number
JP2459780A
Other languages
Japanese (ja)
Other versions
JPH0135365B2 (en
Inventor
Takashi Ii
Shigeru Mukogasa
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 JP2459780A priority Critical patent/JPS56121121A/en
Publication of JPS56121121A publication Critical patent/JPS56121121A/en
Publication of JPH0135365B2 publication Critical patent/JPH0135365B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE:To diagnose easily a fault due to a memory element in a package containing a logic circuit and the memory element, by providing clock signals for diagnosis. CONSTITUTION:Package 1a is provided with clock signal CLK for original operation and clock signals CLK-1-CLK-6 for fault diagnosis. Then, signals CLK are distributed to logic circuits 2 and 2a, connected mutually to memory part 4a including the memory element and buffer register, by clock distributor 3 via OR gates 11-16. To make a fault diagnosis of package 1a, signals CLK-1-CLK-6 are distributed similarly to respective parts via gates 11-16. Then, the AC function test of the memory element in memory 4a can be done by properly setting the phases of signals CLK-1-CLK-6. In this way, the fault caused by the memory element can easily be diagnosed.
JP2459780A 1980-02-28 1980-02-28 Clock distribution system Granted JPS56121121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2459780A JPS56121121A (en) 1980-02-28 1980-02-28 Clock distribution system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2459780A JPS56121121A (en) 1980-02-28 1980-02-28 Clock distribution system

Publications (2)

Publication Number Publication Date
JPS56121121A true JPS56121121A (en) 1981-09-22
JPH0135365B2 JPH0135365B2 (en) 1989-07-25

Family

ID=12142555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2459780A Granted JPS56121121A (en) 1980-02-28 1980-02-28 Clock distribution system

Country Status (1)

Country Link
JP (1) JPS56121121A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0581144A (en) * 1991-09-25 1993-04-02 Fujitsu Ltd Memory card test method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495545A (en) * 1972-05-02 1974-01-18
JPS4925060A (en) * 1972-04-30 1974-03-06
JPS5490935A (en) * 1977-11-29 1979-07-19 Fujitsu Ltd Test method of electronic parts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925060A (en) * 1972-04-30 1974-03-06
JPS495545A (en) * 1972-05-02 1974-01-18
JPS5490935A (en) * 1977-11-29 1979-07-19 Fujitsu Ltd Test method of electronic parts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0581144A (en) * 1991-09-25 1993-04-02 Fujitsu Ltd Memory card test method

Also Published As

Publication number Publication date
JPH0135365B2 (en) 1989-07-25

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