JPS57182819A - Synchronous clock controlling circuit - Google Patents

Synchronous clock controlling circuit

Info

Publication number
JPS57182819A
JPS57182819A JP56068160A JP6816081A JPS57182819A JP S57182819 A JPS57182819 A JP S57182819A JP 56068160 A JP56068160 A JP 56068160A JP 6816081 A JP6816081 A JP 6816081A JP S57182819 A JPS57182819 A JP S57182819A
Authority
JP
Japan
Prior art keywords
clock
clocks
wiring
modules
time
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
JP56068160A
Other languages
Japanese (ja)
Inventor
Kazuhiro Iwata
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56068160A priority Critical patent/JPS57182819A/en
Publication of JPS57182819A publication Critical patent/JPS57182819A/en
Pending 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)
  • Electric Clocks (AREA)

Abstract

PURPOSE:To satisfy always the set-up time and the hold time of circuit elements, by supplying clocks having a prescribed phase difference to each of plural modules and selecting clocks properly. CONSTITUTION:A clock 12 is transmitted from a CPU, which is not shown in a figure, to plural modules l-n (n=3 in the figure) through a gate 4 and a wiring 5. The clock 12 is inputted as clocks 13-15 from gates 6-8. A return part 5 of the wiring 5 is connected to gates 11-9 in order, and the clock 12 is inputted as clocks 18-16. Two kinds of clock having the same period and a phase shift are supplied to each of modules 1-3. The phase shift is adjusted by the pattern length of the wiring 5. Thus, two kinds of clock are used selectively to satisfy the set-up time and the hold time of each circuit elements in case of the transfer between respective modules.
JP56068160A 1981-05-08 1981-05-08 Synchronous clock controlling circuit Pending JPS57182819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56068160A JPS57182819A (en) 1981-05-08 1981-05-08 Synchronous clock controlling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56068160A JPS57182819A (en) 1981-05-08 1981-05-08 Synchronous clock controlling circuit

Publications (1)

Publication Number Publication Date
JPS57182819A true JPS57182819A (en) 1982-11-10

Family

ID=13365722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56068160A Pending JPS57182819A (en) 1981-05-08 1981-05-08 Synchronous clock controlling circuit

Country Status (1)

Country Link
JP (1) JPS57182819A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184027A (en) * 1987-03-20 1993-02-02 Hitachi, Ltd. Clock signal supply system
JPH07121261A (en) * 1993-10-21 1995-05-12 Nec Corp Clock distribution circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5779536A (en) * 1980-10-31 1982-05-18 Nec Corp Signal distributing circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5779536A (en) * 1980-10-31 1982-05-18 Nec Corp Signal distributing circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184027A (en) * 1987-03-20 1993-02-02 Hitachi, Ltd. Clock signal supply system
JPH07121261A (en) * 1993-10-21 1995-05-12 Nec Corp Clock distribution circuit

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