JPS5661855A - Data transmission device - Google Patents

Data transmission device

Info

Publication number
JPS5661855A
JPS5661855A JP13637879A JP13637879A JPS5661855A JP S5661855 A JPS5661855 A JP S5661855A JP 13637879 A JP13637879 A JP 13637879A JP 13637879 A JP13637879 A JP 13637879A JP S5661855 A JPS5661855 A JP S5661855A
Authority
JP
Japan
Prior art keywords
circuit
switch
microcomputer
data transmission
fault
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
JP13637879A
Other languages
Japanese (ja)
Inventor
Norihiko Sugimoto
Kanman Hamada
Shoichi Furutoku
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13637879A priority Critical patent/JPS5661855A/en
Publication of JPS5661855A publication Critical patent/JPS5661855A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4004—Coupling between buses
    • G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To realize a small-size and high-reliability data transmission circuit, by constituting an inter-link module with several units of the microcomputer, data memories, matrix switches each. CONSTITUTION:When some fault is detected by the fault diagnosis circuit at the matrix switch 60-1 and the transmission control circut 62-1, the switch circuit 64 and the selection circuit 66 are connected to the side of the matrix switch 60-2 via the switch signal 84 and the selection signal 86 each. And furthermore the switch 60-2 and the transmission control circuit 62-2 work. At the same time, the faulty microcomputer 74-1 or the data memory 76-1 are cut off from the bus 82 via the bus switching circuit 72-1 and 72-3 each. And the microcomputer 74-2 or the data memory 76-2 work to avoid the breakdown of the system when a fault occurs. Thus a high-reliability data transmission circuit can be obtained.
JP13637879A 1979-10-24 1979-10-24 Data transmission device Pending JPS5661855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13637879A JPS5661855A (en) 1979-10-24 1979-10-24 Data transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13637879A JPS5661855A (en) 1979-10-24 1979-10-24 Data transmission device

Publications (1)

Publication Number Publication Date
JPS5661855A true JPS5661855A (en) 1981-05-27

Family

ID=15173750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13637879A Pending JPS5661855A (en) 1979-10-24 1979-10-24 Data transmission device

Country Status (1)

Country Link
JP (1) JPS5661855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6386632A (en) * 1986-09-30 1988-04-18 Nec Corp Address filtering method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6386632A (en) * 1986-09-30 1988-04-18 Nec Corp Address filtering method

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