JPS54142951A - Communication control unit - Google Patents

Communication control unit

Info

Publication number
JPS54142951A
JPS54142951A JP5012878A JP5012878A JPS54142951A JP S54142951 A JPS54142951 A JP S54142951A JP 5012878 A JP5012878 A JP 5012878A JP 5012878 A JP5012878 A JP 5012878A JP S54142951 A JPS54142951 A JP S54142951A
Authority
JP
Japan
Prior art keywords
circuit
processor
control unit
communication control
main control
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
JP5012878A
Other languages
Japanese (ja)
Other versions
JPS5723287B2 (en
Inventor
Taketoyo Sawada
Kunio Sato
Shinji Ineshima
Masao Gohara
Tomio Masuda
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 JP5012878A priority Critical patent/JPS54142951A/en
Publication of JPS54142951A publication Critical patent/JPS54142951A/en
Publication of JPS5723287B2 publication Critical patent/JPS5723287B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)
  • Computer And Data Communications (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE: To enhance the maintenance function by enabling the central processor to give a direct access to the main control part via the route different from the normal data transfer route.
CONSTITUTION: The 1st connection control circuit 7 transfers the circuit information supplied from the data transmission circuit plus the circuit information delivered to the data transmission circuit from central processor 2 with every circuit based on the command given from processor 2 and under the control of main control part 6 of the communication control unit. And the 2nd connection control circuit 8 makes the communication control unit give a direct access to the main control part via processor 2. And address selection circuit identifieds whether the start given from processor 2 is for the 1st or 2nd connection control circuit. When the start is for circuit 8, various types of maintenance controls indicated from processor 2 are carried out.
COPYRIGHT: (C)1979,JPO&Japio
JP5012878A 1978-04-28 1978-04-28 Communication control unit Granted JPS54142951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5012878A JPS54142951A (en) 1978-04-28 1978-04-28 Communication control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5012878A JPS54142951A (en) 1978-04-28 1978-04-28 Communication control unit

Publications (2)

Publication Number Publication Date
JPS54142951A true JPS54142951A (en) 1979-11-07
JPS5723287B2 JPS5723287B2 (en) 1982-05-18

Family

ID=12850486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5012878A Granted JPS54142951A (en) 1978-04-28 1978-04-28 Communication control unit

Country Status (1)

Country Link
JP (1) JPS54142951A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57161562A (en) * 1981-03-30 1982-10-05 Fujitsu Ltd Diagnostic system for logical operation circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5361931A (en) * 1976-11-15 1978-06-02 Hitachi Ltd Communication control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5361931A (en) * 1976-11-15 1978-06-02 Hitachi Ltd Communication control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57161562A (en) * 1981-03-30 1982-10-05 Fujitsu Ltd Diagnostic system for logical operation circuit

Also Published As

Publication number Publication date
JPS5723287B2 (en) 1982-05-18

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