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JPS57187726A - Digital circuit - Google Patents

Digital circuit

Info

Publication number
JPS57187726A
JPS57187726A JP56071718A JP7171881A JPS57187726A JP S57187726 A JPS57187726 A JP S57187726A JP 56071718 A JP56071718 A JP 56071718A JP 7171881 A JP7171881 A JP 7171881A JP S57187726 A JPS57187726 A JP S57187726A
Authority
JP
Japan
Prior art keywords
bus
block
drivers
driven
need
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
JP56071718A
Other languages
Japanese (ja)
Inventor
Shigeru Watari
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56071718A priority Critical patent/JPS57187726A/en
Publication of JPS57187726A publication Critical patent/JPS57187726A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • G06F13/4072—Drivers or receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Bus Control (AREA)

Abstract

PURPOSE:To obtain high-speed signal propagation by dividing a bus which connects numbers of blocks over a long distance, and thus dividing a load capacitance. CONSTITUTION:To transmit and receive a signal to and from a block 3, two- way bus drivers 22 and 24, or 23 and 25 need be made active at once. In this case, loads on a bus 10 are a C1, a C2 and a C3 in total, and those capacitances need be driven. To transmit and receive a signal to and from a block 2, the two- way bus drivers 22 and 23 are activated while the drivers 24 and 25 are made inactive, and the block 3 and the load capacitance C3 of the bus are disconnected. Therefore, bus loads which need be driven are the C1 and C2. For a block 1, the bus drivers 22 and 23, and 24 and 25 are made inactive, and the load capacitances C2 and C3 are disconnected to leave only the capacitance C1 to be driven.
JP56071718A 1981-05-13 1981-05-13 Digital circuit Pending JPS57187726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56071718A JPS57187726A (en) 1981-05-13 1981-05-13 Digital circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56071718A JPS57187726A (en) 1981-05-13 1981-05-13 Digital circuit

Publications (1)

Publication Number Publication Date
JPS57187726A true JPS57187726A (en) 1982-11-18

Family

ID=13468576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56071718A Pending JPS57187726A (en) 1981-05-13 1981-05-13 Digital circuit

Country Status (1)

Country Link
JP (1) JPS57187726A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59223828A (en) * 1983-06-03 1984-12-15 Ascii Corp Extension device for personal computer
FR2605768A1 (en) * 1986-10-23 1988-04-29 Bull Sa BUS CONTROL DEVICE CONSISTING OF SEVERAL ISOLABLE SEGMENTS
JPH0239232A (en) * 1988-07-28 1990-02-08 Hitachi Ltd Data processor
US6081863A (en) * 1998-03-13 2000-06-27 International Business Machines Corporation Method and system for supporting multiple peripheral component interconnect PCI buses by a single PCI host bridge within a computer system
US6448810B1 (en) 1999-01-14 2002-09-10 Nec Corporation Bidirectional bus-repeater controller
GB2432759A (en) * 2005-11-26 2007-05-30 Wolfson Ltd A "pass circuit" divides a bus into two sections; in a first mode signals can pass between the sections, but in a second mode the sections are isolated
JP2009009559A (en) * 2007-05-29 2009-01-15 Schneider Electric Industries Sas Control device for point-to-point communication between transmission bus and module
US7765019B2 (en) 2005-11-26 2010-07-27 Wolfson Microelectronics Plc Portable wireless telephony device
US7885422B2 (en) 2005-11-26 2011-02-08 Wolfson Microelectronics Plc Audio device and method
JP2011165225A (en) * 2010-02-04 2011-08-25 Renesas Electronics Corp Semiconductor storage device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59223828A (en) * 1983-06-03 1984-12-15 Ascii Corp Extension device for personal computer
FR2605768A1 (en) * 1986-10-23 1988-04-29 Bull Sa BUS CONTROL DEVICE CONSISTING OF SEVERAL ISOLABLE SEGMENTS
JPH0239232A (en) * 1988-07-28 1990-02-08 Hitachi Ltd Data processor
US6081863A (en) * 1998-03-13 2000-06-27 International Business Machines Corporation Method and system for supporting multiple peripheral component interconnect PCI buses by a single PCI host bridge within a computer system
US6448810B1 (en) 1999-01-14 2002-09-10 Nec Corporation Bidirectional bus-repeater controller
US8433430B2 (en) 2005-11-26 2013-04-30 Wolfson Microelectronics Plc Cellular wireless telephone and audio codec therefor
US7376778B2 (en) 2005-11-26 2008-05-20 Wolfson Microelectronics Plc Audio device
GB2432759B (en) * 2005-11-26 2008-07-02 Wolfson Ltd Audio device
US7765019B2 (en) 2005-11-26 2010-07-27 Wolfson Microelectronics Plc Portable wireless telephony device
US7885422B2 (en) 2005-11-26 2011-02-08 Wolfson Microelectronics Plc Audio device and method
GB2432759A (en) * 2005-11-26 2007-05-30 Wolfson Ltd A "pass circuit" divides a bus into two sections; in a first mode signals can pass between the sections, but in a second mode the sections are isolated
US8843227B2 (en) 2005-11-26 2014-09-23 Wolfson Microelectronics Plc Wireless cellular telephone with audio codec
US9666197B2 (en) 2005-11-26 2017-05-30 Cirrus Logic, Inc. Wireless cellular telephone with audio codec
US10504526B2 (en) 2005-11-26 2019-12-10 Cirrus Logic, Inc. Wireless cellular telephone with audio codec
JP2009009559A (en) * 2007-05-29 2009-01-15 Schneider Electric Industries Sas Control device for point-to-point communication between transmission bus and module
JP2011165225A (en) * 2010-02-04 2011-08-25 Renesas Electronics Corp Semiconductor storage device

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