JPS6418354U

JPS6418354U -

Info

Publication number: JPS6418354U
Application number: JP11217087U
Authority: JP
Priority date: 1987-07-22
Filing date: 1987-07-22
Publication date: 1989-01-30

Description

[Brief explanation of the drawing]

第１図は本考案に係る共通バスシステムの一実
施例を適用したバスリクエスタを示すブロツク図
、第２図は第１図に示した共通バスを共用してい
るシステムを示すブロツク図、第３図は従来の共
通バスシステムを示すブロツク図である。１ａ〜１ｎ……バスリクエスタ、２……バスマ
スタ、３……共通バス調停回路、４……共通バス
、５ａ〜５ｎ，６ａ〜６ｎ，１１ｂ〜１１ｎ，１
３ａ〜１３ｎ−１……ライン、７……調停部、８
……スイツチ回路、９……アンド回路、１０……
ノツト回路、１２ａ〜１２ｎ−１……プルダウン
抵抗。 FIG. 1 is a block diagram showing a bus requester to which an embodiment of the common bus system according to the present invention is applied, FIG. 2 is a block diagram showing a system sharing the common bus shown in FIG. 1, and FIG. The figure is a block diagram showing a conventional common bus system. 1a to 1n...bus requester, 2...bus master, 3...common bus arbitration circuit, 4...common bus, 5a to 5n, 6a to 6n, 11b to 11n, 1
3a-13n-1...Line, 7...Arbitration Department, 8
...Switch circuit, 9...And circuit, 10...
Knot circuit, 12a to 12n-1...Pull-down resistor.

Claims

[Claims for Utility Model Registration] In a common bus system in which a plurality of bus masters connected to a common bus share the common bus, a plurality of common buses for arbitrating requests for use of the common bus by each of the bus masters. By adding an arbitration circuit to each of the bus masters and transmitting and receiving a signal indicating operation permission and a signal indicating operation between these common bus arbitration circuits, any one of the common bus arbitration circuits A common bus system characterized by allowing arbitration operation.