BUS COMMUNICATION SYSTEM

To provide a bus communication system suppressing a deteriorated communication speed of the bus communication system having a single-line RZ signal transmission/reception method to enable securing a recessive period.SOLUTION: Each monitor circuit 7, 7a, etc. detects a time from when a signal transmi...

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Bibliographic Details
Main Author IWASAKI TOSHIAKI
Format Patent
LanguageEnglish
Japanese
Published 29.08.2019
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Summary:To provide a bus communication system suppressing a deteriorated communication speed of the bus communication system having a single-line RZ signal transmission/reception method to enable securing a recessive period.SOLUTION: Each monitor circuit 7, 7a, etc. detects a time from when a signal transmission source master 2 or each slave 3a,...3z transmits a signal to a bus N to when the voltage of the bus N becomes a predetermined voltage, or detects the voltage of the bus N at the timing after the lapse of a predetermined time after transmitting the signal to the bus N. Based on the detection result of the monitor circuit 7, 7a, etc., each adjustment circuit 8, 8a, etc. adjusts to raise a slew rate pertaining to a rise delay of the signal transmitted to the bus (t2 or after).SELECTED DRAWING: Figure 6 【課題】1線式のRZ信号送受方式におけるバス通信システムの通信速度の低下を抑制しレセッシブとなる期間を確保できるようにしたバス通信システムを提供する。【解決手段】モニタ回路7,7a等は、信号送出元のマスタ2又はスレーブ3a...3zがバスNに信号を送出してからバスNの電圧が所定電圧になるまでの時間、又は、バスNに信号を送出してから所定時間経過後のタイミングにおけるバスNの電圧、を検出する。調整回路8,8a等は、モニタ回路7,7a等の検出結果に基づいて前記バスに送出される信号の立上り遅延に係るスルーレートを上げるように調整する(t2以降)。【選択図】図6
Bibliography:Application Number: JP20180028737