JPH0390348U - - Google Patents
Info
- Publication number
- JPH0390348U JPH0390348U JP14973789U JP14973789U JPH0390348U JP H0390348 U JPH0390348 U JP H0390348U JP 14973789 U JP14973789 U JP 14973789U JP 14973789 U JP14973789 U JP 14973789U JP H0390348 U JPH0390348 U JP H0390348U
- Authority
- JP
- Japan
- Prior art keywords
- address
- bus slave
- sequencer
- signal
- address signal
- 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
Links
- 238000010586 diagram Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Description
第1図は本考案の一実施例の構成ブロツク図、
第2図は第1図においてアドレスデコーダの構成
を示す図、第3図は第1図においてシーケンサー
の構成を示す図、第4図はシーケンサーの動作状
態を示す遷移図、第5図〜第7図は動作の一例を
示すタイムチヤート、第8図は従来装置の一例を
示す構成ブロツク図、第9図は第8図装置を同期
回路構成とした場合の構成ブロツク図である。
1……アドレスデコーダ、10……デコード部
、11……ゲート回路、4……シーケンサー、5
……RAM、61,62……ドライバ、レシーバ
、BS……パラレルバス。
FIG. 1 is a block diagram of an embodiment of the present invention.
FIG. 2 is a diagram showing the configuration of the address decoder in FIG. 1, FIG. 3 is a diagram showing the configuration of the sequencer in FIG. 1, FIG. 4 is a transition diagram showing the operating state of the sequencer, and FIGS. FIG. 8 is a time chart showing an example of the operation, FIG. 8 is a block diagram showing an example of a conventional device, and FIG. 9 is a block diagram showing the structure of the device shown in FIG. 8 in a synchronous circuit configuration. 1...Address decoder, 10...Decoding section, 11...Gate circuit, 4...Sequencer, 5
...RAM, 61, 62...driver, receiver, BS...parallel bus.
Claims (1)
を検出すると共に、出力アクテイブ条件にアドレ
スストローブ信号を利用したアドレスデコーダと
、 このアドレスデコーダからのアクテイブ信号を
受けて当該アクテイブ信号が所定の時間以上連続
してアクテイブであつた場合にバス・スレーブの
ためのシーケンス動作を開始するシーケンサと を備たバス・スレーブ装置。[Claim for Utility Model Registration] An address decoder which inputs an address signal and detects the address signal addressed to itself and which uses an address strobe signal as an output active condition; a sequencer that starts a sequence operation for the bus slave when the bus slave is continuously active for a predetermined period of time or more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989149737U JP2526047Y2 (en) | 1989-12-26 | 1989-12-26 | Bus slave device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989149737U JP2526047Y2 (en) | 1989-12-26 | 1989-12-26 | Bus slave device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0390348U true JPH0390348U (en) | 1991-09-13 |
JP2526047Y2 JP2526047Y2 (en) | 1997-02-12 |
Family
ID=31696114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989149737U Expired - Lifetime JP2526047Y2 (en) | 1989-12-26 | 1989-12-26 | Bus slave device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2526047Y2 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55140959A (en) * | 1979-04-20 | 1980-11-04 | Hitachi Ltd | Memory control system |
JPS5640939A (en) * | 1979-09-08 | 1981-04-17 | Toshiba Corp | Command flag control circuit |
JPH01219938A (en) * | 1988-02-29 | 1989-09-01 | Nec Corp | Bus trouble detector |
JPH01286061A (en) * | 1988-05-13 | 1989-11-17 | Hitachi Ltd | Bus supervising system |
-
1989
- 1989-12-26 JP JP1989149737U patent/JP2526047Y2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55140959A (en) * | 1979-04-20 | 1980-11-04 | Hitachi Ltd | Memory control system |
JPS5640939A (en) * | 1979-09-08 | 1981-04-17 | Toshiba Corp | Command flag control circuit |
JPH01219938A (en) * | 1988-02-29 | 1989-09-01 | Nec Corp | Bus trouble detector |
JPH01286061A (en) * | 1988-05-13 | 1989-11-17 | Hitachi Ltd | Bus supervising system |
Also Published As
Publication number | Publication date |
---|---|
JP2526047Y2 (en) | 1997-02-12 |