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<html><head><title>饮水思源精华区</title><Content-type: text/html; charset=gb2312><link rel=stylesheet type=text/css href="bbsdl.css"></head><table cellspacing=0 class=title width=90%><th class=title align=left width=20%>饮水思源站</th><th class=title align=center width=60%>文章阅读</th><th class=title align=right width=20%>精华区离线浏览</th></tr></table><hr><table align=center cellspacing=1 class=doc><tr><td>发信人:&nbsp;fangf&nbsp;(方方),&nbsp;信区:&nbsp;DSP<br>标&nbsp;&nbsp;题:&nbsp;高速实时数字信号处理技术探析(五)<br>发信站:&nbsp;饮水思源站&nbsp;(Mon&nbsp;Jun&nbsp;&nbsp;7&nbsp;18:21:18&nbsp;1999)&nbsp;,&nbsp;站内信件<br>----(2)VME&nbsp;总&nbsp;线&nbsp;分&nbsp;析&nbsp;<br><br>&nbsp;&nbsp;<br>&nbsp;&nbsp;----VME&nbsp;为&nbsp;英&nbsp;文Versabus&nbsp;Modular&nbsp;Eurocard&nbsp;的&nbsp;缩&nbsp;写，&nbsp;中&nbsp;译&nbsp;文&nbsp;为Versa<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;总&nbsp;线&nbsp;模&nbsp;块&nbsp;欧&nbsp;式&nbsp;卡。VME&nbsp;总&nbsp;线&nbsp;是&nbsp;一&nbsp;种&nbsp;开&nbsp;放&nbsp;式&nbsp;系&nbsp;统&nbsp;结&nbsp;构，&nbsp;它&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;主&nbsp;要&nbsp;是&nbsp;为&nbsp;微&nbsp;型&nbsp;计&nbsp;算&nbsp;机&nbsp;系&nbsp;统&nbsp;制&nbsp;定&nbsp;的，&nbsp;其&nbsp;实&nbsp;是&nbsp;由Motorola&nbsp;公&nbsp;司&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;制&nbsp;定&nbsp;的Versabus（&nbsp;逻&nbsp;辑、&nbsp;电&nbsp;气&nbsp;特&nbsp;性）&nbsp;和&nbsp;欧&nbsp;洲&nbsp;的Eurocard&nbsp;标&nbsp;准<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;（&nbsp;机&nbsp;械&nbsp;特&nbsp;性）&nbsp;构&nbsp;成&nbsp;的。&nbsp;<br><br>&nbsp;&nbsp;<br>&nbsp;&nbsp;----Versabus&nbsp;总&nbsp;线&nbsp;是Motorola&nbsp;公&nbsp;司&nbsp;于1979&nbsp;年&nbsp;针&nbsp;对&nbsp;其68000&nbsp;微&nbsp;处&nbsp;理&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;器&nbsp;定&nbsp;义&nbsp;的，&nbsp;因&nbsp;此VME&nbsp;总&nbsp;线&nbsp;接&nbsp;口&nbsp;在&nbsp;电&nbsp;气&nbsp;和&nbsp;逻&nbsp;辑&nbsp;上&nbsp;类&nbsp;似&nbsp;于68000<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;微&nbsp;处&nbsp;理&nbsp;器。&nbsp;不&nbsp;过&nbsp;它&nbsp;只&nbsp;作&nbsp;概&nbsp;括&nbsp;性&nbsp;的&nbsp;规&nbsp;定，&nbsp;并&nbsp;不&nbsp;涉&nbsp;及&nbsp;或&nbsp;规&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;定&nbsp;任&nbsp;何&nbsp;特&nbsp;定&nbsp;的&nbsp;微&nbsp;处&nbsp;理&nbsp;器。&nbsp;自1981&nbsp;年10&nbsp;月Motorola，Mostek&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;和Signetics&nbsp;公&nbsp;布&nbsp;第&nbsp;一&nbsp;版&nbsp;本A&nbsp;以&nbsp;来，&nbsp;几&nbsp;经&nbsp;修&nbsp;改&nbsp;和&nbsp;完&nbsp;善，&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;于1987&nbsp;年VME&nbsp;获ANSI（&nbsp;美&nbsp;国&nbsp;国&nbsp;家&nbsp;标&nbsp;准&nbsp;局）/IEEE&nbsp;的&nbsp;认&nbsp;可，&nbsp;并&nbsp;正<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;式&nbsp;宣&nbsp;布&nbsp;其&nbsp;为&nbsp;微&nbsp;处&nbsp;理&nbsp;器&nbsp;标&nbsp;准。&nbsp;<br><br>&nbsp;&nbsp;<br>&nbsp;&nbsp;----VME&nbsp;总&nbsp;线&nbsp;的&nbsp;开&nbsp;放&nbsp;性&nbsp;及&nbsp;其&nbsp;优&nbsp;良&nbsp;的&nbsp;机&nbsp;械&nbsp;特&nbsp;性，&nbsp;赢&nbsp;得&nbsp;了&nbsp;广<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;泛&nbsp;市&nbsp;场。&nbsp;众&nbsp;多&nbsp;厂&nbsp;商&nbsp;开&nbsp;发&nbsp;出&nbsp;了&nbsp;用&nbsp;于&nbsp;工&nbsp;业&nbsp;控&nbsp;制、&nbsp;远&nbsp;程&nbsp;通&nbsp;讯<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;和&nbsp;仪&nbsp;器&nbsp;仪&nbsp;表&nbsp;等&nbsp;领&nbsp;域&nbsp;的&nbsp;成&nbsp;千&nbsp;上&nbsp;万&nbsp;种VME&nbsp;总&nbsp;线&nbsp;插&nbsp;件&nbsp;产&nbsp;品。<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;VME&nbsp;总&nbsp;线&nbsp;支&nbsp;持&nbsp;多&nbsp;处&nbsp;理&nbsp;器&nbsp;系&nbsp;统，&nbsp;地&nbsp;址&nbsp;总&nbsp;线32&nbsp;位，&nbsp;数&nbsp;据&nbsp;总&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;线32&nbsp;位（&nbsp;最&nbsp;高64&nbsp;位）；&nbsp;能&nbsp;处&nbsp;理7&nbsp;级&nbsp;中&nbsp;断，&nbsp;具&nbsp;有&nbsp;总&nbsp;线&nbsp;仲&nbsp;裁&nbsp;能&nbsp;力<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;。V&nbsp;ME&nbsp;数&nbsp;据&nbsp;传&nbsp;输&nbsp;总&nbsp;线&nbsp;为&nbsp;高&nbsp;速&nbsp;异&nbsp;步&nbsp;并&nbsp;行&nbsp;的，&nbsp;理&nbsp;论&nbsp;上&nbsp;数&nbsp;据&nbsp;传&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;输&nbsp;速&nbsp;率&nbsp;可&nbsp;达40Mbytes/s；&nbsp;实&nbsp;际&nbsp;为20Mbytes&nbsp;/s&nbsp;左&nbsp;右。&nbsp;<br><br>&nbsp;&nbsp;<br>&nbsp;&nbsp;----VME&nbsp;规&nbsp;范&nbsp;允&nbsp;许&nbsp;最&nbsp;多&nbsp;可&nbsp;容&nbsp;纳21&nbsp;块&nbsp;插&nbsp;件。VME&nbsp;总&nbsp;线&nbsp;插&nbsp;件&nbsp;分&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;为：A&nbsp;型100&nbsp;×160mm（&nbsp;单&nbsp;高）；B&nbsp;型&nbsp;233&nbsp;×160mm（&nbsp;双&nbsp;高）。<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;A&nbsp;型&nbsp;的96&nbsp;根&nbsp;引&nbsp;脚&nbsp;连&nbsp;接&nbsp;器&nbsp;称P1&nbsp;连&nbsp;接&nbsp;器，P1&nbsp;由3&nbsp;列32&nbsp;根&nbsp;引&nbsp;脚<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;构&nbsp;成。B&nbsp;型&nbsp;带&nbsp;有&nbsp;一&nbsp;个P1&nbsp;和P2&nbsp;连&nbsp;接&nbsp;器，P2&nbsp;的&nbsp;引&nbsp;脚&nbsp;和&nbsp;外&nbsp;形&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;与P1&nbsp;相&nbsp;同。&nbsp;主&nbsp;要&nbsp;总&nbsp;线&nbsp;分&nbsp;布&nbsp;如&nbsp;下：&nbsp;<br><br>&nbsp;&nbsp;<br>&nbsp;&nbsp;----(a)P1：&nbsp;24&nbsp;位&nbsp;地&nbsp;址&nbsp;线A1&nbsp;～A23；16&nbsp;位&nbsp;数&nbsp;据&nbsp;线D00&nbsp;～D15；&nbsp;地&nbsp;址<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;修&nbsp;改&nbsp;码AM0&nbsp;～AM5；&nbsp;握&nbsp;手、&nbsp;仲&nbsp;裁、&nbsp;中&nbsp;断&nbsp;和&nbsp;电&nbsp;源（&nbsp;＋5、(12v）<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;等&nbsp;信&nbsp;号。&nbsp;<br><br>&nbsp;&nbsp;<br>&nbsp;&nbsp;----(b)P2：&nbsp;地&nbsp;址&nbsp;线A24&nbsp;～A31；&nbsp;数&nbsp;据&nbsp;线D16&nbsp;～D31&nbsp;等&nbsp;等。&nbsp;<br>&nbsp;&nbsp;<br>&nbsp;&nbsp;<br>--<br>-----------------------------------------------<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;因一个词的力量<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;我重新开始生活<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;我生来就认识你<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;要把你称作<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;自由<br><br>※&nbsp;来源:·饮水思源站&nbsp;bbs.sjtu.edu.cn·[FROM:&nbsp;202.120.8.3]<br></tr></table><br><caption 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