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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;如&nbsp;何&nbsp;选&nbsp;择&nbsp;嵌&nbsp;入&nbsp;式&nbsp;微&nbsp;处&nbsp;理&nbsp;器&nbsp;(五)<br>发信站:&nbsp;饮水思源站&nbsp;(Sat&nbsp;Jun&nbsp;&nbsp;5&nbsp;10:52:14&nbsp;1999)&nbsp;,&nbsp;站内信件<br>&nbsp;选&nbsp;择&nbsp;专&nbsp;用&nbsp;的&nbsp;集&nbsp;成&nbsp;化&nbsp;的&nbsp;处&nbsp;理&nbsp;器&nbsp;<br><br>----&nbsp;嵌&nbsp;入&nbsp;式&nbsp;微&nbsp;处&nbsp;理&nbsp;器&nbsp;与&nbsp;通&nbsp;用&nbsp;的&nbsp;微&nbsp;处&nbsp;理&nbsp;器&nbsp;最&nbsp;大&nbsp;的&nbsp;不&nbsp;同&nbsp;就&nbsp;是<br>&nbsp;嵌&nbsp;入&nbsp;式&nbsp;微&nbsp;处&nbsp;理&nbsp;器&nbsp;多&nbsp;数&nbsp;工&nbsp;作&nbsp;在&nbsp;用&nbsp;户&nbsp;自&nbsp;己&nbsp;设&nbsp;计&nbsp;的&nbsp;系&nbsp;统&nbsp;中。&nbsp;<br>为&nbsp;了&nbsp;满&nbsp;足&nbsp;日&nbsp;益&nbsp;高&nbsp;速&nbsp;增&nbsp;长&nbsp;的&nbsp;各&nbsp;类&nbsp;嵌&nbsp;入&nbsp;式&nbsp;系&nbsp;统&nbsp;设&nbsp;计&nbsp;的&nbsp;需&nbsp;求，<br>CPU&nbsp;厂&nbsp;商&nbsp;设&nbsp;计&nbsp;了&nbsp;许&nbsp;多&nbsp;兼&nbsp;有16/32&nbsp;位&nbsp;微&nbsp;处&nbsp;理&nbsp;器&nbsp;并&nbsp;集&nbsp;成&nbsp;了&nbsp;许&nbsp;多&nbsp;<br>外&nbsp;围&nbsp;功&nbsp;能&nbsp;的CPU。&nbsp;根&nbsp;据&nbsp;笔&nbsp;者&nbsp;的&nbsp;经&nbsp;验，&nbsp;这&nbsp;里&nbsp;列&nbsp;举&nbsp;几&nbsp;种&nbsp;在&nbsp;国&nbsp;内&nbsp;<br>外&nbsp;被&nbsp;广&nbsp;为&nbsp;采&nbsp;用&nbsp;的&nbsp;通&nbsp;信&nbsp;用&nbsp;集&nbsp;成&nbsp;化&nbsp;微&nbsp;处&nbsp;理&nbsp;器&nbsp;范&nbsp;例。&nbsp;<br><br>----&nbsp;Motorola&nbsp;68360&nbsp;是&nbsp;一&nbsp;个32&nbsp;位&nbsp;内&nbsp;核（CPU32&nbsp;＋）&nbsp;的&nbsp;集&nbsp;成&nbsp;通&nbsp;信&nbsp;用<br>CPU，&nbsp;除&nbsp;了&nbsp;内&nbsp;建&nbsp;的&nbsp;常&nbsp;规&nbsp;的DMA、DRAM&nbsp;控&nbsp;制、&nbsp;时&nbsp;钟、&nbsp;片&nbsp;选、&nbsp;异&nbsp;步&nbsp;<br>串&nbsp;口、&nbsp;中&nbsp;断&nbsp;等&nbsp;常&nbsp;规&nbsp;微&nbsp;处&nbsp;理&nbsp;器&nbsp;功&nbsp;能&nbsp;外，&nbsp;它&nbsp;最&nbsp;大&nbsp;的&nbsp;特&nbsp;点&nbsp;是&nbsp;集<br>&nbsp;成&nbsp;了&nbsp;一&nbsp;个&nbsp;通&nbsp;信&nbsp;系&nbsp;统，&nbsp;内&nbsp;含4&nbsp;路&nbsp;同&nbsp;步&nbsp;协&nbsp;议&nbsp;的&nbsp;协&nbsp;议&nbsp;通&nbsp;道，&nbsp;可&nbsp;<br>以&nbsp;支&nbsp;持&nbsp;HDLC、T1/E1、ISDN&nbsp;等&nbsp;通&nbsp;信&nbsp;协&nbsp;议。68360&nbsp;还&nbsp;可&nbsp;编&nbsp;程，&nbsp;提&nbsp;供&nbsp;<br>一&nbsp;个10M&nbsp;以&nbsp;太&nbsp;网&nbsp;接&nbsp;口，&nbsp;方&nbsp;便&nbsp;嵌&nbsp;入&nbsp;式&nbsp;系&nbsp;统&nbsp;与&nbsp;网&nbsp;络&nbsp;管&nbsp;理&nbsp;计&nbsp;算&nbsp;<br>机&nbsp;系&nbsp;统&nbsp;的&nbsp;连&nbsp;接。&nbsp;围&nbsp;绕&nbsp;着&nbsp;这&nbsp;类&nbsp;应&nbsp;用，Motorola&nbsp;还&nbsp;有68302&nbsp;—&nbsp;—&nbsp;<br>一&nbsp;个16&nbsp;位&nbsp;的&nbsp;通&nbsp;信&nbsp;用&nbsp;协&nbsp;议&nbsp;处&nbsp;理&nbsp;器&nbsp;和&nbsp;高&nbsp;档&nbsp;的860&nbsp;系&nbsp;列&nbsp;—&nbsp;—PowerPC<br>&nbsp;RISC&nbsp;内&nbsp;置&nbsp;的&nbsp;通&nbsp;信&nbsp;处&nbsp;理&nbsp;器。&nbsp;值&nbsp;得&nbsp;注&nbsp;意&nbsp;的&nbsp;是，AMD&nbsp;公&nbsp;司&nbsp;最&nbsp;近&nbsp;宣&nbsp;<br>布&nbsp;了&nbsp;一&nbsp;种186CC&nbsp;的&nbsp;通&nbsp;信&nbsp;用&nbsp;处&nbsp;理&nbsp;器，&nbsp;内&nbsp;置&nbsp;采&nbsp;用&nbsp;国&nbsp;人&nbsp;熟&nbsp;悉&nbsp;的X86&nbsp;<br>内&nbsp;核&nbsp;和&nbsp;四&nbsp;路&nbsp;HDLC，&nbsp;适&nbsp;合&nbsp;于ISDN&nbsp;路&nbsp;由、&nbsp;通&nbsp;信&nbsp;接&nbsp;入&nbsp;等&nbsp;系&nbsp;统。&nbsp;<br><br><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;202.120.8.11]<br></tr></table><br><caption align=bottom><hr><table align=center cellspacing=1 class=foot><tr><td class=foot><a href="a-3.htm">返回</tr></table><p class=copyr align=center>Copyright &copy; 2001 <a class=copyr href="http://bbs.sjtu.edu.cn">SJTUBBS</a>, All Rights Reserved.<br><br>版权所有<a class=copyr href="telnet://bbs.sjtu.edu.cn">上海交大BBS饮水思源站</a></caption></body></html>
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