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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;xozhao&nbsp;(XO),&nbsp;信区:&nbsp;DSP<br>标&nbsp;&nbsp;题:&nbsp;谈谈其他DSP(1)Motorola<br>发信站:&nbsp;饮水思源站&nbsp;(Sat&nbsp;Jun&nbsp;19&nbsp;12:48:38&nbsp;1999)&nbsp;,&nbsp;转信<br>其他公司的DSP也是各有特色的嘛,<br>Motorola&nbsp;的24位运算宽度使你不在为精度不够而烦恼<br><br>DSP56001:<br>主频:&nbsp;20.5,&nbsp;27,&nbsp;or&nbsp;33&nbsp;MHz<br>位数:&nbsp;24-bit&nbsp;fixed&nbsp;point&nbsp;DSP<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24&nbsp;bit&nbsp;data&nbsp;bus,&nbsp;16&nbsp;bit&nbsp;address&nbsp;bus,&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56&nbsp;bit&nbsp;accumulators&nbsp;(2)<br>外设:&nbsp;host&nbsp;interface&nbsp;port,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;serial&nbsp;ports&nbsp;(2),&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;general&nbsp;purpose&nbsp;I/O&nbsp;pins,&nbsp;timer.<br>内存:&nbsp;Harvard&nbsp;architecture.&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;512&nbsp;words&nbsp;program&nbsp;RAM,&nbsp;32&nbsp;words&nbsp;bootstrap&nbsp;ROM,&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;512&nbsp;words&nbsp;data&nbsp;RAM,&nbsp;512&nbsp;words&nbsp;data&nbsp;ROM&nbsp;on&nbsp;chip.&nbsp;&nbsp;<br>封装:&nbsp;PGA,&nbsp;CQFP&nbsp;or&nbsp;PQFP&nbsp;packaging.<br><br>DSP56000:&nbsp;<br>Mask-programmed&nbsp;version&nbsp;of&nbsp;DSP56001,&nbsp;same&nbsp;peripherals&nbsp;and<br>data&nbsp;memories,&nbsp;3.75k&nbsp;words&nbsp;program&nbsp;ROM&nbsp;on&nbsp;chip.<br><br>DSP56002:<br>特点:---&nbsp;based&nbsp;on&nbsp;new&nbsp;24-bit&nbsp;DSP56k&nbsp;core<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;---&nbsp;a&nbsp;superset&nbsp;of&nbsp;the&nbsp;DSP56001&nbsp;architecture<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;---&nbsp;with&nbsp;On-Chip&nbsp;Emulation&nbsp;(OnCE)&nbsp;debug&nbsp;port,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;---&nbsp;clock&nbsp;PLL&nbsp;and&nbsp;improved&nbsp;bus&nbsp;arbitration<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;---&nbsp;four&nbsp;cycle&nbsp;double&nbsp;precision&nbsp;multiply<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;---&nbsp;support&nbsp;for&nbsp;block&nbsp;floating&nbsp;point<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;---&nbsp;Same&nbsp;memory&nbsp;as&nbsp;in&nbsp;DSP56001,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;except&nbsp;for&nbsp;64&nbsp;words&nbsp;bootstrap&nbsp;ROM.&nbsp;&nbsp;<br><br>主频:&nbsp;40MHz<br>外设:&nbsp;Host&nbsp;interface&nbsp;port<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;serial&nbsp;ports&nbsp;(2),<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;general&nbsp;purpose&nbsp;I/O&nbsp;pins,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;programmable&nbsp;24-bit&nbsp;timer,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;non-maskable&nbsp;interrupt<br>封装:&nbsp;PGA&nbsp;and&nbsp;CQFP&nbsp;packaging.<br><br>DSP56L002:<br>Low-power&nbsp;version&nbsp;of&nbsp;the&nbsp;DSP56002&nbsp;offering&nbsp;identical<br>performance&nbsp;as&nbsp;the&nbsp;DSP56002&nbsp;but&nbsp;at&nbsp;3.3V.<br>封装:&nbsp;PQFP.<br><br>DSP56004:<br>特点:&nbsp;modular&nbsp;DSP,&nbsp;same&nbsp;24-bit&nbsp;DSP56k&nbsp;core&nbsp;as&nbsp;in&nbsp;DSP56002.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Targeted&nbsp;to&nbsp;consumer&nbsp;digital&nbsp;audio&nbsp;applications<br>外设:&nbsp;On-Chip&nbsp;Emulation&nbsp;(OnCE)&nbsp;debug&nbsp;port<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;clock&nbsp;PLL,&nbsp;serial&nbsp;host&nbsp;interface&nbsp;(I2C&nbsp;and&nbsp;SPI)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;four&nbsp;general&nbsp;purpose&nbsp;I/O&nbsp;pins,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;two&nbsp;stereo&nbsp;serial&nbsp;audio&nbsp;receivers&nbsp;(I2S/Sony)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;three&nbsp;stereo&nbsp;serial&nbsp;audio&nbsp;transmitters&nbsp;(I2S/Sony)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;external&nbsp;SRAM/DRAM&nbsp;memory&nbsp;interface&nbsp;with&nbsp;8-bit&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;data&nbsp;bus.<br>主频:&nbsp;40&nbsp;MHz&nbsp;(5V&nbsp;supply)&nbsp;in&nbsp;80-pin&nbsp;QFP&nbsp;package.<br><br>DSP96002:<br>核:&nbsp;&nbsp;IEEE&nbsp;format&nbsp;floating&nbsp;point&nbsp;DSP;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;two&nbsp;complete&nbsp;32&nbsp;bit&nbsp;data&nbsp;and&nbsp;address&nbsp;buses;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Harvard&nbsp;architecture.&nbsp;<br>内存:1k&nbsp;words&nbsp;program&nbsp;RAM,<br>&nbsp;&nbsp;&nbsp;&nbsp;64&nbsp;words&nbsp;bootstrap&nbsp;ROM,<br>&nbsp;&nbsp;&nbsp;&nbsp;1k&nbsp;words&nbsp;data&nbsp;RAM,&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;1k&nbsp;words&nbsp;data&nbsp;ROM,<br>主频:&nbsp;&nbsp;Available&nbsp;in&nbsp;33&nbsp;MHz&nbsp;or&nbsp;40&nbsp;MHz<br>封装:&nbsp;223-pin&nbsp;PGA&nbsp;packaging.<br>--<br>※&nbsp;来源:·饮水思源站&nbsp;bbs.sjtu.edu.cn·[FROM:&nbsp;www-post@bbs]<br></tr></table><br><caption align=bottom><hr><table align=center cellspacing=1 class=foot><tr><td class=foot><a href="a-2.htm">返回</tr></table><p class=copyr align=center>Copyright &copy; 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