?? 他人的pci設計經驗 - xnedved的個人空間 - eda中國門戶網站 edacn - powered by x-space.htm
字號:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<!-- saved from url=(0051)http://www.edacn.net/index.php/89161/viewspace-5641 -->
<HTML xmlns="http://www.w3.org/1999/xhtml"><HEAD><TITLE>他人的PCI設計經驗 - xnedved的個人空間 - EDA中國門戶網站 EDACN - powered by X-Space</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gbk">
<META content="PCB FPGA,xilinx,altera,lattice" name=keywords>
<META
content="PCI數據傳輸卡的詳細設計經歷（基于PCI9054）之一去年的時候，接受公司分配的任務，做了一塊PCI數據傳輸卡，作用是把前面板子傳過來的數據上傳到PC機，PC上的應用軟件會進行一些后續的處理。開始的時候也有些茫然 FPGA,xilinx,altera,lattice"
name=description><LINK title=xnedved的個人空間
href="http://www.edacn.net/index.php/89161/action-rss-type-blog.html"
type=application/rss+xml rel=alternate><LINK title=RSD
href="http://www.edacn.net/xmlrpc.php?rsd=89161" type=application/rsd+xml
rel=EditURI><LINK id=commonstyle
href="他人的PCI設計經驗 - xnedved的個人空間 - EDA中國門戶網站 EDACN - powered by X-Space.files/space.css"
type=text/css rel=stylesheet><LINK id=themestyle
href="他人的PCI設計經驗 - xnedved的個人空間 - EDA中國門戶網站 EDACN - powered by X-Space.files/css_89161.cache.css"
type=text/css rel=stylesheet>
<SCRIPT type=text/javascript>
var siteUrl = "http://www.edacn.net";
</SCRIPT>
<SCRIPT language=javascript
src="他人的PCI設計經驗 - xnedved的個人空間 - EDA中國門戶網站 EDACN - powered by X-Space.files/ajax.js"
type=text/javascript></SCRIPT>
<SCRIPT language=javascript
src="他人的PCI設計經驗 - xnedved的個人空間 - EDA中國門戶網站 EDACN - powered by X-Space.files/common.js"
type=text/javascript></SCRIPT>
<META content="MSHTML 6.00.2900.3314" name=GENERATOR></HEAD>
<BODY>
<DIV id=wrap>
<DIV id=header>
<DIV id=spacename>
<DIV id=xspace-spacename><STRONG>xnedved的個人空間</STRONG>
<P><A class=xspace-copyurl title=復制地址
onclick="javascript:setCopy('http://www.edacn.net/?89161');"
href="javascript:;">copy</A> <A class=xspace-add2fav title=加入收藏
onclick="javascript:addBookmark('xnedved的個人空間','http://www.edacn.net/?89161');return false;"
href="http://www.edacn.net/index.php/89161.html">Bookmark</A>
http://www.edacn.net/?89161 </P></DIV></DIV>
<DIV id=menu>
<UL id=xspace-menu>
<LI class=xspace-active><A class=xspace-blog
href="http://www.edacn.net/index.php/89161/spacelist-blog.html">個人專欄</A> </LI>
<LI><A class=xspace-group
href="http://www.edacn.net/index.php/89161/spacelist-group.html">圈子</A> </LI>
<LI><A class=xspace-friend
href="http://www.edacn.net/index.php/89161/spacelist-friend.html">好友</A> </LI>
<LI><A class=xspace-mybbs
href="http://www.edacn.net/index.php/89161/spacelist-bbs.html">專題討論</A> </LI>
<LI><A class=xspace-guestbook
href="http://www.edacn.net/index.php/89161/action-viewpro.html">留言</A>
</LI></UL></DIV></DIV>
<DIV class=xspace-layout1 id=content>
<DIV class=mainarea-side id=mainarea>
<DIV id=xspace-guide><A class=xspace-spacecp
href="http://www.edacn.net/batch.manage.php?uid=89161" target=_blank>空間管理</A>
您的位置: <A href="http://www.edacn.net/" target=_blank>EDA中國門戶網站</A> » <A
href="http://www.edacn.net/index.php/89161/">xnedved的個人空間</A> » <A
href="http://www.edacn.net/index.php/89161/spacelist-blog.html">日志</A> </DIV>
<DIV id=show>
<H1 class=xspace-title>他人的PCI設計經驗</H1>
<P class=xspace-smalltxt><A
href="http://www.edacn.net/batch.common.php?action=viewspace&op=up&itemid=5641&uid=89161">上一篇</A>
/ <A
href="http://www.edacn.net/batch.common.php?action=viewspace&op=next&itemid=5641&uid=89161">下一篇</A>
2007-04-18 16:31:36 / 天氣: 晴朗 / 心情: 高興 </P>
<DIV class=xspace-itemdata><A
href="http://www.edacn.net/index.php/89161/viewspace-5641#xspace-tracks">查看( 204
)</A> / <A
href="http://www.edacn.net/index.php/89161/viewspace-5641#xspace-itemreply">評論(
0 )</A> / <A
href="http://www.edacn.net/index.php/89161/viewspace-5641#xspace-itemform">評分(
<SPAN class=xspace-rategood title=好評>0</SPAN> / <SPAN class=xspace-ratebad
title=差評>0</SPAN> )</A> </DIV>
<DIV class=xspace-itemmessage id=xspace-showmessage>
<DIV class=cnt><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=en><FONT
face="Times New Roman">PCI</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">數據傳輸卡的詳細設計經歷（基于</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI9054</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）之一<BR></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">去年的時候，接受公司分配的任務，做了一塊</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">數據傳輸卡，作用是把前面板子傳過來的數據上傳到</SPAN><SPAN
lang=en><FONT face="Times New Roman">PC</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">機，</SPAN><SPAN
lang=en><FONT face="Times New Roman">PC</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上的應用軟件會進行一些后續的處理。開始</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的時候也有些茫然，因為我以前也沒做過</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">卡，只是對</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">總線的信號大概有所了解。于是開始上網查資料，把別人寫的文章搜了很多下載下來，細細地看。看多了，也有點感覺了，就開始下手做。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=en><FONT
face="Times New Roman">
<P></P></FONT></SPAN>
<P></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">做</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">卡無非是這三步：</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一</SPAN><FONT
face="Times New Roman"></FONT><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">硬件原理圖及</SPAN><SPAN
lang=en><FONT face="Times New Roman"><A href="javascript:;"
onclick="tagshow(event, 'PCB');return false;"><U><STRONG><A
onclick="javascript:tagshow(event, 'PCB');" href="javascript:;"
target=_self><U><STRONG>PCB</STRONG></U></A></STRONG></U></A></FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">布板</SPAN><SPAN
lang=en><SPAN style="mso-spacerun: yes"><FONT
face="Times New Roman"> </FONT></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">二</SPAN><SPAN
lang=en><SPAN style="mso-spacerun: yes"><FONT
face="Times New Roman"> </FONT></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">寫驅動程序</SPAN><SPAN
lang=en><SPAN style="mso-spacerun: yes"><FONT
face="Times New Roman"> </FONT></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">三</SPAN><SPAN
lang=en><SPAN style="mso-spacerun: yes"><FONT
face="Times New Roman"> </FONT></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">寫上層測試程序</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=en><FONT
face="Times New Roman">
<P></P></FONT></SPAN>
<P></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第一步應該算是比較簡單。首先是</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">協議處理芯片的選型?，F在最常用的有兩款：即</SPAN><SPAN
lang=en><FONT face="Times New Roman">PLX</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">公司的</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI9052</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI9054</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。其區別就是</SPAN><SPAN
lang=en><FONT face="Times New Roman">9052</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不支持</SPAN><SPAN
lang=en><FONT face="Times New Roman">DMA</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">傳輸，而</SPAN><SPAN
lang=en><FONT face="Times New Roman">9054</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">支持</SPAN><SPAN
lang=en><FONT face="Times New Roman">DMA</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">傳輸。如果你的應用對帶寬要求較高的話，建議采用</SPAN><SPAN
lang=en><FONT face="Times New Roman">9054</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，這樣比較有把握。如果帶寬要求較低而又想縮減成本的話，</SPAN><SPAN
lang=en><FONT face="Times New Roman">9052</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是個不錯的選擇。這兩種芯片的可參考的設計資料也比較多。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=en><FONT
face="Times New Roman">
<P></P></FONT></SPAN>
<P></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我們的產品對帶寬要求其實并不算高，僅為</SPAN><SPAN
lang=en><FONT face="Times New Roman">10MB/s</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">左右，但考慮到</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">傳輸的效率，謹慎起見，我還是選了</SPAN><SPAN
lang=en><FONT face="Times New Roman">9054</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，這樣帶寬會有比較多的富裕，就算設計當中驅動的效率打點折扣，也還是夠用的。這里明確一下帶寬的問題，如果</SPAN><SPAN
lang=en><FONT face="Times New Roman">PCI</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">總線的速率是</SPAN><SPAN
lang=en><FONT face="Times New Roman">33MHz</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的話，那么它的理論傳輸帶寬就是</SPAN><SPAN
lang=en><FONT face="Times New Roman">33Mx32b=1.056Gb/s</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，如果換算成字節的話，那就是</SPAN><SPAN
lang=en><FONT face="Times New Roman">1.056Gb/8=132MB/s</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。請注意這是理論帶寬，實際設計不會達到的，因為一方面是硬件設計的問題，</SPAN><FONT
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -