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<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>A/D</span><span
style='mso-ascii-font-family:"Times New Roman"'>转换器</span><span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<p class=MsoNormal align=center style='text-align:center'><span
style='mso-ascii-font-family:"Times New Roman"'>放大器</span><span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<p class=MsoNormal><span lang=EN-US>16路开入16开出</span></p>
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<p class=MsoNormal align=center style='text-align:center'><span
style='mso-ascii-font-family:"Times New Roman"'>数据缓冲器</span><span
lang=EN-US style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<p class=MsoNormal align=center style='text-align:center'>地址锁存器<span
lang=EN-US style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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width=102 height=30 src="Pci7422.files/image004.gif" alt="文本框: 地址锁存器" v:shapes="_x0000_s2052"></span><![endif]><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='font-family:Arial;
mso-bidi-font-family:"Times New Roman"'><span
style='mso-spacerun:yes'> </span><o:p></o:p></span></b></p>
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<p class=MsoNormal align=center style='text-align:center'>总线控制及译码电路</p>
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<p class=MsoNormal><span lang=EN-US><span
style='mso-spacerun:yes'>
</span>PCI-ISA桥电路</span></p>
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10.0pt;font-family:Arial;mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></p>
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lang=EN-US style='font-size:12.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;
mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></p>
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<br style='mso-ignore:vglayout' clear=ALL>
<h3><span lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>2.
</span><span style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>工作原理简述</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'><o:p></o:p></span></h3>
<p class=MsoNormal style='margin-left:6.0pt'><span lang=EN-US style='font-family:
Arial;mso-bidi-font-family:"Times New Roman"'>PCI-7422</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>板由通道选择、</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>A/D</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>转换、地址译码逻辑控制（</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>PCI-ISA</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>桥）、开关量输入输出等几大部分组成。</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:52.2pt;text-indent:-36.0pt;mso-list:l1 level1 lfo17;
tab-stops:list 52.2pt'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;mso-bidi-font-family:宋体'><span style='mso-list:Ignore'>（1）<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>A/D</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>通道选择</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='mso-ascii-font-family:Arial;mso-hansi-font-family:
Arial'>板上有</span><span lang=EN-US style='font-family:Arial;mso-bidi-font-family:
"Times New Roman"'>4</span><span style='mso-ascii-font-family:Arial;mso-hansi-font-family:
Arial'>片</span><span lang=EN-US style='font-family:Arial;mso-bidi-font-family:
"Times New Roman"'>508</span><span style='mso-ascii-font-family:Arial;
mso-hansi-font-family:Arial'>八选一模拟量开关芯片，现场</span><span lang=EN-US
style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>32</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>路模拟信号经过</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>XS1
37</span><span style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>芯</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>D</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>型孔头进入多选开关，由通道选择地址</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>BASE+0</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>控制某一路（</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>0</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>～</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>31</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>）模拟量进行</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'>A/D</span><span
style='mso-ascii-font-family:Arial;mso-hansi-font-family:Arial'>转换。</span><span
lang=EN-US style='font-family:Arial;mso-bidi-font-family:"Times New Roman"'><o:p></o:p></span></p>
<h4><span lang=EN-US>(2) A/D </span><span style='font-family:宋体;mso-ascii-font-family:
Arial;mso-hansi-font-family:Arial'>转换</span></h4>
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