cherry-embedded
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CherryUSB
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  <div class="section" id="usb">
<h1>USB 基本概念<a class="headerlink" href="#usb" title="永久链接至标题">¶</a></h1>
<p>本文主要对 USB 官方 usb2.0.pdf 中提供的第七章、第八章、第九章进行讲解。</p>
<div class="section" id="id1">
<h2>简介<a class="headerlink" href="#id1" title="永久链接至标题">¶</a></h2>
</div>
<div class="section" id="id2">
<h2>USB 信号状态<a class="headerlink" href="#id2" title="永久链接至标题">¶</a></h2>
</div>
<div class="section" id="id3">
<h2>USB 连接与断开检测<a class="headerlink" href="#id3" title="永久链接至标题">¶</a></h2>
</div>
<div class="section" id="id4">
<h2>USB 速度识别<a class="headerlink" href="#id4" title="永久链接至标题">¶</a></h2>
</div>
<div class="section" id="id5">
<h2>USB 设备状态<a class="headerlink" href="#id5" title="永久链接至标题">¶</a></h2>
</div>
<div class="section" id="id6">
<h2>USB 编码与位填充<a class="headerlink" href="#id6" title="永久链接至标题">¶</a></h2>
</div>
<div class="section" id="id7">
<h2>USB 字段(域)<a class="headerlink" href="#id7" title="永久链接至标题">¶</a></h2>
<div class="section" id="id8">
<h3>同步字段<a class="headerlink" href="#id8" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id9">
<h3>包标识符字段<a class="headerlink" href="#id9" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id10">
<h3>地址字段<a class="headerlink" href="#id10" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id11">
<h3>帧号字段<a class="headerlink" href="#id11" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id12">
<h3>数据字段<a class="headerlink" href="#id12" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="crc">
<h3>CRC 字段<a class="headerlink" href="#crc" title="永久链接至标题">¶</a></h3>
</div>
</div>
<div class="section" id="id13">
<h2>USB 包<a class="headerlink" href="#id13" title="永久链接至标题">¶</a></h2>
<div class="section" id="id14">
<h3>令牌包<a class="headerlink" href="#id14" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id15">
<h3>数据包<a class="headerlink" href="#id15" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id16">
<h3>握手包<a class="headerlink" href="#id16" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id17">
<h3>特殊数据包<a class="headerlink" href="#id17" title="永久链接至标题">¶</a></h3>
</div>
</div>
<div class="section" id="id18">
<h2>USB 事务<a class="headerlink" href="#id18" title="永久链接至标题">¶</a></h2>
<div class="section" id="setup">
<h3>SETUP 事务<a class="headerlink" href="#setup" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="in">
<h3>IN 事务<a class="headerlink" href="#in" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="out">
<h3>OUT 事务<a class="headerlink" href="#out" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id19">
<h3>特殊事务<a class="headerlink" href="#id19" title="永久链接至标题">¶</a></h3>
</div>
</div>
<div class="section" id="id20">
<h2>USB 传输<a class="headerlink" href="#id20" title="永久链接至标题">¶</a></h2>
<div class="section" id="id21">
<h3>控制传输<a class="headerlink" href="#id21" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id22">
<h3>批量传输<a class="headerlink" href="#id22" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id23">
<h3>中断传输<a class="headerlink" href="#id23" title="永久链接至标题">¶</a></h3>
</div>
<div class="section" id="id24">
<h3>同步传输<a class="headerlink" href="#id24" title="永久链接至标题">¶</a></h3>
</div>
</div>
</div>


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