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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/xip/1_introduction.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">模块介绍</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;"></div><div class="- topic/body body"><div class="table-container"><table class="- topic/table table frame-all" id="id__table_ncl_x4q_gdc" data-ofbid="id__table_ncl_x4q_gdc" data-cols="3"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">术语定义</span></caption><colgroup><col style="width:18.315018315018314%"/><col style="width:39.010989010989015%"/><col style="width:42.67399267399268%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ncl_x4q_gdc__entry__1">术语</th><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ncl_x4q_gdc__entry__2">定义</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ncl_x4q_gdc__entry__3">注释说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ncl_x4q_gdc__entry__1">XIP</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ncl_x4q_gdc__entry__2">eXecute In Place</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ncl_x4q_gdc__entry__3">芯片内执行</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ncl_x4q_gdc__entry__1">QSPI</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ncl_x4q_gdc__entry__2">Quad Serial Peripheral Interface</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ncl_x4q_gdc__entry__3">4 线 DATA 传输，串行外设接口</td></tr></tbody></table></div><section class="- topic/section section" id="id__section_cgp_hpf_fdc" data-ofbid="id__section_cgp_hpf_fdc"><h2 class="- topic/title title sectiontitle">功能特性</h2>
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<ul class="- topic/ul ul simple" data-ofbid="d123580e53__20250121171600"><li class="- topic/li li" data-ofbid="d123580e54__20250121171600">
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<p class="- topic/p p" data-ofbid="d123580e56__20250121171600">支持 XIP
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执行程序，节省内存空间</p>
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</li><li class="- topic/li li" data-ofbid="d123580e59__20250121171600">
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<p class="- topic/p p" data-ofbid="d123580e61__20250121171600">支持 XIP
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数据访问，实现快速启动</p>
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</li></ul>
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||
</section><section class="- topic/section section" id="id__section_dgp_hpf_fdc" data-ofbid="id__section_dgp_hpf_fdc"><h2 class="- topic/title title sectiontitle">原理框图</h2>
|
||
<figure class="- topic/fig fig fignone" id="id__id7" data-ofbid="id__id7"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" src="../../../images/xip/qspi_overview_block.png" alt="qspi_overview_block"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">QSPI Block</span></figcaption></figure>
|
||
</section><section class="- topic/section section" id="id__section_egp_hpf_fdc" data-ofbid="id__section_egp_hpf_fdc"><h2 class="- topic/title title sectiontitle">使用说明</h2>
|
||
<div class="- topic/p p" data-ofbid="d123580e81__20250121171600">要实现
|
||
XIP 执行程序功能，在 BootLoader
|
||
阶段需要完成以下步骤：<ol class="- topic/ol ol" id="id__ol_rcj_tjn_vcc" data-ofbid="id__ol_rcj_tjn_vcc"><li class="- topic/li li" data-ofbid="d123580e84__20250121171600">在寄存器中使能
|
||
XIP
|
||
功能。<p class="- topic/p p" data-ofbid="d123580e86__20250121171600">确保处理器支持
|
||
XIP
|
||
启动功能。</p></li><li class="- topic/li li" data-ofbid="d123580e88__20250121171600">配置 NOR
|
||
Flash
|
||
控制器以支持
|
||
XIP
|
||
模式，包括设置适当的时序参数、地址映射和访问权限等。</li><li class="- topic/li li" data-ofbid="d123580e90__20250121171600">将 BootLoader 启动代码复制到 NOR Flash 的特定区域。</li><li class="- topic/li li" data-ofbid="d123580e92__20250121171600">在 BootLoader 中进行必要的系统初始化操作。</li><li class="- topic/li li" data-ofbid="d123580e94__20250121171600">一旦系统初始化完成，BootLoader
|
||
会将控制权转移到 NOR Flash 中的代码，从而开始执行 RTOS 和
|
||
FS。</li></ol></div></section></div></article></main></div>
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