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<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><meta name="description" content="Consumer IR (CIR) 模块包含发送器和接收器，其特殊设计支持生成或捕获各类数字脉冲信号。模块使用游程编码 (RLC，Run-Length Code) 方式编码数字脉冲信号，以 Byte 为单位记录编码数据，其中： MSB 位表示信号电平： 1：高电平 0：低电平 其余 7 位表示信号宽度，以采样时钟为单位。 最大宽度为 128，假如某一电平宽度大于 128，则使用另一字节存储。 表 ..."/><meta name="DC.rights.owner" content="(C) 版权 2025"/><meta name="copyright" content="(C) 版权 2025"/><meta name="generator" content="DITA-OT"/><meta name="DC.type" content="concept"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.date.modified" content="2024-12-02"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="cir"/><meta name="DC.language" content="zh-CN"/><title>CIR 使用指南</title><!-- Build number 2023110923. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content=""/><meta name="wh-source-relpath" content="topics/sdk/cir/cir_user_guide.dita"/><meta name="wh-out-relpath" content="topics/sdk/cir/cir_user_guide.html"/>
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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" 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/cir/cir_user_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">CIR 使用指南</h1><div class="date inPage">2 Dec 2024</div><div style="color: gray;"></div><div class="- topic/body concept/conbody body conbody"><div class="- topic/p p" data-ofbid="d236793e22__20250121171656">Consumer IR (CIR) 模块包含发送器和接收器，其特殊设计支持生成或捕获各类数字脉冲信号。模块使用游程编码
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(RLC，Run-Length Code) 方式编码数字脉冲信号，以 Byte 为单位记录编码数据，其中：<ul class="- topic/ul ul" id="cir__ul_mlr_45v_bzb" data-ofbid="cir__ul_mlr_45v_bzb"><li class="- topic/li li" data-ofbid="d236793e25__20250121171656">MSB 位表示信号电平：<ul class="- topic/ul ul" id="cir__ul_rjp_drv_5zb" data-ofbid="cir__ul_rjp_drv_5zb"><li class="- topic/li li" data-ofbid="d236793e28__20250121171656">1：高电平</li><li class="- topic/li li" data-ofbid="d236793e30__20250121171656">0：低电平</li></ul></li><li class="- topic/li li" data-ofbid="d236793e32__20250121171656">其余 7 位表示信号宽度，以采样时钟为单位。<p class="- topic/p p" data-ofbid="d236793e34__20250121171656">最大宽度为 128，假如某一电平宽度大于 128，则使用另一字节存储。</p></li></ul></div><div class="table-container"><table class="- topic/table table frame-all" id="cir__table_ks4_jdn_d1c" data-ofbid="cir__table_ks4_jdn_d1c" 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:33.33333333333333%"/><col style="width:33.33333333333333%"/><col style="width:33.33333333333333%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="cir__table_ks4_jdn_d1c__entry__1">术语</th><th class="- topic/entry entry colsep-1 rowsep-1" id="cir__table_ks4_jdn_d1c__entry__2">定义</th><th class="- topic/entry entry colsep-0 rowsep-1" id="cir__table_ks4_jdn_d1c__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="cir__table_ks4_jdn_d1c__entry__1">CIR</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="cir__table_ks4_jdn_d1c__entry__2">consumer IR</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="cir__table_ks4_jdn_d1c__entry__3">消费者红外</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="cir__table_ks4_jdn_d1c__entry__1">RLC</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="cir__table_ks4_jdn_d1c__entry__2">Run-Length Code</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="cir__table_ks4_jdn_d1c__entry__3">游程编码</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="cir__table_ks4_jdn_d1c__entry__1">NEC</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="cir__table_ks4_jdn_d1c__entry__2">-</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="cir__table_ks4_jdn_d1c__entry__3">一种红外编码协议</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="cir__table_ks4_jdn_d1c__entry__1">RC5</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="cir__table_ks4_jdn_d1c__entry__2">-</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="cir__table_ks4_jdn_d1c__entry__3">一种红外编码协议</td></tr></tbody></table></div><section class="- topic/section section" id="cir__section_dvm_rln_4dc" data-ofbid="cir__section_dvm_rln_4dc"><h2 class="- topic/title title sectiontitle">模块特性</h2>
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<ul class="- topic/ul ul" id="cir__ul_fdt_ndn_d1c" data-ofbid="cir__ul_fdt_ndn_d1c"><li class="- topic/li li" data-ofbid="d236793e86__20250121171656">
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<p class="- topic/p p" data-ofbid="d236793e88__20250121171656">全物理层执行</p>
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</li><li class="- topic/li li" data-ofbid="d236793e91__20250121171656">
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<p class="- topic/p p" data-ofbid="d236793e93__20250121171656">支持 CIR 远程控制或无线键盘</p>
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</li><li class="- topic/li li" data-ofbid="d236793e96__20250121171656">
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<p class="- topic/p p" data-ofbid="d236793e98__20250121171656">64 levels*8bits FIFO 接收缓存，可编程 FIFO 阈值</p>
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</li><li class="- topic/li li" data-ofbid="d236793e101__20250121171656">
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<p class="- topic/p p" data-ofbid="d236793e103__20250121171656">128 bytes FIFO 发送缓存，可编程载波频率及占空比，支持任意波形发生</p>
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</li><li class="- topic/li li" data-ofbid="d236793e106__20250121171656">
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<p class="- topic/p p" data-ofbid="d236793e108__20250121171656">支持中断</p>
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</li></ul>
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