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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/display/display_user_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Display 使用指南</h1><div class="date inPage">28 Nov 2024</div><div style="color: gray;">
Read time: 2 minute(s)
</div><div class="- topic/body body"><div class="- topic/p p" data-ofbid="d134887e18__20250121171607">显示子系统 (DSS) 负责将内存中的数据转换成 LCD 信号输出。DSS 包括以下主要组件:<ul class="- topic/ul ul" id="id__ul_wqj_bsv_ddc" data-ofbid="id__ul_wqj_bsv_ddc"><li class="- topic/li li" data-ofbid="d134887e21__20250121171607">显示引擎 (DE):提供多图层叠加,支持 Alpha Blending 和 Color Key支持各种像素操作例如颜色空间转换和缩放等。</li><li class="- topic/li li" data-ofbid="d134887e23__20250121171607">显示接口 (DI):将显示输出的无缝连接到 LCD 外设,支持 <span class="- topic/ph ph">RGB/ LVDS/ MIPI-DSI/ MIPI-DBI</span>
等接口标准。</li></ul></div><div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_ib2_srv_ddc" data-ofbid="id__table_ib2_srv_ddc" data-cols="3"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><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:31.684981684981683%"/><col style="width:50%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ib2_srv_ddc__entry__1">术语</th><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ib2_srv_ddc__entry__2">定义</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ib2_srv_ddc__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_ib2_srv_ddc__entry__1">DSS</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__2">Display SubSystem</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ib2_srv_ddc__entry__3">显示子系统</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__1">DE</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__2">Display Engine</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ib2_srv_ddc__entry__3">显示引擎</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__1">DI</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__2">Display Interface</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ib2_srv_ddc__entry__3">显示接口,包括 RGB/LVDS/MIPI-DSI/MIPI-DBI 等</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__1">PANEL</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__2">panel</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ib2_srv_ddc__entry__3">外接屏幕驱动</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__1">RGB</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__2">Red Green Blue</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ib2_srv_ddc__entry__3">按红绿蓝三原色编码的显示接口标准</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__1">LVDS</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__2">Low Voltage Differential Signaling</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ib2_srv_ddc__entry__3">低压差分信号的显示接口标准</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__1">MIPI-DSI</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ib2_srv_ddc__entry__2">Mipi Display Serial Interface</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ib2_srv_ddc__entry__3">MIPI 组织定义的一个显示接口标准</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ib2_srv_ddc__entry__1">MIPI-DBI</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ib2_srv_ddc__entry__2">Mipi Display Bus Interface</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ib2_srv_ddc__entry__3">MIPI 组织定义的一个显示接口标准</td></tr></tbody></table></div><div class="- topic/div div section" id="id__id3">从硬件角度看DSS 框架如下所示:<figure class="- topic/fig fig fignone" id="id__id7" data-ofbid="id__id7"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_ukg_srv_ddc" src="../../../images/display/display_system.png" width="384" alt="/display_system"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label"><span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">显示子系统</span></figcaption></figure>
</div><section class="- topic/section section" id="id__section_xc4_3k1_ybc" data-ofbid="id__section_xc4_3k1_ybc"><h2 class="- topic/title title sectiontitle">特性说明</h2>
<p class="- topic/p p" data-ofbid="d134887e114__20250121171607"><strong class="+ topic/ph hi-d/b ph b">Display Engine</strong></p>
<ul class="- topic/ul ul" id="id__ul_yc4_3k1_ybc" data-ofbid="id__ul_yc4_3k1_ybc"><li class="- topic/li li" data-ofbid="d134887e119__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e121__20250121171607">最高性能 1920*1080@60 fps</p>
</li><li class="- topic/li li" data-ofbid="d134887e124__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e126__20250121171607">支持两个显示图层,一个 Video 图层,一个 UI 图层UI 图层内支持 4 个矩形窗口</p>
</li><li class="- topic/li li" data-ofbid="d134887e129__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e131__20250121171607">UI 图层支持图像格式ARGB8888/ XRGB8888/ RGB888/ ARGB4444/ ARGB1555/ RGB565</p>
</li><li class="- topic/li li" data-ofbid="d134887e134__20250121171607">
<div class="- topic/p p" data-ofbid="d134887e136__20250121171607">Video 图层支持图像格式:<ul class="- topic/ul ul" id="id__ul_odk_zhp_bcc" data-ofbid="id__ul_odk_zhp_bcc"><li class="- topic/li li" data-ofbid="d134887e139__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e141__20250121171607">ARGB8888/ XRGB8888/ RGB888/ ARGB4444/ ARGB1555/ RGB565</p>
</li><li class="- topic/li li" data-ofbid="d134887e144__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e146__20250121171607">NV12/NV21/ NV16/ NV61/ YUYV/ YVYU/ UYVY/ VYUY/ YUV400</p>
</li></ul></div>
</li><li class="- topic/li li" data-ofbid="d134887e150__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e152__20250121171607">Video 图层的 YUV 格式支持 1/31.999x ~ 32x 缩放RGB 格式不支持)</p>
</li><li class="- topic/li li" data-ofbid="d134887e155__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e157__20250121171607">支持误差扩散 Dither</p>
</li></ul>
<p class="- topic/p p" data-ofbid="d134887e161__20250121171607"><strong class="+ topic/ph hi-d/b ph b">RGB 接口</strong></p>
<ul class="- topic/ul ul" id="id__ul_bd4_3k1_ybc" data-ofbid="id__ul_bd4_3k1_ybc"><li class="- topic/li li" data-ofbid="d134887e166__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e168__20250121171607">支持 PRGB 24/ 18/ 16-bit 模式,最高 120 MHz PIXELCLK</p>
</li><li class="- topic/li li" data-ofbid="d134887e171__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e173__20250121171607">支持 SRGB 8/6-bit 模式,最高 480x320@60 fps</p>
</li><li class="- topic/li li" data-ofbid="d134887e176__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e178__20250121171607">支持 8 位色深R/G/B 三组信号可任意交叉,空白区域数据可配置</p>
</li><li class="- topic/li li" data-ofbid="d134887e181__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e183__20250121171607">支持 R/G/B 组内数据高低位互换</p>
</li><li class="- topic/li li" data-ofbid="d134887e186__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e188__20250121171607">PRGB/SRGB 时钟提供 4 个相位选择</p>
</li></ul>
<p class="- topic/p p" data-ofbid="d134887e193__20250121171607"><strong class="+ topic/ph hi-d/b ph b">LVDS 接口</strong></p>
<ul class="- topic/ul ul" id="id__ul_cd4_3k1_ybc" data-ofbid="id__ul_cd4_3k1_ybc"><li class="- topic/li li" data-ofbid="d134887e198__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e200__20250121171607">支持 Single Link 和 Dual Link最高速率 700 Mbps</p>
</li><li class="- topic/li li" data-ofbid="d134887e203__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e205__20250121171607">支持 VESA 和 JEIDA 模式</p>
</li><li class="- topic/li li" data-ofbid="d134887e208__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e210__20250121171607">支持 18-bit 和 24-bit 数据传输</p>
</li><li class="- topic/li li" data-ofbid="d134887e213__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e215__20250121171607">支持 LVDS 信号极性选择模式</p>
</li><li class="- topic/li li" data-ofbid="d134887e218__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e220__20250121171607">支持 LVDS 五组差分对信号任意互换</p>
</li><li class="- topic/li li" data-ofbid="d134887e223__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e225__20250121171607">支持 LVDS Link0 和 LVDS Link1 输出互换</p>
</li></ul>
<p class="- topic/p p" data-ofbid="d134887e229__20250121171607"><strong class="+ topic/ph hi-d/b ph b">MIPI-DSI 接口</strong></p>
<ul class="- topic/ul ul" id="id__ul_dd4_3k1_ybc" data-ofbid="id__ul_dd4_3k1_ybc"><li class="- topic/li li" data-ofbid="d134887e234__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e236__20250121171607">最大支持 1080P60 及衍生分辨率,支持 Video 和 Command 模式</p>
</li><li class="- topic/li li" data-ofbid="d134887e239__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e241__20250121171607">Video 模式支持 Non-burst 和 Burst 两种方式</p>
</li><li class="- topic/li li" data-ofbid="d134887e244__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e246__20250121171607">可配置为 1/ 2/ 3/ 4 对数据通道,每通道最大支持 1 Gbps 速率</p>
</li><li class="- topic/li li" data-ofbid="d134887e249__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e251__20250121171607">支持 RGB888RGB666RGB666 packedRGB565</p>
</li></ul>
<div class="- topic/div div">
<div class="- topic/p p" data-ofbid="d134887e257__20250121171607"><strong class="+ topic/ph hi-d/b ph b">MIPI-DBI 接口</strong><ul class="- topic/ul ul" id="id__ul_xmd_sx3_ndc" data-ofbid="id__ul_xmd_sx3_ndc"><li class="- topic/li li" data-ofbid="d134887e261__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e263__20250121171607">支持 B 类接口Intel 8080 总线</p>
</li><li class="- topic/li li" data-ofbid="d134887e266__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e268__20250121171607">支持 C 类接口SPI 总线</p>
</li><li class="- topic/li li" data-ofbid="d134887e271__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e273__20250121171607">I8080 支持 24/18/16/9/8-bit 模式,最高 960x540@60 fps</p>
</li><li class="- topic/li li" data-ofbid="d134887e276__20250121171607">
<p class="- topic/p p" data-ofbid="d134887e278__20250121171607">SPI 支持 3/4-wire 以及 4-sda 模式,最高 480x320@60 fps</p>
</li></ul></div>
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