RK3288底板+核心板设计过程

qq7643066 发表于 2020-10-21 09:16

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<td class="t_f" id="postmessage_8194784" style="background-color:#def0fb">RK3288底板+核心板设计过程
<div align="left">第一步，拿到客户需求文档，以下是客户提出的需求：</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/184955x11w6tr6fups1291.png" id="aimg_AQ3gB" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/184955x11w6tr6fups1291.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px; height:392px" /> 001.png (98.02 KB, 下载次数: 0) 
下载附件 

<div align="left">16 分钟前上传</div>
 
 
 </div>
 

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/184956c1uwcaciiwaqqlfw.png" id="aimg_Or2Ew" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" src="http://www.openedv.com/data/attachment/forum/201708/11/184956c1uwcaciiwaqqlfw.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:703px" /> 00 
 
 
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<div align="left">第二步，分析客户需求</div>

<div align="left">客户需要实现双屏同显、双屏异显、4屏同显、4屏异显，而且需要带触摸屏；需要带3G/4G,同时还需要带路由功能，</div>

<div align="left">又要带7.4V电池。因此衍生出该项目需要采用一个底板，两个核心板的设计架构，核心板和底板采用DDR接口方式连接，</div>

<div align="left">以下是整理出的框架图：</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/184957khpwj3ode3pperre.png" id="aimg_oss14" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/184957khpwj3ode3pperre.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
 
 </div>

<div align="left">第三步，原理图设计</div>

<div align="left">原理图设计首先需要拿到原厂参考资料，如下，文件太大就不上传了，需要可以加我扣扣</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/184959j9jjipzpfni4v33j.png" id="aimg_pXeQt" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/184959j9jjipzpfni4v33j.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
 
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<div align="left">原理图设计就开始了</div>

<div align="left">电池部分，由于客户需要7.4V的电池供电，要求DC12V和电池自适应，这里选用官方推荐的TI芯片，型号BQ24133，</div>

<div align="left">依照推荐线路作图即可，如下</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185001g8e3s8phctpek3c3.png" id="aimg_rbDFg" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185001g8e3s8phctpek3c3.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
 
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<div align="left">网络部分，客户需要当有以太网的时候，两个核心都能上网，而且底板只有一个RJ45输入，又要WiFi路由，因此</div>

<div align="left">选用AR9331刚好能够实现，同时4G和以太网可以自适应切换。</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185002dwo4il4rmxai7koh.png" id="aimg_f0Gt2" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185002dwo4il4rmxai7koh.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" />006.png (206.6 KB, 下载次数: 0) 
下载附件 

<div align="left">15 分钟前上传</div>
 
 
 </div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185004ijdm0v54s8v88rej.png" id="aimg_lltt3" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185004ijdm0v54s8v88rej.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" />  
 
 
 </div>

<div align="left">RS232部分，需要两路RS232，选用MAX3232CSE芯片，为缩小空间采用双层DB9母座，电路如下图</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185004rv1wjncjbl2vawvr.png" id="aimg_OrMpG" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185004rv1wjncjbl2vawvr.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
 
 </div>

<div align="left">核心板DDR部分，采用4个DDR3，16bit，此模版比较稳定</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185007ynk6ic7ixjiy7y6t.png" id="aimg_Cece0" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185007ynk6ic7ixjiy7y6t.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
 
 </div>

<div align="left">第四步，PCB布局</div>

<div align="left">直接上图了</div>

<div align="left">核心板：</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185013oaobc10rc7od14fa.png" id="aimg_mLa22" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185013oaobc10rc7od14fa.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
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<div align="left">底板：</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185017b7e0esuzxdjo70x6.png" id="aimg_YDr2e" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185017b7e0esuzxdjo70x6.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
 
 </div>

<div align="left">至此，硬件设计基本完成，图纸清单如下：</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185019b14hpz98xfxlz919.png" id="aimg_MR71R" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185019b14hpz98xfxlz919.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
 
 </div>

<div align="left">第五步，驱动调式</div>

<div align="left">根据硬件配置，重新调整dts配置文件，LVDS、EDP、WiFi、4G、TP等等都需要在设备树中增加，大部分的外设我们这边都有拿到了对应补丁，直接打上即可。对于屏幕调式稍微复杂，要根据不同屏幕匹配不同参数，而且多屏幕显示需要做些特殊处理。</div>

<div align="left"><img _load="1" alt="" class="zoom" file="http://www.openedv.com/data/attachment/forum/201708/11/185021mk7u7rnrginrn1cd.png" id="aimg_x9ISH" lazyloaded="true" onclick="zoom(this, this.src, 0, 0, 0)" onmouseover="img_onmouseoverfunc(this)" src="http://www.openedv.com/data/attachment/forum/201708/11/185021mk7u7rnrginrn1cd.png" style="word-wrap:break-word; word-break:break-all; max-width:100%; cursor:pointer; width:740px" /> 
 
 
 </div>

<div align="left">第六步，调式OK的样机送客户确认</div>

<div align="left">客户确认过程会提出一些修改建议，然后按照建议进行优化，达到客户满意为止，</div>

<div align="left">第七步，提交设计资料</div>

<div align="left">客户对功能认可之后把所有设计文档提交客户。</div>

<div align="left">至此，整个开发过程完毕，请各位鉴赏！多谢</div>
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qwqwqw2088 发表于 2020-10-21 11:57

介绍的比较全

谢谢分享

w494143467 发表于 2020-10-21 20:45

这项目感觉工程量有点大呀，应该不是一个人完成的吧，公开这些内容不算透入隐私吗？

qq7643066 发表于 2020-10-22 08:48

一个人也是可以搞定

qq7643066 发表于 2020-10-22 08:49

这个项目很久之前做的，如果有人需要这个资料可以找我

okhxyyo 发表于 2020-10-22 09:15

谢谢分享~~资料可以上传到我们的下载中心哦。

sw401401 发表于 2021-2-17 14:45

资料在哪里下载哟可以买开发板吗

470199829 发表于 2021-2-17 15:28

有个需求跟这个差不多可以配合改板吗

saiya_he 发表于 2024-9-11 16:23

我需要这份资料

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RK3288底板+核心板设计过程