https://community.nxp.com/t5/i-MX-Processors/imx8m-mini-MIPI-CLK/m-p/1254216#M171786 <P>&nbsp;</P><P>imx8m mini output of Mipi_ CLK signal is not very stable like below，is it normal？</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_1-1617100054698.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140960i2334211294BA75A9/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_1-1617100054698.png" alt="darcyxu_1-1617100054698.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_1-1617100054698.png</span></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_2-1617100186226.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140961i51666D808EDA75A2/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_2-1617100186226.png" alt="darcyxu_2-1617100186226.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_2-1617100186226.png</span></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_3-1617100222457.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140962iF5223A88CD7CB8EB/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_3-1617100222457.png" alt="darcyxu_3-1617100222457.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_3-1617100222457.png</span></span></P><P>&nbsp;</P><P>&nbsp;</P><P>other CPU output MIPI_CLK is&nbsp;stable ， like below：</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_4-1617100279916.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140963i04BDD16E58838220/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_4-1617100279916.png" alt="darcyxu_4-1617100279916.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_4-1617100279916.png</span></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_5-1617100337344.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140964i231A1D16890E6024/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_5-1617100337344.png" alt="darcyxu_5-1617100337344.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_5-1617100337344.png</span></span></P><P>&nbsp;</P><P>How to optimize and let imx8m Mini output stable signal？</P> Tue, 30 Mar 2021 10:34:14 GMT darcyxu 2021-03-30T10:34:14Z https://community.nxp.com/t5/i-MX-Processors/imx8m-mini-MIPI-CLK/m-p/1254216#M171786 <P>&nbsp;</P><P>imx8m mini output of Mipi_ CLK signal is not very stable like below，is it normal？</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_1-1617100054698.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140960i2334211294BA75A9/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_1-1617100054698.png" alt="darcyxu_1-1617100054698.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_1-1617100054698.png</span></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_2-1617100186226.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140961i51666D808EDA75A2/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_2-1617100186226.png" alt="darcyxu_2-1617100186226.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_2-1617100186226.png</span></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_3-1617100222457.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140962iF5223A88CD7CB8EB/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_3-1617100222457.png" alt="darcyxu_3-1617100222457.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_3-1617100222457.png</span></span></P><P>&nbsp;</P><P>&nbsp;</P><P>other CPU output MIPI_CLK is&nbsp;stable ， like below：</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_4-1617100279916.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140963i04BDD16E58838220/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_4-1617100279916.png" alt="darcyxu_4-1617100279916.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_4-1617100279916.png</span></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="darcyxu_5-1617100337344.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/140964i231A1D16890E6024/image-size/medium?v=v2&amp;px=400" role="button" title="darcyxu_5-1617100337344.png" alt="darcyxu_5-1617100337344.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">darcyxu_5-1617100337344.png</span></span></P><P>&nbsp;</P><P>How to optimize and let imx8m Mini output stable signal？</P> Tue, 30 Mar 2021 10:34:14 GMT https://community.nxp.com/t5/i-MX-Processors/imx8m-mini-MIPI-CLK/m-p/1254216#M171786 darcyxu 2021-03-30T10:34:14Z https://community.nxp.com/t5/i-MX-Processors/imx8m-mini-MIPI-CLK/m-p/1254248#M171795 <P>Hi Darcy</P> <P>&nbsp;</P> <P>for stable signal it is necessary to check mipi layout described in sect.3.5. Trace impedance recommendations, sect.3.4.7. High-speed routing recommendations</P> <P><A id="relatedDocsClick_3" href="https://www.nxp.com/webapp/Download?colCode=IMX8MMHDG" target="_blank" rel="noopener"><STRONG>i.MX 8M Mini Hardware Developer’s Guide</STRONG></A></P> <P>Also pay attention to attached mipi cables and connectors, they also should have proper</P> <P>impedance matching.</P> <P>&nbsp;</P> <P>Best regards<BR />igor</P> Tue, 30 Mar 2021 11:39:43 GMT https://community.nxp.com/t5/i-MX-Processors/imx8m-mini-MIPI-CLK/m-p/1254248#M171795 igorpadykov 2021-03-30T11:39:43Z