https://community.nxp.com/t5/Layerscape/DDR-1D-training-failed/m-p/1307460#M8447 <P>Many issues can cause problems on DDR interface. These include</P> <P>mistakes in the schematics;</P> <P>mistakes in DDR controller configuration;</P> <P>mistakes in DDR PCB layout;</P> <P>board level issues;</P> <P>&nbsp;</P> <P>Regards,</P> <P>Bulat</P> <P>&nbsp;</P> Wed, 14 Jul 2021 07:15:00 GMT Bulat 2021-07-14T07:15:00Z https://community.nxp.com/t5/Layerscape/DDR-1D-training-failed/m-p/1307239#M8444 <P><SPAN>Platform: LX2160A customized board card。</SPAN></P><P><SPAN>When I used QCVS to validate DDR4, 11/16 failed, showing the following error. it was DDR PHY:1D training failed。<SPAN class="tgt">What causes it?</SPAN><SPAN class="tgt">So how do we deal with that。</SPAN></SPAN><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="muaxi8_0-1626226490292.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/149729i25ED4468AE8E7F1F/image-size/medium?v=v2&amp;px=400" role="button" title="muaxi8_0-1626226490292.png" alt="muaxi8_0-1626226490292.png" /></span></P> Wed, 14 Jul 2021 01:40:34 GMT https://community.nxp.com/t5/Layerscape/DDR-1D-training-failed/m-p/1307239#M8444 muaxi8 2021-07-14T01:40:34Z https://community.nxp.com/t5/Layerscape/DDR-1D-training-failed/m-p/1307460#M8447 <P>Many issues can cause problems on DDR interface. These include</P> <P>mistakes in the schematics;</P> <P>mistakes in DDR controller configuration;</P> <P>mistakes in DDR PCB layout;</P> <P>board level issues;</P> <P>&nbsp;</P> <P>Regards,</P> <P>Bulat</P> <P>&nbsp;</P> Wed, 14 Jul 2021 07:15:00 GMT https://community.nxp.com/t5/Layerscape/DDR-1D-training-failed/m-p/1307460#M8447 Bulat 2021-07-14T07:15:00Z