i.MX ProcessorsのトピックRe: 6sololite and Micron LPDDR2 EDB8132B4PM-1D-F issues https://community.nxp.com/t5/i-MX-Processors/deleted/m-p/739980#M115155 <HTML><HEAD></HEAD><BODY><P>Hi Jaya</P><P></P><P>except changing drive strength from i.MX side, it also can be changed</P><P>from EDB8132B4PM ddr: using MR3 (DS). May be useful to check temperature</P><P>dependency: if cooling down the part causes more failures, then it is likely the drive strength is <BR />too high causing more overshoots and undershoots. Memtester differs from ddr test that</P><P>it also stresses power subsystem. One can pay attention to ripples: requirement for ripple noise</P><P>should be less than 5% Vp-p of supply voltage average value. Related power rails affected: all</P><P>VDD_xxx_IN and VDD_xxx_CAP and test with slightly increasing VDD_SOC_CAP.</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Sun, 21 Jan 2018 22:55:54 GMT igorpadykov 2018-01-21T22:55:54Z deleted https://community.nxp.com/t5/i-MX-Processors/deleted/m-p/739979#M115154 <HTML><HEAD></HEAD><BODY><P>deleted</P></BODY></HTML> Sat, 20 Jan 2018 04:20:40 GMT https://community.nxp.com/t5/i-MX-Processors/deleted/m-p/739979#M115154 jayakumar2 2018-01-20T04:20:40Z Re: 6sololite and Micron LPDDR2 EDB8132B4PM-1D-F issues https://community.nxp.com/t5/i-MX-Processors/deleted/m-p/739980#M115155 <HTML><HEAD></HEAD><BODY><P>Hi Jaya</P><P></P><P>except changing drive strength from i.MX side, it also can be changed</P><P>from EDB8132B4PM ddr: using MR3 (DS). May be useful to check temperature</P><P>dependency: if cooling down the part causes more failures, then it is likely the drive strength is <BR />too high causing more overshoots and undershoots. Memtester differs from ddr test that</P><P>it also stresses power subsystem. One can pay attention to ripples: requirement for ripple noise</P><P>should be less than 5% Vp-p of supply voltage average value. Related power rails affected: all</P><P>VDD_xxx_IN and VDD_xxx_CAP and test with slightly increasing VDD_SOC_CAP.</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Sun, 21 Jan 2018 22:55:54 GMT https://community.nxp.com/t5/i-MX-Processors/deleted/m-p/739980#M115155 igorpadykov 2018-01-21T22:55:54Z