https://community.nxp.com/t5/i-MX-Processors/frequency-lower-at-high-temperature-imx6/m-p/736266#M114578 <HTML><HEAD></HEAD><BODY><P>Hi Barak</P><P></P><P>cpu frequency changing behaviour is described in</P><P>AN4579 i.MX 6 Series Thermal Management Guidelines</P><P><A class="link-titled" href="https://www.nxp.com/docs/en/application-note/AN4579.pdf" title="https://www.nxp.com/docs/en/application-note/AN4579.pdf">https://www.nxp.com/docs/en/application-note/AN4579.pdf</A>&nbsp;</P><P>Failures at higher temperatures may mean that the drive strength is too low <BR />and the signals may not rise/fall fast enough.</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> Tue, 17 Apr 2018 07:35:35 GMT igorpadykov 2018-04-17T07:35:35Z https://community.nxp.com/t5/i-MX-Processors/frequency-lower-at-high-temperature-imx6/m-p/736265#M114577 <HTML><HEAD></HEAD><BODY><P>hi all,</P><P>i add some work with&nbsp;&nbsp;imx6 and&nbsp; ddr stress test,</P><P>the test failed in high temperature above 80 c and i think it's because of the change in the cpu frequency.</P><P>i nodes that there is 2 threshold:</P><P>passive &amp; critical, and i'm sure i worked above the passive threshold - 80.&nbsp;&nbsp;</P><P></P><P>i would like to know what is the specific value of the frequency cpu in this mode?</P><P>(when the cpu decided to change the frq)</P><P>i like to get some table that show frq VS temp</P><P></P><P>best regards</P><P>GG&nbsp; &nbsp;</P></BODY></HTML> Mon, 16 Apr 2018 12:37:00 GMT https://community.nxp.com/t5/i-MX-Processors/frequency-lower-at-high-temperature-imx6/m-p/736265#M114577 barakbarak 2018-04-16T12:37:00Z https://community.nxp.com/t5/i-MX-Processors/frequency-lower-at-high-temperature-imx6/m-p/736266#M114578 <HTML><HEAD></HEAD><BODY><P>Hi Barak</P><P></P><P>cpu frequency changing behaviour is described in</P><P>AN4579 i.MX 6 Series Thermal Management Guidelines</P><P><A class="link-titled" href="https://www.nxp.com/docs/en/application-note/AN4579.pdf" title="https://www.nxp.com/docs/en/application-note/AN4579.pdf">https://www.nxp.com/docs/en/application-note/AN4579.pdf</A>&nbsp;</P><P>Failures at higher temperatures may mean that the drive strength is too low <BR />and the signals may not rise/fall fast enough.</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> Tue, 17 Apr 2018 07:35:35 GMT https://community.nxp.com/t5/i-MX-Processors/frequency-lower-at-high-temperature-imx6/m-p/736266#M114578 igorpadykov 2018-04-17T07:35:35Z