https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/TCM-amp-Cache/m-p/1227256#M12591 <P>I'm working on a new feature (SPEEX echo cancellation) for my hardware that, as of right now, is not working because of what appears to be not-enough-horsepower in the '1062.&nbsp; Its still pretty early, so its possible (i.e. likely) I just have a problem with how I'm using the echo canceller, but it raises a general question that I'm sure has already been answered somewhere regarding optimization...</P><P>I have text and data mapped to ITCM and DTCM respectively, so does it matter how I have cache configured (MPU) for those areas? Is cache even in the picture when using TCM?&nbsp;&nbsp;</P><P>tx</P><P>Ed</P> Fri, 05 Feb 2021 16:31:46 GMT EdSutter 2021-02-05T16:31:46Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/TCM-amp-Cache/m-p/1227256#M12591 <P>I'm working on a new feature (SPEEX echo cancellation) for my hardware that, as of right now, is not working because of what appears to be not-enough-horsepower in the '1062.&nbsp; Its still pretty early, so its possible (i.e. likely) I just have a problem with how I'm using the echo canceller, but it raises a general question that I'm sure has already been answered somewhere regarding optimization...</P><P>I have text and data mapped to ITCM and DTCM respectively, so does it matter how I have cache configured (MPU) for those areas? Is cache even in the picture when using TCM?&nbsp;&nbsp;</P><P>tx</P><P>Ed</P> Fri, 05 Feb 2021 16:31:46 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/TCM-amp-Cache/m-p/1227256#M12591 EdSutter 2021-02-05T16:31:46Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/TCM-amp-Cache/m-p/1227311#M12593 <P>Hi</P><P>The tightly coupled memeries operate at core speed without wait states and are not cacheable.</P><P>Regards</P><P>Mark</P><P>&nbsp;</P> Fri, 05 Feb 2021 18:27:21 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/TCM-amp-Cache/m-p/1227311#M12593 mjbcswitzerland 2021-02-05T18:27:21Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/TCM-amp-Cache/m-p/1227314#M12594 <P>That's what I thought...</P><P>Thanks Mark</P> Fri, 05 Feb 2021 18:30:02 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/TCM-amp-Cache/m-p/1227314#M12594 EdSutter 2021-02-05T18:30:02Z