https://community.nxp.com/t5/i-MX-Processors/Sdio-voltge-level-Switching/m-p/1410689#M186778 <P>hi all ,</P><P>we are working with imxrt1170 evk interface to a wifi module. here our wifi module using 3.3 voltage level for sdio&nbsp; .but i saw our source code is using 1.8 voltage level shifting. Should i switch&nbsp; the voltage 1.8v to 3.3v level on my code.</P><P>how can i do that?</P><P>when our code is voltage level 1.8v ,the cmd,data pins high state will be 1.8 v?</P><P>&nbsp;</P><P>when our code is voltage level 3.3v ,the cmd,data pins high state will be 3.3 v?</P> Wed, 09 Feb 2022 05:49:15 GMT Samsi 2022-02-09T05:49:15Z https://community.nxp.com/t5/i-MX-Processors/Sdio-voltge-level-Switching/m-p/1410689#M186778 <P>hi all ,</P><P>we are working with imxrt1170 evk interface to a wifi module. here our wifi module using 3.3 voltage level for sdio&nbsp; .but i saw our source code is using 1.8 voltage level shifting. Should i switch&nbsp; the voltage 1.8v to 3.3v level on my code.</P><P>how can i do that?</P><P>when our code is voltage level 1.8v ,the cmd,data pins high state will be 1.8 v?</P><P>&nbsp;</P><P>when our code is voltage level 3.3v ,the cmd,data pins high state will be 3.3 v?</P> Wed, 09 Feb 2022 05:49:15 GMT https://community.nxp.com/t5/i-MX-Processors/Sdio-voltge-level-Switching/m-p/1410689#M186778 Samsi 2022-02-09T05:49:15Z https://community.nxp.com/t5/i-MX-Processors/Sdio-voltge-level-Switching/m-p/1412355#M186911 <P>Hi&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/191523">@Samsi</a>&nbsp;,</P> <P>SDIO Voltage can be selected by SD1_VSELECT signal.</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jingpan_0-1644572103112.png" style="width: 738px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/170300iC79A8231EFA41D21/image-dimensions/738x321?v=v2" width="738" height="321" role="button" title="jingpan_0-1644572103112.png" alt="jingpan_0-1644572103112.png" /></span></P> <P>&nbsp;</P> <P>Please refer to EVK schematic.</P> <P>Regards,</P> <P>Jing</P> Fri, 11 Feb 2022 09:36:03 GMT https://community.nxp.com/t5/i-MX-Processors/Sdio-voltge-level-Switching/m-p/1412355#M186911 jingpan 2022-02-11T09:36:03Z