https://community.nxp.com/t5/S32K/S32K312-LPSPI-Slave-mode/m-p/2406707#M60569 <P>Hi&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/262511">@joshua9264</a>&nbsp;</P> <P>Both configurations are valid.</P> <P>By default, the LPSPI interface operates according to Option B, where:</P> <UL> <LI>SIN as the input data line, connected to the master's output.</LI> <LI>SOUT as the output data line, connected to the master's input.</LI> </UL> <P>However, it is also possible to swap the data pin directions so that SOUT is used as the input data line and SIN is used as the output data line, which corresponds to Option C. To achieve this configuration, you need to set the CFGR1[PINCFG] field accordingly.</P> <P>&nbsp;</P> <P>BR, VaneB</P> Wed, 19 Aug 2026 20:26:48 GMT VaneB 2026-08-19T20:26:48Z https://community.nxp.com/t5/S32K/S32K312-LPSPI-Slave-mode/m-p/2406529#M60560 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="joshua9264_0-1787132569429.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/394950i93F6D7C23A6ED221/image-size/medium?v=v2&amp;px=400" role="button" title="joshua9264_0-1787132569429.png" alt="joshua9264_0-1787132569429.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">joshua9264_0-1787132569429.png</span></span></P><P>working：slave mode、4 lines</P><P>(B) is right or (C) is right？</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 19 Aug 2026 09:47:13 GMT https://community.nxp.com/t5/S32K/S32K312-LPSPI-Slave-mode/m-p/2406529#M60560 joshua9264 2026-08-19T09:47:13Z https://community.nxp.com/t5/S32K/S32K312-LPSPI-Slave-mode/m-p/2406707#M60569 <P>Hi&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/262511">@joshua9264</a>&nbsp;</P> <P>Both configurations are valid.</P> <P>By default, the LPSPI interface operates according to Option B, where:</P> <UL> <LI>SIN as the input data line, connected to the master's output.</LI> <LI>SOUT as the output data line, connected to the master's input.</LI> </UL> <P>However, it is also possible to swap the data pin directions so that SOUT is used as the input data line and SIN is used as the output data line, which corresponds to Option C. To achieve this configuration, you need to set the CFGR1[PINCFG] field accordingly.</P> <P>&nbsp;</P> <P>BR, VaneB</P> Wed, 19 Aug 2026 20:26:48 GMT https://community.nxp.com/t5/S32K/S32K312-LPSPI-Slave-mode/m-p/2406707#M60569 VaneB 2026-08-19T20:26:48Z https://community.nxp.com/t5/S32K/S32K312-LPSPI-Slave-mode/m-p/2407225#M60601 OK，thank you Fri, 21 Aug 2026 07:10:56 GMT https://community.nxp.com/t5/S32K/S32K312-LPSPI-Slave-mode/m-p/2407225#M60601 joshua9264 2026-08-21T07:10:56Z