topic How to configure sampling point in CAN FD in S32 Design Studio https://community.nxp.com/t5/S32-Design-Studio/How-to-configure-sampling-point-in-CAN-FD/m-p/599467#M593 <HTML><HEAD></HEAD><BODY><P>Hi.</P><P></P><P>I have to configure sampling point in CAN FD as below.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>■ sampling point</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>&nbsp;&nbsp; - Arbitration phase : 500K bit rate, 80% sampling point</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>&nbsp;&nbsp; -&nbsp;Data phase : 2M bit rate, 75% sampling point</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>■ condition</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>&nbsp;&nbsp; - CAN clock must be minimum 40MHz or more</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>■ MCU : S32K144(64pin)</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">But I could not configure sampling point as above.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">I selected FIRC as CAN clock.&nbsp;</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">&nbsp;* the&nbsp;clock is&nbsp;selectable among 48, 52, 56, 60MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">&nbsp;* I could not use System OSC Clock because System OSC Range Select is up to 32MHz possible.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">&nbsp;&nbsp; CAN clock must be 40MHz or more. Refer to below picture.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="11.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17417i310411A39A4B33FF/image-size/large?v=v2&amp;px=999" role="button" title="11.jpg" alt="11.jpg" /></span>&nbsp;</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">I configured these values automatically and manually on S32DS but&nbsp;I could not match these&nbsp;four values as above.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">Is it possible to configure these values as above?</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">How&nbsp;should I configure?</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">some body help me please.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">■ PE clock : 60MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="60_A 500 80 D 2000 76.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17455iE4F2270C07D6343D/image-size/large?v=v2&amp;px=999" role="button" title="60_A 500 80 D 2000 76.jpg" alt="60_A 500 80 D 2000 76.jpg" /></span></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">■ PE clock : 56MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="56_A 500 81 D 2000 75.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17557i093CA8ED0B2D966C/image-size/large?v=v2&amp;px=999" role="button" title="56_A 500 81 D 2000 75.jpg" alt="56_A 500 81 D 2000 75.jpg" /></span></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">■ PE clock : 52MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="52_A 500 76 D 2000 76.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17598i66EA21E511BA9CD8/image-size/large?v=v2&amp;px=999" role="button" title="52_A 500 76 D 2000 76.jpg" alt="52_A 500 76 D 2000 76.jpg" /></span></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">■ PE clock : 48MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="48_A 500 81 D 2000 75_48m.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17639iA2BAEA9CCEE95352/image-size/large?v=v2&amp;px=999" role="button" title="48_A 500 81 D 2000 75_48m.jpg" alt="48_A 500 81 D 2000 75_48m.jpg" /></span></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">Kim.</P></BODY></HTML> Mon, 20 Mar 2017 08:56:37 GMT kimjunghyun 2017-03-20T08:56:37Z How to configure sampling point in CAN FD https://community.nxp.com/t5/S32-Design-Studio/How-to-configure-sampling-point-in-CAN-FD/m-p/599467#M593 <HTML><HEAD></HEAD><BODY><P>Hi.</P><P></P><P>I have to configure sampling point in CAN FD as below.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>■ sampling point</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>&nbsp;&nbsp; - Arbitration phase : 500K bit rate, 80% sampling point</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>&nbsp;&nbsp; -&nbsp;Data phase : 2M bit rate, 75% sampling point</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>■ condition</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>&nbsp;&nbsp; - CAN clock must be minimum 40MHz or more</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><STRONG>■ MCU : S32K144(64pin)</STRONG></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">But I could not configure sampling point as above.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">I selected FIRC as CAN clock.&nbsp;</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">&nbsp;* the&nbsp;clock is&nbsp;selectable among 48, 52, 56, 60MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">&nbsp;* I could not use System OSC Clock because System OSC Range Select is up to 32MHz possible.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">&nbsp;&nbsp; CAN clock must be 40MHz or more. Refer to below picture.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="11.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17417i310411A39A4B33FF/image-size/large?v=v2&amp;px=999" role="button" title="11.jpg" alt="11.jpg" /></span>&nbsp;</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">I configured these values automatically and manually on S32DS but&nbsp;I could not match these&nbsp;four values as above.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">Is it possible to configure these values as above?</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">How&nbsp;should I configure?</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">some body help me please.</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">■ PE clock : 60MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="60_A 500 80 D 2000 76.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17455iE4F2270C07D6343D/image-size/large?v=v2&amp;px=999" role="button" title="60_A 500 80 D 2000 76.jpg" alt="60_A 500 80 D 2000 76.jpg" /></span></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">■ PE clock : 56MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="56_A 500 81 D 2000 75.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17557i093CA8ED0B2D966C/image-size/large?v=v2&amp;px=999" role="button" title="56_A 500 81 D 2000 75.jpg" alt="56_A 500 81 D 2000 75.jpg" /></span></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">■ PE clock : 52MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="52_A 500 76 D 2000 76.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17598i66EA21E511BA9CD8/image-size/large?v=v2&amp;px=999" role="button" title="52_A 500 76 D 2000 76.jpg" alt="52_A 500 76 D 2000 76.jpg" /></span></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">■ PE clock : 48MHz</P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"><span class="lia-inline-image-display-wrapper" image-alt="48_A 500 81 D 2000 75_48m.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/17639iA2BAEA9CCEE95352/image-size/large?v=v2&amp;px=999" role="button" title="48_A 500 81 D 2000 75_48m.jpg" alt="48_A 500 81 D 2000 75_48m.jpg" /></span></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;"></P><P style="margin: 0px 0pt; line-height: 150%; text-indent: 0pt;">Kim.</P></BODY></HTML> Mon, 20 Mar 2017 08:56:37 GMT https://community.nxp.com/t5/S32-Design-Studio/How-to-configure-sampling-point-in-CAN-FD/m-p/599467#M593 kimjunghyun 2017-03-20T08:56:37Z