topic Re: S32K144 CAN sample point configure in S32K https://community.nxp.com/t5/S32K/S32K144-CAN-sample-point-configure/m-p/1010270#M6101 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>how did you get a 16tq? With 20MHz protocol clock and desired 500kbps you will need either 8, 10 or 20 tq and also 40tq if CBT register is used. The setting of 80% sample point is possible.</P><P>You can try to test below tool for CAN bit calculation.</P><P><A href="https://community.nxp.com/docs/DOC-342618">https://community.nxp.com/docs/DOC-342618</A>&nbsp;</P><P></P><P>BR, Petr</P></BODY></HTML> Wed, 11 Mar 2020 20:57:52 GMT PetrS 2020-03-11T20:57:52Z S32K144 CAN sample point configure https://community.nxp.com/t5/S32K/S32K144-CAN-sample-point-configure/m-p/1010269#M6100 <HTML><HEAD></HEAD><BODY><DIV style="color: #000000; background-color: #ffffff; font-weight: normal; font-size: 16px;">1. The figure below shows that the sample point I configured is 80%, the crystal vibration on the board is 20MHz, the baud rate is 500K, and the time share of 20tq, which can be configured successfully.<BR /><span class="lia-inline-image-display-wrapper" image-alt="Catch(03-09-13-4(03-09-13-51-34).jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/97780iC81D52FCDD321D88/image-size/large?v=v2&amp;px=999" role="button" title="Catch(03-09-13-4(03-09-13-51-34).jpg" alt="Catch(03-09-13-4(03-09-13-51-34).jpg" /></span><BR />2. The current problem is: based on the same 20MHz crystal vibration on the board and the baud rate of 500K, the sampling point should be configured to meet the requirements of 75%~83.4%, but the time share is 16tq, and the configuration is not successful.<BR /><BR />How to configure it?Thank you very much!</DIV></BODY></HTML> Tue, 10 Mar 2020 11:04:59 GMT https://community.nxp.com/t5/S32K/S32K144-CAN-sample-point-configure/m-p/1010269#M6100 jianguo_li 2020-03-10T11:04:59Z Re: S32K144 CAN sample point configure https://community.nxp.com/t5/S32K/S32K144-CAN-sample-point-configure/m-p/1010270#M6101 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>how did you get a 16tq? With 20MHz protocol clock and desired 500kbps you will need either 8, 10 or 20 tq and also 40tq if CBT register is used. The setting of 80% sample point is possible.</P><P>You can try to test below tool for CAN bit calculation.</P><P><A href="https://community.nxp.com/docs/DOC-342618">https://community.nxp.com/docs/DOC-342618</A>&nbsp;</P><P></P><P>BR, Petr</P></BODY></HTML> Wed, 11 Mar 2020 20:57:52 GMT https://community.nxp.com/t5/S32K/S32K144-CAN-sample-point-configure/m-p/1010270#M6101 PetrS 2020-03-11T20:57:52Z