https://community.nxp.com/t5/LPC-Microcontrollers/LPC546xx-CAN-FD-External-timestamp-HCLK/m-p/1455778#M48718 <P>The manual says: ETCP:&nbsp;External timestamp prescaler value. The HCLK is divided down by the prescaler<BR />value plus 1 to clock the external timestamp counter.&nbsp;</P><P>What is HCLK?</P> Tue, 10 May 2022 14:51:04 GMT wangyanjun 2022-05-10T14:51:04Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC546xx-CAN-FD-External-timestamp-HCLK/m-p/1455778#M48718 <P>The manual says: ETCP:&nbsp;External timestamp prescaler value. The HCLK is divided down by the prescaler<BR />value plus 1 to clock the external timestamp counter.&nbsp;</P><P>What is HCLK?</P> Tue, 10 May 2022 14:51:04 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC546xx-CAN-FD-External-timestamp-HCLK/m-p/1455778#M48718 wangyanjun 2022-05-10T14:51:04Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC546xx-CAN-FD-External-timestamp-HCLK/m-p/1456956#M48740 <P>Hi&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/25842">@wangyanjun</a>&nbsp;</P> <P>&nbsp;</P> <P>Thank you so much for using our community. I really appreciate your patience.</P> <P>&nbsp;</P> <P>Regarding your question, HCLK is the main clock of your board, so this one is divided by the prescaler value plus 1 to determinate the clock for the external timestamps counter.</P> <P>&nbsp;</P> <P>Hope this helps, please let me know if you have more questions.</P> <P>&nbsp;</P> <P>Best Regards.<BR />Pablo Avalos.</P> Thu, 12 May 2022 04:44:51 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC546xx-CAN-FD-External-timestamp-HCLK/m-p/1456956#M48740 PabloAvalos 2022-05-12T04:44:51Z