topic MPC5777M XOSC config in DCF in MPC5xxx https://community.nxp.com/t5/MPC5xxx/MPC5777M-XOSC-config-in-DCF/m-p/905062#M13452 <HTML><HEAD></HEAD><BODY><P>1. I found that DCF records can&nbsp; <SPAN class="">trim the internal capacitor values, so I want to know how much the default capacitor value is and how to trim it. If I set UTEST Miscellaneous[5:1]&nbsp; (XOSC LOAD CAP SEL) as 1 ,2 or 3 etc., how much the capacitor value change.</SPAN></P><P><SPAN class=""></SPAN></P><P><SPAN class="">2.&nbsp;I found that there is no&nbsp;<SPAN>UTEST Miscellaneous value in the DCF of MPC5777M EVB, so I think the external OSC is disabled. But the example code works well on it. So I want know if I should configure XOSC DCF records. What effect If I don't configure DCF records.</SPAN></SPAN></P></BODY></HTML> Thu, 23 May 2019 07:19:44 GMT bwp530 2019-05-23T07:19:44Z MPC5777M XOSC config in DCF https://community.nxp.com/t5/MPC5xxx/MPC5777M-XOSC-config-in-DCF/m-p/905062#M13452 <HTML><HEAD></HEAD><BODY><P>1. I found that DCF records can&nbsp; <SPAN class="">trim the internal capacitor values, so I want to know how much the default capacitor value is and how to trim it. If I set UTEST Miscellaneous[5:1]&nbsp; (XOSC LOAD CAP SEL) as 1 ,2 or 3 etc., how much the capacitor value change.</SPAN></P><P><SPAN class=""></SPAN></P><P><SPAN class="">2.&nbsp;I found that there is no&nbsp;<SPAN>UTEST Miscellaneous value in the DCF of MPC5777M EVB, so I think the external OSC is disabled. But the example code works well on it. So I want know if I should configure XOSC DCF records. What effect If I don't configure DCF records.</SPAN></SPAN></P></BODY></HTML> Thu, 23 May 2019 07:19:44 GMT https://community.nxp.com/t5/MPC5xxx/MPC5777M-XOSC-config-in-DCF/m-p/905062#M13452 bwp530 2019-05-23T07:19:44Z Re: MPC5777M XOSC config in DCF https://community.nxp.com/t5/MPC5xxx/MPC5777M-XOSC-config-in-DCF/m-p/905063#M13453 <HTML><HEAD></HEAD><BODY><P>1) You may find it described in the reference manual.</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/83975i9E3E6A6F33482D94/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P></P><P>2) It is correct as the device is booting with IRC clock.</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/83715i08456E57D4309A7F/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P></BODY></HTML> Thu, 23 May 2019 15:04:12 GMT https://community.nxp.com/t5/MPC5xxx/MPC5777M-XOSC-config-in-DCF/m-p/905063#M13453 davidtosenovjan 2019-05-23T15:04:12Z