topic Can the RTC output be used for PLL0 input? in LPC FAQs https://community.nxp.com/t5/LPC-FAQs/Can-the-RTC-output-be-used-for-PLL0-input/m-p/466344#M78 <HTML><HEAD></HEAD><BODY><P><SPAN style="color: #646464; font-family: Arial, sans-serif; font-size: 12px;">Yes, the RTC oscillator can be used as a clock source for PLL0, however, when using PLL0 to drive the USB controller, the RTC cannot be used as the clock source. The reason it cannot be used for driving the USB controller is that an FREF less than 100 kHz will need to be used, and this causes a high jitter, which can cause a problem for PLL0.</SPAN></P></BODY></HTML> Thu, 31 Mar 2016 13:54:19 GMT lpcware-support 2016-03-31T13:54:19Z Can the RTC output be used for PLL0 input? https://community.nxp.com/t5/LPC-FAQs/Can-the-RTC-output-be-used-for-PLL0-input/m-p/466344#M78 <HTML><HEAD></HEAD><BODY><P><SPAN style="color: #646464; font-family: Arial, sans-serif; font-size: 12px;">Yes, the RTC oscillator can be used as a clock source for PLL0, however, when using PLL0 to drive the USB controller, the RTC cannot be used as the clock source. The reason it cannot be used for driving the USB controller is that an FREF less than 100 kHz will need to be used, and this causes a high jitter, which can cause a problem for PLL0.</SPAN></P></BODY></HTML> Thu, 31 Mar 2016 13:54:19 GMT https://community.nxp.com/t5/LPC-FAQs/Can-the-RTC-output-be-used-for-PLL0-input/m-p/466344#M78 lpcware-support 2016-03-31T13:54:19Z