Si5347D-D how to force into freerun? on
Clock Generator, Buffer, Crystal Oscillator Forum
We have a board with Si5347D-D on it.
It works fine, but we haven't find how to force one (or all) PLLs to go into freerun mode by registers access?
NOT holdover, 100% freerun with frequencies sourced from external XO.
This is required when input have some frequency and it can be locked, but the source of frequency is wrong and should be replaced by XO' sourced frequency.
We have SPI access to Si5347D chip, so best way is to find what registers should be changed to give us what we need.
Thank you in advance for any help.
Feb 02 2021, 3:26 PM