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AN12149 IEEE 1588 Sync Error

Question asked by Steven Keeter on Oct 24, 2018
Latest reply on Nov 13, 2018 by Steven Keeter


I have two i.MXRT1052 EVK boards and am running the firmware from AN12149.  I have the hardware configured just like the app note.  The PPS signals are on a scope and the offset is about 65nS and dithering approximately 50nS.  I have not edited any of the AN configured constants.  So, why do you think the AN12149 has a delta t of about 11nS and mine is a lot larger?  What would you recommend adjusting?  I'm still learning the finer details of the note but hoped NXP could offer suggestions quicker.


Thank you.