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MC13234 LO Unlock Condition, How Bad Is It?

Question asked by Matt Hammond on Jan 8, 2016
Latest reply on Jan 12, 2016 by Earl Orlando Ramirez Sanchez

I'm having a problem where a small subset of boards utilizing the MC13234 end up with an LO unlock condition (as indicated by the STATUS2 register). It seems that maybe 1/100 boards will exhibit this condition, and the condition usual presents itself within the first 50 or so transmissions, and is repeatable when the boards are reset. The other 99/100 boards never seem to present the LO Unlock condition.


I'm wondering what exactly the LO unlock means as it pertains to the performance/reliability of the device. Is this sort of a normal thing to see every once in a while, and I should just reset the radio and continue as normal, or can it be indicative of a bigger problem? Are there external factors that can increase the likelihood of LO unlock (e.g. a swapped component leads to an improperly impedance matched antenna port)?