The fractional N frequency synthesizer 1 wherein the coarse tuning logic further comprises {HEAD ~ tuning logic} adapted to compare a frequency of the divided reference signal and {TAIL ~ a frequency} of the divided CO signal and effectuate coarse tuning of the CO based on the comparison 
adapted to compare
The fractional N frequency synthesizer 1 wherein the coarse tuning logic further comprises { HEAD ~ tuning logic } adapted to compare a frequency of the divided reference signal and { TAIL ~ a frequency } of the divided CO signal and effectuate coarse tuning of the CO based on the comparison
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH