I have some question with lmh983 Alignment Control – TOF1 register. In the datasheet , the regeister bit 3:2 meaning is :
This bit sets the PLL1/TOF1 output synchronization behavior
when the same reference is reapplied following a momentary
LOR condition and TOF1 is within 2 lines of the expected
location.
00 = Always Drift Lock – ensures the outputs drift smoothly
back to frame alignment without excessive output phase
01 = Drift Lock if output < (2LOA_window x 27 MHz Clock). Crash
Lock otherwise.
1X = Always Crash Lock – achieves the fastest frame
alignment through PLL/TOF counter resets, which can result in
output phase disturbances
i want to know if the TOF1 is without 2 lines of the expected location, how the part will realigned the tof to ref.
