Hello,
My customer is using CDCM6208, fPFD=40KHz and measuring Lock Up time.
According to calculation, it takes 6.4s form step 3 to step 5.
They are observing ~6.5s lock-up time, but sometimes it is ~half, 3.2s.
What could be a root cause?
If the default VCO range after power up matches desired value incidentally, Step 5(VCO calibration) could be skipped?
Best regards,
K.Hirano