Hello,
Figure 15 of the LMX2592 datasheet suggests a very fast frequency change time of 20 usec.
Measuring the calibration time at the MUXout pin (with calibration status detect) gives a 3msec time @ 125MHz state machine clock.
Minimum time is 1.8 ms @ 200MHz state machine clock (Fast_Cal enabled).
So, measuring the complete frequency change time from the end of the transfer of a new frequency (rising edge of CSB) to the lock detect is around 2 msec (@maximum state machine clock, 200MHz).
That is far away from 20 usec of Figure 15 - Datasheet LMX2592.
Could you please give any advice what can be optimized here.
Best regads