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LMK03318: how to trigger VCO calibration?

Part Number: LMK03318
Other Parts Discussed in Thread: LMK03328,

Try toggling RESETN_SW bit low then high to re-initialize the device and trigger VCO calibration after programming the registers. 

but I don't konow how to trigger VCO calibration

I routed the N div signal to status1 PIN but there is no signal