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LMX2594: Relock after Reset control by register

Part Number: LMX2594

I would like to ask about resynchronization (Relock) after reset control.

The initial setting procedure follows the datasheet section 7.5.1.

When the initial setting is performed after turning on the power, the expected frequency is output and the synchronization status (R110[10:9]) becomes "2: Locked".

However, if the Reset control (R0[1] register) is performed after that, it will not resynchronize (Lock) even if the initial setting of the register is performed again.

The synchronization status (R110[10:9]) at this time was "3: Unlocked (Vtune High)".

I would like to have a comment on the reason why it is not possible to lock again after reset.