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LMX2594: SYSREF function

Part Number: LMX2594

Hello team,

I have a question about LMX2594 SYSREF.

We use like below 1) and 2).

1) Input a control signal to SYSREF which is not synchronized with PLL output

2) PLL_Port_B outputs a control signal without glitch which is synchronized with PLL output

Is there any requirement to a control signal of 1) in order to obtain 2), control signal without glitch?

For example, Trise/Tfall shoud be within ??ps, like that.

Please let me know if there is any requirements.

Best regards,