CDCLVC1310: The output phase change when switch between same phase source PRI and SEC clock input

Nick Dai

Part Number: CDCLVC1310

Hi Team,

There is a question from the customer for CDCLVC1310.

If the PRI and SEC are phase aligned,will the output clock phase change when switch the source between PRI and SEC?

Best Regards,

Nick Dai

0 Alan O over 8 years ago

Hello,

It was not designed to operate with glitch-free output during input switch event, so it is not guaranteed.

Regards,

Alan

0 Nick Dai over 8 years ago in reply to Alan O

Hi Alan,

Thanks for your feedback.

Do you have data that how long time the output can be stable when the input clock switch from PRI to SEC?

Could the customer use tEN(output enable time) as the output switch stable time?

Best Regards,

Nick Dai

0 Alan O over 8 years ago in reply to Nick Dai

I don't have data, but it should be similar to tDELAY (input to output prop delay) of 2~4 ns range.

Clock & timing forum