CDCVF2505: Unlocked state of PLL

Masahito Takei

Part Number: CDCVF2505

Is there a case where the built-in PLL does not recover from the unlocked state?

If there is such a case, please tell us about the following.

・Occurrence conditions
・A rate of incidence
・Recovery method

over 5 years ago

0 Kia Rahbar over 5 years ago

TI__Expert 8665 points

Hello,

Is there a specific situation where the CDCVF2505 is not locking? Could you please provide an explanation on why the device is in an unlocked state? I will be able to provide you with more assistance once more details are provided.

If you are curious about the general process for recovering from the unlocked state, there is a great document on TI's E2E website that provides procedures on how to troubleshoot your device.

The link is as follows: What to do when your PLL does not lock

Regards,

Kia Rahbar

0 Masahito Takei over 5 years ago in reply to Kia Rahbar

Intellectual 300 points

The situation where the CDCVF2505 is not locked has not occurred so far.
Is the CDCVF2505 guaranteed to be locked with a continuous clock input?

Please let me check if it will continue to operate when it is not locked.

Regards,

0 Kia Rahbar over 5 years ago in reply to Masahito Takei

TI__Expert 8665 points

Hello,

It is good that the CDCVF2505 is not unlocked.

As long as CLKIN has a fixed frequency and fixed phase the CDCVF2505 will remain locked.

Regards,

Kia Rahbar

Clock & timing

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CDCVF2505: Unlocked state of PLL