CDCI6214: Output clock frequency is incorrect / wrong settings?

Tobias Heil21

Prodigy 40 points

Part Number: CDCI6214

Hi TI-Team,

I am trying to get 270 MHz out of a CDCI6214.

I have used the TICS Pro to get the settings for that. After running the wizard I get the following configuration:

However with this configuration I am getting ~232MHz at all the output ports.

We are using a 27MHz LVCMOS clock as input reference which is clean.

Do you have any idea what we are doing wrong?

Thank you very much

Tobias

over 7 years ago

0 Lane Boyd over 7 years ago

TI__Genius 16845 points

Hi Tobias,

Is the PLL still unlocked? If so, the PLL will need to be recalibrated by writing to the recal bit. If you using the TICS Pro GUI, simply click the Re-CAL button.

Kind regards,
Lane

0 Tobias Heil21 over 7 years ago in reply to Lane Boyd

Prodigy 40 points

Hi Lane,

thank you very much!
I used the Tool only to get the settings, it was not connected to the device.
So the PLL unlocked status from the tool was not significant.
However writing the recal bit manually just solved it for me.

BR
Tobias

Clock & timing

Clock & timing forum

CDCI6214: Output clock frequency is incorrect / wrong settings?