DP83867IR: For crystal input level

Lee, Sam

Part Number: DP83867IR

Hi team,

The level on the XI pin of DP83867 is observed as 3.2Vp-p. Is it okay or not? There is not detailed spec for crystal in the datasheet.

Thanks,

Sam Lee

over 6 years ago

0 Lee, Sam over 6 years ago

TI__Expert 4965 points

Hi team,

Can you confirm it? Does the level of XI depend on VDDIO? (The system uses 3.3V for VDDIO.)

Thanks,

Sam Lee

0 Rob Rodrigues over 6 years ago in reply to Lee, Sam

TI__Mastermind 19780 points

Hi Sam,

Are you using a crystal or an oscillator? Your schematic shows a crystal.

If you are using a crystal, then the voltage swing is OK.

For an oscillator, the Vp-p on the XI pin should be 1.8 V.

Thanks,

0 Lee, Sam over 6 years ago in reply to Rob Rodrigues

TI__Expert 4965 points

Hi Rob,

Thank you for your answer. They're using a crystal.

Best Regards,
Sam Lee

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DP83867IR: For crystal input level