DP83822I: Connecting transformer center tap to VDDIO

Roy Hsu

Part Number: DP83822I

Hi Team,

Although the datasheet states that center tap of the transformer must be connected to AVD, is it also OK if I connect it to VDDIO? (VDDIO = 3.3V)

Thanks!

Roy

0 Alvaro (Al-vuh-roe) Reyes over 2 years ago

Hi Roy,

It has to be AVD, even if the voltage level is the same.

Regards,

Alvaro

0 Roy Hsu over 2 years ago in reply to Alvaro (Al-vuh-roe) Reyes

Hi Alvaro,

Got it but what's the reason behind it?

Thanks!

Roy

0 Alvaro (Al-vuh-roe) Reyes over 2 years ago in reply to Roy Hsu

Hi Roy,

It's because the IOs are connected VDDIO and their constant toggling creates more noise that may impact device behavior,

Regards,

Alvaro

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