STM32N645I0H external clock source question

[HMüll.4]

I’m currently trying to design a STM32N645I0H based board with LAN8742A Ethernet. Right as for the STM32H723 I would prefer to have one NZ2520SH-25MHZ-END4869C 25 MHz crystal for both, the MCU (fed into OSC_IN) and the PHY. The application note says, this is possible and for such kind of analogue clock input OSC_OUT has to be tied to VDD via a 1K resistor.

 

What the AN does NOT say: which VDD is meant? The 3.3V rail or the 1.8V rail?

 

[KDJEM.1]

Hello ​@HMüll.4 ;

 

Which app are you talking about?

Can you please specify the application note number and section?

 

Thank you.

Kaouthar