Tool/software:
Hello TI Team,
Since we are planning to use a 25MHz oscillator as the input clock source for DP83TG720R, we'd like to know, which power rail should be used to supply the oscillator?
What is the maximum input voltage level on XI pin?
Thank you in advance.
Best regards,
Mehdi
Hi Mehdi,
Since we are planning to use a 25MHz oscillator as the input clock source for DP83TG720R, we'd like to know, which power rail should be used to supply the oscillator?
I would recommend having a separate voltage supply for the oscillator. I don't believe it's been tested being tied directly to the power supplies before.
What is the maximum input voltage level on XI pin?
Please refer to section 6.5 of the datasheet
Best regards,
Melissa
Hi Melissa,
Thank you for the quick response.
So the question is, if we set the VDDIO in our system to 1.8V, which voltage level should be used to supply the oscillator?
According to datasheet (see below), the power domain of XI pin is VDDA. We assume, the VDDIO could then be used to supply the oscillator. So could you please let us know if this is correct, or should it be always supplied with 1.8V?
Thank you in advance.
Best regards,
Mehdi
