Howdy,

We’re utilizing Intel Ethernet Controller I210-AT in our design. We’re the OEM.

We selected to make use of an oscillator for the clock enter. Determine 11-9 from web page 800 of the I210_Datasheet_v_3.7 doc (web page 796 of the pdf) is copied under and reveals two values for the oscillator AC coupling capacitor: “C1 = 100pF or 51pF.” It’s complicated that two totally different values are given for C1.
Does every C1 capacitance worth (100pF or 51pF) correspond to one of many proven VCC voltages: “VCC = 2.5V or 3.3V?” or can both capacitance worth be used with both VCC voltage?

What worth ought to C1 be for a 3.3V oscillator?

Hyperlink to the datasheet:

https://www.intel.com/content material/www/us/en/content-details/333016/intel-ethernet-controller-i210-datasheet.html?wapkw=i210percent20datasheet

Thanks.