12-21-2021 02:45 AM
I have some questions regarding the intel I225-IT Ethernet Controller's power supply:
- In the datasheet, it says w.r.t. +3.3V_PAD Pad-Voltage Domain Supply:
Note: Short cutting this voltage domain with others of same nominal value is not allowed
on the I225/I226. For optimal power-consumption figure of merits, the lowest
possible voltage must be selected in the system.
But in the reference schematic, the +3.3V_PAD pin is indeed connected with the other +3.3V pins. So is it ok to connect +3.3V_PAD to the other 3.3V pins as in reference the schematic?
- How large is the maximum current draw of the I225-IT?
I.e. what is the current, that the +3.3V_LAN supply must be able to deliver?
The datasheet lists the maximum power at ~2W, but I suppose this is an average value, is it According to the PCIe spec, the PCIe 3.3V rail supplies up to 3A. Would this be sufficient to supply 4 I225's (i.e. a quad port NIC) ?
Thanks in advance for your help.
12-21-2021 07:52 AM
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12-07-2022 02:32 PM