The Pin Interface section of the Intel® Ethernet Controller X550 Datasheet lists VCCA pins as 1.0V power pins. Except from this, the pins are not mentioned at all in the document. The Electrical/Mechanical Specification section only describes 4 voltage rails:
VCC3P3, VCC2P1, VCC1P2, VCC0P83. From the reference schematics it looks like these pins should only connect to decoupling capacitors and no voltage source. Is this correct? Where is it documented?
Thank you for posting in Wired Communities. Let me check on this. Just to double check also are you referring to the diagram on page 1035 of the datasheet?
Page 1035 contains Figure 13-7. Power Supply Delivery Network. This does not mention the VCCA pins.
I am missing information in section 12.3 Power Delivery (starting on page 1000) where all other power rails are specified.
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