X550-AT2 VCCA pins

[TMels]

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?

Terje

[idata]

Hi Tmelsom,

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?

https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/ethernet-x550-datasheet.pdf https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/ethernet-x550-datasheet.pdf

Regards,

Sharon T

[TMels]

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.

Best regards,

Terje

[idata]

Hi Tmelsom,

Thank you for the clarification. I will further check on this.Regards,Sharon T

[TMels]

Hi Sharon,

Have you made any progress on this?

Regards,

Terje

[idata]

Hi Tmelsom,

Thank you for the follow up and apologize if there is any delay. Please register at our Resource and Design center at https://www.intel.com/content/www/us/en/design/resource-design-center.html to gain elevated access to the documents available there or you may try to post the inquiry at our embedded support at http://embedded.communities.intel.com/ for them to better assist on this.Regards,Sharon T