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I225/I226 MDI Lane polarity inversion

Venkat444
Beginner
‎09-10-2025 11:14 PM
538 Views

Hi Team,

 

We are using the Intel I226 Ethernet controller in our new design. I would like to confirm whether the I226 supports MDI signal polarity inversion (i.e., P ↔ N swap on a differential pair).

I am already aware that the controller supports ABCD ↔ DCBA lane swapping. My question is specifically about intra-pair polarity swap support.

 

Thanks in advance.


Best Regards

Venkat

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Amina_Sadiya
Employee
‎09-11-2025 08:15 AM
497 Views

Hello Venkat444,


Greetings from Intel!


Thank you for contacting Intel for your inquiry, Regarding your query I would like to inform you that the information that you are looking for is a part of a document which is 'Intel Confidential' and are not publicly available. These documents are published through the RDC (Resource & Documentation Center), which requires a CNDA (Customer Non-Disclosure Agreement) for access. Please let us know if you have an active CNDA signed with Intel.


If you do not have an Intel® Resource and Documentation Center(RDC) and/or Intel® Developer Zone (Intel® DevZone) account, kindly refer to the link below. Please bear in mind that you will need a premier account with CNDA access in order to access the files.


https://www.intel.com/content/www/us/en/support/articles/000058073/programs/resource-and-documentation-center.html


Additionally, I would like to inform you that we are checking internally to see if the information you are looking for is publicly available and keep you posted on the same.


Also please confirm the exact controller model that you are using.


Best regards,

Amina

Intel Customer Support Technician



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Amina_Sadiya
Employee
‎09-15-2025 01:39 AM
362 Views

Hello Venkat444, 

 

Greetings from Intel! 

 

This is a reminder regarding the issue you reported to us. 


We are eager to ensure a swift resolution and would greatly appreciate any updates you can provide regarding the information we have requested. 

 

Please feel free to respond to this email at your earliest convenience. 

 

Regards,  

Amina  

Intel Customer Support Technician  



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Amina_Sadiya
Employee
‎09-19-2025 12:50 AM
261 Views

Hello Venkat444,


Greetings from Intel. 


This is the third follow-up regarding the reported issue. As we have not heard back from you, we'll assume the issue has been resolved and will proceed to close the case. 


Regards,  

Amina  

Intel Customer Support Technician  



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