Intel X557 5th channel connection with discrete magnetics

[MarosM]

Hello,

we are connecting the X557-AT4 with discrete magnetics (integrated are not possible due to using different connector than RJ-45), and the datashet is not very clear on how to connect the  magnetics and termination properly for the 5th channel (see X557's datasheet at 9.1.3). No reference schematic has this implemented either, or better said, integrated magnetics (such as G13-152T used in the reference) do not reveal the circuit connection.

I did my best to make sense of the manual, and I came up with this circuit. Can you check if this schematic is done properly, the termination of channel D will work as intended and 5th channel will sense correct common-mode?

Also side question, how to acquire firmware for the X557? We have been denied IPS access multiple times for no stated reason and have been redirected to "distributors" - I very much doubt that e.g. Mouser will provide us with the firmware...

Thanks!

[Azhari_Intel]

Hi MarosM,

Thank you for contacting Intel.

We appreciate you reaching out to us regarding the reported issue. While we do want to assist you, however our team can only assist with technical issues and warranty requests for Intel products. As this is design-related and to ensure you receive the most specialized assistance, we have a dedicated forum that addresses your concerns. 

Hence, we recommend engaging and opening a new thread with the Intel Embedded Community for further support:

https://community.intel.com/t5/Embedded-Connectivity/bd-p/embedded-networking-connectivity

This will allow our knowledgeable community and experts to provide you with timely and accurate solutions.

Please let us know if you have any further concerns.

Regards,

Azhari_Intel

[MarosM]

Hi Azhari,

you can close this as a duplicate, I was asked to do the same in the previous post with a link and I did that, but it ended up in this forum for some reason....

[IntelSupport]

Hi MarosM,

Thanks for the confirmation, we will proceed to close the case.

Regards

Jerome

Intel Customer Support Technician