[i350-T4] PPS output

[Tomas789]

Hi,

I have considered to use the network adapter I350-T4 to test our PTP software. It seems that traffic somehow works, but I could not find the pin used as PPS output on the network adapter to measure accuracy of synchronized devices.

I also tried this on network adapter I210, there is an socket with 6 pins, and I have attached to one of them (configured in Linux as SDP) and I was able to measure the PPS signal of both devices connected together.

So my question is, where can I find the physical pin on network adapter I350-T4 to configure them as PPS output and I can attach them (similar situation as in case of I210)?

I have found the datasheet to the ethernet controller I350, there is support of SDP pins, but there is no schematic.
The images of the card are attached.

Thank you

[Vik3]

Hello Tomas789,

Thank you for posting on the Intel Community.

To assist you further, please provide the following details:

1. Provide the complete system details with model number and making.

2. Please confirm if the NIC was purchased separately or pre-installed.

3.Kindly provide more details about the issue.

Additionally, please refer to the following sections in the document:

• 2.2.5 Miscellaneous Pins
• 2.6 Interface Diagram

Ethernet Controller I350 Datasheet

Feel free to reach out if you need any further assistance.

Thank you for using Intel products and services.

Regards,

Vikas

Intel Customer Support Technician

[Tomas789]

Hi Vikas,

System: Debian 6.1.128-1
HW:  dell 3960 + Intel adapter I350-T4 (added separately)
You can find all product identification (serial number) on the picture at my first message. I do not have more numbers or details as you can find on the picture.

Our scenario contains 2 devices connected together. On both devices is running ptp4l application to synchronize HW 1588 clock.
1. PC with network adapter I210

2. Dell server with network adapter I350-T4 

The clock is synchronized, I can see it in the system. But I need to know the accuracy of synchronization in nano-sec, by measurement both 1PPS output signals. 

Most of the network adapter (1588 timer capable) are having 1PPS output or SDP (Software defined pins) where the role of the pin should by configured in runtime by OS. By 2 commands in Linux I am able to configure SDP pin as 1PPS output on the network adapter:
./testptp -d /dev/ptp0 -L 0,2   //sets the first SDP (SDP_0) pin as 1PPS output

./testptp -d /dev/ptp0 -p 1000000000 -w 4095   //set the frequency and with of period of result signal as 1PPS

I210 have 6-pin header, there are all SDP pins located, so my oscilloscope is attached here.

My problem is, that I have no idea where the physical SDP ports are located on the adapter I350-T4, there is no pin header.
That is what I am asking for, to send to me part of schematic or picture, where can I find the SDP pins to be able do the measurement.

I saw the documentation so as interface diagram, but it still do not telling me, where the pins are located on the adapter. 

Thanks for your time.
Tomas.

[IntelSupport]

Hello Tomas789,

Greetings for the day!

Thanks for sharing the information, we will check with our internal team and update you as soon as possible.

Regards

Jerome

Intel Customer Support Technician

[Tomas789]

Hi,
any updates?
Tomas

[Fikri_Intel]

Hi Tomas789,

Upon checking internally, this information is included in our design checklist and reference design for I350. Both are available on RDC, however, you will need access as both require NDA.

We recommend you sign up for RDC access using your CNDA number below link:

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

Once you have access to the RDC, please download the below file:

Intel i350 Design Checklist: https://cdrdv2.intel.com/v1/dl/getContent/597705?wapkw=597705 

Intel i350 Reference Design: https://cdrdv2.intel.com/v1/dl/getContent/323852?wapkw=32385

Regards,

Fikri O.

[vij1]

Hello Tomas789,

Thank you for joining the community,

I hope this message finds you well. I am just sending a follow up if you have any questions from the previous post. If so, please let us know.

Regards,

Vijay N.

[Vik3]

Hello Tomas789,

Greetings for the day!

We are following up to check if you were able to find the information we provided. Kindly confirm at your earliest convenience, so that we can continue assisting you in resolving this matter.

Best regards,  

Vikas  

Intel Customer Support Technician 

[Vik3]

Hello Tomas789,

Greetings!

We would like to inform you that we are closing this request due to no response being received for our previous follow-ups. Please don’t hesitate to reach out with any further questions in the future. Feel free to start a new conversation, as this thread will no longer be monitored.

Best regards,  

Vikas  

Intel Customer Support Technician 

[Tomas789]

Hello,
I am sorry for late response, but I was busy. I sign up in RDC and I am able to find the reference design. But I need to know the real position on the PCB, where I can find the PPS signal, which slots.

Thanks.
BR,
Tomas.