DP83867IS: About Input Jitter Tolerance

user6150189

Intellectual 460 points

Part Number: DP83867IS

What is the input jitter tolerance for SGMII?
Is it 0.75 UI?

over 5 years ago

0 Cecilia Reyes over 5 years ago

TI__Genius 9920 points

Hello,

Thank you for your question about the DP83867. May I please ask what is the reason for your understanding of the tolerance? Do you have a specific design requirement and what are you measuring as your tolerance right now?

Thanks,

Cecilia

0 user6150189 over 5 years ago in reply to Cecilia Reyes

Intellectual 460 points

The reason why I understood the tolerance was because the jitter tolerant of other companies' SGMII IC was written as 0.75 UI.

Thank you.

0 Cecilia Reyes over 5 years ago in reply to user6150189

TI__Genius 9920 points

I am sorry I am not familiar with this unit of measurement. Can you please explain what you mean by 0.75 UI? Once I understand I can reach out to my internal team to confirm your request.

Thank you,

Cecilia

0 user6150189 over 5 years ago in reply to Cecilia Reyes

Intellectual 460 points

What is the total jitter that is acceptable? (200 psec, etc.)

Reference materials for 0.75 UI are as follows.

Thank you,

0 Cecilia Reyes over 5 years ago in reply to user6150189

TI__Genius 9920 points

I will need to reach out to our validation team to see if this is a spec that we can share.

I will get back to you in a few days as I will be out of office these next two days.

Thanks,

Cecilia

0 Cecilia Reyes over 5 years ago in reply to Cecilia Reyes

TI__Genius 9920 points

Hello,

Thank you for your patience. It looks like the DP83867 is also tested at 0.75UI for the input jitter tolerance.

Thanks,

Cecilia

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DP83867IS: About Input Jitter Tolerance