DP83822I: Terminal Resistance with Fiber

Yazhu Liu

Intellectual 1410 points

Part Number: DP83822I
Other Parts Discussed in Thread: TIDA-00928

Hi Team,

May I ask about recommended terminal resistance setting when using DP83822I with Fiber?

In TIDA-00928, it's 130ohm pull up and 80.6ohm pull down.

But in DP83822I EVM, it's 82ohm pull up and 130ohm pull down. Which one should customer refer to?

Best Regards,

Livia

over 4 years ago

0 Nikhil Menon over 4 years ago

TI__Genius 11725 points

Hi Livia,

I am looking into your question and will provide additional feedback by tomorrow.

Thank you,

Nikhil

+1 Nikhil Menon over 4 years ago in reply to Nikhil Menon

TI__Genius 11725 points

Hi Livia,

Apologies for the long delay. This value may be specific to the biasing between the LVDS/LVPECL signaling. This value may be dependent on the SFP or fiber transceiver used.

Thank you,

Nikhil

All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and it is subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml).

+1 Nikhil Menon over 4 years ago in reply to Nikhil Menon

TI__Genius 11725 points

Hi Livia,

Are there any additional questions for this query? If not, I will be closing this thread.

Thank you,

Nikhil

0 Yazhu Liu over 4 years ago in reply to Nikhil Menon

TI__Intellectual 1410 points

Hi Nikhil,

Thanks for the support, no further question from my side, please go ahead and close the thread.

Best Regards,

Livia

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DP83822I: Terminal Resistance with Fiber