TUSB216: About “edge boost along with DC boost” and “RX sensitivity”

Hide

Guru 21045 points

Part Number: TUSB216

Hi Team,

We would like to know about function of TUSB216

-edge boost along with DC boost

-RX sensitivity

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[Q1]

What is the effect of "edge boost along with DC boost" and "RX sensitivity" on USB eye pattern?

My understanding is as follows.

Is my understanding correct?

[Q2]

Could you please let us know the operating principle of "edge boost along with DC boost" and "RX sensitivity"?

Especially, would like to know about “RX sensitivity”.

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Regards,

Hide

over 2 years ago

+1 Malik Barton57 over 2 years ago

TI__Guru 64326 points

Hi Hide,

Your understanding is correct, BOOST setting improves both the high frequency and low frequency components increasing/correcting eye height. RX sensitivity does clean some ISI jitter from the eye. I cannot post detailed theory of operation on e2e.

0 Hide over 2 years ago in reply to Malik Barton57

Guru 21045 points

Hi Malik-san,

Thank you for your prompt reply and infromation.

Regards,

Hide

0 Malik Barton57 over 2 years ago in reply to Hide

TI__Guru 64326 points

Hi Hide,

No problem.

0 Wajih Youssef over 2 years ago

Intellectual 535 points

Hi Hide,

Can you please tell me where did you find that figure ?

0 Malik Barton57 over 2 years ago in reply to Wajih Youssef

TI__Guru 64326 points

Hi,

You can find eye diagrams in section 8.2.3 Application Curves of the TUSB216I datasheet.

0 Wajih Youssef over 2 years ago in reply to Malik Barton57

Intellectual 535 points

Okay Malik, thanks

0 Malik Barton57 over 2 years ago in reply to Wajih Youssef

TI__Guru 64326 points

No problem!

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TUSB216: About “edge boost along with DC boost” and “RX sensitivity”