DS90UB941AS-Q1: Layout Guidelines / App Note

Jason Maxwell

Tool/software:

Hi Team,

My customer is looking for any kind of layout recommendation app note or checklist for FPD-Link? They are using the DS90UB941AS-Q1, DS90UB947, and DS90UB948. Anything you can provide would be very helpful.

Best,

Jason

10 months ago

+1 Esther Chang 10 months ago

TI__Genius 17720 points

Hi Jason,

For general layout recommendations, you can refer to the datasheet 'Layout' sections.

We also have channel specifications for our FPD3 and FPD4 devices (in their case, it is FPD3). You can request it here - sps16.itg.ti.com/.../start.aspx

We also have IBIS models that can be downloaded from the ti.com for the respective device.

Here is also a 941as Bring up guide - 941as bring up guide.pdf

BR,

Esther

0 Jason Maxwell 10 months ago in reply to Esther Chang

TI__Intellectual 1695 points

Hi Esther,

Thank you for your response. I have requested access for the channel specifications information and shared with the customer the links you sent.

The customer mentioned that ADI has a massive document for how to layout and tune GMSL (which seems to be overly complicated according to the customer), so he wanted to see if we had anything similar.

He mentioned that he has already looked at the layout guidelines in the datasheet, but noted that they were showing via walls around the signals in the layout but did not see any sort of recommendations in the datasheet. This is what made him reach out to us thinking that we may have more complete guide/recommendations.

Best,

Jason

0 Esther Chang 10 months ago in reply to Jason Maxwell

TI__Genius 17720 points

Hi Jason,

We do recommend via walls to enhance ground return paths and improve heat dissipation.

Also, I found some system-level and automotive-level ESD application notes that can also help with the design process.

Automotive SerDes ESD Protection_SLVAF60a.pdf

0825.SNLA278_System level ESD Design guidelines for FPD-Link devices.pdf

We also do layout reviews after the customer has finished their layout (just submit an E2E).

BR,

Esther

0 Jason Maxwell 10 months ago in reply to Esther Chang

TI__Intellectual 1695 points

Thank you, Esther.

Best,

Jason

Interface

Interface forum

DS90UB941AS-Q1: Layout Guidelines / App Note