HD3SS3202: USB IF certification or compliance test result

Terry:

       we should tested compliance before. but it's pretty old and can't find where it was  located. But it should pass USB3 compliance  before release it.

Regards

Brian

Hi Brain,

Thanks for your reply.

My customer has an USB communication issue in their product.

While 5G wireless communication is processing, USB communication "ss.inactive" error occurred.

They doubt the issue is related to USB signal loss by MUX HD3SS3202. That's why they asked for our USB compliance test result.

BTW, I have asked customer to send me schematic and PCB to review. 

Do you have any advise or checklist regarding schematic and PCB review. Or any other comment for this issue.

Thanks and regards.

Terry

Hi Brain,

One more question.

In HD3SS3202 datasheet chapter 9.2.1.2 Detailed Design Procedure has description below:

The device can support 1 to 2 inches of board trace and a connector on either end.

What exactly is the trace mean?

My customer's whole trace route is CPU-MUX-USB connector-Fan IC.

1 to 2 inches refer to the whole trace? or a specific portion?

Thanks and regards

Terry

 PCB trace  is a copper conductor on the PCB that conducts signals on the surface of the PCB. how long  is trace length on their board?

Are they running 5Gbps or 10Gbps.

regards

Brian

Hi Brian,

They are running 5Gbps. Do you have guidance with trace length?

In my customer application, their trace route is CPU(host)-MUX(HD3SS3202)-Connector-Fan IC(device).

Do you have suggestion about the trace length for each portion? Such as the length between CPU and MUX, MUX and connector...

Thanks.

Terry

Is it type-C application?

so it only allow 6.5db  loss on host device side. Hd3SS3202 has -1.3db loss at 2.5Ghz.

so you only have 6.5-1.3=5.2 db loss from CPU to connector (include connector loss). about 10 in trace length

Regards

Brian

Hi Brian,

Thanks for your Patience. Yes, it is type-C. 

And let me confirm the trace length again. You mean 10 inch from CPU to connector, right?

I am a little confused cause in the datasheet of HD3SS3202 page14, it has a description "The device can support 1 to 2 inches of board trace and a connector on either end." I am curious 1 to 2 inches here means which portion of the board trace.

Best regards

Terry