PORTS Forum

Ports and Interfaces => USB => Topic started by: lt on July 28, 2011, 04:24:14 am

Title: Link training?
Post by: lt on July 28, 2011, 04:24:14 am

I really want to know how the link training acts...After attchment,which state is the port in?What should the host and device do first?

please assist me...

thanks!

Title: Re: Link training?
Post by: Jan Axelson on July 28, 2011, 10:18:10 am

Start with section 7.5 in the USB 3.0 spec, which includes a state diagram for link training.

Jan

Title: Re: Link training?
Post by: lt on July 28, 2011, 08:21:21 pm

Thanks a lot!

But i want to know what should the software and hardware do?For example,is the LFPS tranferred by hardware ?and TSEQ?

Title: Re: Link training?
Post by: Jan Axelson on July 28, 2011, 09:18:54 pm

The PHY and XHCI specs here might also be helpful:

http://www.intel.com/technology/usb/spec.htm

Jan

Title: Re: Link training?
Post by: lt on July 29, 2011, 04:29:13 am

Thanks!

I think i need learn more about hardware...