PORTS Forum

Ports and Interfaces => USB => Topic started by: titan_amit on June 05, 2011, 06:13:26 am

Title: How does a host controller detect speed of USB 3.0
Post by: titan_amit on June 05, 2011, 06:13:26 am

I wanted to know how does a host controller detect speed of USB 3.0, e.g.
 Slow speed-  D- high,
 Full speed-  D+ high,
high speed- first D+ high then D- high,
whats the combination in USB 3.0?

Title: Re: How does a host controller detect speed of USB 3.0
Post by: Pat Crowe on June 05, 2011, 09:31:26 am

You should look at the USB 3.0 specification. USB 3.0 adds new wires to carry the SuperSpeed data.