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Does USB3.0 use USB2.0 DP PM lines?

post #1 of 4
Thread Starter 
Just curious what would happen if, say the USB2.0 DP/DM pins were damaged. Would a USB 3.0 device still function at full speed? I'm trying to read the USB spec docs, but no luck finding anything. I thought I remembered somewhere that USB3.0 and USB2.0 controllers are different chips on the same port.
post #2 of 4
Considering the extra pins present in a usb 3 plug do not have power, I am gonna say that the 4 pins from the standard USB plug are required.
post #3 of 4
Thread Starter 
Quote:
Originally Posted by thrasherht View Post

Considering the extra pins present in a usb 3 plug do not have power, I am gonna say that the 4 pins from the standard USB plug are required.
Yes power is required. But I am only asking about the DP/DM lines (data +, data -).
post #4 of 4
I think they are required for the initial connection and negotiating up to usb 3.0 speeds.
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