On Mon, 14 Jul 2014, Grant wrote: > >> >> I should have been more specific then. I think I understand, but to > >> >> be sure, if I splice a USB cable, power VBUS with an external 5V power > >> >> supply, and connect a host and device, the device will work as if the > >> >> cable was connected to the host normally? > >> > > >> > Yes. But why do you want to do this? > >> > >> > >> My application calls for low noise so I'm hoping to feed a clean 5V > >> from a battery. > > > > Okay. Not much you can do about noise on the USB data lines, though. > > > Any ideas for minimizing that are most welcome. I suppose you could use a low-pass filter, with a cutoff frequency depending on the speed of the connection. How effective this would be is questionable, especially for high-speed (480 Mb/s) connections. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
