Ron K. Jeffries rjeffries at
Thu Feb 18 00:22:48 EST 2010


I am confused.

Ben uses Xburst 4720
4720 supports USB 1.1 host

but.... (drum roll please)

Ben only supports USB 1.1 Device

What am I missing?

Is supporting USB Host on next Nanonote
primarily a software issue?

Or is it how the port is wired, with Ben not having
the necessary extra traces, or maybe  Ben
uses the "wrong" (for host mode) physical USB connector?

Thanks in advance for your patience answering possibly dumb questions. I am
(obviously) not an engineer.

Ron K. Jeffries

On Wed, Feb 17, 2010 at 10:53, Wolfgang Spraul <wolfgang at> wrote:

> Ron,
> > I assume it is OK to ask how USB host is implemented on
> > the AVT2, since the Xburst does not support host mode.
> 4720 (as in the Ben NanoNote) has a USB host controller (1.1 though), same
> as 4740.
> 4725 does not, neither do any other QFP variants from Ingenic.
> They decided that QFP should be differentiated by not having USB host
> (it's on the die, but not wired out). They regret this decision now but
> that's how it was made.
> Wolfgang
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the discussion mailing list