Re: [Gumstix-users] Overo Earth and USB Full-speed

[Ben M. <b.m...@la...>]

Is it possible to directly solder a USB device to the USB host without
removing the existing host ports on either the Tobi or Summit board? I can't
tell how this would be possible from the schematics, but want to avoid
having to remove the existing port in case I damage the board.

Cheers,

Ben

 

> -----Original Message-----
> From: Neil MacMunn [mailto:ne...@gu...]
> Sent: 29 November 2010 22:40
> To: General mailing list for gumstix users.
> Subject: Re: [Gumstix-users] Overo Earth and USB Full-speed
> 
> The USB OTG port supports Low-Speed/Full-Speed/High-Speed at 100mA. USB
> host is High-Speed only up to 500mA. A hub (on-board or external) will
> allow you to connect Low-Speed or Full-Speed devices to the host port.
> 
> 
> Neil
> 
> 
> 
> On 10-11-27 11:51 PM, Garry Allen wrote:
> > I am guessing since i dont work for the company that they couldn't
> find a usb transceiver that supported low speed and full speed in the
> package they wanted. So we have a high speed USB port. The OTG port is
> separate. Plugging a powered USB hub into the high speed port works. I
> do think that they havent provided enough capacitance on the 5V line.
> TI recommends at least 100uF on each usb port for their USB hub chips.
> > On 28/11/2010, at 5:46 PM, Yoav Luft wrote:
> >> But using a hub won't make the USB On The Go feature useless?
> >>
> >> On Sat, Nov 27, 2010 at 9:03 PM, Garry Allen
> >> <boo...@op...>  wrote:
> >>> buy a 4 port powered USB hub from your local computer shop. This
> will support low and full speed devices
> >>> On 28/11/2010, at 5:55 AM, Yoav Luft wrote:
> >>>
> >>>> Hi,
> >>>> It seems like my overo earth board does not like usb full-speed
> >>>> devices. Is my observation is correct? It seems strange to me that
> it
> >>>> does not support USB full speed devices, as they are so common. Is
> >>>> there some work-around? Will it ever change?
> >>>>
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> Tap into the largest installed PC base & get more eyes on your game by
> optimizing for Intel(R) Graphics Technology. Get started today with the
> Intel(R) Software Partner Program. Five $500 cash prizes are up for
> grabs.
> http://p.sf.net/sfu/intelisp-dev2dev
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