On Wed, Jan 31, 2007 at 08:20:04AM -0700, Joe Pfeiffer wrote: > Robert Michel writes: > >> > >> Brilliant! Thanks for that :-) > > > >So now the question, how does an USB hub work? > >Can we plug in the host on any port? > > Short form: USB is strictly a hierarchical, tree-structured network. > There is one host, which may connect to the upstream port on a hub; > you can then plug in more hubs and devices downstream of the hub. > They were very careful when writing to the standard to specify cables > that can't plug in the wrong way: you can only plug a host into the > (single) upstream port on the hub. > > Long form: > http://viper.cs.nmsu.edu:8000/classes/473/notes/usb.php?currentsem=s06 > > Really long form (this is the USB 2.0 specification) > http://www.usb.org/developers/docs/usb_20_05122006.zip > > >The Neo1973 will have mini-USB-B > > > >normal hubs powered USB-A for the adapter > >and one unpowerd USB-B for the host. > > My understanding is that it will be USB On-The-Go,
No. OTG is a complex specification, and it comprises way more than just a AB socket, but also electrical and software components which we cannot provide using the S3C2410. All you need is a special Mini-B to regular-B cable, which you then can plug in the upstream port of any regular self-powered USB hub. You can then use any (low-speed,full-speed) usb device on that hub. But that normal hub will not charge the phone, though. FIC product development is looking in providing something that conveniently solves this problem. I cannot say more than that at this point :) -- - Harald Welte <[EMAIL PROTECTED]> http://openmoko.org/ ============================================================================ Software for the world's first truly open Free Software mobile phone _______________________________________________ OpenMoko community mailing list [email protected] https://lists.openmoko.org/mailman/listinfo/community
