I've been wanting to add downstream USB ports to a few projects for some
time. To deal with this now and for the forseeable future, I decided to
put a 4-port hub on a DIP. The idea is that a so-called hub-on-a-chip
is merged with its support stuff onto a piece of PCB the size of a DIP-32
or probably a DIP-40. To add downstream ports to a design, put this
microhub after the female USB-B jack, then hang your gizmo[1] and female
USB-A jacks off the microhub.
How many of you would be interested in something like this? I have a
quick-and-dirty schematic at
http://frotz.homeunix.org/microhub/. The
.sch file is from gEDA and you'll need the TI symbols I just uploaded to
http://www.gedasymbols.org/user/david_griffith/.[1] Something using an AVR ATmega with V-USB
(
http://obdev.at/products/vusb/index.html) loaded on it.
--
David Griffith
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