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Originally Posted by bigbop
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You'll KILL the device if you use 5V on the interface chip:exc: :exc:
Look carefully at the schematics - you'll find that the line labelled USBH)_VBUS is NOT connected. This is VERY important. You need to remember that you will be interfacing 3V and 5V signals.
Let me do some research on the interface chips before you start publishing schematics that someone might use and kill their PDA. I know you want to get this figured-out quickly - but you don't want to kill anything either.
Also, have a look at this great reference: http://www.educypedia.be/computer/pc...reportsusb.htm
and here: http://www.usb.org/developers/
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In fact I wasn't sure about VBUS.
Just in case I fixed the drawing.