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Originally Posted by Schlachter
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Are you talking about the pins on the bottom of the axim? People have already done pinouts on those, and a few are unused (doubtful that they're usb though, someone would have found that out by now). So... unless you buy a ratoc card, you're going to have to open your axim to get usb...
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There have been a handful of users, including myself, who have been mapping out the sync connector pins. All of us are still wondering what the 4 pins around the USB client are for. Pins 18, 19, 20 & 24 appear to be connected to something. That is what I'm going to find out. For an external USB host interface, you need D+, D-, enable/disable and overcurrent detect - hmmmm - 4 pins.:approve:
They might also be a JTAG interface, used to flash the firmware during manufacture.
As for
mbloof's post about testpoints, have a look down the side of the PCB adjacent to the CPU area. I'm going to find out what those are for.
I'm going to pull apart my E750 expansion port to see how Toshiba set up their USB host interface. I think it was done inside the PDA though because I have a host USB cable that plugs directly into the sync connector. The cable has a built-in 5v jack but I don't recall if there were any interface electronics in the shell housing.