Blackcat USB schematic Working!
For people who want to reuse there at90usb162 based dongles.
So this is one of many things that can be done with them.
I know some guys paid arm/leg plus left testi!! :facepalm:
Completed and working for Ejtag - SPI untested.
I've used this to re-flash modem and worked fine.
If i get SPI modem i'll test again and post back.
Just remember SPI 3.3v not full USB 5v!! So i warned you :)
I would suggest cutting track where power comes in (USB)
Then take power from target. I'd leave GND connected.
That would work for Ejtag to.
The eagle layout does work, its what i used. Not very pretty :)
I haven't put a jumper on it. I'd already made mine before i started this.
Thanks for help/comments and hope you find it useful.