Teensy USB clock PLL: PLL_CONFIG() value

[Nathan J]

Hi, what do i have to modify in the teensy 2.0 core files to have the USB operate correctly with an 8Mhz Crystal?
My bust guess is that it has something to to with the PLL_CONFIG() line in USB_common.h
Using the default code causes the USB to fail.

 

[PaulStoffregen]

Maybe look at Dean Camera's LUFA library. It supports 8 MHz.