* the timer output (timer 3 for the AT90USBXXX6/7 USB AVRs, timer 1 for\r
* the AT90USBXXX2 controller AVRs) compare channel A for AUDIO_OUT_MONO\r
* mode, on channels A and B for AUDIO_OUT_STEREO and on the board LEDs\r
* the timer output (timer 3 for the AT90USBXXX6/7 USB AVRs, timer 1 for\r
* the AT90USBXXX2 controller AVRs) compare channel A for AUDIO_OUT_MONO\r
* mode, on channels A and B for AUDIO_OUT_STEREO and on the board LEDs\r