Overview of Modes
AT89C51SND1 Reference Design User Guide
3-9
4207B–MP3–04/07
In order to leave this state, the Play/Pause button must be pressed.
Do not disconnect
the cable before leaving USB Mode.
3.4
Erase Mode
When this mode is validated by pressing Play/Pause button, all LEDs are OFF during
the erasing and reformatting of the full on-board mass storage system. LED n°4 will be
ON when this operation is performed.