Atmel AT89C51SND1 User Manual page 7

AT89C51SND1 Reference Design User Guide
Figure 2-3. User Interface Overview
microphone
Play/Pause
Function (Func)
headphone
connector
Each LED may be:
OFF
Flashing (ON during less than 1 second and only one time)
Slow blinking (continuously)
Fast blinking (continuously)
ON
AT89C51SND1
Previous/Minus
Next/Plus
USB connector
Overview
ON (Pwr)
LED n° 1
LED n° 2
LED n° 3
LED n° 4
2-5
4207B–MP3–04/07