AT8xC51SND2C
Signal
Name
Alternate
Function
Type
Description
PLL Supply voltage
Connect this pin to +3V supply voltage.
PVDD
PVSS
UVDD
UVSS
PWR
-
-
-
-
PLL Circuit Ground
Connect this pin to ground.
GND
PWR
GND
USB Supply Voltage
Connect this pin to +3V supply voltage.
USB Ground
Connect this pin to ground.
Table 14. Audio Power Signal Description
Signal
Name
Alternate
Function
Type
Description
AUDVDD
PWR
Audio Digital Supply Voltage
-
-
Audio Circuit Ground
Connect these pins to ground.
AUDVSS
ESDVSS
GND
GND
Audio Analog Circuit Ground for Electrostatic Discharge.
-
Connect this pin to ground.
AUDVREF
HSVDD
PWR
PWR
Audio Voltage Reference pin for decoupling.
Headset Driver Power Supply.
-
-
Headset Driver Ground.
HSVSS
GND
PWR
-
-
Connect this pin to ground.
AUDVBAT
Audio Amplifier Supply.
Table 15. Stereo Audio Dac and Mono Power Amplifier Signal Description
Signal
Alternate
Function
Name
LPHN
HPN
Type
Description
O
O
O
O
I
Low Power Audio Stage Output
Negative Speaker Output
-
-
-
-
-
-
-
-
-
-
-
-
HPP
Positivie Speaker Output
CBP
Audio Amplifier Common Mode Voltage Decoupling
Audio Amplifier Negative Input
Audio Amplifier Positive Input
Audio Reset (Active Low)
PAINN
PAINP
AUDRST
MONON
MONOP
AUXP
AUXN
HSL
I
I
O
O
I
Audio Negative Monaural Driver Output
Audio Positive Monaural Driver Output
Audio Mono Auxiliary Positive Input
Audio Mono Auxiliary Negative Input
Audio Left Channel Headset Driver Output
I
O
9
4341D–MP3–04/05
ATMEL [ ATMEL ]
