AT85C51SND3Bx
Signal
Name
Alternate
Function
Type Description
USB OTG Identifier Input
This pin monitors the function of the OTG device.
Note: This input is requested for OTG mode.
UID
I
P3.7
USB Supply Voltage
UVCC
PWR
PWR
PWR
-
-
Connect this pin to USB VBUS power line.
USB Pad Low Voltage
ULVDD
Connect this pin to LVDD pin.
USB Pad High Voltage
UHVDD
UVSS
-
-
Connect this pin to HVDD pin.
GND USB Ground
USB Bias
UBIAS
O
Connect this pin to external resistor and capacitor.
Audio Processor
Table 8. I2S Output Description
Signal
Alternate
Function
Name
OCLK
DCLK
DDAT
DSEL
Type Description
O
O
O
O
Over-sampling Clock Line
P4.0
P4.1
P4.2
P4.3
Data Clock Line
Data Lines
Data Channel Selection Line
Table 9. Audio Codec Description
Signal
Name
Alternate
Function
Type Description
LINR
I
I
Right Channel Analog Input
-
-
-
-
LINL
Left Channel Analog Input
MICIN
MICBIAS
I
Electret Microphone Analog Input
Electret Microphone Bias Output
O
Right Channel Output
OUTR
OUTL
AVCM
O
O
I
-
-
-
Do not connect on AT85C51SND3B1 product
Left Channel Output
Do not connect on AT85C51SND3B1 product
Analog Common Mode Voltage
Connect this pin to external decoupling capacitor.
Analog Reference Voltage
AREF
AVDD1
AVSS1
O
-
-
-
Connect this pin to external decoupling capacitor.
Analog Power Supply 1
PWR
GND
Connect this pin to LVDD pin.
Analog Ground 1
Connect this pin to LVSS pin.
11
7632A–MP3–03/06
ATMEL [ ATMEL ]
