WM8352
Production Data
3
PIN DESCRIPTION
Notes:
Pins are listed in alphabetical order by name.
NAME
ADCDATA
AUX1
LOCATION(S)
TYPE
POWER
DOMAIN
DESCRIPTION
M7
Digital Output
Analogue Input
DBVDD
Digital audio output (typically from on-chip audio ADC to
external IC)
H11
LINE
Auxiliary ADC input AUX1
(Special function for connection to temperature-sensing
NTC resistor in battery pack)
AUX2
AUX3
AUX4
AVDD
BATT
J13
H13
Analogue Input
Analogue Input
Analogue Input
Supply
LINE
LINE
LINE
Auxiliary ADC input AUX2
Auxiliary ADC input AUX3
Auxiliary ADC input AUX4
Analogue supply for audio CODEC
C9
M8
E1, E2, D2
Analogue I/O
Main battery power connection (can draw power or
charge battery)
BCLK
CREF
L8
Digital I/O
DBVDD
Bit clock signal for digital audio interface
H3
Analogue Output VRTC
Decoupling for VREF reference voltage (connect
capacitor here)
CONF0
CONF1
J1
K1
N7
Digital Input
Digital Input
Digital Input
VRTC
VRTC
DBVDD
Start-up configuration pin 0
Start-up configuration pin 1
DACDATA
Digital audio input (typically from external IC to on-chip
audio DAC)
DCVDD
DBVDD
N5
N6
Supply
Supply
Digital core supply; powers digital core of audio CODEC
Digital I/O buffer supply; powers digital audio interface,
control interface and pins GPIO4 to GPIO9
DGND
M5
Supply
Digital ground; return path for DCVDD and DBVDD
supplies
FB1
FB2
FB3
FB4
FB5
FB6
GND
C6
A12
D11
C3
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Supply
PV1
VP2
PV3
PV4
VP5
PV6
DC-DC1 feedback pin
DC-DC2 feedback pin
DC-DC3 feedback pin
DC-DC4 feedback pin
C4
DC-DC5 feedback pin
A10
DC-DC6 feedback pin
F6, F7, F8,
G6,G7, G8,
H6, H7, H8,
C7, C8
Quiet ground connection for audio CODEC.
Note that DC-DC Converters use a separate ground
connection.
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
GPIO10
GPIO11
GPIO12
HIVDD
L1
M2
M1
N1
N3
L5
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Analogue Output
VRTC
VRTC
VRTC
VRTC
DBVDD
DBVDD
DBVDD
DBVDD
DBVDD
DBVDD
LINE
General Purpose Input/Output pin 0
General Purpose Input/Output pin 1
General Purpose Input/Output pin 2
General Purpose Input/Output pin 3
General Purpose Input/Output pin 4
General Purpose Input/Output pin 5
General Purpose Input/Output pin 6
General Purpose Input/Output pin 7
General Purpose Input/Output pin 8
General Purpose Input/Output pin 9
General Purpose Input/Output pin 10
General Purpose Input/Output pin 11
General Purpose Input/ Output pin 12
M4
N4
L6
L7
B11
C10
A11
D3
LINE
LINE
Analogue output from power management unit which
determines highest supply from Line, Battery or USB.
HPCOM
HPGND
J12
L13
Analogue Input
Supply
HPVDD
HPVDD
Headphone output amplifier noise compensation input
Headphone ground; return path for HPVDD supply
PD, February 2011, Rev 4.4
10
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
