WM8352
Production Data
NAME
LOCATION(S)
TYPE
POWER
DOMAIN
DESCRIPTION
REFGND
RREF
N8
J3
L2
Supply
Analogue Output
Digital Output
open-drain
Reference ground for audio ADC and DAC
Connection for external 100kΩ current reference resistor
System Reset Signal (active low)
/RST
DBVDD
SCLK
N2
Digital Input
DBVDD
DBVDD
Clock signal for 2-wire serial control interface (5V
Tolerant)
SDATA
SINKGND
SWVRTC
M3
E13
L3
Digital I/O
Supply
Data line for 2-wire serial control interface (5V Tolerant)
Ground connection for ISINKA and ISINKB
Analogue Output VRTC
Switchable VRTC output. Typically used for battery
temperature monitoring
USB
VINA
VINB
VMID
G1, G2, G3
G13
Supply
Supply
Supply
Connection to USB power rail
Input to voltage regulators LDO1 and LDO2
Input to voltage regulators LDO3 and LDO4
F13
N9
Analogue I/O
AVDD
Reference voltage (normally AVDD/2) for audio CODEC
(connect capacitor here)
VOUT1
VOUT2
VOUT3
VOUT4
VP2
H12
G11
G12
F11
B13
A1
Analogue Output VINA
Analogue Output VINA
Analogue Output VINB
Analogue Output VINB
Supply
Output of voltage regulator LDO1
Output of voltage regulator LDO2
Output of voltage regulator LDO3
Output of voltage regulator LDO4
DC-DC2 power input
VP5
Supply
DC-DC5 power input
VRTC
H1
Supply
Backup power connection (WM8352 can draw power
from this pin or re-charge the backup power source)
WALLFB
X1
E3
J2
Analogue Input
Analogue Input
LINE
Connection to Wall feedback
VRTC
Connection for 32.768kHz crystal (input to oscillator from
crystal) or 32.768kHz external clock input (when not
using crystal)
X2
K3
Analogue Output VRTC
Connection for 32.768kHz crystal (output from oscillator
to crystal)
PD, February 2011, Rev 4.4
12
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
