wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 12

• Manufacturer Part Number: wm8351
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

WM8351
w
WALLFB
VOUT1
VOUT2
VOUT3
VOUT4
VRTC
NAME
VMID
VINA
VINB
DNC
USB
VP2
X1
X2
A9, A10, B1, B2,
A1, A2, A7, A8,
B7, B8, B9, C4,
LOCATION(S)
G1, G2, G3
G13
G11
G12
F13
H12
F11
B13
E12
N9
H1
E3
K3
J2
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Input
Analogue Input
Analogue I/O
Supply
Supply
Supply
Supply
Supply
TYPE
AVDD
VINA
VINA
VINB
VINB
LINE
VRTC
VRTC
DOMAIN
POWER
Connection to USB power rail
Input to voltage regulators LDO1 and LDO2
Input to voltage regulators LDO3 and LDO4
Reference voltage (normally AVDD/2) for audio CODEC
(connect capacitor here)
Output of voltage regulator LDO1
Output of voltage regulator LDO2
Output of voltage regulator LDO3
Output of voltage regulator LDO4
DC-DC2 power input
Backup power connection (WM8351 can draw power
from this pin or re-charge the backup power source)
Connection to Wall feedback
Connection for 32.768kHz crystal (input to oscillator from
crystal) or 32.768kHz external clock input (when not
using crystal)
Connection for 32.768kHz crystal (output from oscillator
to crystal)
Do Not Connect
DESCRIPTION
PD, June 2009, Rev 4.1
Production Data
12