Production Data
WM8321
PIN
NAME
TYPE
POWER
DOMAIN
DESCRIPTION
DC-DC Converters and LDO Regulators
DC-DC1 Power Ground
B7
A8
A7
B8
B6
A5
A6
B5
M1
J1
DC1GND
DC1FB
Supply
Analogue Input
Analogue I/O
Supply
DC-DC1 Feedback Pin
DC1VDD
DC2VDD
DC3VDD
DC4VDD
DC-DC1 Inductor Connection
DC1LX
DC-DC1 Power Input (connect to PVDD system supply)
DC-DC2 Power Ground
DC1VDD
DC2GND
DC2FB
Supply
DC-DC2 Feedback Pin
Analogue Input
Analogue I/O
Supply
DC-DC2 Inductor Connection
DC-DC2 Power Input (connect to PVDD system supply)
DC-DC3 Power Ground
DC2LX
DC2VDD
DC3GND
DC3FB
Supply
DC-DC3 Feedback Pin
Analogue Input
Analogue I/O
Supply
DC-DC3 Inductor Connection
DC-DC3 Power Input (connect to PVDD system supply)
DC-DC4 Power Ground
L1
DC3LX
K1
N1
T1
P1
R1
A3
B2
B3
B4
A4
W3
Y2
Y1
W2
W1
V1
R3
N2
R2
M2
M3
N3
V3
DC3VDD
DC4GND
DC4FB
Supply
DC-DC4 Feedback Pin
Analogue Input
Analogue I/O
Supply
DC-DC4 Inductor Connection
DC-DC4 Power Input (connect to PVDD system supply)
LDO1 & LDO2 Power Input
LDO1 Power Output
DC4LX
DC4VDD
LDO1_2VDD
LDO1VOUT
LDO2VOUT
LDO3VDD
LDO3VOUT
LDO4VDD
LDO4VOUT
LDO5VDD
LDO5VOUT
LDO6VDD
LDO6VOUT
LDO7_8VDD
LDO7VOUT
LDO8VOUT
LDO9_10VDD
LDO9VOUT
LDO10VOUT
LDO11VOUT
Supply
Analogue Output
Analogue Output
Supply
LDO1VDD
LDO2VDD
LDO2 Power Output
LDO3 Power Input
LDO3 Power Output
Analogue Output
Supply
LDO3VDD
LDO4VDD
LDO5VDD
LDO6VDD
LDO4 Power Input
LDO4 Power Output
Analogue Output
Supply
LDO5 Power Input
LDO5 Power Output
Analogue Output
Supply
LDO6 Power Input
LDO6 Power Output
Analogue Output
Supply
LDO7 & LDO8 Power Input
LDO7 Power Output
Analogue Output
Analogue Output
Supply
LDO7VDD
LDO8VDD
LDO8 Power Output
LDO9 Power Input
LDO9 Power Output
Analogue Output
Analogue Output
Analogue Output
LDO9VDD
LDO10VDD
PVDD
LDO10 Power Output
LDO11 (Alive) Power Output
LDO12 (Internal VPMIC) Output;
Backup battery supply input / output
LDO13 (Internal INTVDD) Output; not for general use
LDO13 - Connect to LDO13VOUT1 (W7)
Y8
LDO12VOUT
Analogue I/O
PVDD
W7
K2
LDO13VOUT1
LDO13VOUT2
Analogue I/O
Analogue I/O
PVDD
PVDD
Voltage and Current References
Voltage Reference capacitor connection point
Current Reference resistor connection point
W8
Y9
VREFC
IREFR
Analogue I/O
Analogue I/O
VPMIC
PVDD
System LED Drivers
U3
U2
LED1
LED2
Digital Output
Digital Output
Status LED Driver 1. Open Drain Output
Status LED Driver 2. Open Drain Output
PD, February 2012, Rev 4.0
11
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
