WM8321
Production Data
PIN
NAME
TYPE
POWER
DOMAIN
DESCRIPTION
Processor Interface and IC Control
ON Request Pin
(Internal pull-up)
W9
¯O¯N¯
Digital Input
Digital I/O
VPMIC
System Reset Input and Open Drain Output.
(Internal pull-up)
B10
R¯¯E¯S¯E¯T¯
DBVDD
PMIC Interrupt Flag Output.
Configurable Open Drain / CMOS mode.
(Internal pull-up in Open Drain mode.)
Primary Control Interface Mode Select:
0 = I2C Compatible Control Interface Mode
1 = SPI Compatible Control Interface Mode
A11
E1
I¯R¯Q¯
Digital Output
Digital Input
DBVDD
DBVDD
CIFMODE
SPI Compatible Control
Interface Mode
I2C Compatible Control
Interface Mode
Control Interface Serial
Data Out.
No Function
D2
B9
SDOUT1
SCLK1
Digital Output
Digital Input
Open Drain output;
external 4.7kΩ pull-up
recommended.
Control Interface Serial
Clock
Control Interface Serial
Clock
Control Interface Serial
Data Input and Open
Drain Output.
DBVDD
Control Interface Serial
Data In
External 4.7kΩ pull-up
recommended.
A9
SDA1
Digital I/O
(Output can extend above
DBVDD domain.)
I2C Address Select:
Control Interface Chip
Select
0 = 68h
A10
Y10
W10
C¯¯S
Digital Input
Digital I/O
Digital I/O
1 = 6Ch
Control Interface Serial Clock for external
InstantConfigTM EEPROM (ICE)
SCLK2
SDA2
(Internal pull-down)
VPMIC
Control Interface Serial Data to/from external
InstantConfigTM EEPROM (ICE)
(Internal pull-down)
Digital Buffer Supply
Digital Buffer Supply
B11
DBVDD1
DBVDD2
Supply
Supply
F1
OTP Memory
Y3
High-voltage input for OTP programming.
PROGVDD
Supply
PD, February 2012, Rev 4.0
10
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
