Pre-Production
WM8310
3
PIN DESCRIPTION
Notes:
1. Pins are sorted by functional groups.
2. The power domain associated with each pin is noted; VPMIC is the domain powered by LDO12 for the ‘always-on’
functions internal to the WM8310.
3. Note that an external level-shifter may be required when interfacing between different power domains.
PIN
NAME
TYPE
POWER
DOMAIN
DESCRIPTION
Auxiliary ADC
USBVDD Supply Voltage Monitor
SYSVDD Supply Voltage Monitor
BATTVDD Supply Voltage Monitor
J7
N5
K8
USBVMON
SYSVMON
BATTVMON
Analogue Input
Analogue Input
Analogue Input
USBVDD
SYSVDD
BATTVDD
Auxiliary Analogue Input 1 /
Battery Charge Current Monitor Output
Analogue
Input/Output
J9
AUXADCIN1
SYSVDD
DBVDD
Auxiliary Analogue Input 2
Auxiliary Analogue Input 3
Auxiliary Analogue Input 4
M13
N13
G5
AUXADCIN2
AUXADCIN3
AUXADCIN4
Analogue Input
Analogue Input
Analogue Input
Clocking and Real Time Clock
Crystal Drive Output
M10
L10
N12
XTO
XTI
Analogue Output
Analogue Input
Supply
VPMIC
Crystal Drive Input or 32.768kHz CMOS Clock Input
Crystal Oscillator Ground
XOSCGND
CMOS Clock Output
L4
CLKOUT
Digital Output
Digital Input
Configurable Open Drain / CMOS mode. (External
4.7kΩ pull-up recommended in Open Drain mode.)
DBVDD
CMOS FLL Clock Input
N4
CLKIN
General Purpose Input / Output
GPIO Pin 1
E5
D13
E6
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
GPIO10
GPIO11
GPIO12
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
Selectable pull-up/pull-down.
GPIO Pin 2
DBVDD or
VPMIC
Selectable pull-up/pull-down.
GPIO Pin 3
Selectable pull-up/pull-down.
GPIO Pin 4
F9
Selectable pull-up/pull-down.
GPIO Pin 5
DBVDD or
SYSVDD
F7
Selectable pull-up/pull-down.
GPIO Pin 6
F8
Selectable pull-up/pull-down.
GPIO Pin 7
E7
Selectable pull-up/pull-down.
GPIO Pin 8
DBVDD or
VPMIC
E8
Selectable pull-up/pull-down.
GPIO Pin 9
E13
H12
G11
G10
Selectable pull-up/pull-down.
GPIO Pin 10
Selectable pull-up/pull-down.
GPIO Pin 11
DBVDD or
SYSVDD
Selectable pull-up/pull-down.
GPIO Pin 12
Selectable pull-up/pull-down.
PP, May 2012, Rev 3.1
9
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
