WM8321
Production Data
REFER TO
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
13 = HW Control2 input
14 = HW Control1 input (long de-bounce)
15 = HW Control2 input (long de-bounce)
Output functions:
0 = GPIO output
1 = 32.768kHz oscillator output
2 = ON state
3 = SLEEP state
4 = Power State Change
5 = Reserved
6 = Reserved
7 = Reserved
8 = DC-DC1 DVS Done
9 = DC-DC2 DVS Done
10 = External Power Enable1
11 = External Power Enable2
12 = System Supply Good (SYSOK)
13 = Converter Power Good (PWR_GOOD)
14 = External Power Clock (2MHz)
15 = Auxiliary Reset
Register 403Fh GPIO8 Control
REGISTER
ADDRESS
BIT
LABEL
GP9_DIR
DEFAULT
DESCRIPTION
REFER TO
R16448
(4040h)
GPIO9
Control
GPIO9 pin direction
0 = Output
15
1
1 = Input
GP9_PULL
[1:0]
GPIO9 Pull-Up / Pull-Down configuration
00 = No pull resistor
01 = Pull-down enabled
10 = Pull-up enabled
11 = Reserved
14:13
01
GP9_INT_MOD
E
GPIO9 Interrupt Mode
12
0
0 = GPIO interrupt is rising edge triggered (if
GP9_POL=1) or falling edge triggered (if GP9_POL=0)
1 = GPIO interrupt is triggered on rising and falling
edges
GP9_PWR_DO
M
GPIO9 Power Domain select
0 = DBVDD
11
10
9
0
1
0
0
1 = PMICVDD (LDO12)
GPIO9 Polarity select
0 = Inverted (active low)
1 = Non-Inverted (active high)
GPIO9 Output pin configuration
0 = CMOS
GP9_POL
GP9_OD
GP9_ENA
1 = Open Drain
GPIO9 Enable control
0 = GPIO pin is tri-stated
1 = Normal operation
7
PD, February 2012, Rev 4.0
178
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
