WM8321 Datasheet, PDF (239/253 Pages) Wolfson Microelectronics plc – Processor Power Management Subsystem

Production Data
REGISTER BIT
ADDRESS
LABEL
DEFAULT
DESCRIPTION
13 = HW Control2 input
14 = HW Control1 input (long de-bounce)
15 = HW Control2 input (long de-bounce)
Register 781Ch GPIO3 OTP Control
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
WM8321
REFER TO
REGISTER
ADDRESS
R30749
(781Dh)
GPIO4 OTP
Control
BIT
LABEL
DEFAULT
DESCRIPTION
15 GP4_DIR
14:13 GP4_PULL
[1:0]
12 GP4_INT_MOD
E
11 GP4_PWR_DO
M
10 GP4_POL
9 GP4_OD
8 GP4_ENA
7:4 GP4_FN [3:0]
1
01
0
0
1
0
0
0000
GPIO4 pin direction
0 = Output
1 = Input
GPIO4 Pull-Up / Pull-Down configuration
00 = No pull resistor
01 = Pull-down enabled
10 = Pull-up enabled
11 = Reserved
GPIO4 Interrupt Mode
0 = GPIO interrupt is rising edge triggered (if
GP4_POL=1) or falling edge triggered (if GP4_POL=0)
1 = GPIO interrupt is triggered on rising and falling
edges
GPIO4 Power Domain select
0 = DBVDD
1 = PVDD
GPIO4 Polarity select
0 = Inverted (active low)
1 = Non-Inverted (active high)
GPIO4 Output pin configuration
0 = CMOS
1 = Open Drain
GPIO4 Enable control
0 = GPIO pin is tri-stated
1 = Normal operation
GPIO4 Pin Function
Input functions:
REFER TO
w
PD, February 2012, Rev 4.0
239