Production Data
WM8321
ADDRESS
R16450
(4042h)
BIT
LABEL
DEFAULT
DESCRIPTION
GP11_PWR_D
OM
GPIO11 Power Domain select
0 = DBVDD
11
0
GPIO11
Control
1 = PVDD
R16451
(4043h)
GP12_PWR_D
OM
GPIO12 Power Domain select
0 = DBVDD
11
0
GPIO12
Control
1 = PVDD
Table 56 GPIO Power Domain Registers
The function of each GPIO is controlled using the GPn_FN registers defined in Table 57. Note that
the selected function also depends on the associated GPn_DIR field described in Table 54.
See also Section 21.2 for additional details of each GPIO function, including the applicable de-bounce
times for GPIO input functions.
ADDRESS
R16440
BIT
LABEL
DEFAULT
DESCRIPTION
Input functions:
GP1_FN [3:0]
3:0
0000
(4038h)
0h = GPIO input (long de-bounce)
1h = GPIO input
GPIO1 Control
R16441
(4039h)
GP2_FN [3:0]
GP3_FN [3:0]
GP4_FN [3:0]
GP5_FN [3:0]
GP6_FN [3:0]
GP7_FN [3:0]
GP8_FN [3:0]
GP9_FN [3:0]
GP10_FN [3:0]
3:0
3:0
3:0
3:0
3:0
3:0
3:0
3:0
3:0
0000
0000
0000
0000
0000
0000
0000
0000
0000
2h = Power On/Off request
3h = Sleep/Wake request
GPIO2 Control
4h = Sleep/Wake request (long de-
bounce)
R16442
(403Ah)
5h = Sleep request
GPIO3 Control
6h = Power On request
7h = Watchdog Reset input
8h = DVS1 input
R16443
(403Bh)
GPIO4 Control
9h = DVS2 input
R16444
(403Ch)
Ah = HW Enable1 input
Bh = HW Enable2 input
Ch = HW Control1 input
Dh = HW Control2 input
GPIO5 Control
R16445
(403Dh)
Eh = HW Control1 input (long de-
bounce)
GPIO6 Control
R16446
(403Eh)
Fh = HW Control2 input (long de-
bounce)
GPIO7 Control
R16447
(403Fh)
Output functions:
0h = GPIO output
GPIO8 Control
1h = 32.768kHz oscillator output
2h = ON state
R16448
(4040h)
3h = SLEEP state
GPIO9 Control
4h = Power State Change
5h = Reserved
R16449
(4041h)
6h = Reserved
GPIO10
Control
7h = Reserved
8h = DC1 DVS Done
9h = DC2 DVS Done
Ah = External Power Enable1
Bh = External Power Enable2
Ch = System Supply Good (SYSOK)
R16450
(4042h)
GP11_FN [3:0]
GP12_FN [3:0]
3:0
3:0
0000
0000
GPIO11
Control
R16451
(4043h)
Dh = Converter Power Good
(PWR_GOOD)
GPIO12
Control
Eh = External Power Clock (2MHz)
Fh = Auxiliary Reset
Table 57 GPIO Function Select Registers
PD, February 2012, Rev 4.0
113
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
