WM8326 Datasheet, PDF (114/255 Pages) Wolfson Microelectronics plc – Processor Power Management Subsystem

WM8326
Production Data
ADDRESS
BIT
Control
LABEL
R16450
(4042h)
11 GP11_PWR_D
OM
GPIO11
Control
R16451
(4043h)
11 GP12_PWR_D
OM
GPIO12
Control
Table 56 GPIO Power Domain Registers
DEFAULT
DESCRIPTION
0
GPIO11 Power Domain select
0 = DBVDD
1 = PVDD
0
GPIO12 Power Domain select
0 = DBVDD
1 = PVDD
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
BIT
LABEL
R16440
(4038h)
3:0 GP1_FN [3:0]
GPIO1 Control
R16441
(4039h)
GPIO2 Control
3:0 GP2_FN [3:0]
R16442
(403Ah)
3:0 GP3_FN [3:0]
GPIO3 Control
R16443
(403Bh)
3:0 GP4_FN [3:0]
GPIO4 Control
R16444
(403Ch)
3:0 GP5_FN [3:0]
GPIO5 Control
R16445
(403Dh)
GPIO6 Control
3:0 GP6_FN [3:0]
R16446
(403Eh)
GPIO7 Control
3:0 GP7_FN [3:0]
R16447
(403Fh)
3:0 GP8_FN [3:0]
GPIO8 Control
R16448
(4040h)
3:0 GP9_FN [3:0]
GPIO9 Control
R16449
(4041h)
3:0 GP10_FN [3:0]
GPIO10
Control
R16450
(4042h)
GPIO11
Control
3:0 GP11_FN [3:0]
R16451
(4043h)
GPIO12
Control
3:0 GP12_FN [3:0]
Table 57 GPIO Function Select Registers
DEFAULT
0000
0000
0000
0000
0000
0000
0000
DESCRIPTION
Input functions:
0h = GPIO input (long de-bounce)
1h = GPIO input
2h = Power On/Off request
3h = Sleep/Wake request
4h = Sleep/Wake request (long de-
bounce)
5h = Sleep request
6h = Power On request
7h = Watchdog Reset input
8h = DVS1 input
9h = DVS2 input
Ah = HW Enable1 input
Bh = HW Enable2 input
Ch = HW Control1 input
Dh = HW Control2 input
Eh = HW Control1 input (long de-
bounce)
Fh = HW Control2 input (long de-
bounce)
0000
0000
0000
0000
0000
Output functions:
0h = GPIO output
1h = 32.768kHz oscillator output
2h = ON state
3h = SLEEP state
4h = Power State Change
5h = Reserved
6h = Reserved
7h = Reserved
8h = DC1 DVS Done
9h = DC2 DVS Done
Ah = External Power Enable1
Bh = External Power Enable2
Ch = System Supply Good (SYSOK)
Dh = Converter Power Good
(PWR_GOOD)
Eh = External Power Clock (2MHz)
Fh = Auxiliary Reset
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PD, June 2012, Rev 4.0
114