WM8321 Datasheet, PDF (77/253 Pages) Wolfson Microelectronics plc – Processor Power Management Subsystem

Production Data
ADDRESS
R16489 (4069h)
LDO1 ON
Control
R16490 (406Ah)
LDO1 SLEEP
Control
BIT
LABEL
0
LDO1_LP_M
ODE
15:13 LDO1_ON_S
LOT [2:0]
8
LDO1_ON_
MODE
4:0 LDO1_ON_V
SEL [4:0]
15:13 LDO1_SLP_
SLOT [2:0]
8
LDO1_SLP_
MODE
DEFAULT
0
000
0
00000
000
0
WM8321
DESCRIPTION
LDO1 Low Power Mode Select
0 = 50mA (reduced quiescent current)
1 = 20mA (minimum quiescent
current)
Selects which Low Power mode is
used in ON, SLEEP, or under HWC
modes.
LDO1 ON Slot select
000 = Do not enable
001 = Enable in Timeslot 1
010 = Enable in Timeslot 2
011 = Enable in Timeslot 3
100 = Enable in Timeslot 4
101 = Enable in Timeslot 5
110 = Controlled by Hardware Enable
1
111 = Controlled by Hardware Enable
2
LDO1 ON Operating Mode
0 = Normal mode
1 = Low Power mode
LDO1 ON Voltage select
0.9V to 1.6V in 50mV steps
1.7V to 3.3V in 100mV steps
00h = 0.90V
01h = 0.95V
…
0Eh = 1.60V
0Fh = 1.70V
…
1Eh = 3.20V
1Fh = 3.30V
LDO1 SLEEP Slot select
000 = SLEEP voltage / operating
mode transition in Timeslot 5
001 = Disable in Timeslot 5
010 = Disable in Timeslot 4
011 = Disable in Timeslot 3
100 = Disable in Timeslot 2
101 = Disable in Timeslot 1
110 = SLEEP voltage / operating
mode transition in Timeslot 3
111 = SLEEP voltage / operating
mode transition in Timeslot 1
If LDO1 is assigned to a Hardware
Enable Input, then codes 001-101
select in which timeslot the regulator
enters its SLEEP condition.
LDO1 SLEEP Operating Mode
0 = Normal mode
1 = Low Power mode
w
PD, February 2012, Rev 4.0
77