WM8321 datasheet(77/253 Pages) WOLFSON

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Production Data

WM8321

PD, February 2012, Rev 4.0

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

LDO1_LP_M

ODE

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.

R16489 (4069h)

LDO1 ON

Control

15:13

LDO1_ON_S

LOT [2:0]

000

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

111 = Controlled by Hardware Enable

LDO1_ON_

MODE

LDO1 ON Operating Mode

0 = Normal mode

1 = Low Power mode

4:0

LDO1_ON_V

SEL [4:0]

00000

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

R16490 (406Ah)

LDO1 SLEEP

Control

15:13

LDO1_SLP_

SLOT [2:0]

000

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_SLP_

MODE

LDO1 SLEEP Operating Mode

0 = Normal mode

1 = Low Power mode

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