WM8311 datasheet(257/302 Pages) WOLFSON

257 / 302 page

Pre-Production

WM8311

PP, May 2012, Rev 3.1

257

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16494

(406Eh)

LDO3

Control

15:14

LDO3_ERR_A

CT [1:0]

LDO3 Error Action (Undervoltage)

00 = Ignore

01 = Shut down regulator

10 = Shut down system (Device Reset)

11 = Reserved

Note that an Interrupt is always raised.

12:11

LDO3_HWC_S

RC [1:0]

LDO3 Hardware Control Source

00 = Disabled

01 = Hardware Control 1

10 = Hardware Control 2

11 = Hardware Control 1 or 2

LDO3_HWC_V

SEL

LDO3 Hardware Control Voltage select

0 = Set by LDO3_ON_VSEL

1 = Set by LDO3_SLP_VSEL

9:8

LDO3_HWC_M

ODE [1:0]

LDO3 Hardware Control Operating Mode

00 = Low Power mode

01 = Turn converter off

10 = Low Power mode

11 = Set by LDO3_ON_MODE

LDO3_FLT

LDO3 Output float

0 = LDO3 output discharged when disabled

1 = LDO3 output floating when disabled

LDO3_SWI

LDO3 Switch Mode

0 = LDO mode

1 = Switch mode

LDO3_LP_MO

LDO3 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.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16495

(406Fh)

LDO3 ON

Control

15:13

LDO3_ON_SL

OT [2:0]

000

LDO3 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

LDO3_ON_MO

LDO3 ON Operating Mode

0 = Normal mode

1 = Low Power mode

WM8311 Datasheet(PDF) 257 Page - Wolfson Microelectronics plc

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