WM8311 datasheet(253/302 Pages) WOLFSON

253 / 302 page

Pre-Production

WM8311

PP, May 2012, Rev 3.1

253

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16488

(4068h)

LDO1

Control

15:14

LDO1_ERR_A

CT [1:0]

LDO1 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

LDO1_HWC_S

RC [1:0]

LDO1 Hardware Control Source

00 = Disabled

01 = Hardware Control 1

10 = Hardware Control 2

11 = Hardware Control 1 or 2

LDO1_HWC_V

SEL

LDO1 Hardware Control Voltage select

0 = Set by LDO1_ON_VSEL

1 = Set by LDO1_SLP_VSEL

9:8

LDO1_HWC_M

ODE [1:0]

LDO1 Hardware Control Operating Mode

00 = Low Power mode

01 = Turn converter off

10 = Low Power mode

11 = Set by LDO1_ON_MODE

LDO1_FLT

LDO1 Output float

0 = LDO1 output discharged when disabled

1 = LDO1 output floating when disabled

LDO1_SWI

LDO1 Switch Mode

0 = LDO mode

1 = Switch mode

LDO1_LP_MO

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.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16489

(4069h)

LDO1 ON

Control

15:13

LDO1_ON_SL

OT [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 1

111 = Controlled by Hardware Enable 2

LDO1_ON_MO

LDO1 ON Operating Mode

0 = Normal mode

1 = Low Power mode

WM8311 Datasheet(PDF) 253 Page - Wolfson Microelectronics plc

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