WM8321 datasheet(196/253 Pages) WOLFSON

196 / 253 page

WM8321

Production Data

PD, February 2012, Rev 4.0

196

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16481

(4061h) DC3

Control 2

15:14

DC3_ERR_AC

T [1:0]

DC-DC3 Error Action (Undervoltage)

00 = Ignore

01 = Shut down converter

10 = Shut down system (Device Reset)

11 = Reserved

Note that an Interrupt is always raised.

12:11

DC3_HWC_SR

C [1:0]

DC-DC3 Hardware Control Source

00 = Disabled

01 = Hardware Control 1

10 = Hardware Control 2

11 = Hardware Control 1 or 2

DC3_HWC_VS

DC-DC3 Hardware Control Voltage select

0 = Set by DC3_ON_VSEL

1 = Set by DC3_SLP_VSEL

9:8

DC3_HWC_M

ODE [1:0]

DC-DC3 Hardware Control Operating Mode

00 = Forced Continuous Conduction Mode

01 = Disabled

10 = LDO Mode

11 = Hysteretic Mode

DC3_OVP

DC-DC3 Overvoltage Protection

0 = Disabled

1 = Enabled

DC3 Control 2

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16482

(4062h) DC3

ON Config

15:13

DC3_ON_SLO

T [2:0]

000

DC-DC3 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

9:8

DC3_ON_MOD

E [1:0]

DC-DC3 ON Operating Mode

00 = Forced Continuous Conduction Mode

01 = Auto Mode (Continuous / Discontinuous

Conduction with Pulse-Skipping)

10 = LDO Mode

11 = Hysteretic Mode

6:2

DC3_ON_VSE

L [6:2]

0_0000

DC-DC3 ON Voltage select

DC3_ON_VSEL [6:0] selects the DC-DC3 output

voltage from 0.85V to 3.4V in 25mV steps.

DC3_ON_VSEL [6:2] also exist in ICE/OTP memory,

controlling the voltage in 100mV steps.

DC3_ON_VSEL [6:0] is coded as follows:

00h = 0.85V

01h = 0.875V

…

65h = 3.375V

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