WM8310 datasheet(225/291 Pages) WOLFSON

225 / 291 page

Pre-Production

WM8310

PP, May 2012, Rev 3.1

225

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16475

(405Bh)

DC2 Control

15:14

DC2_RATE

[1:0]

DC-DC2 Voltage Ramp rate

00 = 1 step every 32us

01 = 1 step every 16us

10 = 1 step every 8us

11 = Immediate voltage change

DC2_PHASE

DC-DC2 Clock Phase Control

0 = Normal

1 = Inverted

9:8

DC2_FREQ

[1:0]

DC-DC2 Switching Frequency

00 = Reserved

01 = 2.0MHz

10 = Reserved

11 = 4.0MHz

DC2_FLT

DC-DC2 Output float

0 = DC-DC2 output discharged when disabled

1 = DC-DC2 output floating when disabled

5:4

DC2_SOFT_ST

ART [1:0]

DC-DC2 Soft-Start Control

(Duration in each of the 8 startup current limiting steps.)

00 = 32us steps

01 = 64us steps

10 = 128us steps

11 = 256us steps

1:0

DC2_CAP [1:0]

DC-DC2 Output Capacitor

00 = 4.7uF to 20uF

01 = Reserved

10 = 22uF to 47uF

11 = Reserved

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16476

(405Ch)

DC2 Control

15:14

DC2_ERR_AC

T [1:0]

DC-DC2 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

DC2_HWC_SR

C [1:0]

DC-DC2 Hardware Control Source

00 = Disabled

01 = Hardware Control 1

10 = Hardware Control 2

11 = Hardware Control 1 or 2

DC2_HWC_VS

DC-DC2 Hardware Control Voltage select

0 = Set by DC2_ON_VSEL

1 = Set by DC2_SLP_VSEL

9:8

DC2_HWC_M

ODE [1:0]

DC-DC2 Hardware Control Operating Mode

00 = Forced Continuous Conduction Mode

01 = Disabled

10 = LDO Mode

11 = Hysteretic Mode

WM8310 Datasheet(PDF) 225 Page - Wolfson Microelectronics plc

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