WM8311 datasheet(273/302 Pages) WOLFSON

273 / 302 page

Pre-Production

WM8311

PP, May 2012, Rev 3.1

273

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

9:8

DC1_FREQ

[1:0]

DC-DC1 Switching Frequency

00 = Reserved

01 = 2.0MHz

10 = Reserved

11 = 4.0MHz

DC1_PHASE

DC-DC1 Clock Phase Control

0 = Normal

1 = Inverted

6:2

DC1_ON_VSE

L [6:2]

0_0000

DC-DC1 ON Voltage select

DC1_ON_VSEL [6:0] selects the DC-DC1 output

voltage from 0.6V to 1.8V in 12.5mV steps.

DC1_ON_VSEL [6:2] controls the voltage in 50mV

steps.

DC1_ON_VSEL [6:0] is coded as follows:

00h to 08h = 0.6V

09h = 0.6125V

…

48h = 1.4V (see note)

…

67h = 1.7875V

68h to 7Fh = 1.8V

Note - Maximum output voltage selection in 4MHz

switching mode is 48h (1.4V).

1:0

DC1_CAP [1:0]

DC-DC1 Output Capacitor

00 = 4.7uF to 20uF

01 = Reserved

10 = 22uF to 47uF

11 = Reserved

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R30738

(7812h) DC2

OTP Control

15:13

DC2_ON_SLO

T [2:0]

000

DC-DC2 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

DC2_FREQ

[1:0]

DC-DC2 Switching Frequency

00 = Reserved

01 = 2.0MHz

10 = Reserved

11 = 4.0MHz

DC2_PHASE

DC-DC2 Clock Phase Control

0 = Normal

1 = Inverted

WM8311 Datasheet(PDF) 273 Page - Wolfson Microelectronics plc

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