WM8903 datasheet(156/178 Pages) WOLFSON

156 / 178 page

WM8903

Production Data

PD, Rev 4.5, June 2012

156

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R63 (3Fh)

Analogue

OUT3 Right

SPKR_MUTE

Right Speaker Output Mute

0 = Un-mute

1 = Mute

SPKVU

Speaker Output Volume Update

Writing a 1 to this bit will update LON/LOP and

RON/ROP volumes simultaneously.

(Write-Only Register)

SPKRZC

Right Speaker Output Zero Cross Enable

0 = disabled

1 = enabled

5:0

SPKR_VOL

[5:0]

11_1001

Right Speaker Output Volume

000000 = -57dB

000001 = -56dB

(… 1dB steps)

111001 = 0dB

(… 1dB steps)

111110 = +5dB

111111 = +6dB

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R65 (41h)

Analogue

SPK Output

Control 0

SPK_DISCHARGE

Speaker Discharge Enable

0 = Disabled

1 = Enable

VROI

Select VMID_TIE_ENA resistance for disabled

Differential Lineouts

0 = 20k ohm

1 = 500 ohm

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R67 (43h)

DC Servo 0

DCS_MASTER_ENA

DC Servo Master Control

0 = DC Servo Reset

1 = DC Servo Enabled

3:0

DCS_ENA [3:0]

0000

DC Servo Enable

[3] - HPOUTL enable

[2] - HPOUTR enable

[1] - LINEOUTL enable

[0] - LINEOUTR enable

WM8903 Datasheet(PDF) 156 Page - Wolfson Microelectronics plc

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