WM8741GEDSSLASHV datasheet(48/64 Pages) WOLFSON

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WM8741

Production Data

PD, Rev 4.2, October 2009

ADDRESS

BITS

NAME

DEFAULT

DESCRIPTION

Mode Control 2

08h

[1:0]

DITHER[1:0]

ALU dither mode select:

00 = dither off

01 = RPDF dither applied in ALU

10 = TPDF dither applied in ALU

11 = HPDF dither applied in ALU

Note: DITHER[1:0] applies only to the dither mode in the ALU.

[3:2]

DIFF[1:0]

00 = Stereo

10 = Stereo reverse (left and right channels swapped)

01 = Mono left – differential outputs

VOUTLP is left channel.

VOUTLN is left channel inverted.

VOUTRP is left channel inverted.

VOUTRN is left channel.

11 = Mono right – differential outputs.

VOUTLP is right channel inverted.

VOUTLN is right channel.

VOUTRP is right channel.

VOUTRN is right channel inverted.

DOUT

Daisychaining Mode. Audio data output control:

0 = No audio data daisychaining

1 = Audio data output on pin 23

SDOUT

Daisychaining Mode. Control data output control:

0 = No control data daisychaining

1 = Control data output on pin 25

DSD_GAIN

DSD Plus gain control:

0 = Low gain, 1.4Vrms differential output level

1 = High gain, 2.0Vrms differential output level

Table 61 R8 Mode Control Register 2

ADDRESS

BITS

NAME

DEFAULT

DESCRIPTION

Software reset

09h

[7:0]

RESET

00000000

Software reset. Writing to the register resets the entire chip, including

the register map.

Table 62 R9 Software Reset Control Register

ADDRESS

BITS

NAME

DEFAULT

DESCRIPTION

R32

Additional

Control 1

20h

DSD_NO_

NOTCH

DSD Direct 8fs Notch Filter

0: Enable 8fs notch filter

1: Disable 8fs notch filter

DSD_LEVEL

DSD Direct Filter Gain

0: High Gain

1: Low Gain

Table 63 R32 Additional Control 1

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