WM8741GEDSSLASHV datasheet(47/64 Pages) WOLFSON

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Production Data

WM8741

PD, Rev 4.2, October 2009

ADDRESS

BITS

NAME

DEFAULT

DESCRIPTION

Filter Control

06h

[2:0]

FIRSEL

000

Select advanced digital filter response:

000 = Response 1

001 = Response 2

010 = Response 3

011 = Response 4

100 = Response 5

[4:3]

DSDFILT

Select DSD compensation filter response:

00 = Response 1

01 = Response 2

10 = Response 3

11 = Response 4

[6:5]

DEEMPH

[1:0]

De-emphasis mode select:

00 = De-emphasis Off

01 = De-emphasis 32kHz

10 = De-emphasis 44.1kHz

11 = De-emphasis 48kHz

ZFLAG_HI

ZFLAG Force High Control

0 = Normal operation

1 = Output Logic 1

Table 59 R6 Filter Control Register

ADDRESS

BITS

NAME

DEFAULT

DESCRIPTION

Mode Control 1

07h

[1:0]

MODESEL

[1:0]

DSD/PCM mode select.

00 = PCM mode

01 = DSD Direct mode

10 = DSD Plus mode

11 = Unused

[4:2]

SR[3:0]

000

MCLK to LRCLK sampling rate ratio control:

000 = auto detect sample rate

001 = 128fs

010 = 192fs

011 = 256fs

100 = 384fs

101 = 512fs

110 = 768fs

[6:5]

OSR[1:0]

Selects low, medium or high sample rate mode for filter selection

(equivalent to OSR pin functionality in Hardware Mode)

00 = Low rate (32/44.1/48kHz)

01 = Medium rate (96kHz)

10 = High rate (192kHz)

11 = Unused

MODE8X

8FS mode select:

0 = Normal operation

1 = 8FS mode (digital filters bypassed)

Table 60 R7 Mode Control Register 1

WM8741GEDS/V Datasheet(PDF) 47 Page - Wolfson Microelectronics plc

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