WM8976 datasheet(87/108 Pages) WOLFSON

87 / 108 page

Pre-Production

WM8976

PP Rev 3.0 April 2006

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

8:4

00000

Reserved

3:1

000

Approximate sample rate (configures the

coefficients for the internal digital filters):

000=48kHz

001=32kHz

010=24kHz

011=16kHz

100=12kHz

101=8kHz

110-111=reserved

Audio Sample

Rates

7 (07h)

SLOWCLKEN

Slow clock enable. Used for both the jack insert

detect debounce circuit and the zero cross

timeout.

0 = slow clock disabled

1 = slow clock enabled

Analogue

Outputs

8:6

000

Reserved

5:4

OPCLKDIV

PLL Output clock division ratio

00=divide by 1

01=divide by 2

10=divide by 3

11=divide by 4

General

Purpose

Input/Output

(GPIO)

GPIO1POL

GPIO1 Polarity invert

0=Non inverted

1=Inverted

General

Purpose

Input/Output

(GPIO)

8 (08h)

2:0

GPIO1SEL

[2:0]

000

CSB/GPIO1 pin function select:

000= input (CSB/jack detection: depending on

MODE setting)

001= reserved

010=Temp ok

011=Amute active

100=PLL clk o/p

101=PLL lock

110=logic 1

111=logic 0

General

Purpose

Input/Output

(GPIO)

8:7

JD_VMID

[7] VMID_EN_0

[8] VMID_EN_1

Output

Switching

(Jack Detect)

JD_EN

Jack Detection Enable

0=disabled

1=enabled

Output

Switching

(Jack Detect)

Reserved

JD_SEL

Pin selected as jack detection input

0 = GPIO1

1 = GPIO2

Output

Switching

(Jack Detect)

9 (09h)

3:0

Reserved

8:7

Reserved

SOFTMUTE

Softmute enable:

0=Disabled

1=Enabled

Output Signal

Path

10 (0Ah)

5:4

Reserved

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