WM8581 datasheet(77/94 Pages) WOLFSON

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WM8581

PP Rev 1.0 March 2006

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

1:0

PAIFRXFMT

[1:0]

PAIF Receiver Audio Data Format Select

11: DSP Format

10: I

2S Format

01: Left justified

00: Right justified

3:2

PAIFRXWL

[1:0]

PAIF Receiver Audio Data Word Length

11: 32 bits (see Note)

10: 24 bits

01: 20 bits

00: 16 bits

PAIFRXLRP

In LJ/RJ/I

2S modes

0 = LRCLK not inverted

1 = LRCLK inverted

In DSP Format:

0 = DSP Mode A

1 = DSP Mode B

PAIFRXBCP

PAIF Receiver BCLK polarity

0 = BCLK not inverted

1 = BCLK inverted

DACOSR

DAC Oversampling Rate Control

0= 128x oversampling

1= 64x oversampling

R12

PAIF 3

0Ch

8:7

DAC_SRC

[1:0]

DAC1 Source:

00 = S/PDIF received data.

10 = SAIF Receiver data

11 = PAIF Receiver data

Note: When DAC_SRC = 00, DAC2/3/4 may be turned off,

depending on RX2DAC_MODE

1:0

PAIFTXFMT

[1:0]

PAIF Transmitter Audio Data Format Select

11: DSP Format

10: I

2S Format

01: Left justified

00: Right justified

3:2

PAIFTXWL

[1:0]

PAIF Transmitter Audio Data Word Length

11: 32 bits (see Note)

10: 24 bits

01: 20 bits

00: 16 bits

PAIFTXLRP

In LJ/RJ/I

2S modes

0 = LRCLK not inverted

1 = LRCLK inverted

In DSP Format:

0 = DSP Mode A

1 = DSP Mode B

PAIFTXBCP

PAIF Receiver BCLK polarity

0 = BCLK not inverted

1 = BCLK inverted

R13

PAIF 4

0Dh

8:7

PAIFTX_SRC

[1:0]

Primary Audio Interface Transmitter Source

00 = S/PDIF received data.

01 = ADC digital output data.

10 = SAIF Receiver data

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