WM8580 datasheet(80/92 Pages) WOLFSON

80 / 92 page

WM8580

Production Data

PD Rev 4.0 February 2007

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

ADCOSR

ADC oversample rate select

0 = 128/64 x oversampling

1 = 64/32 x oversampling

ADCHPD

ADC high-pass filter disable:

0 = high-pass filter enabled

1 = high-pass filter disabled

7:5

ADCRATE[2:0]

010

ADC Rate Control (only used when the S/PDIF Transmitter is the

only interface sourcing the ADC)

000 = 128fs

001 = 192fs

010 = 256fs

011 = 384fs

100 = 512fs

101 = 768fs

110 = 1152fs

VMIDSEL

VMID Impedance Selection

0 = High impedance, power saving

1 = Low impedance, fast power-on

1:0

TXSRC[1:0]

S/PDIF Transmitter Data Source

00 = S/PDIF received data (see REAL_THROUGH)

01 = ADC digital output data.

10 = Secondary Audio Interface

11 = Audio Interface received data

OVWCHAN

Only used if TXSRC==00. Overwrites the ‘through-path’ Channel

Bit with values determined by the channel-bit control registers.

0 = Channel data equal to recovered channel data.

1 = Channel data taken from channel status registers.

R30

SPDTXCHAN 0

1Eh

REAL_

THROUGH

S/PDIF Through Mode Control

0 = SPDIFOP pin sources output of S/PDIF Transmitter

1 = SPDIFOP pins sources output of S/PDIF IN Mux

CON/PRO

0 = Consumer Mode

1 = Professional Mode (not supported by WM8580)

AUDIO_N

0 = S/PDIF transmitted data is audio PCM.

1 = S/PDIF transmitted data is not audio PCM.

CPY_N

0 = Transmitted data has copyright asserted.

1 = Transmitted data has no copyright assertion.

5:3

DEEMPH[2:0]

000

000 = Data from Audio interface has no pre-emphasis.

001 = Data from Audio interface has pre-emphasis.

010 = Reserved (Audio interface has pre-emphasis).

011 = Reserved (Audio interface has pre-emphasis).

All other modes are reserved and should not be used.

R31

SPDTXCHAN 1

1Fh

7:6

CHSTMODE

[1:0]

00 = Only valid mode for consumer applications.

R32

SPDTXCHAN 2

20h

7:0

CATCODE

[7:0]

00000000

Category Code. Refer to S/PDIF specification for details.

00h indicates “general” mode

3:0

SRCNUM

[3:0]

0000

Source Number. No definitions are attached to data.

Channel Number for Subframe 1

CHNUM1

Channel Status Bits[23:20]

0000 = Do not use channel number

0001 = Send to Left Channel

R33

SPDTXCHAN 3

21h

5:4

CHNUM1[1:0]

0010 = Send to Right Channel

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