WM8804 datasheet(57/66 Pages) WOLFSON

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Production Data

WM8804

PD Rev 4.1 September 2007

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

5:4

REC_FREQ

[1:0]

Recovered Frequency Flag

Indicates recovered S/PDIF clock frequency:

00 = 192kHz

01 = 96kHz or 88.2kHz

10 = 48kHz or 44.1kHz

11 = 32kHz

UNLOCK

Unlock Flag

Indicates that the S/PDIF Rx clock recovery

circuit is unlocked.

0 = Locked onto incoming S/PDIF stream.

1 = Not locked onto the incoming S/PDIF

stream.

CON/PRO

Use Of Channel Status Block

0 = Consumer Mode

1 = Professional Mode

The WM8804 is a consumer mode device.

Detection of professional mode may give

erroneous behaviour.

AUDIO_N

Linear PCM Identification

0 = Data word represents audio PCM samples.

1 = Data word does not represent audio PCM

samples.

CPY_N

0 = Copyright is asserted for Rx data.

1 = Copyright is not asserted for Rx data.

DEEMPH

Additional Format Information

0 = Recovered S/PDIF data has no pre-

emphasis.

1 = Recovered S/PDIF data has pre-emphasis.

5:4

Reserved

Reserved for additional de-emphasis modes.

R13

RXCHAN1

0Dh

(read-only)

7:6

CHSTMODE

[1:0]

Channel Status Mode

00 = Only valid mode for consumer

applications.

R14

RXCHAN2

0Eh

(read-only)

7:0

CATCODE

[7:0]

00000000

Category Code

Refer to S/PDIF specification (IEC 60958-3) for

full details.

0x00h indicates “general” mode.

3:0

SRCNUM

[3:0]

0000

S/PDIF Source Number

Refer to S/PDIF specification (IEC 60958-3) for

full details.

5:4

CHNUM1[1:0]

Channel Number For Sub-frame 1

00 = do not use channel number

01 = channel 1 to left channel

10 = channel 1 to right channel

R15

RXCHAN3

0Fh

(read-only)

7:6

CHNUM2[1:0]

Channel Number For Sub-frame 2

00 = do not use channel number

01 = channel 2 to left channel

10 = channel 2 to right channel

R16

RXCHAN4

3:0

FREQ[3:0]

0001

Indicated Sampling Frequency

Refer to S/PDIF specification (IEC 60958-3) for

full details.

WM8804 Datasheet(PDF) 57 Page - Wolfson Microelectronics plc

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