WM8580 datasheet(84/97 Pages) WOLFSON

84 / 97 page

WM8580

Production Data

PD Rev 4.3 August 2007

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

TXVAL_OVWR

S/PDIF Transmitter Validity Overwrite Mode

0 = disabled, validity bit is 0 when transmitter sources ADC,

PAIF or SAIF, or is matches the S/PDIF input validity when

S/PDIF transmitter sources S/PDIF receiver.

1 = enabled, validity bit transmitted for subframe 0 is defined

by TXVAL_SF0, validity bit transmitted for subframe 1 is

defined by TXVAL_SF1.

TXVAL_SF0

Overwrite Mode S/PDIF Transmitter Validity Sub-Frame 0

0 = transmit validity = 0

1 = transmit validity = 1

TXVAL_SF1

Overwrite Mode S/PDIF Transmitter Validity Sub-Frame 1

0 = transmit validity = 0

1 = transmit validity = 1

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

Indicates S/PDIF source number.

No definitions are attached to data.

Channel Number for Subframe 1

CHNUM1

Channel Status Bits[21:20]

0000 = Do not use channel number

0001 = Send to Left Channel

0010 = Send to Right Channel

5:4

CHNUM1[1:0]

0000 = Do not use channel number

Channel Number for Subframe 2

CHNUM2

Channel Status Bits[23:22]

0000 = Do not use channel number

0001 = Send to Left Channel

0010 = Send to Right Channel

R33

SPDTXCHAN 3

21h

7:6

CHNUM2[1:0]

0000 = Do not use channel number

3:0

FREQ[3:0]

0001

Sampling Frequency Indicated.

Refer to S/PDIF specification IEC60958-3 for details.

0001 = Sampling Frequency not indicated.

R34

SPDTXCHAN 4

22h

5:4

CLKACU[1:0]

Clock Accuracy of Transmitted clock.

00 = Level II

01 = Level I

10 = Level III

11 = Interface frame rate not matched to sampling frequency.

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