WM8777 datasheet(49/103 Pages) WOLFSON

49 / 103 page

Pre-Production

WM8777

PP Rev 3.0 January 2005

ADDRESS

BIT

LABEL

CHANNEL

STATUS

BIT

DEFAULT

DESCRIPTION

3:0

FREQ[3:0]

27:24

0001

Sampling Frequency. See S/PDIF

specification for details.

0001 = Sampling Frequency not indicated.

(3Ch)

S/PDIF

Transmitter

Channel Bit

Control 4

5:4

CLKACU[1:0]

29:28

Clock Accuracy of Generated clock.

00 = Level II

01 = Level I

10 = Level III

11 = Interface frame rate not matched to

sampling frequency.

Table 37 S/PDIF Tx Channel Bit Control 4

ADDRESS

BIT

LABEL

CHANNEL

STATUS

BIT

DEFAULT

DESCRIPTION

MAXPAIFRX_WL

Maximum Audio sample word length

0 = 20 bits

1 = 24 bits

Audio Sample Word Length.

000 = Word Length Not Indicated

TXPAIFRX_

MAXPAIFR

X_WL==1

MAXPAIFR

X_WL==0

001

20 bits

16 bits

010

22 bits

18 bits

100

23 bits

19 bits

101

24 bits

20 bits

110

21 bits

17 bits

3:1

TXPAIFRX_WL

[2:0]

35:33

101

All other combinations reserved

(3Dh)

S/PDIF

Transmitter

Channel Bit

Control 5

7:4

ORGSAMP

[3:0]

39:36

0000

Original Sampling Frequency. See S/PDIF

specification for details.

0000 = original sampling frequency not

indicated

Table 38 S/PDIF Tx Channel Bit Control 5

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