WM8581 datasheet(83/94 Pages) WOLFSON

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WM8581

PP Rev 1.0 March 2006

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

2:1

RXINSEL[1:0]

S/PDIF Receiver input mux select. Note that the general purpose

inputs must be configured using GPOxOP to be either CMOS or

comparator inputs if selected by RXINSEL.

00 = SPDIFIN1

01 = SPDIFIN2 (MFP3)

10 = SPDIFIN3 (MFP4)

11 = SPDIFIN4 (MFP5)

R37

INTMASK

25h

8:0

MASK[8:0]

000000000

When a flag is masked, it does not update the Error Register or

contribute to the interrupt pulse.

0 = unmask, 1 = mask.

MASK[0] = mask control for UPD_UNLOCK

MASK[1] = mask control for INT_INVALID

MASK[2] = mask control for INT_CSUD

MASK[3] = mask control for INT_TRANS_ERR

MASK[4] = mask control for UPD_AUDIO_N

MASK[5] = mask control for UPD_PCM_N

MASK[6] = mask control for UPD_CPY_N

MASK[7] = mask control for UPD_DEEMPH

MASK[8] = mask control for UPD_REC_FREQ

3:0

GPO1OP[3:0]

0000

7:4

GPO2OP[3:0]

0001

0000 = INTB

0001 = V

0010 = U

0011 = C

0100 = P

0101 = SFRM_CLK

0110 = 192BLK

0111 = UNLOCK

1000 = CSUD

1001 = REC_FREQ192

1010 = ZFLAG

1011 = NON_AUDIO

1100 = CPY_N

1101 = DEEMP

1110 = Set GPO as S/PDIF input (standard CMOS input buffer).

Only applicable for GPO3/4/5.

1111 = Set GPO as S/PDIF input (‘comparator’ input for AC

coupled consumer S/PDIF signals). Only applicable for GPO3/4/5

R38

GPO1

26h

FILLMODE

Determines what S/PDIF Receiver should do with corrupted or

invalid data:

0 = Data from S/PDIF Receiver remains static at last valid sample.

1 = Data from S/PDIF Receiver is output as all zeros.

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