WM8580GEFTSLASHV datasheet(57/92 Pages) WOLFSON

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Production Data

WM8580

PD Rev 4.0 February 2007

ADDRESS

BIT

LABEL

CHANNEL

STATUS BIT

DEFAULT

DESCRIPTION

MAXWL

Maximum Audio sample word length

0 = 20 bits

1 = 24 bits

Audio Sample Word Length.

000 = Word Length Not Indicated

TXWL[2:0]

MAXWL==1

MAXWL==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

TXWL[2:0]

35:33

101

All other combinations reserved

R35

SPDTXCHAN 5

23h

7:4

ORGSAMP

[3:0]

39:36

0000

Original Sampling Frequency. See S/PDIF

specification for details.

0000 = original sampling frequency not

indicated

Table 53 S/PDIF Transmitter Channel Bit Control 5

S/PDIF RECEIVER

INPUT SELECTOR

The S/PDIF receiver has one dedicated input, SPDIFIN1. This pin is a IEC-60958-3-compatible

comparator input by default or, if SPDIFIN1MODE is set, the pin will be a CMOS-compatible input.

There are three other pins which can be configured as either S/PDIF inputs or general purpose

outputs (GPOs). The four S/PDIF inputs are multiplexed to allow one input to go to the S/PDIF

receiver for decoding. The S/PDIF receiver can be powered down using the SPDIFRXD register bit.

Table 54 S/PDIF Receiver Input Selection Register

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

SPDIFIN1MODE

Selects the input circuit type for the SPDIFIN1 input

0 = CMOS-compatible input

1 = Comparator input. Compatible with 500mVpp AC

coupled consumer S/PDIF input signals as defined in

IEC60958-3.

R36

SPDMODE

24h

2:1

RXINSEL[1:0]

S/PDIF Receiver input mux select.

The general purpose inputs must be configured using

GPOxOP to be either CMOS or comparator inputs if

selected by RXINSEL.

00 = Select SPDIFIN1

01 = Select SPDIFIN2 (MFP3)

10 = Select SPDIFIN3 (MFP4)

11 = Select SPDIFIN4 (MFP5)

3:0

GPO3OP[3:0]

0010

R39

GPO2

26h

7:4

GPO4OP[3:0]

0011

R40

GPO3

27h

3:0

GPO5OP[3:0]

0100

GPO pin Configuration Select.

1110 = Set GPO as S/PDIF input (CMOS-compatible

input).

1111 = Set GPO as S/PDIF input (compatible with

500mVpp AC coupled consumer S/PDIF input signals

as defined in IEC-60958-3).

For GPO defaults, see Table 66.

R51

PWRDN 2

33h

SPDIFRXD

S/PDIF Receiver powerdown.

0 = S/PDIF Receiver enabled

1 = S/PDIF Receiver disabled

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