WM8580
Production Data
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
4
TXVAL_OVWR
0
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.
5
6
TXVAL_SF0
TXVAL_SF1
0
0
Overwrite Mode S/PDIF Transmitter Validity Sub-Frame 0
0 = transmit validity = 0
1 = transmit validity = 1
Overwrite Mode S/PDIF Transmitter Validity Sub-Frame 1
0 = transmit validity = 0
1 = transmit validity = 1
R31
SPDTXCHAN 1
1Fh
0
1
CON/PRO
AUDIO_N
CPY_N
0
0
0 = Consumer Mode
1 = Professional Mode (not supported by WM8580)
0 = S/PDIF transmitted data is audio PCM.
1 = S/PDIF transmitted data is not audio PCM.
0 = Transmitted data has copyright asserted.
1 = Transmitted data has no copyright assertion.
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.
00 = Only valid mode for consumer applications.
2
0
5:3
DEEMPH[2:0]
000
7:6
7:0
CHSTMODE
[1:0]
00
R32
SPDTXCHAN 2
20h
CATCODE
[7:0]
00000000
Category Code. Refer to S/PDIF specification for details.
00h indicates “general” mode
R33
3:0
5:4
SRCNUM
[3:0]
0000
00
Indicates S/PDIF source number.
No definitions are attached to data.
Channel Number for Subframe 1
SPDTXCHAN 3
21h
CHNUM1[1:0]
CHNUM1
Channel Status Bits[21:20]
00
01
10
11
0000 = Do not use channel number
0001 = Send to Left Channel
0010 = Send to Right Channel
0000 = Do not use channel number
7:6
CHNUM2[1:0]
00
Channel Number for Subframe 2
CHNUM2
Channel Status Bits[23:22]
00
01
10
11
0000 = Do not use channel number
0001 = Send to Left Channel
0010 = Send to Right Channel
0000 = Do not use channel number
R34
SPDTXCHAN 4
22h
3:0
5:4
FREQ[3:0]
0001
11
Sampling Frequency Indicated.
Refer to S/PDIF specification IEC60958-3 for details.
0001 = Sampling Frequency not indicated.
Clock Accuracy of Transmitted clock.
00 = Level II
CLKACU[1:0]
01 = Level I
10 = Level III
11 = Interface frame rate not matched to sampling frequency.
PD Rev 4.3 August 2007
84
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
