wm8580a Wolfson Microelectronics plc, wm8580a Datasheet - Page 90

• Manufacturer Part Number: wm8580a
• Description: Multichannel Codec With S/pdif Transceiver
• Manufacturer: Wolfson Microelectronics plc

WM8580
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REGISTER
SPDTXCHAN 1
SPDTXCHAN 2
SPDTXCHAN 3
SPDTXCHAN 4
SPDTXCHAN 5
ADDRESS
R31
R32
R33
R34
R35
1Fh
20h
21h
22h
23h
BIT
5:3
7:6
7:0
3:0
5:4
7:6
3:0
5:4
3:1
5
6
0
1
2
0
DEEMPH[2:0]
CHNUM1[1:0]
CHNUM2[1:0]
CLKACU[1:0]
TXVAL_SF0
TXVAL_SF1
CHSTMODE
FREQ[3:0]
TXWL[2:0]
CON/PRO
CATCODE
AUDIO_N
SRCNUM
MAXWL
LABEL
CPY_N
[1:0]
[7:0]
[3:0]
DEFAULT
00000000
0000
0001
000
101
11
00
00
00
0
0
0
0
0
1
Overwrite Mode S/PDIF Transmitter Validity Sub-Frame 0
Overwrite Mode S/PDIF Transmitter Validity Sub-Frame 1
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.
Category Code. Refer to S/PDIF specification for details.
00h indicates “general” mode
Indicates S/PDIF source number.
No definitions are attached to data.
Channel Number for Subframe 1
CHNUM1
00
01
10
11
Channel Number for Subframe 2
CHNUM2
00
01
10
11
Sampling Frequency Indicated.
Refer to S/PDIF specification IEC60958-3 for details.
0001 = Sampling Frequency not indicated.
Clock Accuracy of Transmitted clock.
Maximum Audio sample word length
Audio Sample Word Length.
000 = Word Length Not Indicated
TXWL[2:0]
001
010
00 = Level II
01 = Level I
10 = Level III
11 = Interface frame rate not matched to sampling frequency.
0 = transmit validity = 0
1 = transmit validity = 1
0 = transmit validity = 0
1 = transmit validity = 1
0 = 20 bits
1 = 24 bits
DESCRIPTION
Channel Status Bits[21:20]
0000 = Do not use channel number
0001 = Send to Left Channel
0010 = Send to Right Channel
0000 = Do not use channel number
Channel Status Bits[23:22]
0000 = Do not use channel number
0001 = Send to Left Channel
0010 = Send to Right Channel
0000 = Do not use channel number
MAXWL==1
20 bits
22 bits
PD, Rev 4.7, March 2009
Production Data
MAXWL==
0
16 bits
18 bits
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