Pre-Production
WM8850
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
S/PDIF CONVERTER CONTROL VERB
Verb ID
Payload [7:0]
Response[31:0]
Bits [31:0] in the table below
00000000h
Get
F0Dh
70Dh
70Eh
0000h
Set1
Set2
Bits [7:0] in the table below
Bits [15:8] in the table below
00000000h
Bit
Bitfield Name
RW
R
Default
Description
[31:15]
[14:8]
[7]
Rsvd
CC
00000h
Reserved
RW
RW
RW
00h
0
Category Code. Channel Status bits [14:8] – see IEC 60958-3 for details.
Generation Level, Channel Status bit [15] - see IEC 60958-3 for details.
Professional, Channel Status bit[0]:
L
[6]
PRO
0
0 = Consumer Channel Status (40-bits)
1 = Professional Channel Status (192-bits )
Non-Audio, Channel Status bit[1]:
[5]
[4]
/AUDIO
COPY
RW
RW
0
0
0 = PCM formatted data
1 = non-PCM formatted data
Copyright, Channel Status bit[2]:
0 = indicates copyright asserted (i.e. S/PDIF Channel Status bit[2] set to
1)
1 = indicates no copyright asserted (i.e. S/PDIF Channel Status bit[2] set
to 0)
Note: The HDA specifiction, and the IEC 60958-3 specification are the
inverse of each other. To comply with both, the WM8850 inverts the
written value.
[3]
[2]
PRE
RW
RW
0
0
Pre-emphasis, Channel Status bit[3]:
0 = no pre-emphasis
1 = 50/15 us pre-emphasis
VCFG
Validity Configuration Control - determines what happens to the audio
data, should an invalid sample occur (invalid samples occur when SRC2
is in use but not locked, EF_STREAM_ERR is asserted, or the stream ID
is 0).
0 = pass data as received by the S/PDIF Tx 1.
1 = overwrite invalid data with all zeros (for the invalid sub frame only).
Validity:
[1]
V
RW
0
0 = Indicates valid data
1 = Indicates invalid data
If V=1, the transmitted validity flag is set to 1.
If V=0, the transmitted validity flag is set to 1 if there is an invalid sample
being transmitted. Invalid samples may occur when SRC2 is in use but
not locked, EF_STREAM_ERR is asserted, or the stream ID is 0.
[0]
DigEn
RW
0
Digital Enable:
0 = S/PDIF audio path disabled
1 = S/PDIF audio path enabled
Note: When Software Formatted S/PDIF is selected, verb settings for channel status and validity are not used
PP, April 2011, Rev 3.2
109
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
