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 TX 1 AUDIO OUTPUT CONVERTER WIDGET (NID = 04H)
STREAM FORMAT VERB
Verb ID
Ah
Payload [15:0]
0000h
Response[31:0]
Get
Set
Bits [31:0] in the table below
00000000h
2h
Bits [15:0] in the table below
Bit
Bitfield Name
Rsvd
RW
R
Default
0000h
0
Description
[31:16]
[15]
Reserved
Type
RW
Used to set the format of the stream:
0 = PCM
1 = Non-PCM (i.e. AC3 or Software Formatted S/PDIF)
Used to set the base rate frequency:
0h = 48 kHz
[14]
Base
Mult
RW
RW
0
1h = 44.1 kHz
[13:11]
0h
Used to set the base rate multiplication factor:
0h = x1 (48kHz, 44.1kHz or less)
1h = x2 (96kHz, 88.2kHz, 32kHz)
2h = Reserved
3h = x4 (192kHz, 176.4kHz)
4h-7h = Reserved
[10:8]
Div
RW
0h
Used to set the base rate division factor:
0h = divide by 1 (48kHz, 44.1kHz)
1h =Reserved
2h = divide by 3 (32kHz)
3h-7h = Reserved
[7]
Rsvd
Bits
R
0
Reserved
[6:4]
RW
4h
Bits per Sample:
0h = Reserved
1h = 16 bits
2h = 20 bits
3h = 24 bits
4h = 32 bits (Software Formatted or Float 32)
5h-7h = Reserved
[3:0]
Chan
RW
1h
Number of Channels in each frame of the stream:
0h = 1 channel
1h = 2 channels
2h-Fh = reserved
Notes:
1. When the internal path (of ADC1 or MIC1 or MIC2) to S/PDIF TX 1 is active, Mult, Base & Div become read only and are
programmed by the WM8850 to match the sourced node settings.
2. When Software Formatted S/PDIF is selected, and the S/PDIF TX 1 is sourcing the HDA Link, the S/PDIF output is
driven low until stream ID is assigned.
PP, April 2011, Rev 3.2
105
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
