Pre-Production
WM8850
GET VERB
BIT
BITFIELD
NAME
DEFAULT
DESCRIPTION
F91h
39:36
Original
N/A
Original Sampling Frequency
Sampling
Frequency
35:33
32
Sample
Word Length
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Sample Word Length
Max Word Length
Clock Accuracy
Max Word
Length
31:28
27:24
23:20
19:16
15:8
7:6
Clock
Accuracy
Sampling
Frequency
Sampling Frequency
Channel Number
Source Number
Channel
Number
Source
Number
Category
Code
Category Code
Channel
Status Mode
Channel Status Mode
5:4
Additional
De-
Additional De-emphasis Information
emphasis
Information
3
2
1
0
PRE
N/A
N/A
N/A
N/A
Pre-emphasis
Copyright
/COPY
/AUDIO
PRO
Non Audio
Professional/Consumer
Notes:
1. [31:0] are returned when Payload[7:0] = 00h, [39:32] are returned when Payload[7:0] = 01h
2. See IEC-60958-3 for full definitions of the channel status bits
The /AUDIO flag in the channel status for the S/PDIF stream is set by the source of the S/PDIF data
to indicate that the data samples within the S/PDIF stream are not audio PCM samples. In addition,
IEC-61937 specifies a non-audio sync code which can be detected by the WM8850. The WM8850
provides a Non Audio Flag to indicate if the non-audio code has been detected. The Non Audio Flag
can be readback using the vendor-specific Get Non-Audio Flag Verb.
GET VERB
BIT
BITFIELD
NAME
DEFAULT
DESCRIPTION
F92h
0
Non Audio
Flag
0
Indicates the presence of the Non Audio Flag:
0 = Non Audio Flag not asserted
1 = Non Audio Flag asserted
PP, April 2011, Rev 3.2
61
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
