WM8850
Pre-Production
S/PDIF TX 1 (NID = 04h)
Table 26 gives a summary of the S/PDIF Tx 1 node:
NODE SUMMARY INFORMATION
04h
Audio Output
NID
Widget Type
Supported Get Verbs
Ah, F00h, F03h, F06h, F08h, F0Dh, F73h, F80h, F81h, F85h,
F8Eh
Supported Set Verbs
2h, 703h, 706h, 708h, 70Dh, 70Eh, 773h, 780h, 781h, 782h, 783h,
784h, 785h, 78Eh
Unsolicited Responses
SRC2 Lock Status
Stream Error
Vendor-Specific Verbs
F73h, 773h : Internal Path Verb
F80h, 780h : S/PDIF Verb
F81h, 781h, 782h, 783h, 784h : Tx Channel Status Control Verb
F85h, 785h : Channel Status Data Packing Configuration Verb
F8Eh, 78Eh : Unsolicited Response Priority Control Verb
Table 28 S/PDIF Tx 1 Node Summary Information
The S/PDIF Tx 1 node controls the formatting of the IEC-60958-3 compatible S/PDIF output stream
and also the optional Sample Rate Conversion processing stage (SRC2).
Under default conditions, the S/PDIF Tx 1 node will process data received from the HDA interface. It
is also possible to select ADC1, MIC1 or MIC2 as the data source, using the vendor-specific Internal
Path Verb.
When ADC1, MIC1 or MIC2 is selected as the input to the S/PDIF Tx 1 node, the SRC2 is bypassed,
the Mult / Base / Div fields in the Stream Format Verb become read-only and are set according to the
selected source node.
SET VERB
BIT
BITFIELD
NAME
DEFAULT
DESCRIPTION
773h
7:0
Path Sel
00h
Selects the source of the S/PDIF Tx 1 node:
00h = HDA Link
02h = ADC1
03h = MIC1
15h = MIC2
PP, April 2011, Rev 3.2
66
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
