WM8850
Pre-Production
S/PDIF RX (NID = 05h)
Table 27 gives a summary of the S/PDIF Rx node:
NODE SUMMARY INFORMATION
05h
Audio Input
NID
Widget Type
Supported Get Verbs
Ah, F00h, F02h, F03h, F06h, F08h, F0Dh, F80h, F8Eh, F91h,
F92h, F93h
Supported Set Verbs
2h, 703h, 706h, 708h, 70Dh, 78Eh, 793h
Stream Drop
Unsolicited Responses
Sample Drop
SRC1 Lock Status Change
Digital Converter Register Update
Validity Flag Status Change
Channel Status Update
Non-Audio Flag Status Change
Data Receive Error
Vendor-Specific Verbs
F80h : S/PDIF Verb
F8Eh, 78Eh : Unsolicited Response Priority Control Verb
F91h : Get Channel Status Verb
F92h : Get Non-Audio Flag Verb
F93h, 793h : Sample Overwrite Control Verb
Table 27 S/PDIF Rx Node Summary Information
The S/PDIF Rx node provides control over the S/PDIF receiver circuitry and the optional SRC1
processing stage. The S/PDIF receiver measures the actual sample rate of the incoming S/PDIF
signal, recovers the payload data and decodes channel status information. The recovered data can
then be passed through SRC1 (Sample Rate Converter) if necessary to interface to the HDA link
domain.
The Digital Converter Verb is supported by the S/PDIF Rx node, allowing readback of selected
channel status information as defined in the HDA Specification. It is also possible to readback all 40-
bits of the channel status data as defined in IEC-60958-3, using the vendor-specific Get Channel
Status Verb.
PP, April 2011, Rev 3.2
60
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
