WM8860 datasheet(55/184 Pages) WOLFSON

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Pre-Production

WM8860

PP, April 2011, Rev 3.2

S/PDIF TX 1 (NID = 04h)

Table 26 gives a summary of the S/PDIF Tx 1 node:

NODE SUMMARY INFORMATION

NID

04h

Widget Type

Audio Output

Supported Get Verbs

Ah, F00h, F06h, F08h, F0Dh, F73h, F80h, F81h, F85h, F8Eh

Supported Set Verbs

2h, 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

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 26 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.

Under default conditions, the S/PDIF Tx 1 node will process data received from the HDA interface. In

this case, the S/PDIF stream is controlled directly from the Stream Format Verb, as illustrated in

Figure 14.

Figure 14 S/PDIF Transmit Function

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 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

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