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ALC888S

7.1+2 CHANNEL HIGH DEFINITION AUDIO CODEC WITH TWO INDEPENDENT S/PDIF-OUT

Realtek Semiconductor 

ALC888S & ALC888SDD

Datasheet

8. Supported Verbs and Parameters

This section describes the Verbs and Parameters supported by various widgets in the ALC888S. If a verb

is not supported by the addressed widget, it will respond with 32 bits of ‘0’.

8.1. Verb – Get Parameters (Verb ID=F00h)

The ‘Get Parameters’ verb is used to get system information and the function capabilities of the HDA

codec. All the parameters are read-only. There are a total of 15 ID parameters defined for each widget.

Some parameters are supported only in a specific widget.

Table 19. Verb – Get Parameters (Verb ID=F00h)

Get Parameter Command Format

Codec Response Format

Bit [31:28] Bit [27:20]

Bit [19:8]

Payload Bit [7:0]

Response [31:0]

CAd=X Node ID=00h Verb ID=F00h

Parameter ID[7:0]

32-bit Response

Note: If the parameter ID is not supported, the returned response is 32 bits of ‘0’.

8.1.1. Parameter – Vendor ID (Verb ID=F00h, Parameter ID=00h)

Table 20. Parameter – Vendor ID (Verb ID=F00h, Parameter ID=00h)

Codec Response Format

Bit

Description

31:16

Vendor ID=10ECh (Realtek’s PCI vendor ID)

15:0

Device ID=0888h

Note: The Root Node (NID=00h) supports this parameter.

8.1.2. Parameter – Revision ID (Verb ID=F00h, Parameter ID=02h)

Table 21. Parameter – Revision ID (Verb ID=F00h, Parameter ID=02h)

Codec Response Format

Bit

Description

31:24

Reserved. Read as 0’s

23:20

MajRev. The major version number (in decimal) of the HDA Spec to which the ALC888S is fully

compliant

19:16

MinRev. The minor version number (in decimal) of the HDA Spec to which the ALC888S is fully

compliant

15:8

Revision ID. The vendor’s revision number

00h is for ALC888, 01h is for ALC888S.

7:0

Stepping ID. The vendor’s stepping number within the given Revision ID

Note: The Root Node (NID=00h in the ALC888S) supports this parameter.

7.1+2 Channel High Definition Audio Codec

27

w/Two Independent S/PDIF-OUT

Track ID: JATR-1076-21 Rev. 1.2

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