ALC892 datasheet(65/90 Pages) REALTEK

65 / 90 page

ALC892

Datasheet

7.1+2 Channel HD Audio Codec with Content Protection

Track ID: JATR-2265-11

Rev. 1.2

8.28. Verb – Set Configuration Default Bytes 0, 1, 2, 3

(Verb ID=71Ch/71Dh/71Eh/71Fh for Bytes 0, 1, 2, 3)

The BIOS can use this verb to figure out the default conditions for the Pin Widgets 14h~1Bh, 11h, 12h,

1Eh, and 1Fh, e.g., placement and expected default device.

Table 61. Verb – Set Configuration Default Bytes 0, 1, 2, 3

Set 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=Xh

Verb ID=71Ch,

71Dh, 71Eh, 71Fh

Label [7:0]

0’s for All Nodes

Note: Supported by Pin Widget NID=14h~1Bh (Port-A~Port-H), 1Ch (CD-IN), 1Dh (BEEP-IN), 1Eh (SPDIF-OUT), 1Fh

(SPDIF-IN), 11h (SPDIF-OUT2), and 12h (Digital MIC). Other widgets will ignore this verb.

Codec Response for All NID

Bit

Description

31:0

0’s.

8.29. Verb – Get BEEP Generator (Verb ID=F0Ah)

Table 62. Verb – Get BEEP Generator (Verb ID= F0Ah)

Get 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=Xh

Verb ID= F0Ah

0’s

Divider [7:0]

‘Response’ for NID=01h (Audio Function Group)

Bit

Description

31:8

Reserved.

7:0

Frequency Divider, F[7:0].

The internal BEEP frequency is the result of dividing the 48kHz clock by 4 times the number specified in

F[7:0].

The lowest tone is 48kHz/(255×4)=47Hz.

The highest tone is 48kHz/(1×4)=12kHz.

A value of 00h in F[7:0] disables the internal BEEP generator and allows external PCBEEP input.

Codec Response for Other NID

Bit

Description

31:0

0’s.

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