ALC262 datasheet(65/76 Pages) REALTEK

65 / 76 page

ALC262 Series

Datasheet

4-Ch DAC and 6-Ch ADC High Definition Audio Codec

Track ID: JATR-1076-21

Rev. 1.7

9.40. Get/Set Volume Knob Widget (NID=21h)

(Verb ID=F0Fh/70Fh)

Table 71. Get/Set Volume Knob Widget (NID=21h) (Verb ID=F0Fh/70Fh)

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=F0Fh

0’s

Bit[31:8]=0’s, Bit[7:0] is volume

Codec Response for NID=21h (Volume Knob Widget)

Bit

Description

31:8

Reserved.

Direct.

0: The volume generated by an external HW volume control will be sent by unsolicited response.

Software is responsible for programming the amplifier appropriately

1: The volume generated by an external HW volume control will directly affect amplifier volume

6:0

Volume in steps.

Set Command Format (Verb ID=70Yh, Set Control 2)

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=70Fh

Bit[7] is ‘Direct’ control

0’s

‘Payload’ in Set Command for NID=21h (Volume Knob Widget)

Bit

Description

31:8

Reserved.

Direct.

0: The volume generated by an external HW volume control will be sent by unsolicited response.

Software is responsible for programming the amplifier appropriately

1: The volume generated by an external HW volume control will directly affect amplifier volume

6:0

Reserved.

Note: Other nodes will ignore this verb.

9.41. Get/Set Subsystem ID [31:0]

(Verb ID=F20h / 723h~720h to Set Bit[31:0])

Table 72. Get/Set Subsystem ID [31:0] (Verb ID=F20h / 723h~720h to Set Bit[31:0])

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=F20h

0’s

32 bits response

Codec Response for NID=01h (Audio Function Group)

Bit

Description

31:16

Subsystem ID[23:8]. (Default=10ECh).

15:8

Subsystem ID[7:0]. (Default=02h).

7:0

Assembly ID[7:0]. (Default=62h).

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