alc262w-vd2-gr Realtek Semiconductor Corporation, alc262w-vd2-gr Datasheet - Page 75

• Manufacturer Part Number: alc262w-vd2-gr
• Description: 4-channel Dac And 6-channel Adc High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

8.41. Get/Set Volume Knob Widget (NID=21h)
8.42. Get/Set Subsystem ID [31:0]
4-Ch DAC and 6-Ch ADC High Definition Audio Code
Get Command Format
Codec Response for NID=21h (Volume Knob Widget)
Set Command Format (Verb ID=70Yh, Set Control 2)
‘Payload’ in Set Command for NID=21h (Volume Knob Widget)
Note: Other nodes will ignore this verb.
Get Command Format
Codec Response for NID=01h (Audio Function Group)
Bit [31:28]
Bit [31:28]
Bit [31:28]
CAd=X
CAd=X
CAd=X
31:16
31:8
31:8
15:8
6:0
6:0
7:0
Bit
Bit
Bit
7
7
(Verb ID=F0Fh/70Fh)
(Verb ID=F20h/723h~720h to Set Bit[31:0])
Table 76. Get/Set Subsystem ID [31:0] (Verb ID=F20h / 723h~720h to Set Bit[31:0])
Description
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
Volume in steps.
Description
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
Reserved.
Description
Subsystem ID[23:8]. (Default=10ECh).
Subsystem ID[7:0]. (Default=02h).
Assembly ID[7:0]. (Default=62h).
Node ID=Xh
Node ID=Xh
Node ID=Xh
Bit [27:20]
Bit [27:20]
Bit [27:20]
Table 75. Get/Set Volume Knob Widget (NID=21h) (Verb ID=F0Fh/70Fh)
Verb ID=F0Fh
Verb ID=70Fh
Verb ID=F20h
Bit [19:8]
Bit [19:8]
Bit [19:8]
Bit[7] is ‘Direct’ control
Payload Bit [7:0]
Payload Bit [7:0]
Payload Bit [7:0]
66
0’s
0’s
Bit[31:8]=0’s, Bit[7:0] is volume
Track ID: JATR-1076-21
Codec Response Format
Codec Response Format
Codec Response Format
Response [31:0]
Response [31:0]
Response [31:0]
32 bits response
0’s
ALC262 Series
Datasheet
Rev. 1.9