alc861 Realtek Semiconductor Corporation, alc861 Datasheet - Page 45

• Manufacturer Part Number: alc861
• Description: 7.1 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

8.6. Verb – Set Amplifier Gain (Verb ID=3h)
This verb is used to set amplifier gain/attenuation in each widget.
7.1 Channel High Definition Audio Codec
Set Command Format
Bit [31:28]
‘Set’ Payload in Command Bit[15:0]
CAd=X
11:8
6:0
Bit
15
14
13
12
7
Node ID=Xh
Bit [27:20]
Set Left Amp
Description
Set Output Amp
1: indicates output amplifier gain will be set
Set Input Amp
1 indicates input amplifier gain will be set
1 indicates left amplifier gain will be set
Set Right Amp
1 indicates right amplifier gain will be set
Index Offset (for input amplifiers on Sum widgets and Selector Widgets)
5-bit index offset in connection list is used to select the input gain that will be set on a Sum or a Selector
widget. The index is ignored if the node is not a Sum or a Selector widget, or the ‘Set Input Amp’ bit is
not set
Mute
0: Unmute
1: Mute (-∞ gain)
Gain[6:0]
A 7-bit step value specifying the amplifier gain
Table 33. Verb – Set Amplifier Gain (Verb ID=3h)
Verb ID=3h
Bit [19:8]
‘Set’ payload [7:0]
Payload Bit [7:0]
37
Track ID: JATR-1076-21
Codec Response Format
Response [31:0]
0’s for all nodes
Datasheet
ALC861
Rev. 1.3