alc880 Realtek Semiconductor Corporation, alc880 Datasheet - Page 52

• Manufacturer Part Number: alc880
• Description: 7.1 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

8.10. Verb – Set Processing Coefficient (Verb ID=4h)
8.11. Verb – Get Amplifier Gain (Verb ID=Bh)
This verb is used to get gain/attenuation settings from each widget.
7.1 Channel High Definition Audio Codec
Set Command Format
Bit [31:28]
Codec Response for All NID
Get Command Format
Bit [31:28]
‘Get’ Payload in Command Bit[15:0]
Codec Response for NID=07h (MIC ADC), 08h(LINE ADC) and 09h (MIX ADC)
CAd=X
CAd=X
31:0
12:4
31:8
3:0
6:0
Bit
Bit
Bit
15
14
13
7
Node ID=Xh
Node ID=Xh
Bit [27:20]
Bit [27:20]
Reserved. Read as 0
Reserved. Read as 0’s
Description
0’s
Description
Get Input/Output
0: Input amplifier gain is requested
1: Output amplifier gain is requested
Get Left/Right
0: Right amplifier gain is requested
1: Left amplifier gain is requested
Index[3:0] for Input Source
Select amplifier for this converter. If a widget has no multiple input sources, the index will be ignored.
Description
0’s
Bit-15 is 0 in ‘Get Amplifier Gain’: Input Amplifier Mute, 0: Unmute, 1: Mute
Bit-15 is 1 in ‘Get Amplifier Gain’: Read as 0 (No Output Amplifier Mute)
Bit-15 is 0 in ‘Get Amplifier Gain’: Input Amplifier Gain [6:0]. 7-bit step value (0~35) specifying the
volume from 0B~+35dB in 1dB steps
Bit-15 is 1 in ‘Get Amplifier Gain’: Read as 0’s (No Output Amplifier Mute)
Table 43. Verb – Set Processing Coefficient (Verb ID=4h)
Table 44. Verb – Get Amplifier Gain (Verb ID=Bh)
Verb ID=Bh
Verb ID=4h
Bit [19:16]
Bit [19:16]
‘Get’ payload [15:0]
Payload Bit [15:0]
Payload Bit [15:0]
Coefficient [15:0]
42
Track ID: JATR-1076-21
Bit[7:0] are responsible for ‘Get’
Codec Response Format
Codec Response Format
Response [31:0]
Response [31:0]
0’s for all nodes
ALC880 Series
Datasheet
Rev. 1.4