alc885-gr Realtek Semiconductor Corporation, alc885-gr Datasheet - Page 60

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alc885-gr

Manufacturer Part Number
alc885-gr
Description
7.1+2 Channel High-performance Hda Codec With Content Protection
Manufacturer
Realtek Semiconductor Corporation
Datasheet

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8.11. Verb – Get Amplifier Gain (Verb ID=Bh)
This verb is used to get gain/attenuation settings from each widget.
7.1+2 Channel High-Performance HDA Codec
With Content Protection
Get Command Format
Bit [31:28]
‘Get’ Payload in Command Bit[15:0]
Codec Response for 07h (MIC ADC), 08h (LINE ADC) and 09h (MIX ADC)
Codec Response for NID=0Bh (MIXER Sum Widget)
CAd=X
12:4
31:8
31:8
3:0
6:0
6:0
Bit
Bit
Bit
15
14
13
7
7
Node ID=Xh
Bit [27:20]
Reserved. Read as 0.
Reserved. Read as 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 (0~46) specifying the
volume from –16dB~+30dB in 1.0dB steps
Bit-15 is 1 in ‘Get Amplifier Gain. Read as 0’s (No Output Amplifier Mute)
Description
0’s
Bit-15 is 0 in ‘Get Amplifier Gain. Input Amplifier Mute. 0: Unmute 1: Mute (Default for all Index)
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 (0~31) specifying the
volume from –34.5dB~+12dB in 1.5dB steps
Bit-15 is 1 in ‘Get Amplifier Gain. Read as 0’s (No Output Amplifier Mute)
Table 54. Verb – Get Amplifier Gain (Verb ID=Bh)
Verb ID=Bh
Bit [19:16]
‘Get’ payload [15:0]
Payload Bit [15:0]
52
Bit[7:0] are responsible for ‘Get’
Codec Response Format
Response [31:0]
ALC885 Series
Datasheet
Rev. 1.1