AD1986A Analog Devices, AD1986A Datasheet - Page 26

• Manufacturer Part Number: AD1986A
• Description: HD Audio SoundMAX Codec
• Manufacturer: Analog Devices

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AD1986A
AUX VOLUME (REGISTER 0x16)
This register controls the AUX_IN gain and mute to the analog mixer section. The volume register contains five bits, generating
32 volume steps of −1.5 dB each for a range of +12.0 dB to −34.5 dB. This does not control the record ADC gain (see Register 0x1C).
Reg
0x16
Table 82.
Register
L/RV [4:0]
(Left/Right
Volume)
L/RM
(Left/Right
Mute)
x
FRONT DAC VOLUME (REGISTER 0x18)
This register controls the front DAC gain and mute to the analog mixer section. The volume register contains five bits, generating
32 volume steps of −1.5 dB each for a range of +12.0 dB to −34.5 dB.
Reg
0x18
Table 83.
Register
L/RV [4:0]
(Left/Right Volume)
L/RM
(Left/Right Mute)
x
4
Name
AUX
Volume
Name
Front DAC
Volume
Function
Controls the left/right channel gains of this input to the analog mixer from +12 dB to −34.5 dB. The least significant bit
represents −1.5 dB.
L/RM
0
0
0
1
Mutes the left/right channels independently.
Reserved.
D15
LM
D15
LM
Function
Controls the left/right channel gains of this input to the analog mixer from +12 dB to −34.5 dB. The least significant
bit represents −1.5 dB.
L/RM
0
0
0
1
Mutes the left/right channels independently.
Reserved.
D14
x
D14
x
L/RV [4:0]
0 0000
0 1000
1 1111
x xxxx
D13
x
D13
x
L/RV [4:0]
0 0000
0 1000
1 1111
x xxxx
D12
LV4
D12
LV4
D11
LV3
D11
LV3
D10
LV2
D10
LV2
Rev. 0 | Page 26 of 56
Function
12 dB gain
0 dB
−34.5 dB attenuation
Mute
D9
LV1
D9
LV1
Function
+12 dB gain
0 dB
−34.5 dB attenuation
Mute
D8
LV0
D8
LV0
D7
RM
D7
RM
D6
x
D6
x
x
x
D5
D5
D4
RV4
D4
RV4
D3
RV3
D3
RV3
RV2
RV2
D2
D2
Default
Default
Default: muted (0x1)
Default: 0
D1
RV1
D1
RV1
Default
Default
Default: muted (0x1)
Default: 0
D0
RV0
D0
RV0
Default
0x8888
Default
0x8888