AD1986A Analog Devices, AD1986A Datasheet - Page 22

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

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AD1986A
Table 74.
Register
L/RV [4:0]
(Left/Right
Volume)
L/RM
(Left/right mute)
x
HEADPHONE VOLUME (REGISTER 0x04)
This register controls the HP_OUT mute and volume controls. Each volume subregister contains five bits, generating 32 volume steps of
−1.5 dB each for a range of 0 dB to −46.5 dB.
Reg
0x04
Table 75.
Register
L/RV [4:0]
(Left/Right
Volume)
L/RM
(Left/Right Mute)
x
MONO VOLUME (REGISTER 0x06)
This register controls the MONO_OUT mute and volume control. The volume register contains five bits, generating 32 volume steps of
−1.5 dB each for a range of 0 dB to −46.5 dB.
Reg
0x06
Table 76.
Register
V [4:0]
(Volume)
M (Mute)
x
4
Name
Headphones
Volume
Name
Mono Volume
Function
Volume controls the output gain from 0 dB to –46.5 dB. The least significant bit represents –1.5 dB.
M
0
0
0
1
Mutes the output.
Reserved.
Function
Left/right volume controls the left/right channel output gains from 0 dB to –46.5 dB.
The least significant bit represents –1.5 dB.
L/RM
0
0
0
1
Mutes the left/right channels independently.
Reserved.
Function
Left/right volume controls the left/right channel output gains from 0 dB to –46.5 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
M
D14
x
D14
x
V [4:0]
0 0000
0 1111
1 1111
x xxxx
D13
x
L/RV [4:0]
0 0000
0 1111
1 1111
x xxxx
L/RV [4:0]
0 0000
0 1111
1 1111
x xxxx
D13
x
D12
LV4
D12
x
D11
LV3
D11
x
Function
0 dB
−22.5 dB attenuation
−46.5 dB attenuation
Muted
D10
LV2
Rev. 0 | Page 22 of 56
D10
x
Function
0 dB
−22.5 dB attenuation
−46.5 dB attenuation
Muted
Function
0 dB
−22.5 dB attenuation
−46.5 dB attenuation
Muted
D9
LV1
D9
x
D8
LV0
D8
x
D7
RM
D7
x
D6
x
D6
x
D5
x
D5
x
D4
RV4
D4
V4
D3
RV3
D3
V3
D2
RV2
D2
V2
Default
Default
Default: muted (0x1)
Default: 0
Default
Default
Default: muted (0x1)
Default: 0
Default
Default
Default: muted (0x1)
Default: 0
RV1
D1
D1
V1
RV0
D0
D0
V0
Default
0x8000
Default
0x8080