34 automute, line & hp mux (address 27h), 1 auto mute, 2 line input select – Cirrus Logic CS42L56 User Manual
Page 82: 3 headphone input select, 1 headphone channel x mute, P 83, Hpxmute, Cs42l56
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DS851F2
CS42L56
6.34 Automute, Line & HP MUX (Address 27h)
6.34.1 Auto Mute
Configures the state of the auto mute feature. When enabled, the analog outputs will mute after 4096 con-
secutive zeros or ones from SDIN.
6.34.2 Line Input Select
Selects the specified analog input signal into line amplifier x.
Note:
The PGA path must not be selected while the Line Amplifier is powered down.
6.34.3 Headphone Input Select
Selects the specified analog input signal into headphone amplifier x.
Note:
The PGA path must not be selected while the Headphone Amplifier is powered down.
6.35 Headphone Volume Control: HPA (Address 28h) & HPB (Address 29h)
6.35.1 Headphone Channel x Mute
Configures an analog mute on the headphone amplifier.
7
6
5
4
3
2
1
0
AMUTE
Reserved
Reserved
Reserved
LINEBMUX
LINEAMUX
HPBMUX
HPAMUX
AMUTE
Auto Mute Configuration
0
Auto Mute Disabled
1
Auto Mute Enabled. The analog outputs will mute after 4096 consecutive words of all zeros or ones from
SDIN.
LINExMUX
Selected Input to Line Amplifier Ch. x
0
DACx
1
PGAx - Use PGAxMUX bit (
“PGA x Input Select” on page 77
) to select an input channel.
HPxMUX
Selected Input to HP Amplifier Ch. x
0
DACx
1
PGAx - Use PGAxMUX bit (
“PGA x Input Select” on page 77
) to select an input channel.
7
6
5
4
3
2
1
0
HPxMUTE
HPxVOL6
HPxVOL5
HPxVOL4
HPxVOL3
HPxVOL2
HPxVOL1
HPxVOL0
HPxMUTE
HP Amp Mute
0
Disabled
1
Enabled