CS4297A
CS4297A
4.3
Alternate Volume Register (Index 04h)
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Mute
0
ML5
ML4
ML3
ML2
ML1
ML0
0
0
MR5 MR4 MR3 MR2 MR1 MR0
Mute
Alternate Mute. Setting this bit mutes the ALT_LINE_OUT_L/R output signals.
ML[4:0]
Alternate Volume Left. These bits control the left alternate output volume. Each step corre-
sponds to 1.5 dB gain adjustment, with 00000 = 0 dB. The total range is 0 dB to -46.5 dB atten-
uation. See Table 2 for further attenuation levels.
ML5
Alternate Volume Left Max Attenuation. Setting ML5 sets the left channel attenuation to
-46.5 dB by forcing ML[4:0] to a ‘1’ state. ML[5:0] will read back 011111 when ML5 has been
‘set’. Table 2 summarizes this behavior.
MR[4:0]
MR5
Alternate Volume Right. These bits control the right alternate output volume. Each step corre-
sponds to 1.5 dB gain adjustment, with 00000 = 0 dB. The total range is 0 dB to -46.5 dB atten-
uation. See Table 2 for further attenuation levels.
Alternate Volume Right Max Attenuation. Setting MR5 sets the right channel attenuation to
-46.5 dB by forcing MR[4:0] to a ‘1’ state. MR[5:0] will read back 011111 when MR5 has been
‘set’. Table 2 summarizes this behavior.
Default
8000h. This value corresponds to 0 dB attenuation and Mute ‘set’.
Mx[5:0]
Write
Mx[5:0]
Read
Gain
Level
000000
000001
…
000000
000001
…
0 dB
-1.5 dB
...
011111
100000
...
011111
011111
...
-46.5 dB
-46.5 dB
...
111111
011111
-46.5 dB
Table 2. Analog Mixer Output Attenuation
4.4
Mono Volume Register (Index 06h)
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Mute
0
0
0
0
0
0
0
0
0
MM5 MM4 MM3 MM2 MM1 MM0
Mute
Mono Mute. Setting this bit mutes the MONO_OUT signal.
MM[5:0]
Mono Volume. These bits control the mono output volume. Each step corresponds to 1.5 dB
gain adjustment, with a total available range from 0 dB to -46.5 dB attenuation. See Table 2 for
further attenuation levels.
MM5
Mono Volume Max Attenuation. Setting the MM5 bit sets the mono attenuation to -46.5 dB by
forcing MM[4:0] to a ‘1’ state. MM[5:0] will read back 011111 when MM5 has been ‘set’. Table 2
summarizes this behavior.
Default
8000h. This value corresponds to 0 dB attenuation and Mute ‘set’.
DS318PP6
21
21
CIRRUS [ CIRRUS LOGIC ]
