CS4205
5.1
Reset Register (Index 00h)
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
SE4
SE3
SE2
SE1
SE0
0
ID8
ID7
0
ID5
0
ID3
ID2
0
ID0
SE[4:0]
ID8
SRS 3D Stereo Enhancement. SE[4:0] = 01001, indicating this feature is present.
18-bit ADC Resolution. The ID8 bit is ‘set’, indicating this feature is present.
20-bit DAC resolution. The ID7 bit is ‘set’, indicating this feature is present.
Loudness. The ID5 bit is ‘set’, indicating this feature is present.
ID7
ID5
ID3
Simulated Stereo. The ID3 bit is ‘set’, indicating this feature is present.
Bass & Treble. The ID2 bit is ‘set’, indicating this feature is present.
Dedicated Mic PCM in Channel. The ID0 bit is ‘set’, indicating this feature is present.
25ADh. The data in this register is read-only data.
ID2
ID0
Default
Any write to this register causes a Register Reset of the audio control (Index 00h - 3Ah) and Cirrus Logic defined
(Index 5Ah - 7Ah) registers. A read from this register returns configuration information about the CS4205.
5.2
Master Volume Register (Index 02h)
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
Master Mute. Setting this bit mutes the LINE_OUT_L/R output signals.
ML[5:0]
Master Volume Left. These bits control the left master output volume. Each step corresponds
to 1.5 dB gain adjustment, with a total available range from 0 dB to -46.5 dB attenuation. Set-
ting the ML5 bit 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’. See Table 4 for further details.
MR[5:0]
Default
Master Volume Right. These bits control the right master output volume. Each step corre-
sponds to 1.5 dB gain adjustment, with a total available range from 0 dB to -46.5 dB attenu-
ation. Setting the MR5 bit 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’. See Table 4 for further
details.
8000h. This value corresponds to 0 dB attenuation and Mute ‘set’.
Mx5 - Mx0 Mx5 - Mx0
Gain
Write
000000
000001
…
Read
000000
000001
…
Level
0 dB
-1.5 dB
...
011111
100000
...
011111
011111
...
-46.5 dB
-46.5 dB
...
111111
011111
-46.5 dB
Table 4. Analog Mixer Output Attenuation
DS489PP4
27
CIRRUS [ CIRRUS LOGIC ]
