CS4205 Datasheet, PDF (27/80 Pages) Cirrus Logic – CrystalClear Audio Codec 97 with Portable Computing

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]
SRS 3D Stereo Enhancement. SE[4:0] = 01001, indicating this feature is present.
ID8
18-bit ADC Resolution. The ID8 bit is ‘set’, indicating this feature is present.
ID7
20-bit DAC resolution. The ID7 bit is ‘set’, indicating this feature is present.
ID5
Loudness. The ID5 bit is ‘set’, indicating this feature is present.
ID3
Simulated Stereo. The ID3 bit is ‘set’, indicating this feature is present.
ID2
Bass & Treble. The ID2 bit is ‘set’, indicating this feature is present.
ID0
Dedicated Mic PCM in Channel. The ID0 bit is ‘set’, indicating this feature is present.
Default
Table 12 on page 37h. The data in this register is read-only data.
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
Mute 0 ML5 ML4 ML3 ML2 ML1 ML0 0
D6 D5 D4 D3 D2 D1 D0
0 MR5 MR4 MR3 MR2 MR1 MR0
Mute
ML[5:0]
MR[5:0]
Default
Master Mute. Setting this bit mutes the LINE_OUT_L/R output signals.
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.
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
Write
000000
000001
…
011111
100000
...
111111
Mx5..Mx0
Read
000000
000001
…
011111
011111
...
011111
Gain
Level
0 dB
-1.5 dB
...
-46.5 dB
-46.5 dB
...
-46.5 dB
Table 4. Analog Mixer Output Attenuation
DS489PP2
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