CS4294 Datasheet, PDF (18/42 Pages) Cirrus Logic – SoundFusion Audio/Docking Codec 97 (AMC 97)

CS4294
6.1 Register Descriptions
6.1.1 Reset (Index 00h)
Mode 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
0 ID4 0
0
0
0
1
SE4 SE3 SE2 SE1 SE0 0 ID8 ID7 0
0
0
0
0
0
0
SE[4:0]
ID8 set
ID7 set
ID4 set
Enhanced Stereo Technique.
00110 - Crystal 3D Stereo Enhancement.
18-bit ADC resolution.
20-bit DAC resolution.
Headphone out support. (Alternate Line Output)
Read-only data
Mode 0
Mode 1
1990h
1980h
Any write to this register causes the audio control registers (Index 02h - 38h) and the Crystal specific
registers (Index 5Eh - 68h) to be reset forcing them to their default state. The mode control bits
MD[1:0] of the AC Mode Control (Index 5Eh) register are also cleared forcing the Codec to Mode 0
configuration. Reads return configuration information about the audio Codec
6.1.2 Master Volume (Index 02h)
D15 D14 D13 D12 D11 D10 D9
D8
D7
Mute
ML5 ML4 ML3 ML2 ML1 ML0
D6
D5
D4
D3
D2
D1
D0
MR5 MR4 MR3 MR2 MR1 MR0
Mute
ML[5:0]
MR[5:0]
Default
Master mute for the LINE_OUT_L and the LINE_OUT_R output signals.
Master Volume control for LINE_OUT_L pin. Least significant bit represents -1.5 dB with 00000 = 0 dB.
The total range is 0 dB to -94.5 dB.
Master Volume control for LINE_OUT_R pin. Least significant bit represents -1.5 dB with 00000 = 0 dB.
The total range is 0 dB to -94.5 dB.
8000h, corresponding to 0 dB attenuation and mute on.
In Mode 1 the LINE_OUT volume is controlled by the Left Right Surround (Index 38h) register in place
of Master Volume.
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DS326PP4