CS4201 Datasheet, PDF (28/68 Pages) Cirrus Logic – CrystalClear Audio Codec 97 with headphone Amplifier

CS4201
4.10 General Purpose Register (Index 20h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
POP 0
3D
0
0
0 MIX MS LPBK 0
0
0
0
0
0
0
POP
3D
PCM Out Path. When ‘clear’, the PCM out path is mixed pre 3D. When ‘set’, the PCM out path
is mixed post 3D.
3D Enable. When ‘set’, the 3D bit enables the CrystalClear^ 3D stereo enhancement. This
function is not available in DAC Direct Mode (DDM).
MIX
Mono Output Path. This bit controls the source of the mono output driver. When ‘clear’, the
output of the stereo-to-mono mixer is sent to the mono output. When ‘set’, the output of the
microphone boost stage is sent to the mono output. The source of the microphone boost
stage is controlled by the MS bit in the General Purpose Register (Index 20h).
MS
Microphone Select. The MS bit determines which of the two Mic inputs are passed to the mix-
er. When ‘set’, the MIC2 input is selected. When ‘clear’, the MIC1 input is selected.
LPBK
Loopback Enable. When ‘set’, the LPBK bit enables the ADC/DAC Loopback Mode. This bit
routes the output of the ADCs to the input of the DACs without involving the AC-link.
Default
0000h
4.11 3D Control Register (Index 22h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
0
0
0
0
0
0
0
0
0
S3 S2 S1 S0
S[3:0]
Default
Spatial Enhancement Depth Control. The S[3:0] spatial enhancement bits are enabled by the
3D bit in the General Purpose Register (Index 20h). When S[3:0] = 0000, minimum spatial
enhancement is added. When S[3:0] = 1111, maximum spatial enhancement is added.
0000h. This value corresponds to minimum spatial enhancement.
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DS483PP3