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CS4237B Datasheet(PDF) 37 Page - Cirrus Logic

Part # CS4237B
Description  CrystalClear Advanced Audio System with 3D Sound
Download  114 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS4237B Datasheet(HTML) 37 Page - Cirrus Logic

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Left Auxiliary #2 Volume (I4)
Default = 11x01000
D7
D6
D5
D4
D3
D2
D1
D0
LX2OM LX2IM res
LX2G4
LX2G3 LX2G2
LX2G1 LX2G0
LX2G4-LX2G0 Left Auxiliary #2, LAUX2, Mix Gain.
The least significant bit represents
1.5 dB, with 01000 = 0 dB.
See Table 10.
res
Reserved. Must write 0.
LX2IM
Left Auxiliary #2 Mute. In MODE 3,
when set to 1, the left Auxiliary #2 in-
put, LAUX2, to the input mixer
through the gain stage, is muted.
In MODEs 1 & 2, this bit is not avail-
able and internally forced on (muted).
LX2OM
Left Auxiliary #2 Mute. When set to 1,
the left Auxiliary #2 input, LAUX2, to
the output mixer through the gain
stage, is muted.
Right Auxiliary #2 Volume (I5)
Default = 11x01000
D7
D6
D5
D4
D3
D2
D1
D0
RX2OM RX2IM res RX2G4 RX2G3 RX2G2 RX2G1 RX2G0
RX2G4-RX2G0 Right Auxiliary #2, RAUX2, Mix Gain.
The least significant bit represents
1.5 dB, with 01000 = 0 dB.
See Table 10.
res
Reserved. Must write 0. Could read
as 0 or 1.
RX2IM
Right Auxiliary #2 Mute. In MODE 3,
when set, the right Auxiliary #2 in-
put, RAUX2, to the input mixer
through the gain stage, is muted.
In MODEs 1 & 2, this bit is not avail-
able and internally forced on (muted).
RX2OM
Right Auxiliary #2 Mute. When set to
1, the right Auxiliary #2 input,
RAUX2, to the output mixer through
the gain stage, is muted.
Left DAC (PC Wave) Volume (I6)
Default = 10000000
D7
D6
D5
D4
D3
D2
D1
D0
LDOM LDG6
LDG5
LDG4
LDG3
LDG2
LDG1
LDG0
LPM
res
LPA5
LPA4
LPA3
LPA2
LPA1
LPA0
If both IFM (X4 or Global Config. byte) and WTEN
(C8 or Global Config. byte) are cleared, this register
is the master digital audio volume for the left channel
with the following bit definitions:
LDG6-LDG0
Left DAC Master Volume. The least
significant bit represents 1.5 dB, with
0000000 = 0 dB. The total range is
+12 to -94.5 dB. See Table 12.
LDOM
Left DAC Master Mute. When set, the
left DAC to the output mixer is
muted.
If IFM or WTEN is set, this register controls the left
channel volume for data coming from the ISA bus
only (and X14 is the left channel digital audio master
volume) with the following bit descriptions.
LPA5-LPA0
Left PC Wave Attenuation. The least
significant bit represents -1.5 dB,
with 000000 = 0 dB. The total range
is 0 to -94.5 dB. See Table 6.
res
Reserved. Must write 0. Could read
as 0 or 1.
LPM
Left PC Wave Mute. When set, the
left PCM input to the digital mixer
summer will be muted.
LX2G4-G0
LAUX2
(Line In)
LX2IM
LX2OM
To Output
Mixer
To Input
Mixer
+12 to -34.5 dB
RX2G4-G0
RAUX2
(Line In)
RX2IM
RX2OM
To Output
Mixer
To Input
Mixer
+12 to -34.5 dB
DS213PP4
CS4237B
37


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