cs4237b Cirrus Logic, Inc., cs4237b Datasheet - Page 37

• Manufacturer Part Number: cs4237b
• Description: Crystalclear Advanced Audio System With 3d Sound
• Manufacturer: Cirrus Logic, Inc.

Left Auxiliary #2 Volume (I4)
Default = 11x01000
LX2G4-LX2G0 Left Auxiliary #2, LAUX2, Mix Gain.
res
LX2IM
LX2OM
Right Auxiliary #2 Volume (I5)
Default = 11x01000
RX2G4-RX2G0 Right Auxiliary #2, RAUX2, Mix Gain.
res
RX2IM
DS213PP4
LX2OM LX2IM res LX2G4 LX2G3 LX2G2 LX2G1 LX2G0
RX2OM RX2IM res RX2G4 RX2G3 RX2G2 RX2G1 RX2G0
D7
D7
(Line In)
LAUX2
D6
D6
D5
D5
+12 to -34.5 dB
The least significant bit represents
1.5 dB, with 01000 = 0 dB.
See Table 10.
Reserved. Must write 0.
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).
Left Auxiliary #2 Mute. When set to 1,
the left Auxiliary #2 input, LAUX2, to
the output mixer through the gain
stage, is muted.
The least significant bit represents
1.5 dB, with 01000 = 0 dB.
See Table 10.
Reserved. Must write 0. Could read
as 0 or 1.
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).
LX2G4-G0
D4
D4
D3
D3
LX2OM
LX2IM
D2
D2
D1
To Output
D1
To Input
Mixer
Mixer
D0
D0
RX2OM
Left DAC (PC Wave) Volume (I6)
Default = 10000000
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
LDOM
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
res
LPM
LDOM LDG6
LPM
D7
(Line In)
RAUX2
D6
res
LDG5
LPA5
+12 to -34.5 dB
D5
Right Auxiliary #2 Mute. When set to
1, the right Auxiliary #2 input,
RAUX2, to the output mixer through
the gain stage, is muted.
significant bit represents 1.5 dB, with
0000000 = 0 dB. The total range is
+12 to -94.5 dB. See Table 12.
Left DAC Master Mute. When set, the
left DAC to the output mixer is
muted.
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.
Reserved. Must write 0. Could read
as 0 or 1.
Left PC Wave Mute. When set, the
left PCM input to the digital mixer
summer will be muted.
RX2G4-G0
Left DAC Master Volume. The least
LDG4
LPA4
D4
LDG3
LPA3
D3
RX2OM
RX2IM
LDG2
LPA2
D2
LDG1
LPA1
CS4237B
D1
To Output
To Input
Mixer
Mixer
LDG0
LPA0
D0
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