cs4237b Cirrus Logic, Inc., cs4237b Datasheet - Page 100

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

RAUX1 - Right Auxiliary #1 Input
LAUX2 - Left Auxiliary #2 Input
RAUX2 - Right Auxiliary #2 Input
CMAUX2 - Common Mode Auxiliary #2 Input
MIN - Mono Input
Analog Outputs
LOUT - Left Line Level Output
ROUT - Right Line Level Output
MOUT - Mono Output
100
Nominally 1 V
programmable gain block provides volume control and is located in I3. Typically used for an
external Right line-level input.
Nominally 1 V
programmable gain block provides volume control and is located in I4. Typically used for the
Left channel CDROM input.
Nominally 1 V
programmable gain block provides volume control and is located in I5. Typically used for the
Right channel CDROM input.
Common mode ground input for the LAUX2 and RAUX2 inputs. Typically connected to the
CDROM ground input to provide common-mode noise rejection. The impedance on this pin
should be one half the impedance on the LAUX2 and RAUX2 inputs.
Nominally 1 V
programmable gain stage (I26) into both channels of the output mixer. This is a general purpose
mono analog input that is normally used to mix the typical "beeper" signal on most computers
into the audio system.
Analog output from the mixer for the left channel. Nominally 1 V
VREF. This pin needs a 1000 pF NPO capacitor attached and tied to analog ground.
Analog output from the mixer for the Right channel. Nominally 1 V
VREF. This pin needs a 1000 pF NPO capacitor attached and tied to analog ground.
MOUT is nominally 1 V
summed analog output from both the left and right output channels of the mixer. MOUT
typically is connected to a speaker driver that drives the internal speaker in most computers. In
MODE2, MOM in I26 mutes both channels going into MOUT. In MODE 3, MOM in I26
mutes the left channel and MOMR in X5 mutes the right channel.
RMS
RMS
RMS
RMS
max analog input for the Right AUX2 channel, centered around VREF. A
max analog input for the Right AUX1 channel, centered around VREF. A
max analog input for the Left AUX2 channel, centered around VREF. A
max analog input, centered around VREF, that goes through a
RMS
max analog output, centered around VREF. This output is a
RMS
RMS
max centered around
max centered around
CS4237B
DS213PP4