cs4297 Cirrus Logic, Inc., cs4297 Datasheet - Page 42

• Manufacturer Part Number: cs4297
• Description: Crystalclear Soundfusion Audio Codec 97 Logic
• Manufacturer: Cirrus Logic, Inc.

LINE_OUT_L and LINE_OUT_R - Analog Line Level Outputs
ALT_LINE_OUT_L and ALT_LINE_OUT_R - Analog Alternate Line Level Outputs
MONO_OUT, Analog Mono Line Level Output
Filter and Reference Pins
REFFLT - Internal Reference Voltage, Input
Vrefout - Voltage Reference, Output
AFLT1 - Left Channel Antialiasing Filter Input
AFLT2 - Right Channel Antialiasing Filter Input
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These signals are analog outputs from the stereo output mixer. The full scale output voltage for
output is nominally 1 V
required to either AC couple these pins to external circuitry or DC couple them to a buffer op-
amp biased at the Vrefout voltage. These pins need a 680 pF NPO capacitor attached to analog
ground.
These signals are analog outputs from the stereo output mixer. The full scale output voltage for
each output is nominally 1 V
required to either AC couple these pins to external circuitry or DC couple them to a buffer op-
amp biased at the Vrefout voltage. These pins need a 680 pF NPO capacitor attached to analog
ground.
This signal is an analog output from the Mono output mixer. This is a left and right channel
mix of the output of the stereo input mixer. The full scale output is nominally 1 V
internally biased at the Vrefout voltage reference. AC coupling to external circuitry is required.
This pin needs a 680 pF NPO capacitor attached to analog ground.
This is the voltage reference used internal to the part. A 0.1 F and a 1 F (must not be larger
than 1
connections should be made to this pin.
All analog inputs and outputs are centered around Vrefout which is nominally 2.2 Volts. This
pin may be used to level shift external circuitry, however any external loading should be
buffered.
This pin needs a 390 pF NPO capacitor attached to analog ground.
This pin needs a 390 pF NPO capacitor attached to analog ground.
F) capacitor with short, wide traces must be connected to this pin. No other
RMS
RMS
and is internally biased at the Vrefout voltage reference. It is
and is internally biased at the Vrefout voltage reference. It is
CrystalClear™ SoundFusion™ Audio Codec ’97
RMS
CS4297
DS242F5
and is