CS4299-BQZR Cirrus Logic Inc, CS4299-BQZR Datasheet - Page 43

• Manufacturer Part Number: CS4299-BQZR
• Description: IC AC97 Codec With SRC
• Manufacturer: Cirrus Logic Inc

DS319-BQPP2
Audio I/O
PC_BEEP - Analog Mono Source, Input, Pin 12
PHONE - Analog Mono Source, Input, Pin 13
MIC1 - Analog Mono Source, Input, Pin 21
MIC2 - Analog Mono Source, Input, Pin 22
LINE_IN_L, LINE_IN_R - Analog Line Source, Inputs, Pins 23 and 24
CD_L, CD_R - Analog CD Source, Inputs, Pins 18 and 20
CD_GND - Analog CD Common Source, Input, Pin 19
The PC_BEEP input is intended to allow the PC system POST (Power On Self-Test) tones to pass
through to the audio subsystem. The PC_BEEP input has two connections: the first connection is to the
analog output mixer, the second connection is directly to the LINE_OUT stereo outputs. While the
RESET# pin is actively being asserted and the BCFG pin is left floating, the PC_BEEP bypass path to
the LINE_OUT outputs is enabled. While the CS4299-BQ is in normal operation mode, with RESET#
deasserted or BCFG grounded, PC_BEEP is a monophonic source to the analog output mixer. The
maximum allowable input is 1 V
reference and requires AC-coupling to external circuitry. If this input is not used, it should be connected
to the Vrefout pin or AC-coupled to analog ground.
This analog input is a monophonic source to the analog output mixer. It is intended to be used as a
modem subsystem input to the audio subsystem. The maximum allowable input is 1 V
This input is internally biased at the Vrefout voltage reference and requires AC-coupling to external
circuitry. If this input is not used, it should be connected to the Vrefout pin or AC-coupled to analog
ground.
This analog input is a monophonic source to the analog output mixer. It is intended to be used as a
desktop microphone connection to the audio subsystem. The CS4299-BQ internal mixer's microphone
input is MUX selectable with either MIC1 or MIC2 as the input. The maximum allowable input is 1 V
(sinusoidal). This input is internally biased at the Vrefout voltage reference and requires AC-coupling to
external circuitry. If this input is not used, it should be connected to the Vrefout pin or AC-coupled to
analog ground.
This analog input is a monophonic source to the analog output mixer. It is intended to be used as an
alternate microphone connection to the audio subsystem. The CS4299-BQ internal mixer's microphone
input is MUX selectable with either MIC1 or MIC2 as the input. The maximum allowable input is 1 V
(sinusoidal). This input is internally biased at the Vrefout voltage reference and requires AC-coupling to
external circuitry. If this input is not used, it should be connected to the Vrefout pin or AC-coupled to
analog ground.
These inputs form a stereo input pair to the CS4299-BQ. The maximum allowable input is 1 V
(sinusoidal). These inputs are internally biased at the Vrefout voltage reference and require AC-coupling
to external circuitry. If these inputs are not used, they should both be connected to the Vrefout pin or
both AC-coupled, with separate AC-coupling caps, to analog ground.
These inputs form a stereo input pair to the CS4299-BQ. It is intended to be used for the Red Book CD
audio connection to the audio subsystem. The maximum allowable input is 1 V
inputs are internally biased at the Vrefout voltage reference and require AC-coupling to external
circuitry. If these inputs are not used, they should both be connected to the Vrefout pin or both
AC-coupled, with separate AC-coupling caps, to analog ground.
This analog input is used to remove common mode noise from Red Book CD audio signals. The
impedance on the input signal path should be one half the impedance on the CD_L and CD_R input
paths. This pin requires AC-coupling to external circuitry. If this input is not used, it should be connected
to the Vrefout pin or AC-coupled to analog ground.
RMS
(sinusoidal). This input is internally biased at the Vrefout voltage
RMS
CS4299-BQ
(sinusoidal). These
CS4299-BQ
RMS
(sinusoidal).
RMS
RMS
RMS
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