CS4205-KQ Cirrus Logic Inc, CS4205-KQ Datasheet - Page 71

• Manufacturer Part Number: CS4205-KQ
• Description: Audio CODECs IC AC'97 Codec for Docking Stations
• Manufacturer: Cirrus Logic Inc

Specifications of CS4205-KQ

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Audio I/O Pins
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
DS489PP4
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 to the CS4205, the PC_BEEP bypass path to the LINE_OUT
outputs is enabled. While the CS4205 is in normal operation mode with RESET# de-asserted,
PC_BEEP is a monophonic source to the analog output mixer. 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 output mixer. It is intended to be used as a modem
subsystem input to the audio subsystem. The maximum allowable input is 1 V
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 CS4205 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 CS4205 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 CS4205. 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
AC-coupled to analog ground.
These inputs form a stereo input pair to the CS4205. 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 AC-coupled 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
RMS
(sinusoidal). These
(sinusoidal). This
CS4205
RMS
RMS
RMS
RMS
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