Audio Codec And Amplifier - Acer Aspire One 722 Service Manual

Audio Codec and Amplifier

Item
Audio Controller
Features
Hardware Specifications and Configurations
Conexant, CX20584-21Z QFN
24-bit, 2 pairs of independent DACs and 3 pairs of

independent ADCs
ProCoustic headphone driver delivers 50 mW into 32

with no pop, eliminating the need for an external amplifier
and DC-blocking capacitors
Integrated 5 V to 3.3 V low-dropout voltage regulator for

improved audio performance, eliminating need for external
regulator or power transistor.
Integrated 3.3 V to 1.8 V low-dropout voltage regulator, used

to power digital blocks
Integrated 2 WRMS (per channel) class-D stereo speaker

amplifier with Spread Spectrum and 10-kV ESD withstand
capability
Digital Microphone interface with internal MIC boost

supporting 2 digital microphone elements - Works with all
digital microphones.
Internal microphone boost, Digital: 0, 12, 24, 36, 48 dB,

Analog: 0, 10, 20, 30, 40 dB
Microphone Security Control - Please contact Conexant

Sales/FAE for additional confidential document to disable the
bit in microphone from the BIOS.
Exceeds Windows Vista and Windows 7 Desktop and

Notebook Premium Logo Requirements, WLP4.0
D-Flex power management exceeds Intel ECR 15B

requirements, and features Wake-On-PCBeep functionality
Hardware Headphone limiter bit (supports GS Mark

EN50332-2)
Compliant with Intel High Definition Audio Specification Rev.

1.0
Supports both 1.5 V and 3.3 V signaling with the core logic

chipset
Retaskable ports - Configure between Headphone and

Line-out or between Mic and Line-in
Independent sampling rate for DAC and ADC; supports audio

formats ranging from 16-bit, 44.1 kHz to 24-bit, 192 kHz for
DACs, and from 16-bit, 44.1 kHz to 24-bit, 96 kHz for ADCs.
Pop Shield: pops and clicks reduction circuitry, including

class-D speaker outputs
Jack sense detects up to 8 jacks using only two sense pins

Dual Sony Philips Digital Interface (S/PDIF) outputs

Digital Mixer

Simultaneous DAC and SPDIF engines

3.3 V analog and I/O operation; uses Vaux for power

management modes
Specification
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