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ENGLISH DATASHEETS for Realtek ALC272
Realtek ALC272 (sound chip)
Release: 1.0 from 2008-05-21
File: alc272_datasheet_1.0.pdf
Downloaded: 5230×
Designed only for Realtek ALC272-GR
The ALC272 is a High Definition Audio Codec that meets the current WLP3.10 (Windows Logo Program) audio requirements for Windows Vista systems.

Featuring two stereo DACs, two stereo ADCs, legacy analog input to analog output mixing, one stereo digital microphone converter, and two independent SPDIF output converters, the ALC272 provides a fully integrated audio solution for multimedia desktop and mobile PCs, and ultra mobile devices.

The ALC272 integrates two stereo ADCs and two stereo digital microphone converters to support simultaneous analog microphone recording and up to 4 channel digital microphone array recording, and features Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) for voice applications.

Multiple analog IO (except MONO, PCBEEP, and HP-OUT) are input and output capable, and provide headphone amplifiers. Four linear headphone amplifiers are integrated to drive earphones on port-A, port-D, port-E and port-F. The fifth headphone amplifier on port-I (HPOUT) is designed to drive an earphone without the need for external DC blocking capacitors, reducing pop noise and enhancing sound quality.

The ALC272 provides two independent SPDIF outputs and supports 16/20/24-bit SPDIF output with a sampling rate of up to 192kHz, offering easy connection of PCs to high quality consumer electronic products such as digital decoders and speakers. In addition to the standard (primary) SPDIF output function, the ALC272 features another independent (secondary) SPDIF-OUT output and converters that transport digital audio output to a High Definition Media Interface (HDMI) transmitter (becoming more common in high-end PCs).

In addition to the audio functions, the ALC272 supports enhanced power management. Its power management design conforms to Intel’s Audio Codec low power state white paper and is ECR compliant, reducing power consumption when the audio function is not being used, and offering jack detection wake-up when the system is in power down state so as to extend battery life for mobile systems without sacrificing audio features.

The ALC272 supports host audio controller from the Intel ICH series chipset, and also from any other HDA compatible audio controller. With software utilities like Karaoke mode, environment emulation, multi-band software equalizer, dynamic range compressor and extender, optional Dolby® Digital Live, DTS® CONNECT™, Dolby® Home Theater, and SRS® programs, the ALC272 provides an excellent home entertainment package and game experience for PC users.


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