alc272 Realtek Semiconductor Corporation, alc272 Datasheet - Page 9

• Manufacturer Part Number: alc272
• Description: 4 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

ALC272
Datasheet
1.
General Description
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.
4 Channel High Definition Audio Codec
1
Track ID: JATR-1076-21
Rev. 1.0