ALC1308-CG

1. Features

Single chip audio CODEC with high S/N ratio

Compliant with AC'97 2.2 specification

16-bit stereo full-duplex CODEC with fixed 48KHz sampling rate

3 analog line-level stereo inputs with 5-bit volume control:LINE-IN,CD-IN,AUX-IN

1 analog line-level mono input:PHONE-IN

1 MIC input

Power management

3D Stereo Enhancement

LINE output with 50mW/200 headphone driver

External Amplifier power down capability

Power supply:Digital:3.3V Analog:5V/3.3V

Clocking by external 14.318MHz or 24.576MHz source to save crystal

Standard 48-pin LQFP Package and 20-pin SOP

2. General Description

The ALC101 is an 18-bit, full duplex AC'97 2.2 compatible stereo audio CODEC designed for PC multimedia systems,

including host/soft audio and AMR/CNR based designs. The ALC101 AC'97 CODEC supports multiple CODEC extensions

with independent variable sampling rates and built-in 3D effects. The ALC101 CODEC provides a pair of stereo outputs with

independent volume controls and multiple stereo and mono inputs, along with flexible mixing, gain and mute functions to

provide a complete integrated audio solution for PCs. The digital interface circuitry of the ALC101 CODEC operates from a

5V/3.3V power supply with EAPD (External Amplifier Power Down) control for use in notebook and PC applications. The

ALC101 integrates a 50mW/20ohm headset audio amplifier into the CODEC, saving BOM costs. The ALC101 CODEC

supports host/soft audio from Intel 810/815/820/845 chipsets as well as audio controller based VIA/SIS/ALI chipsets. Bundled

Windows series drivers (Win95/98/ME/2000/XP/NT) and sound effect utilities (supporting Karaoke, 26-kind of environment

sound emulation, 5-band equalizer) provide an excellent entertainment package for PC users. Finally, internal PLL circuits

generate required timing signals, eliminating the need for external clocking devices. 

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