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See Product Specifications for product details.
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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