Driver Setup
4-7
Realtek ALC201A Audio Driver
The ALC201A 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. ALC201A AC'97 CODEC incorporates proprietary con-
verter technology to achieve high SNR greater than 90 dB. In addition, it sup-
ports multiple CODEC extension with independent variable sampling rate and
built-in 3D effects. It also provides two pairs of stereo outputs with independ-
ent volume controls, a mono output, and multiple stereo and mono inputs,
along with flexible mixing, gain and mute functions to provide a completely
integrated audio solution for PCs.
Features
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AC'97 2.2 Compatible & WHQL Compliant
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High Performance Converter Technology
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18-bit Stereo Full-Duplex CODEC with Independent Variable Sampling
Rate
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Four Analog Line-Level Stereo Inputs for Connection from LINE, CD,
VIDEO and AUX
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Two Analog Line-Level Stereo Inputs for Speakerphone and PC BEEP
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Two MIC Inputs w/ Software Selectable
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High Quality Differential CD Input
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True Stereo Line Level Outputs
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EAPD (External Amplifier Power Down) Control
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3D Stereo Enhancement
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Multi-CODEC Extension
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SNR Greater Than 95 dB
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Line Output with 50mW/20ohm Driving Capability
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Headphone Jack-Detection to Mute LINE Output
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MC'97 Chain-In Allows for Multi-Channel Application
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Supports SPDIF-Out, Fully Compliant to AC'97 Specification Rev. 2.2
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Power Management Support
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Power Supply (Digital 3.3V/ Analog 5V)
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Meets Microsoft PC99 & WLP 2.0 Audio Requirements
48-Pin LQFP Package