Description
The CS4205 is an AC ’97 2.1 compliant stereo audio codec designed for PC multimedia systems. It uses industry leading CrystalClear® delta-sigma and mixed signal technology. The CS405 is the first Cirrus AC ’97 audio codec to feature digital centric mixing and digital effects. This advanced technology and these features are designed to help enable the design of PC 99 and PC 2001 compliant high-quality audio systems for desktop, portable, and entertainment PCs.

Features
● Integrated Asynchronous I2S Input Port
   (ZV Port)
● Integrated High-Performance Microphone
   Pre-Amplifier
● Integrated Digital Effects Processing for Bass
   and Treble Response
● Digital Docking Including an I2S Output, 3
   Synchronous I2S Inputs
● Performance Oriented Digital Mixer
● SRS 3D Stereo Enhancement
● On-chip PLL for use with External Clock
   Sources
● Dedicated Microphone Analog-to-Digital
   Converter
● Sample Rate Converters
● S/PDIF Digital Audio Output
● AC ’97 2.1 Compliant
● PC Beep Bypass
● 20-bit Stereo Digital-to-Analog Converters
● 18-bit Stereo Analog-to-Digital Converters
● Three Analog Line-level Stereo Inputs for
   LINE IN, VIDEO, and AUX
● High Quality Pseudo-Differential CD Input
● Extensive Power Management Support
● Meets or Exceeds the Microsoft® PC 99 and
   PC 2001 Audio Performance Requirements