CS4205 Audio Codec ‘97 for Portable Computing

The CS4205 is the first Cirrus Logic AC '97 audio codec to feature digital-centric mixing and digital effects. These features and advanced technology are designed to help enable the design of PC 99- and PC 2001-compliant, high-quality audio systems for desktop, portable and entertainment PCs.

Coupling the CS4205 with a PCI audio accelerator or core logic supporting the AC '97 interface implements a cost-effective, superior-quality audio solution. The CS4205 surpasses PC 99, PC 2001 and AC '97 2.1 audio quality standards. Windows® XP and 2000 drivers are available.

• AC '97 2.1-compliant
• Meets or exceeds the Microsoft® PC 99 and PC 2001 audio performance requirements
• Integrated asynchronous I²S input port (ZV port)
• Integrated high-performance microphone pre-amplifier
• Integrated digital effects processing for bass and treble
• Digital docking of I²S output, 3 synchronous I²S inputs
• High-performance digital mixer with SRS 3D stereo enhancement
• On-chip PLL for use with external clock sources
• Dedicated microphone A/D converter
• S/PDIF digital audio output
• PC beep bypass
• 20-bit stereo D/A converter; 18-bit stereo A/D converter with sample-rate converters
• Analog, line-level stereo inputs: LINE_IN, VIDEO and AUX
• High-quality, pseudo-differential CD input
• Extensive power-management support
• Package: 48-pin TQFP; lead-free assembly