Audio CODEC '97 for Portable Computing

The CS4205 is an AC '97 2.1 compliant, stereo, audio CODEC designed for PC multimedia systems. It uses industry leading Delta-Sigma and mixed-signal technology. The CS4205 is the first Cirrus 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
• Performance digital mixer with SRS® 3D stereo enhancement
• On-chip PLL for use with external clock sources
• Dedicated microphone analog-to-digital converter
• S/PDIF digital audio output
• PC beep bypass
• 20-bit stereo DAC; 18-bit stereo ADC with sample rate converters
• Analog, line-level, stereo inputs: LINE IN, VIDEO, & AUX
• High-quality, pseudo-differential CD input
• Extensive power management support
• Package: 48-pin TQFP