General Description
The CS4272 is a high-performance, integrated audio CODEC. The CS4272 performs stereo analog-to-digital (A/D) and digital-to-analog (D/A) conversion of up to 24-bit serial values at sample rates up to 192 kHz.
The D/A offers a volume control that operates with a 1 dB step size. It incorporates selectable soft ramp and zero crossing transition functions to eliminate clicks and pops.
The D/A’s integrated digital mixing functions allow a variety of output configurations ranging from a channel swap to a stereo-to-mono downmix.
Standard 50/15 µs de-emphasis is available for sampling rates of 32, 44.1, and 48 kHz for compatibility with digital audio programs mastered using the 50/15 µs pre-emphasis technique.

D/A Features
• High Performance
   – 114 dB Dynamic Range
   – -100 dB THD+N
• Up to 192 kHz Sampling Rates
• Differential Analog Architecture
• Volume Control with Soft Ramp
   – 1 dB Step Size
   – Zero Crossing Click-free Transitions
• Selectable Digital Filters
   – Fast and Slow Roll Off
• ATAPI Mixing Functions
• Selectable Serial Audio Interface Formats
   – Left Justified up to 24-bit
   – I2S up to 24-bit
   – Right Justified 16-, 18-, 20-, and 24-Bit
• Control Output for External Muting
• Selectable 50/15 µs De-emphasis

A/D Features
• High Performance
   – 114 dB Dynamic Range
   – -100 dB THD+N
• Up to 192 kHz Sampling Rates
• Differential Analog Architecture
• Multi-bit Delta Sigma Conversion
• High-pass Filter or DC Offset Calibration
• Low-Latency Digital Anti-alias Filtering
• Automatic Dithering of 16-bit Data
• Selectable Serial Audio Interface Formats
   – Left Justified up to 24-bit
   – I2S up to 24-bit
  
System Features
• Direct Interface with 5V to 2.5V Logic Levels
• Internal Digital Loopback
• On-chip Oscillator
• Stand-Alone or Control Port Functionality