General Description

The CS4271 is a high-performance, integrated audio CODEC. The CS4271 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.

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

– 108 dB Dynamic Range

– -98 dB THD+N

● Up to 192 kHz Sampling Rates

● Single-Ended 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

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