GENERAL DESCRIPTION
The CS42L51 is a highly integrated, 24-bit, 96 kHz, low power stereo CODEC. Based on multi-bit, delta-sigma modulation, it allows infinite sample rate adjustment between 4 kHz and 96 kHz. Both the ADC and DAC offer many features suitable for low power, portable system applications.

SYSTEM FEATURES
♦ 24-bit Converters
♦ 4 kHz to 96 kHz Sample Rate
♦ Multi-bit Delta Sigma Architecture
♦ Low Power Operation
    – Stereo Playback: 12.93 mW @ 1.8 V
    – Stereo Record and Playback: 20.18 mW @ 1.8 V
♦ Variable Power Supplies
    – 1.8 V to 2.5 V Digital & Analog
    – 1.8 V to 3.3 V Interface Logic
♦ Power Down Management
    – ADC, DAC, CODEC, MIC Pre-Amplifier, PGA
♦ Software Mode (I²C & SPI™ Control)
♦ Hardware Mode (Stand-Alone Control)
♦ Digital Routing/Mixes:
    – Analog Out = ADC + Digital In
    – Digital Out = ADC + Digital In
    – Internal Digital Loopback
    – Mono Mixes
♦ Flexible Clocking Options
    – Master or Slave Operation
    – High-Impedance Digital Output Option (for easy MUXing between CODEC and Other Data Sources)
    – Quarter-Speed Mode - (i.e. Allows 8 kHz Fs while maintaining a flat noise floor up to 16 kHz)

APPLICATIONS
♦ HDD & Flash-Based Portable Audio Players
♦ MD Players/Recorders
♦ PDAs
♦ Personal Media Players
♦ Portable Game Consoles
♦ Digital Voice Recorders
♦ Digital Camcorders
♦ Digital Cameras
♦ Smart Phones