Audio Codec 1ADC / 2DAC 24-Bit 48-Pin LQFP Tray

The CS42324 is a highly integrated stereo audio CODEC. The CS42324 performs stereo analog-todigital (A/D) and up to four channels of digital-to-analog (D/A) conversion of up to 24-bit serial values at sample rates up to 96 kHz.A 5:1 stereo input multiplexer is included for selecting between line-level inputs. The output of the input multiplexer is followed by an advanced 3rd-order, multi-bit delta-sigma modulator and digital filtering/decimation. Sampled data is transmitted by the serial audio interfaceat rates from 4 kHz to 96 kHz, in either Slave or Master Mode.The D/A converter is based on a 5th-order multi-bit delta-sigma modulator with an ultra-linear low-pass filter and offers a volume control that operates with a 0.5 dB step size. It incorporates selectable soft ramp and zero crossing transition functions to eliminate clicks and pops.An integrated 7:1 stereo output multiplexer on each of the three stereo 2 Vrms line-level outputs is used to select any of the 5 stereo analog inputs, for analog bypasssupport, or the outputs of the 2 internal DACs. Each 2 Vrms output can be muted with the selectable analog mute function.Standard 50/15 µs de-emphasis is available for a 44.1 kHz sample rate for compatibility with digital audio programs mastered using the 50/15 µs pre-emphasis technique. Integrated digital level translators allow easy interfacing between the CS42324 and other devices operating over a wide range of logic levels.The CS42324 is available in a 48-pin LQFP package in Commercial (-40°C to +85°C) and Automotive (-40°C to +105°C) grades. The CDB42324 Customer Demonstration board is also available for device evaluation and implementation suggestions.

• Direct Interface with 1.8 V to 3.3 V Logic Levels
• Supports Asynchronous Serial Port Operation
  • Two Independent Clock Domains
  • ADC, DAC1, and DAC2 can be Independently Assigned to the Two Clock Domains
• Each Serial Port Supports Master or Slave Operation
• Internal Digital Loopback
• +3.3 V Analog Power Supply
• +3.3 V Digital Power Supply
• +9 V to +12 V High-Voltage Power Supply
• Hardware or Software Mode Configuration
  • Supports I²C® and SPI™ Software Interface