Ultra Compact, Low Power Smart Codec with Dual Core DSP

The CS47L24 combines an advanced 300 MIPS dual core DSP with a high performance audio hub codec embedded with SoundClear® software technology to add “voice” to mobile, wearable and smart home devices. SoundClear Control enables 'always on' voice with the option of local command and control — all at power levels that are kind on battery life. This highly integrated IC features a variety of power efficient, fixed function, audio-processing blocks supported by a fully flexible, all digital mixing and routing engine with sample rate converters to provide design flexibility across a variety of platforms. The power, clocking and output driver architectures of the CS47L24 are designed to maximize battery life for voice, music and standby modes using 1.8 V and 1.2 V external supplies.

Technologies

Smart Codecs, Audio DSPs

Features

  • 300 MIPS, 300MMAC dual-core audio-signal processor
  • Enhanced DRE processing (eDRE) for 121dB SNR
  • Fixed function signal-processing functions
  • Multi-channel asynchronous sample-rate conversion
  • Integrated multi-channel 24-bit hi-fi audio hub codec
  • Four digital microphone inputs (two stereo interfaces)
  • Stereo headphone/earpiece/line output driver
  • Mono 2 W Class D speaker output driver
  • Three full digital audio interfaces
  • Flexible clocking, derived from MCLKn or AIFn
  • Two low power frequency-locked loops (FLLs) support reference clocks down to 32 kHz
  • Configurable functions on two GPIO pins
  • Integrated regulators and charge pumps
  • Small WCSP package, 0.4-mm ball array

Parametric Specifications

DACs 3
ADCs 4
DAC Dynamic Range (dB) 121
ADC Dynamic Range (dB) 121
DAC THD+N (dB) -85
ADC THD+N (dB) -88
Sample Rate (kHz) 192
Analog Power Supply (V) 1.8
Supply Current (µA) 1.2-1.8
Package 63 WCSP

Technical Documents

CS47L24 Product Bulletin

May 11, 2017, Jun 2015 : 408 Kb

CS47L24 Product Data Sheet

May 11, 2017, Rev 4.1 : 3.4 Mb

Software and Tools

Device Pack for CS47L24

Sep 26, 2017, v1.1.4 : 12.7 Mb

Press Releases

2017

Jul 06

Cirrus Logic Accelerates Design of Next Generation Voice-Enabled Devices with Voice Capture Development Kit for Amazon Alexa Voice Service

Development Kit Offers Complete Low-Power, Two-Mic Solution to Deliver Superior Alexa Voice Interaction Experiences

More

Comprehensive Solutions