CS47L24 Overview
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.
Product 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 WLCSP package, 0.4-mm ball array
Parametric Specifications
| Package | 63 WLCSP |
| Analog Input Type | Single-ended-Differential |
| Analog Output Type | Single-ended-Differential |
| Channels In | 4 |
| Channels Out | 0 |
| Control Interface | SPI/I²C |
| DAC Dynamic Range (dB) | 115 |
| DAC THD+N (dB) | -92 |
| Sample Rate (kHz) | 8-192 |
| Analog Power Supply (V) | 1.8 |
| Digital Power Supply (V) | 1.2-1.8 |
| Logic Power Supply (V) | 1.8-3.3 |
| Power Consumption (mW) | 3.2-833 |
| DSP Included | Yes |
Design Resources
Schematic and Layout
CDB47L24 M-1 Evaluation Board Resources
5 MbSeptember 2017
Datasheet
CS47L24 Datasheet
Rev 4.1 | 3 MbJanuary 2017