Smart Codec with Low Power Audio DSP
The CS47L35 combines an advanced DSP feature set with a highly integrated audio codec to deliver the Cirrus Logic voice and audio experience for mid-tier smartphones. The CS47L35 features a 450 MIPS three-core audio signal processor with a high performance 4/3 channel, 24-bit high-fidelity codec embedded with SoundClear® software technology to support multiple concurrent audio functions including multi-microphone wideband noise reduction, speaker protection, acoustic echo cancellation (AEC), low power single and multi-trigger word detection and engine support, and advanced speech and media enhancement.
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Technologies
Features
- 450 MIPS, 450 MMAC multi-core audio-signal processor
- Sensor hub connectivity, with event time-stamp functions
- Programmable wideband, multi-mic audio processing
- Four ADCs, 100 dB SNR microphone input, three DACs, 122 dB SNR headphone playback
- Integrated multichannel 24-bit hi-fi audio hub codec
- Up to six analog or four digital microphone inputs
- Stereo headphone/earpiece/line output driver
- Earpiece, speaker and digital (PDM) output interfaces
- Three full digital audio interfaces
- Flexible clocking, derived from MCLKn, AIFn or SLIMbus
- Low power frequency-locked loops (FLLs) support reference clocks down to 32 kHz
- Configurable functions on up to 16 GPIO pins
- Integrated regulators and charge pumps
- Small WLCSP package, 0.4-mm ball array
Parametric Specifications
| DACs | 3 |
| ADCs | 4 |
| DAC Dynamic Range (dB) | 115 |
| DAC THD+N (dB) | -93 |
| ADC THD+N (dB) | -86 |
| Sample Rate (kHz) | 8-192 |
| Analog Power Supply (V) | 1.8 |
| Digital Power Supply (V) | 1.2; 1.8 |
| Power Consumption (mW) | 2.4-759 |
| Package | 101 WLCSP |
