Low Power Audio Codec with SoundWire and Audio Processing
The CS42L42 is a low power audio codec with integrated MIPI SoundWire® interface or I²C/I²S/TDM interfaces designed for portable applications. It provides a high dynamic range, stereo DAC for audio playback and a mono high dynamic range ADC for audio capture. The CS42L42 features high performance up to 24-bit audio for ADC and DAC audio playback and capture functions and for the S/PDIF transmitter. The CS42L42 architecture includes bypassable SRCs and a bypassable, three-band, 32-bit parametric equalizer that allows processing of digital audio data. A digital mixer is used to mix the ADC or serial ports to the DACs. There is independent attenuation on each mixer input. The processing along the output paths from the ADC or serial port to the two stereo DACs includes volume adjustment and mute control.
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Technologies
Features
- Stereo headphone output with 114 dB dynamic range
- 2 x 35 mW output power into 30 Ω
- Mono mic input with 114 dB dynamic range
- Integrated AC-coupling capacitors
- OMTP and AHJ headset-type detect
- Mic short S0 button detect with ADC auto-mute
- Mono equalizer and sidetone mix
- MIPI SoundWire or I²S/TDM audio interface
- Audio sample rate converters
- S/PDIF transmitter
- Fractional-N PLL
- Integrated power management
Parametric Specifications
| DACs | 2 |
| ADCs | 1 |
| DAC THD+N (dB) | -90 |
| ADC THD+N (dB) | -85 |
| Sample Rate (kHz) | 8-192 |
| Analog Power Supply (V) | 1.8 |
| Package | 49 WLCSP; 48 QFN |
MasterHIFI
For more information about Cirrus Logic's Hi-Fi product line, visit the Hi-Fi Audio page.
