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CS42L42

Cirrus Logic
Part Number CS42L42
Manufacturer Cirrus Logic
Description Low-Power Audio Codec
Published Sep 7, 2018
Detailed Description CS42L42 Low-Power Audio Codec with SoundWire®–I2S/TDM and Audio Processing System Features • Integrated fractional-N ...
Datasheet PDF File CS42L42 PDF File

CS42L42
CS42L42

Overview
CS42L42 Low-Power Audio Codec with SoundWire®–I2S/TDM and Audio Processing System Features • Integrated fractional-N PLL • Stereo headphone (HP) output with 114-dB dynamic range — Increases system-clock flexibility for audio processing — Class H HP amplifier with four-level automatic or manual supply adjust — Reference clock sourced from either I2S/TDM bit clock or MIPI SoundWire clock — Power output 2 x 35 mW into 30  • Mono mic input with 114-dB dynamic range — Low-noise headset bias with integrated bias resistor — 1-VRMS input voltage — Integrated AC-coupling capacitors • Integrated detect features — OMTP (Open Mobile Terminal Platform) and AHJ (American headset jack) headset-type detection and configuration with low-impedance internal switches — Mic short (S0 Button) detect with ADC automute — Automatic Hi-Z of headset bias output to ground on headset bias current rise or HP/headset unplug • System wake from headset/headphone plug/unplug or S0 button press • Audio serial port (ASP) — I2S (two channels) or TDM (up to four channels) — Slave or Hybrid-Master Mode (bit-clock slave and LRCK/FSYNC derived from bit clock) — Sample-rate converter (SRC) for two input channels, with bypass — SRC for one output channel, with bypass — User isochronous audio transport support — Supports up to 192-kHz sample rate to S/PDIF output — Sample rate support for 8 to 192 kHz • Integrated power management — Digital core operates from either an external 1.
2-V supply or LDO from a 1.
8-V supply.
— Step-down charge pump improves HP efficiency • Interrupt output — Independent peripheral power-down controls • Mono equalizer for side-tone mix • MIPI® SoundWire® or I2C/I2S/TDM control and audio interface • S/PDIF transmit (Sony/Philips digital interface format) — Standby operation from VP with all other supplies powered off — VP monitor to detect and report brownout conditions — Low-impedance switching suppresses ground-noise Applications • Ultrabooks, tablets, and smartphones ...


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