CS42L92 datasheet(2/333 Pages) CIRRUS

2 / 333 page

DS1162F2

CS42L92

Description

The CS42L92 is a highly integrated low-power audio system for smartphones, tablets, and other portable audio devices.

Multiple input/output paths are supported by a fully flexible all-digital mixing and routing engine, incorporating sample rate

converters and other signal-processing functions for wide use-case flexibility. The integrated DSP provides a

general-purpose signal processing capability; this is supported by general-purpose timer and event-logger functions.

The digital audio interfaces and hi-fi DACs enable 32-bit playback through the entire signal chain. Native audio playback

at sample rates up to 384 kHz is possible, concurrent with voice and ultrasonic input paths.

The CS42L92 supports up to eight analog inputs and up to eight PDM digital inputs. Low-power input modes are available

for always-on (e.g., voice-trigger) functionality using either analog or digital input. A smart accessory interface, with

multipurpose impedance sensing and measurement capability, supports detection of external headsets and push buttons.

Dual headphone connections (e.g., 3.5-mm and USB-C™) can be detected simultaneously.

Four hi-fi quality stereo headphone drivers are provided, each supporting stereo ground-referenced or mono bridge-tied

load (BTL) configurations. Multiple headphone/earpiece outputs can be supported, including balanced stereo headphone

configurations. The output drivers offer noise levels as low as 0.63

VRMS into line or headphone loads. Selectable hi-fi

filters support playback modes at sample rates up to 384 kHz.

Two channels of PDM output (one stereo interface) are available, and also an IEC-60958-3–compatible S/PDIF

transmitter. A signal generator for controlling haptics devices is included; vibe actuators can connect directly to the PDM

output interface. All inputs, outputs, and system interfaces can function concurrently.

A SLIMbus interface supports multichannel audio paths and host control register access. Three further digital audio

interfaces are provided, each supporting a wide range of standard audio sample rates and serial interface formats.

Automatic sample-rate detection enables seamless wideband/narrowband voice-call handover. Two FLLs are integrated,

providing support for a wide range of system-clock frequencies.

The CS42L92 is configured using the SLIMbus, SPI™, or IC interfaces. The device is powered from 1.8- and 1.2-V

supplies. The power, clocking, and output driver architectures are designed to maximize battery life in voice, music, and

standby modes. Low-power (10

A) Sleep Mode is supported, with configurable wake-up events.

CS42L92 датащи(PDF) 2 Page - Cirrus Logic