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CS47L35

Smart Codec with Low-Power Audio DSP
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CS47L35 Overview

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.

CIRRUS®
CIRRUS ROCKS®
ENGINEERED TO ROCK®
INNOVATION THAT ROCKS®

Product 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 multi-channel 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

Analog Input TypeSingle-ended; Differential
Analog Output TypeSingle-ended; Differential
Channels In6
Channels Out4
Control InterfaceSPI/I²C
ADC Dynamic Range (dB)101
DAC Dynamic Range (dB)115
ADC THD+N (dB)-86
DAC THD+N (dB)-93
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)2.4-759
DSP IncludedYes
Target MarketConsumer
Features3 cores, 450 MIPS, 672kB memory, Master Hi-Fi Headphone/Earpiece Output/Line outputs, Mono Speaker output, SLimbus, digital audio, SPI and I²C interfaces, Multiple GPIO pins
Package101 WLCSP

Design Resources

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Evaluation Boards

  • CS47L35 Evaluation Board (CDB47L35)

    Order Sample
  • CDB6271-2 (Lochnagar 2)

    CDB6271-2 (Lochnagar 2)

    Cirrus Logic’s CDB6271-2 ('Lochnagar 2') is an evaluation and development platform with support for interchangeable daughter cards. It is designed to provide a variety of audio inputs and outputs to Cirrus Logic devices and to allow for configuring and programming them in a variety of possible use cases. The CDB6271-2 is designed to operate with the WISCE™ Development Tools Suite, which is a prerequisite for use of the board. The CDB6271-2 ('Lochnagar 2') support can be added to WISCE by installing the Device Pack, which also installs the necessary audio and communication drivers.

    Order SampleUser Guide

Software Packages

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