Smart Codec. CS47L35 Datasheet

CS47L35 Codec. Datasheet pdf. Equivalent

Part CS47L35
Description Smart Codec
Feature CS47L35 Smart Codec with Low-Power Audio DSP Features • Three full digital-audio interfaces • 45.
Manufacture Cirrus Logic
Datasheet
Download CS47L35 Datasheet



CS47L35
CS47L35
Smart Codec with Low-Power Audio DSP
Features
• Three full digital-audio interfaces
• 450 MIPS, 450 MMAC multicore audio-signal processor
• Programmable wideband, multimic audio processing
— Standard sample rates from 8 to 192 kHz
— Multichannel time-division multiplexing (TDM) support
on AIF1
— Transmit-path noise reduction and echo cancelation • Flexible clocking, derived from MCLKn, AIFn, or SLIMbus
— Wind-noise, side-tone, and other programmable filters • Low-power frequency-locked loop (FLL) supports
• Integrated multichannel 24-bit hi-fi audio hub codec
reference clocks down to 32 kHz
— 101-dB signal-to-noise ratio (SNR) mic input (48 kHz)
Configurable functions on up to 16 general-purpose
input/output (GPIO) pins
— 122-dB SNR headphone playback (48 kHz)
• Sensor-hub connectivity, with event time-stamp functions
• Up to six analog or four digital microphone (DMIC) inputs • Integrated regulators and charge pumps
• Stereo headphone/earpiece/line output driver: 30 mW
into 32-load at 0.1% total harmonic distortion + noise
• Small WLCSP package, 0.4-mm ball array
(THD+N)
Applications
• Class D speaker and digital (pulse-density modulation,
PDM) output interfaces
• Smartphones and multimedia handsets
• SLIMbus® audio and control interface
• Tablets and mobile Internet devices
MICBIAS1A
MICBIAS1B
MICBIAS2A
MICBIAS2B
AVDD
AGND
VREFC
IN1BLN
IN1BLP
IN1ALN/DMICCLK1
IN1ALP
IN1BRN
IN1BRP
IN1ARN/DMICDAT1
IN1ARP
IN2LN/DMICCLK2
IN2LP
IN2RN/DMICDAT2
IN2RP
MCLK1
MCLK2
RESET
IRQ
LDO and
MICBIAS
Generators
Reference
Generator
Charge Pumps
CS47L35
ADC Digital Core
Programmable multicore DSP
Advanced multimic Tx noise reduction
ADC Advanced multimic acoustic echo cancelation
External
Accessory Detect
DAC
DAC
Input
Select
Input
Select
AIFnBCLK
AIFnLRCLK
SLIMCLK
Digital Mic
Interface
ADC
ADC
Advanced always-on buffering
Trigger word detection and ASR assist
Speaker protection
Five-band equal izer (EQ)
Dynamic range control (DRC)
Low-pass/high-pass filter (LHPF)
Automatic sample -rate detection
Digital Mic
Interface
Clocking
Control
1 x FLL
SYSCLK
Digital Audio
Interface AIF1
Tone generator
Noise generator
PWM signal generator
Haptic control signal generator
Digital Audio
Interface AIF2
Digital Audio
Interface AIF3
DAC
PDM
Driver
AEC (Echo Cancelation)
Loop-Back
General
Purpose
Switch
SLIMbus
Interface
Control Interfaces (SPI, I2C)
Master Interface (I2C)
HPOUTL
HPOUTFB1
HPOUTR
EPOUTP
EPOUTN
SPKOUTP
SPKOUTN
SPKCLK
SPKDAT
GPSWP
GPSWN
http://www.cirrus.com
Copyright Cirrus Logic, Inc. 2015–2018
(All Rights Reserved)
DS1085F3
SEP '18



CS47L35
CS47L35
Description
The CS47L35 is a highly integrated, low-power audio hub for smartphones, tablets, and other portable audio devices. It
combines an advanced DSP feature set with a flexible, high-performance audio hub codec. The CS47L35 combines three
programmable DSP cores with a variety of power-efficient fixed-function audio processors. Flexible GPIO and an I2C
master interface are also incorporated, enabling sensor-hub connectivity.
The DSP cores support multiple concurrent audio features, including multimic wideband noise reduction,
high-performance acoustic-echo cancelation (AEC), speech enhancement, advanced media enhancement, and many
more. The DSP cores are supported by a fully flexible, all-digital mixing and routing engine with sample-rate converters,
for wide use-case flexibility. Support for third-party DSP programming provides far-reaching opportunities for product
differentiation.
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.
The stereo headphone driver provides ground-referenced output, with noise levels as low as 0.8 VRMS for hi-fi quality line
or headphone output. The CS47L35 also features a mono bridge-tied load (BTL) earpiece output, mono 2.7-W Class D
speaker driver, two channels of stereo PDM output, and an IEC-60958-3–compatible S/PDIF transmitter. A signal
generator for controlling haptics devices is included; vibe actuators can connect directly to the Class D speaker output, or
via an external driver on the PDM output interface.
The CS47L35 supports up to six analog inputs, and up to four PDM digital inputs. Microphone activity detection with
interrupt is available. A smart accessory interface supports most standard 3.5-mm accessories. Impedance sensing and
measurement is provided for external accessory and push-button detection (Android™ headset specification compliant).
The CS47L35 is configured using the SLIMbus, SPI™, or I2C interfaces. The integrated FLL provides support for a wide
range of system-clock frequencies. The device is powered from 1.8- and 1.2-V supplies. (A separate 4.2-V battery supply
is typically required for the Class D speaker drivers). 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.
2 DS1085F3





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