CS47L90 [CIRRUS]
Low Power, Highly Integrated Smart Audio Codec;
| 型号： | CS47L90 |
| 厂家： | 
CIRRUS LOGIC |
| 描述： | Low Power, Highly Integrated Smart Audio Codec |
| 文件： | 总2页 (文件大小：207K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CS47L90
Low Power, Highly Integrated Smart Audio Codec
Featuring SoundClear Software for “Always On, Always Listening”
Voice Activation and SmartHIFI for Mobile Playback
Product Overview
The Cirrus Logic CS47L90 is an ultra low power high-fidelity smart audio codec that combines an
advanced DSP feature set with a flexible and highly integrated hi-fi audio codec featuring Cirrus
Logic’s SmartHIFI™. With seven programmable DSP cores, the CS47L90 can support multiple
voice applications and audio features in parallel, including multi-mic wideband noise reduction,
high performance acoustic-echo cancellation (AEC), stereo ambient noise cancellation (ANC), and
advanced speech and media enhancements – without draining battery life.
The CS47L90 features a 975 MIPS multi-core audio signal processor with advanced clocking architecture and a high performance
4 channel ADC/8 channel DMIC 24-bit hi-fi audio codec embedded with SoundClear® software technology. SoundClear Control
provides “always on, always listening” seamless multi-trigger word detection that does not require the applications processor
to remain awake and thus conserves standby mode power. SoundClear Playback provides speaker protection and virtual
stereo sound, while the codec’s DNA delivers SmartHIFI audio for mobile playback devices. SmartHIFI is a unique combination
of powerful DSP processing and audio performance to deliver an audio experience typically associated with high-end audio
equipment but now optimized for mobile audio playback while maximizing battery life. In addition to leading specifications for
typical audio parameters such as THD, SNR, etc, SmartHIFI includes a high-end feature set – tunable hi-fi filters, jitter-free audio,
high sample rate and bit depth support (24/32-bit, 192 kHz). Support for third party DSP programming also allows creativity for
customer defined product feature differentiation.
Additional specifications for the CS47L90 include three stereo, multi-purpose headphone output drivers each with stereo ground
reference or mono BTL outputs, 127dB SNR and noise levels as low as 0.63 µVRMS for hi-fi quality headphone output, plus a
four-channel digital speaker interface. Programmable wideband, multi-microphone processing is standard with the device’s seven
analog inputs and up to 10 PDM digital inputs, along with single-ended or differential mic/line inputs. The device is powered from
1.8 V and 1.2 V supplies with support for low power sleep mode (10 mA) and configurable wake-up events.
Available Software Features*
Communications
SoundClear Voice
Make/receive calls with optimized
voice quality based on use cases
from a smartphone or tablet
• Up to 16 kHz processing
• Speaker protection
VOICE
• Up to 3-mic handset or speakerphone • Wind noise reduction
Tx NR & AEC
Convenience
SoundClear Control
“Always on” listening with minimal
power consumption range
• Multi-trigger word detection
• User defined trigger word detection
• Extended audio buffer
• Two-channel input, output
• Barge-in supported
CONTROL
Capture
SoundClear Record
Capture noise-free audio when and
where needed
• Up to 48 kHz processing
• 2~4 Concurrent MIC input processing
• Wind/mic/focus/background
noise reduction
RECORD
Content
SoundClear Playback
• MasterHIFI™
Enjoy 192k, 24-bit high resolution
audio playback; support for branded
third party algorithms
• Multi-band compressor
• Stereo ANC
PLAYBACK
• Speaker protection
Contextual Awareness
SoundClear Sense
• Proof of sensor fusion capability
SENSE
*Software features and pricing vary based on specific use application. Contact a local Cirrus Logic sales representative for further information.
CS47L90 Low Power Smart Audio and Sensor Hub System
Target Applications
The CS47L90 is targeted at mobile and portable applications, including smartphones, tablets and multimedia handsets.
System Features
“Always on” low current consumption
975 MIPS seven-core audio DSP
• Fixed function signal-processing
functions
Integrated multi-channel 24-bit hi-fi
audio hub codec featuring SmartHIFI™
• Integrated multi-channel 24-bit hi-fi
audio hub codec with SmartHIFI
• Low distortion: 95 dB THD+N
at low power, 32 Ω
• Including low power mode A/D converters to
enable low power when using analog mics
G Dynamic range control,
fully parametric EQs
32-bit playback support
• Via audio outputs such as headphone,
earpiece and external speakers
G Tone, noise, PWM, haptic
control signal generators
• Multi-channel asynchronous
sample rate conversion
• Low noise: 127 dB SNR
headphone playback (48 kHz)
• Dedicated audio FLL minimizes
clock jitter
• To digital SPDM output and external devices
• Enables 32-bit playback through devices
such as external D/A converters
Up to seven analog or ten digital
• High dynamic range: 115 dB
headphone, referenced to 1 VRMS
• Linearity: >100 dB THD
• Transparent frequency
Enhanced memory sharing between DSP cores
• Up to four 1K windows can
microphone inputs (two stereo interfaces)
be allocated to any core
Multipurpose headphone/earpiece/line
output driver
• Dramatically improves memory sharing
and phase response
• 30 mW into 32 Ω load at 0.1% THD+N
• Hi-fi filters for audiophile quality playback
G +/-0.003 dB
Seamless advanced clocking architecture
• FLL(s) generate all clocks needed,
internal and external
G Low headphone amp output
impedance maintains
Speaker protection
flatness even when driving
complex impedance loads
• Transparent time domain response:
pro audio hi-fi filters (based on
WM8741 pro audio DAC)
• To/from any reference from 32 kHz – 27 MHz
with no buffering/streaming gap during swap
• Powerful sample rate conversion
• Lowest possible power for all use cases
• Natural speech recognition with no
pause/prompt
Four full digital audio interfaces
• Standard sample rates from
192 kHz, 32-bits
• TDM support on all AIFs
• High sample rate and bit depth
G 24/32-bit, 192 kHz playback
• Low headphone amp output
impedance: 0.2 Ω
Compact WCSP package with 0.4-mm,
staggered 173-ball array
• Simplified software integration
• Jitter-free audio
Block Diagram
Schematic
MICBIAS1A
MICBIAS1B
MICBIAS1C
MICBIAS1D
MICBIAS2A
MICBIAS2B
MICBIAS2C
MICBIAS2D
JACKDET1
JACKDET2
HPDET1
Reference
Generator
Charge Pumps
CS47L90
LDO and
MICBIAS
Generators
Accessory
Detect
HPDET2
MICDET1/HPOUTFB1
MICDET1/HPOUTFB2
MICDET1/HPOUTFB3
MICDET1/HPOUTFB4
Digital Core
Programmable multicore DSP sensor hub
Stereo adaptive RX ambient noise cancelation
Advanced multimic TX noise reduction
Advanced multimic acoustic-echo cancelation
Advanced “always-on” buffering
Trigger word detection
IN1ALN, IN1BLN
IN1ALP, IN1BLP
DAC
DAC
HPOUTnL
IN1ARN/DMICDAT1, IN1BRN
IN1ARP/DMICCLK1, IN1BRP
IN2ALN/DMICDAT2, IN2BLN
IN2ALP/DMICCLK2, IN2BLP
IN2RN
Input Select
4 × ADC
×3
HPOUTnR
HPOUT3FB
Speaker protection
5 × Stereo
Five-band equalizer (EQ)
Dynamic range control (DRC)
Low pass/high pass filter (LHPF)
Asynchronous sample-rate conversion
Automatic sample-rate detection
Digital Mic
Interface
IN2RP
SPKCLK
SPKDAT
PDM Driver
DMICCLKn
×3
DMICDATn
PWM signal generator
SYSCLK
ASYNCCLK
DSPCLK
MCLK1
MCLK2
Haptic control signal generator
Clocking
Control
AIFnBCLK
AIFnLRCLK
SLIMCLK
AEC (Echo Cancelation)
Loop-Back
GPSWnP
GPSWnN
×2
RESET
IRQ
GPIO
Digital Audio Interfaces
AIF1, AIF2, AIF3, AIF4
SLIMbus
Interface
Control Interfaces (2 × SPI, 1 × I2C)
Master Interface (3 × I2C)
GPIOn
×8
Sales Support
Cirrus Logic, Inc.
T+1-512-851-4000
T+1-800-888-5016
F+1-512-851-4977
North America +1-866-630-1158
Asia Pacific +852 2376-0801
Japan +81 (3) 6732-8477
800 West Sixth Street
Austin, Texas 78701
United States
Toll-Free +1-800-888-5016
Europe/UK +44 (0) 1628-89 1-300
www.cirrus.com
© 2016 Cirrus Logic, Inc. All rights reserved. Cirrus Logic, Cirrus and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc.
Other brand and product names in this document may be trademarks or service marks of their respective owners.
SEPTEMBER 2016
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