Cirrus Logic CS48LV13 - Manual

Copyright  Cirrus Logic, Inc. 2014
(All Rights Reserved) http://www.cirrus.com
DS1057F1
FEB ‘14
Ultralow Power HD Voice Processors,
Featuring SoundClear® Technology
Overview of Features
• Complete easy-to-implement voice solution including all
essential voice, audio, and speech DSP features for
flagship smartphones, tablets, and computing products
• SoundClear Voice™ noise reduction, echo cancellation,
and voice enhancement
• RAPID2™ GUI-based diagnostic and tuning tool for ease
of design-in
• Media postprocessing support
—Integrated Cirrus Logic playback enhancement for
speakers and headphones
—Optional Dolby® and DTS® playback enhancement 1
• ASR Enhance™ automatic speech recognition (ASR)
preprocessing for increased ASR accuracy in noisy
environments
• Voice activity detector (VAD) enables always-on speech
recognition
• TrulyHandsfree™ voice control by Sensory, Inc.
supported
• Powerful 130-MHz dual-MAC 32-bit DSP core
• Ultralow power consumption (core typically <8 mW @ 1 V
during narrowband call)
• I 2 S, I 2 C, SPI™ digital connectivity
1. Use of TrulyHandsfree-, Dolby-, or DTS-supported features requires the existence and proof of a valid license agreement with the
corresponding company to be able to use or distribute its technology in any finished end-user or ready-to-use final product.
CS48LV12 Block Diagram
Co
de
c
S
oC
o
r
A
p
pl
icat
io
n
P
ro
cesso
r
PGA
Noise
Reduction
Acoustic Echo Canceller
Residual Echo Suppressor
NLP Spectrally Matched
Comfort Noise
Dynamic
FlexEQ
ALC PGA
C
o
dec Po
rt
Ho
st
P
or
t
Full-Duplex Control + Voice Activity Detection + Double Talk Detection
PGA
Comfort
Noise
Automatic Volume
Control
Automatic Level
Control
Dynamic
FlexEQ
Noise
Reduction
PGA
Media Processor
GND V
D
V
L
Debug MCLK
I 2 S
Raw
PCM
I 2 S
Clean
PCM
RESET
BUSY
I 2 S
Clean
PCM
CLK
SPI/I 2 C
I 2 S
Raw
PCM
INT
Near
End
Far
End
Optional
CS48LV12/13