CS485xx Product Bulletin

CS485xx Family Audio DSP
Better Sound Made Simple
CS485xx Family Target Markets:
The CS48520, CS48540 and CS48560 ICs
give OEMs a cost effective and simple-to-design
audio post-processing solution that provides an
extensive selection of enhanced audio features
to maximize the end user’s listening experience.
Digital Televisions/Soundbars
Accessory Products
CS485xx Family Features:
• Multichannel 32-bit audio post processing at
150 MHz with dual MACs (300 M MACs/Sec)
• CS48520 supports 4 channel 32-bit PCM I/O
• CS48540 supports 8 channel 32-bit PCM I/O
• CS48560 supports 12 channel 32-bit PCM I/O
• 192 kHz S/PDIF Tx
• SPI™/I2C ® serial control port
Blu-ray®/DVD™ Receivers
& HTiB Systems
• Low-power standby: 260µW
• Large on-chip RAM & ROM
• Programmable GUI software tool
• Licensed third party audio processing
algorithms in ROM, plus extensive library
of Cirrus proprietary downloadable and
customizable firmware - see back for complete
list of algorithms
CS485xx Family Key Benefits:
• Easy to design – most standard processing
features & some 3rd party algorithms in ROM
• DSP Composer GUI simplifies programming
• High performance-to-cost ratio
• No external memory needed
• Complete PCM processor in a single IC:
• Matrix decoders
• Automatic volume leveling/modeling
• Speaker and headphone virtualizers
• Bass management
• Speaker and cabinet tuning
• Automatic speaker/room EQ
• Lip-sync delay
Cirrus Logic’s CS48520 & CS4525 as used in a 2.1 channel DTV application
CS485xx Family
DSP GUI Programming Environment with
CDB48500-USB Development Platform
Ordering Information:
CS485xx Family Audio Processors
48-Pin LQFP
Evalulation Board
Application Note
AN298, AN298 Family
DSP Composer
GUI Software Tool
Standard Processing Bass management
Graphic/Parametric EQ
Matrix mixer
Tone control, etc.
Cirrus Proprietary Algorithm Support
Cirrus BandXpandeR™
Cirrus Extra Surround™
Cirrus Original Surround™
Cirrus Virtualizer Technology™
Cirrus Original Multichannel
Surround™ / II (COMS/COMS2)
Cirrus Dynamic Volume Leveler™
Cirrus Intelligent Room Correction™ / II (IRC/IRC2)
Extensive 3rd Party Algorithm Support
Audistry™ by Dolby®
Audyssey™ Dynamic EQ
Audyssey™ Dynamic Volume
Dolby® Pro Logic® II/IIx
Dolby® Virtual Speaker®
Dolby® Headphone®
DTS Neo:6™
DTS SurroundSensation™
Neural-THX® Surround
SRS® Automotive™
SRS® CircleSurround® II
SRS® TruSurround XT/HD/HD4™
SRS® Volume IQ™
The CS48520/40/60 is programmed using the Cirrus Logic proprietary GUI
software development tool called DSP Composer™. An audio processing
chain is designed using a drag and drop interface. The tool then configures
the CS48520/40/60 through the SPI™/I2C® serial port. The firmware
may be loaded from the ROM within the CS48520/40/60 or it may be
downloaded through the serial control port.
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Product Bulletin 0186-0108-PB © 2008 Cirrus Logic, Inc. All rights reserved. Product information is subject to change without notice. Cirrus Logic, Cirrus, and the Cirrus Logic logo
designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.