CS48DV2/6 Processor with Dolby® Volume
The final solution to inconsistent volume issues
CS48DV2/6 Processor Overview:
The CS48DV2 and CS48DV6 processors give
OEMs a cost effective, fixed-function,
simple-to-design Dolby Volume solution
Dolby Volume Overview:
• Consistentvolumeacrossallinputsources
andallcontent
• Consistentvolumewithinthesameprogram
• Eliminatesneedtoconstantlyadjustvolume
• Full,rich,andconsistentexperienceatall
volumelevels
• Improvedvocalandsurroundperceptionat
lowvolumelevels
• Noartifactsoraudiblesideeffects
CS48DV2/6 Processor Features:
• 2.0to2.1Channel/3.0to5.1 Channel
32-bit fixed-function Dolby Volume
processing (512 FFT Window / 20-Band)
•CS48DV2 supports up to 2.1 channel 32-bit
PCM I/O at Fs of 32kHz, 44.1kHz & 48kHz
•CS48DV6 supports up to 5.1 channel 32-bit
PCM I/O at Fs of 32kHz, 44.1kHz & 48kHz
•Integrated S/PDIF Transmitter
•2/6 Channeld DSD input support (Rev. B)
•SPI™/I2C® serial control port
•Low-power standby: 260µW
CS48DV2/6 Key Benefits:
•Easy to design – only 10 parameters to
control from host microcontroller
•High-performance & low cost
•No external SRAM/SDRAM memory needed
• Dedicatedpartnumbersimplifies tracking
and reporting tasks, reducing liability
• Firmwareimagecanbedownloadedfrom
eitherhostmicrocontrollerorfromexternal
SPIFlashdeviceatspeedsupto12.288Mhz www.cirrus.com
CS48DV2/6 Processor Target Markets:
Digital Televisions 5.1 Channel AVRs
Automotive Entertainment 2.1/5.1 Channel Hi-Fi,
DVD Receivers and HTiBs
The CS48DV2 Processor with Dolby Volume implemented in a 2.1 channel DTV application
www.cirrus.com
CS48DV2/6
UsingtheCirrusLogicCS48DVx/CS49DV8
ControllerGUIforDolbyVolume
The CS48DV2/6 ICs are programmed with the latest Dolby Volume firmware
using the Cirrus Logic proprietary GUI software development & evaluation tool
called Dolby Volume Controller. This same tool then configures the CS48DV2/6
through the SPI™/I2C® serial port via the USB 2.0 cable. The IC can be sent a
command to boot itself using firmware loaded from ROM within the CS48DV2/6
(starting with Rev B Silicon - available in April, 2008), or it may be downloaded
through the serial control port from either a master host microcontroller or an
external I2C EEPROM or SPI Flash device. In all cases, the host microcontroller
is responsible for downloading the specific hardware and software configuration
commands. All Dolby Volume parameters running on the CS48DV2/6 firmware
can be adjusted in real-time as well as allowing 6 different presets to be saved
and recalled easily, enabling very simple and quick “A/B” listening tests for the
target design.
Cirrus Logic, Inc. · 2901 Via Fortuna · Austin TX 78746 USA · T 512-851-4000 · T 800-888-5016 · F 512-851-4977
Product Bulletin 0204-1007-PB v1.0.3 © 2007 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. Dolby and the double D symbol are registered trademarks of Dolby Laboratories. All other brand and product names in this document
may be trademarks or service marks of their respective owners.
Ordering Information:
CS48DV2/6 Processor Family
Device(s) CS48DV2A-CQZ
(Available December ‘07)
CS48DV2B-CQZ
(Available April ‘08)
CS48DV6B-CQZ
(Available April ‘08)
CS48DV2A-DQZ
(Automotive)
(Available December ‘07)
Package 48-Pin LQFP
Eval. Boards CRD48DV2-USB
CDB48DV6-USB
Application Note AN298PPMN
Tools Cirrus Logic CS48DVx /
CS49DV8 Dolby Volume
Controller GUI:
software tool offers
a simple and quick
method during the
evaluation & design
stage
CRD48DV2-USB
2 Channel
Dolby Volume
Evaluation Kit CDB48DV6-USB 6 Channel Dolby Volume Evaluation Kit