CS48DV2B Data Sheet
The new CS48DV2B supports a host of signal processing
applications concurrently, including the mass production-ready
Dolby Volume solution. See Section 3. for details about
firmware concurrency on the CS48DV2B. The target
applications for the CS48DV2B DSP are:
FEATURES
World’s most cost-effective 32-bit DSP featuring Dolby®
Volume and Audistry® by Dolby
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Supports native processing at input Fs up to 48kHz
Single download image enables support for 32 KHz,
44.1 kHz, and 48 kHz audio input
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Digital Televisions
Soundbars / DTVs with Integrated Soundbars
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PMD/iPod® Docking Stations
Automotive Head Units
CS48DV2B supports up to 2.0 channels of audio input
and up to 2.1 channels of output
Automotive Outboard Amplifiers
Enables concurrent processing features beyond Dolby
Volume including Tone Control, Multiband Parametric EQ,
Bass Management, Delays.
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Blu-ray Disc® & DVD Receivers / HTiBs
PC Speakers
All of these applications and many more that use volume
control and are subject to playback from sources that do not
have consistent volume levels will benefit from the CS48DV2B
Dolby Volume solution.
Configurable Serial Audio Inputs/Outputs
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Configurable for all input/output digital audio types
(I2S/LJ/RJ)
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32-bit data path delivers uncompromised dynamic
range
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192 kHz capable integrated S/PDIF transmitter
DAO can operate in master or slave mode (SCLK &
LRCLK)
Integrated Clock Manager/PLL
Capable of operating from a wide variety of external
crystals or external oscillators
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Slave Host Boot Capability via Serial Interface
Ordering Information:
™
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SPI interface capable of running up to 25 MHz
during run time
See page 21 for ordering information.
1.8V Core and 3.3V I/O that is tolerant to 5V input
Low-power Mode enabled
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Energy Star® Design Compliance Capability via low-
power mode, 268 µW in Standby mode
Serial
Control 1
GPIO
Debug
2.0 Ch.
Audio In
Watchdog
TMR1
D
M
A
32-bit
DSP
TMR2
S/PDIF
P
X
Y
Up to 2.1 Ch
Audio Out
PLL
Copyright 2009 Cirrus Logic
FEB ’09
CONFIDENTIAL
DS875F2
http://www.cirrus.com