Cirrus Logic Delivers First Available Single-Chip Audio Processor for Complex Decode Demands of Blu-ray Disc, HD DVD Formats
April 17 2007 - 9:01AM
Business Wire
As consumer electronics manufacturers ramp products supporting the
next-generation HD-DVD� and Blu-ray Disc� DVD high-definition DVD
formats, Cirrus Logic Inc (Nasdaq:CRUS) has introduced a
single-chip audio processor, the CS49700, designed to meet the
demanding processing tasks associated with these emerging new
standards. Available today in volume production, the CS49700
enables mass-market home theater products, such as audio/video
receivers, combination high-definition DVD players and receivers
and Blu-ray Disc and HD-DVD players, at all price points. Today�s
DVD standard calls for chips that support two primary audio decode
surround-sound standards, Dolby� Digital and DTS� standards. For
next-generation Blu-ray and HD-DVD formats, audio processor ICs
must support up to six surround-sound audio algorithms, including
Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS, DTS Master
and DTS High Resolution, any of which may be featured within
high-definition DVD disc media. The CS49700 supports each of these
audio formats and is designed for home theater products such as
mid- and low-tier. With its 32-bit, dual-core structure, the
CS49700 generates true parallel processing power of 1.8 giga
operations per second (300 million instructions per second). The
CS49700�s hardware design and software features, including
firmware, are optimized for audio processing, which provides a more
efficient chip solution that requires less memory and reduced
overall processing power compared to many general purpose DSPs.
�While early generations of high-definition DVD equipment often
rely on two or more DSP processors, Cirrus Logic has delivered a
single-chip solution that is available today and meets all of the
complex audio requirements of Blu-ray and HD-DVD formats,� said
Keith Cheney, vice president and general manager, Embedded Products
Division, Cirrus Logic. �Through Cirrus Logic�s audio focus, we
have delivered to manufacturers a full-featured but cost-effective
IC solution that will speed the introduction of new products and
give consumers an amazing audio experience that matches the
high-resolution video.� Compared to today�s standard DVD format,
supporting all of the necessary audio algorithms and system
clocking challenges for both Blu-ray and HD-DVD formats is
substantially more complex. In addition to the numerous current
standard and additional new algorithms that must be supported, many
of these new algorithms require bit-rate processing far greater
than the typical 384 kbps of today�s DVD systems. For example,
lossless surround sound algorithms, such as Dolby�s TrueHD and DTS
HD Master Audio, require bit-rate processing as high as 18 to 24
Mbps, respectively. Multiple audio formats also present myriad
clock frequency challenges, to which the CS49700 adeptly manages
via an advanced phase-lock-loop (PLL) that generates a system clock
source. The CS49700 also offers such post-processing algorithms as
Dolby Pro Logic� IIx, DTS 96/24, Neo:6�, MPEG, AAC, SRS� Circle
Surround� II, Dolby Headphone�, Dolby Virtual Speaker�, SRS
Tru-Surround XT� and THX� Ultra2, which are built into the IC�s
on-chip ROM. The CS49700 also provides support for the HDMI 1.3
interface, the emerging digital audio and video interconnect
standard that is used to send digital audio and video signals among
home theater equipment, such as A/V receivers, DVD players and
flat-panel televisions. Pricing and Availability The CS49700 is
currently in volume production and is available in a 144-pin LQFP
priced at $7.50 in 100,000 quantities. Cirrus Logic Inc. Cirrus
Logic develops high-precision, analog and mixed-signal integrated
circuits for a broad range of consumer and industrial markets.
Building on its diverse analog mixed-signal patent portfolio,
Cirrus Logic delivers highly optimized products for consumer and
commercial audio, automotive entertainment and industrial
applications. The company operates from headquarters in Austin,
Texas, with offices in Europe, Japan and Asia. More information
about Cirrus Logic is available at www.cirrus.com. Cirrus Logic and
Cirrus are trademarks of Cirrus Logic Inc. All other product names
noted herein may be trademarks of their respective holders.
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