CS4961XX Datasheet, PDF (1/2 Pages) Cirrus Logic – New Audio System Processors are Ideal for Digital Audio Networking Applications

CS4961xx
144-pin LQFP
22 mm
22 mm
IC dimensions
(pin-to-pin nominal)
CS4961xx
New Audio System Processors are Ideal for Digital Audio Networking Applications
Highly Integrated Family Combines CobraNet Interface with Powerful Audio DSP Engine to
Dramatically Reduce Overall Audio System Costs
CS4961xx
The new CS4961xx family of ICs integrates
Cirrus Logic’s highly regarded audio digital
signal processor (DSP) with Cirrus Logic’s
award-winning CobraNet^™ technology, which
is the leading standard for delivering real-time,
uncompressed digital audio over Ethernet
networks. The results are highly optimized
audio system processors that offer dramatic
system cost savings and enhanced audio
processing features for manufacturers of
professional, commercial and consumer
networked-audio products.
The CS4961xx audio system processors, which
include the CS496102, the CS496112 and the
CS496122, reduce system costs because they
allow for the removal of a separate, dedicated
audio DSP on the board design. This 32-bit
fixed-point DSP core features 120 MIPS for
custom programming and these three ICs
provide 2, 8 or 16 simultaneous channels of
audio input and output at up to 96 kHz sample
rates. They also provide multiple 16, 20 or
24-bit audio connections across an Ethernet
network. In fact, two-way audio control and
monitoring is possible at any point along
the network.
Featuring a high-speed parallel host port
interface, the CS4961xx allows optional
connection to a host processor as well as
offering Ethernet-based control, monitoring,
and management via industry standard SNMP.
Firmware can be easily updated over Ethernet
using TFTP or via the host interface. Additional
control and monitoring functions are also pro-
vided by the innovative, built-in asynchronous
and packet-bridge functions.
The ICs are designed to expand the market
for CobraNet-enabled networked digital audio
products such as power amplifiers, mixers,
signal processors, intercom systems, ceiling
speakers, loudspeakers, paging systems, and
high-end networked consumer audio gear.
CS4961xx Features
• Combines CobraNet technology with
a powerful 32-bit DSP core
• Integration reduces overall system costs
• Simplifies overall system design effort
• 2x2, 8x8, 16x16 channel ICs
• Supports 48 kHz and up to 96 kHz
sample rates
• Selectable latency of 1.33, 2.66, or
5.33 ms across network
• 32-bit synchronous serial digital audio I/O
• Parallel host control
• Asynchronous serial control transport
• Available in 144-pin LQFP
• 120 MIPS DSP on programmable core
• Audio may be processed from network
or local inputs and sent to local outputs
or to the network
Software Development Kit
• Full-featured DSP assembler and linker
• Includes Cirrus Logic’s DSP Conductor™
software, a graphical audio-oriented
development environment, for easy
adjustments to DSP Parameters
• Integrated target management and
code download
• Real-time control of DSP parameters
over the audio network
• Example DSP code and tutorials
• Microkernel handles all audio I/O and
DSP parameter control
CobraNet Technology Advantages
• Available as low-cost ICs without licensing
or royalty fees
• CobraNet technology can coexist with data
traffic over existing Ethernet networks,
saving money by eliminating additional
infrastructure costs
• De-facto industry standard with tens-of-
thousands of installed nodes in high-profile
“mission-critical” venues worldwide
• Networked audio, control and monitoring
(bi-directional)
• Uses SNMP for control and monitoring
(computer-network friendly)
• Incorporates multiple fault-tolerant features
• Ability to send audio from any CobraNet
interface to any other – unlimited addressing,
unlimited capacity
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