CS49400 datasheet(35/100 Pages) CIRRUS

35 / 100 page

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THX® Ultra2 Cinema™ 7.1 Channel

Post-Processor

•

Cirrus Extra Surround™

•

Cirrus Original Multichannel Surround™

•

Virtual Dolby Digital™/Virtual Dolby Digital

Pro Logic II™ Virtualizer Module

•

VMAx VirtualTheater™ Virtualizer Module

•

HDCD® Multichannel Decoder

•

DVD-Audio/Video and Multichannel SACD

Bass Management

•

DTS/DTS-ES 96/24™ Back-End Decoder

•

DTS/DTS-ES 96/24™ Back-End Decoder with

THX® Ultra2 Cinema™

All of the above audio post-processing applications

codes and/or Cirrus FrameworkTM modules and

the associated application notes (AN209 and the

associated appendices) are available through the

Crystal WareTM Software Licensing Program. All

standard

enhanced

post-processing

code

modules are only available to customers who

qualify for the Cirrus FrameworkTM CS49400

Family DSPC Programming Kit. Please refer to

AN209 for the latest listing of application codes

and Cirrus FrameworkTM modules available for

DSPC.

2.1 DSPAB

DSPAB is an enhanced version of the CS49300. It

was designed to have legacy code support for all

decoder applications developed for the CS49300. It

includes performance enhancements such as the

ability to decode AAC without the need for

external SRAM memory. DSPAB has a Digital

Audio Input (DAI) and a Compressed Data Input

(CDI) port for data delivery in either I2SorLJ

format. DSPAB can be controlled serially using the

SPI standard and can also be controlled via a

Parallel host control port using the Motorola® or

Intel® communication standards.

2.2 DSPC

DSPC is a 32-bit, general-purpose, fixed-point

RAM-based processor which includes on-chip

ROM tables. It has been designed with a generous

amount of on-chip program and data RAM, and has

all necessary peripherals required to support the

latest

standards

consumer

entertainment

products such as AV receivers and DVD-

Audio/Video players.

DSPC has on-chip data and program RAM, and

both external SDRAM and SRAM memory

interfaces. These interfaces can be used to expand

the data memory. DSPC also has its own 8-channel

digital audio input for post-processing PCM from a

Multichannel Super Audio CD (SACD) input or

DVD-Audio/Video input, via high-performance

A/Ds or from some other type of multichannel

digital input, capable of delivering 4 stereo digital

audio channels such as IEEE1394 (a.k.a. I-Link®

or Firewire®). Data can be delivered to this port

using the standard audio formats (I2S or LJ). DSPC

can be controlled serially using the SPI standard or

via Parallel host control port using the Motorola®

or Intel® standard. DSPC has a Digital Audio

output port that has eight stereo serial data outputs

for a total of 16 channels. Data can be delivered

from these outputs in serial I2S or LJ format. Two

of these outputs (AUDAT3, AUDAT7) can be

configured

IEC60958-format

S/PDIF

transmitter.

This document focuses on the electrical features of

the CS49400. The features are described from a

hardware

design

perspective.

should

understood that not all of the features portrayed in

this document are supported by all of the versions

of application code available. The application code

user’s guides should be consulted to determine

which hardware features are supported by the

software.

Please note that a download of application software

is required each time the part is powered up. This

term should be interpreted as meaning the transfer of

application code into the internal memory of the part

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