Harman Kardon AVR240 Service Manual page 98

AVR240
®
• THX Ultra2 Cinema
Post-Processor
• Cirrus Extra Surround
• Cirrus Original Multichannel Surround
• Virtual Dolby Digital
™
Pro Logic II Virtualizer Module
• VMAx VirtualTheater
®
• HDCD Multichannel Decoder
• DVD-Audio/Video and Multichannel SACD
Bass Management
• DTS/DTS-ES 96/24
• DTS/DTS-ES 96/24
®
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 or enhanced post-processing code
modules are only available to customers who
qualify for the Cirrus Framework
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 I
format. DSPAB can be controlled serially using the
SPI standard and can also be controlled via a
Parallel host control port using the Motorola
®
Intel communication standards.
™
7.1 Channel
™
™
™
/Virtual Dolby Digital
™
Virtualizer Module
™
Back-End Decoder
™
Back-End Decoder with
™
TM
CS49400
2
S or LJ
®
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
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 (I
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 I
of these outputs (AUDAT3, AUDAT7) can be
configured as
transmitter.
This document focuses on the electrical features of
the CS49400. The features are described from a
hardware design perspective. It should be
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
or
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
98
harman/kardon
in consumer entertainment
2
S or LJ). DSPC
2
S or LJ format. Two
a IEC60958-format
®
®
S/PDIF