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ThunderBird Avenger
TM
PCI Audio SAA7785
Accelerator
Philips Semiconductors Preliminary Specification
1999 Nov 12 2
GENERAL DESCRIPTION
The SAA7785 ThunderBird Avenger
TM
is a high-perfor-
mance PCI audio accelerator offering the ultimate
home theater, gaming and music solution. Armed with
QSound’s advanced QMSS
TM
, ThunderBird Avenger
TM
transforms ordinary stereo games, movies and music
to 5.1 speaker output. An integrated S/PDIF OUT con-
nects to consumer audio equipment and S/PDIF IN
support provides digital connection from a CD player or
other digital audio equipment. The ThunderBird Aveng-
er
TM
supports redirection of up to 5.1 streams from PCI
to USB or IEEE 1394 devices. Full hardware accelera-
tion of DirectSound
TM
, 3D audio, music synthesis and
gameport functions provides increased graphic framer-
ates and industry leading low CPU consumption. Utiliz-
ing a specialized DSP controller and combining with a
AC97 codec creates a high quality, high performance,
low cost audio subsystem.
FEATURES
•2, 4, or 5.1 speaker and headphone 3D algorithms
•QSound3DInteractive
TM
interactive positional 3D
•QSound Multi-Speaker System
TM
stereo to quad or
stereo to 5.1 processing
•QSound Environmental Modeling
TM
(I3D Level 2.0,
EAX
TM
1.0/2.0 compatible)
•QXpander
TM
and stereo-to-3D remapping
•Integrated S/PDIF OUT and optional S/PDIF IN
•AC3 5.1 or stereo playback through S/PDIF output
•Processing up to 512 simultaneous inputs including
256 DirectSound streams and up to 96 concurrent
CD quality 3D streams
•Redirection up to 5.1 streams from PCI to USB or
IEEE 1394 devices via 14 Channel Virtual Write
Master
•Superior hardware acceleration for minimum CPU
consumption
•Broadest API compatibility including
DirectSound3D
TM
, EAX
TM
, and A3D
TM
•64 hardware wavetable polyphony
•Professional soft-synth with 256 voice polyphony
and XG support
•Second generation ActiMedia programmable DSP
architecture
•Global reverb for external digital and analog input
sources
•Enhanced MIDI reverb and chorus (per track and
global)
•Independent I
2
S input and output ports
•Comprehensive Real Mode DOS and DOS win-
dows support
•Dual gameport accelerator with leagacy and digital
joystick modes
•PC/PCI, DDMA, and LAM
TM
PCI DMA support
•Supports quad and dual AC97 CODECS
•3.3 v operation with 5 v tolerant I/O
•Windows
(R)
95
, Windows
(R)
98, and Windows
(R)
2000 (WDM) drivers
APPLICATIONS
•Complete audio subsystem when combined with
AC97 CODEC
•PC sound cards and motherboards
•Video games and other PCI bus-based multimedia
applications