SAA7785 Datasheet, PDF (2/68 Pages) NXP Semiconductors – ThunderBird Avenger PCI Audio Accelerator

Philips Semiconductors
ThunderBird Avenger^TM PCI Audio
Accelerator
Preliminary Specification
SAA7785
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 I²S 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
1999 Nov 12
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