Chipset
 Allegro ESS 1989 Chipset
Standard Feature
Full-Duplex for concurrent recording and playback
Plug and Play
Support & Compatibility
TDMA hardware implementation methods (Option)
Compliance with APM 1.2, ACPI 1.1, and PPMI 1.1
Windows 95/98/NT/2000/XP/XP-64-BIT
Windows Sound, DirectSound System
Sound Blaster, Sound Blaster Pro,
Sound Blaster 16 Emulation
AdLib
PC98/PC99 and WHQL specifications
Legacy audio SB16 support
System Requirement
Windows 98/ME/2000/XP
One 32-bit PCI slot in the PC System
Package Included
Allegro ESS1989 4 channel PCI Sound Card
Software Driver Disc
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Allegro ESS 1989 4 channel Low Profile PCI Sound Card
[A1-19-89-L4]
is a highly integrated PCI solution for the multimedia Low Profile Slim PC. The high bandwidth PCI
bus is utilized to deliver advanced PC audio features, such as DirectSound acceleration
and HRTF3-D positional audio.
The ES1989 implements multi-stream DirectSound and DirectSound3D acceleration with digital
mixing, sample rate conversion, and HRTF 3-D filtering. It includes a programmable audio
digital signal processor and provides simultaneous support for multiple audio streams.
With its built-in DSP core, the ES1989 uses its dedicated DMA engine to handle complex
signal processing tasks with a bus-mastering PCI interface.
Feature List ______________________________
Bus Interface
PCI Low Profile Interface, PCI 2.2 compliant with
bus mastering modes
PCI Power Management Interface(PPMI) Compliant
Analog & Digital Features
AC '97 Link CODEC
Real-time effects processing
16 bit stereo ADC and DAC
16 bit simultaneous record and playback
at full bandwidth
Sample rate up to 48 MHz
< 0.5% PCI Bus bandwidth usage for playing
16 bit / stereo / 44.1kHz
High-quality sample rate conversion and digital mixing
4 Stereo Inputs for LIN-IN, CD-IN, Aux-in,
Mono input for microphone
SPDIF Output for DVD Contect (option)
2 / 4 channel Audio Output : 2 Front & 2 Rear
3D Features
Sensaura CRL Positional 3D
Microsoft DirectSound
Microsoft DirectSound 3D
DirectMusic Hardware Acceleration
Stereo Mixer & Wavetable Synthesizer
Stereo analog mixing from CD-Audio, Line-in
Stereo digital mixing from Voice, FM/Wave-table
Stereo Digital CD-Audio
Mono mixing from MIC and software adjustable volume
Built-in FM Syntehesizer
64 polyphony software wavetable w/DLS-1 Support
Legacy DOS Game Support
Avance Legacy support for Legacy DMAC Emulation
Support DDMA
Full Legacy DOS Games support
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