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1.10 Audio Subsystem
The Audio Codec ’97 (AC ’97) compatible audio subsystem includes these features:
• Split digital/analog architecture for improved signal-to-noise ratio (≥ 85 dB) measured at line
out, from any analog input, including line in, and CD-ROM
• 3-D stereo enhancement
• Power management support for ACPI 1.0a
The audio subsystem consists of these devices:
• Creative Sound Blaster AudioPCI 128V
• Crystal Semiconductor CS4297A stereo audio codec
• Audio connectors
For information about Refer to
Obtaining audio software and utilities Section 1.2, page 13
1.10.1 Creative Sound Blaster AudioPCI 128V
The Creative Sound Blaster AudioPCI 128V features:
• Creative ES1373D digital audio controller
• Interfaces to the PCI bus as a Plug and Play device
• 100% DOS legacy compatible
• Access to main memory (through the PCI bus) for wavetable synthesis support – does not
require a separate wavetable ROM device
• Conforms to the PC 98 and PC 99 design guides
For information about Refer to
Creative Sound Blaster AudioPCI 128V http://www.soundblaster.com
1.10.2 Creative ES1373D Digital Audio Controller
The Creative ES1373D digital audio controller’s features include:
• PCI 2.1 compliant
• PCI bus master for PCI audio
• 128-voice wavetable synthesizer
• Aureal A3D
†
API, Sound Blaster Pro
†
, Roland MPU-401 MIDI, joystick compatible
• Ensoniq 3D positional audio and Microsoft DirectSound
†
3D support
1.10.3 Crystal Semiconductor CS4297A Analog Codec
The Crystal Semiconductor CS4297A is a fully AC ’97 compliant codec. The codec's features
include:
• 18-bit stereo full-duplex operation
• Up to 48 kHz sampling rate
• Connects to ES1373D digital controller using a five-wire digital interface