PCI Audio Accelerator
User’s Guide
1
1. INTRODUCTION
The Crystal CS4280 is a PCI audio accelerator with integrated legacy games support
suitable for desktop PC designs. When combined with driver software and an AC’97
codec, this device provides a complete high quality audio solution. Legacy
compatibility is achieved via PC-PCI, DDMA, and CrystalClear Legacy Support.
This product includes an integrated FM synthesizer and Plug-and-Play interface. In
addition, the CS4280 offers power management features.
NOTE : It is recommended to use ACTIVE SPEAKER in order to activate your sound
card properly.
1.1 Checklist
♦ Crystal CS4280 Sound Card x 1
♦ Driver CD x 1
♦ Manual x 1
2. FEATURES
• Chipset: Crystal CS4280
• Bus form: 32 bit PCI bus master, PCI 2.1 compliant Plug and Play compatible
• Audio Converters : 16-bit stereo sigma-delta ADC and DAC. Sophisticated
sample rate conversion for quality digital mixing.
• Sample Rates : 16-bit simultaneous record and playback at full bandwidth. 4KHz
to 48KHz sample rate both mono and stereo
• 128 Soft Voices Wavetable Synthesis
• Integrated FM Synthesiser
• 3D Spatialization
• Support Microsoft DirectSound and DirectSound 3D
• Audio Inputs / Outputs : Stereo input for line-in, CD-in, Aux-in and mono
microphone input plus stereo line output and speaker output.
• Output Power Amp (Optional) : 2 watts per channel
• MPU401 (UART mode) support game port for joysticks or external MIDI
• AC’97 Codec
• Compatibility : Full DOS games compatibility via PC/PCI, DDMA and
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