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The CS4630 is a high-performance upgrade to the CS4624 PCI audio accelerator. The CS4630 supports legacy compatibility modes, enables real mode DOS compatibility within PCI-only audio subsystems. This device, combined with application and driver software, provides a complete system solution for hardware acceleration of Microsoft's DirectSound, DirectSound3D, DirectInput, and Wavetable Synthesis. WDM drivers provide support for Windows 98, Windows 2000, and XP. The CS4630 is based on the Cirrus Logic Stream Processor (SP) DSP core. The SP core is optimized for digital audio processing, and handles complex signal processing tasks such as Sensaura 3D, 4-channel output, and hardware wavetable synthesis. The SP core is supported by a bus mastering PCI interface and a built-in dedicated DMA engine with hardware scatter/gather. These functions ensure extremely efficient transfer of audio data streams, between host-based memory buffers, for maximum performance and minimal host CPU loading.
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- 420 MIPs SLIMD DSP architecture with more memory
- Hardware acceleration for Microsoft DirectSound® and DirectSound3D positional audio
- PC 98 and PC 99 compliant
- Sensaura 3-D, 2 or 4 channel audio
- EAX 1.0 enhanced environmental audio standard
- Unlimited-voice wavetable synthesis with effects + DLS
- Acoustic echo cancellation for NetMeeting
- 10-band graphic equalization
- High-quality hardware sample rate conversion (90+ dB)
- Legacy support PC/PCI, DDMA, and CCLS
- PCI 2.1 compliant PCI interface
- Full duplex, 128-stream, DMA interface with hardware scatter/gather support
- PCI power management APM 1.2 and ACPI 1.0
- Power Management Event (PME) generation: D0-D3cold
- Dual AC `97 2.1 CODEC interface
- Asynchronous digital serial interface (ZV Port)
- S/PDIF digital input/output support for PCM/AC3 5.1
- DirectInput joystick and MPU-401 MIDI in/out
- 3.3/2.5V power supply (5V tolerant I/O)
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