Description

THE EMU10K1 DIGITAL AUDIO PROCESSOR

 

FEATURES

Implemented in a 0.35-micron, three-metallayer CMOS process, the processor resides on a 6.7-mm × 6.5-mm die containing 2,439,711 transistors, a 33-MHz PCI clock, and 50-MHz and 100-MHz internal audio clocks. It has a 64-channel wavetable synthesizer with perchannel sample rate converter, digital filter, envelope generator, low-frequency oscillator, and routing/mixing logic. The EMU10K1 accesses digital audio data stored in system memory via a 64-channel PCI bus master system with virtual memory mapping identical to that in Intel CPUs. A powerful audio effects processor adds environmental simulation, 3D positioning, and special effects to audio from the wavetable synthesizer and numerous other digital audio sources such as S/PDIF (Sony/Philips Digital Interface), I2 S (Philips Inter-IC Sound bus), and AC97 (Audio Codec 97). Since the processor operates at a fixed 48- kHz audio sampling rate, it contains dedicated, high-quality sample rate converters.