A microprocessor with a 128-bit CPU, ten floating-point MAC's, fourfloating-point dividers, and an MPEG-2 decoder

摘要

A 250-MHz microprocessor intended for home computer entertainmentnconsists of a CPU core with 128-b multimedia extensions, twonsingle-instruction, multiple-data (SIMD) very long instruction wordn(VLIW) vector processors containing ten floating-point multipliernaccelerators and four floating-point dividers, an MPEG-2 decoder, anten-channel direct memory access (DMA) controller, and other peripheralsnwith 128 b internal buses on one die. The core is a two-way superscalarnMIPS-compatible microprocessor with 16-kB scratch-pad RAM. Each vectornprocessor is a five-way SIMD-VLIW architecture, which is tightlyndedicated for specific applications concerning three-dimensionalngeometry calculation and physical simulation. A DMA controller connectsnbetween main memory and each processor's local memory to conceal memorynaccess penalty. It contains 10.5 M transistors in 17×14.1 mm andndissipates 15 W at 1.8 V