An 8-way VLIW embedded multimedia processor with advanced cache mechanism

Author

Hayakawa, Fumihiko ; Okano, Hiroshi ; Suga, Atsuhiro

Author_Institution

Fujitsu Labs. Ltd., Kawasaki, Japan

fYear

2002

fDate

2002

Firstpage

213

Lastpage

216

Abstract

An 8-way VLIW embedded multimedia processor is developed in 0.11 μm 7-layer Cu/Al metal CMOS process technology. The processor achieved the peak performance of 2132 MIPS/2.1 GFLOPS/4.26 GOPS at 533 MHz. This processor equips 4-way integer and 4-way floating/media pipelines. Each media pipeline can execute a 4-parallel SIMD instruction, so 16-operations can be executed at a cycle. It also equips the data and instruction caches, and each of their size is 32 KB. The data cache has a non-aligned data access mechanism and an enhanced store operation mechanism, and a 9% performance improvement was verified. The instruction cache has a reconfigurable associativity mechanism, and achieved more than 12% of power consumption decrease. As a result, this processor achieved more than twice the performance over our previous processor. This processor enables MPEG2 MP@ML 2-stream decoding.

Keywords

CMOS digital integrated circuits; VLSI; cache storage; decoding; microprocessor chips; multimedia computing; parallel architectures; pipeline processing; video coding; 0.11 micron; 2.1 GFLOPS; 2132 MIPS; 32 KB; 4-parallel SIMD instruction; 4-way floating/media pipelines; 4-way integer pipelines; Cu-Al; Cu/Al metal CMOS process technology; MPEG2 MP@ML 2-stream decoding; advanced cache mechanism; data cache; eight-way VLIW embedded multimedia processor; enhanced store operation mechanism; instruction cache; nonaligned data access mechanism; reconfigurable associativity mechanism; CMOS process; CMOS technology; Circuits; Decoding; Energy consumption; Laboratories; Microprocessors; Pipelines; Process design; VLIW;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2002. Proceedings. 2002 IEEE Asia-Pacific Conference on

Print_ISBN

0-7803-7363-4

Type

conf

DOI

10.1109/APASIC.2002.1031570

Filename

1031570