摘要：MIPS
At the core of the user experience.®
“The 24K core family offers SoC designers the headroom needed to create competitive and differentiated products, while giving them the tools to get to market with speed, ease and efficiency,” said Tony Massimini, chief technologist at market research firm, Semico Research.
Since the launch of 24K family last year, semiconductor companies and OEMs licensed the 24K cores more than 18 times. Among those publicly announced: Atheros, Infineon, Kawasaki Microelectronics, LSI Logic, Micronas, PMC-Sierra, Realtek, Scientific-Atlanta and TZero.
24K-based solutions target a broad spectrum of high-performance, low-power embedded applications, from set-top boxes and digital TV, to DSL, VoIP, 802.11 and ultra wideband (UWB), to printers, network computers and industrial control systems.
In May 2005, MIPS Technologies introduced the MIPS32 24KE ™ family of cores, the first to integrate the MIPS ® DSP Application-Specific Extension (ASE) announced last year. The 24KE cores leverage the high-performance 24K microarchitecture and add DSP functionality while significantly reducing overall SoC die area, cost and power consumption.
With the 24KE cores, the need for a separate DSP core is eliminated, simplifying system and software complexity.
The 24KE cores will be supported by a complete suite of software development tools, the MIPS DSP Library and a third-party DSP applications network.
When performance, power or cost are important, MIPS32 24K cores offer a superior solution.
MIPS32® 24KE™ Core Family
DSP Functionality for Enhanced System-Level
Performance and Reduced SoC Costs
The MIPS32 24KE® core family leverages the high-performance 24K ™ microarchitecture while incorporating the MIPS® DSP Application Specific Extension (ASE). These instructions improve signal processing performance up to 200 percent over a range of embedded applications when compared to RISC implementations without the DSP ASE. The 24KE family provides very efficient DSP capability, while significantly reducing overall SoC die area, cost and power consumption.
With up to a 625 MHz host plus DSP per-formance, the 24KE core enables multimedia and communications applications to be subsumed into a single, simplified design environment. The CorExtend™ capability of the 24KE Pro cores allows users to supercharge application performance by defining and adding their own instructions.
Target markets for the 24KE cores include set-top boxes, DTVs, DVD recorders, voice switches, IP phones, digital cameras, printers, modems, residential gateways and automotive telematics. Typical applications enhanced by the 24KE cores include voice and speech processing, narrow band, broadband, digital audio, graphics, video and imaging.
The 24KE core family is supported by a complete suite of software development tools, the MIPS DSP Library, and a third- party DSP applications network. This enables SoC designers to work in a single design environment and lower system costs by migrating DSP functionality onto a 24KE core.
FEATURES
MIPS32® DSP Architecture
Four 64-bit accumulators, two control registers
64-bit data paths to caches and external interface
Vectored interrupts and support for external interrupt controller
GPR shadow registers (optionally, one or three additional shadows can be added to minimize latency for interrupt handlers)
DSP ASE Instructions
8-,16- and 32-bit SIMD instructions
Saturating and fractional math
Popular DSP operations, such as MAC, dot-product, absolute and complex-multiply
Key features such as variable bit insert/extract and virtual circular buffers, complex multiply
DSP ASE Library
A robust set of key DSP functions, including DCT, FFT and FIR filters
24KEc™ Core: This base core includes a high-performance 32x32 multiply/divide unit and configurable MMU with TLB or fixed mapping.
24KEf™ Core: Adds hardware floating- point support that is fully compliant with IEEE 754.
24KE Pro Cores: 24KEc Pro and 24KEf Pro cores feature the CorExtend™ capability.
