[信息与通信]嵌入式OS与通信软件02_ARM.pdf

嵌入式OS与通信软件 ARM Architecture 北京邮电大学计算机科学与技术学院 邝坚 ARM – Advanced RISC Machines 成立于1990年(苹果、Acorn 、VLSI) 。知识 产权（IP ）供应商 ARM特点： （准）RISC体系结构，16/32位指令集 功耗小、成本低 合作伙伴众多，发展迅速 目前的系列： ARM7/9/9E/10E/11 （通用）Cortex （A/R/M ） 及SecurCore （安全）系列 Typical ARM SamSung: S3C44B0/S3C2410/S3C4510.. Atmel: AT91M40800/AT91FR40162.. *Intel: Xscale TI: OMAP/C5470.. Philips: LPC2140 Motorola: DragonBall Cirrus Logic: EP7212/EP7312/EP9312 NS、Apple 、Mitsubishi、SUN、Lucent、Sanyo、 Altera 、Triscend 、Agilent 、Toshiba 、Fujitsu、 Sharp、ST、3COM、OKI、YAMAHA 、Rohm、 Rockwell、Hyundai、Sony、Alcatel … Versions ARMv4 can be considered a 32-bit ISA operating in a 32-bit address space. Implementations include some members of the ARM7™ core family and Intel StrongARM® processors. ARMv4 ARMv4T Added the 16-bit Thumb instruction set while retaining all the benefits of a 32-bit system. Versions ARMv5TE Introduced improvements to the Thumb architecture, along with ARM ‘Enhanced’ DSP instruction set extensions. ARMv5TEJ Added the Jazelle extension to support Java acceleration technology. Versions ARMv6 Improvements in many areas covering the memory system, exception handling and better support for multiprocessing environments. Also includes media instructions to support SIMD software execution. ARMv7 Defines three distinct processor profiles: the A profile for sophisticated, virtual memory-based OS and user applications; the R profile for real- time systems; and the M profile optimized for microcontroller and low-cost applications. /products/CPUs/architect ure.html ARM Architecture AMBA – Advanced Microcontroller Bus Architecture 。用于扩充不同处理器（如 DSP）、I/O （如UART/Timer等） AHB (Advanced