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ARM ships first cores from ARM11 microarchitecture

Posted: 16 Oct 2002 ?? ?Print Version ?Bookmark and Share

Keywords:arm? arm1136j s? arm1136jf s? arm11 microarchitecture? armv6?

ARM Ltd. has introduced two new microprocessor cores implemented using the ARM11 microarchitecture and based on the ARMv6 instruction set architecture.

The ARM1136J-S core and the ARM1136JF-S core are targeted at a wide range of consumer, wireless, and networking applications such as STBs, digital cameras, 2.5 and 3G mobile phones, VoIP infrastructure equipment, broadband modems, residential gateways, WLAN access points, and security devices.

Both operate over 533MHz and deliver an unoptimized performance >600 Dhrystone MIPS at under 200mW. They are also claimed to feature improved real time response with a low-interrupt-latency mode, vectored interrupt support, and three times faster interrupt entry using new stack and mode-change instructions.

Based on the ARM11 microarchitecture, the cores feature an eight-stage pipeline, with two-cycle cache access, to enable high frequency implementation. They also have a flexible, high-performance memory system with configurable instruction and data cache, plus high-speed local memory with dedicated DMA to augment the processing of real-time data. Four, high-speed 64-bit system on-chip interconnects ensure ample bandwidth for data and instructions.

The Memory Management Unit supports leading OS such as Microsoft, SymbianOS, WindRiver and Linux, and includes physically tagged caches to reduce OS context switch times, and improve processor utilization by eliminating forced cache flushing by the OS.

The ARMv6 architecture contributes SIMD instructions to accelerate multimedia performance, such as MPEG4 encoding in software, by a factor of two over the ARMv5 architecture.

The 'F' extension added to the ARM1136JF-S core signifies the inclusion of a floating-point coprocessor function that allows the core to be used in automotive applications.

Both cores include the ARM Jazelle extensions for enhanced Java acceleration and the ARM E extensions for DSP acceleration.

The ARM1136J-S core and the ARM1136JF-S core are supported by the ARM RealView development solution consisting of RealView Compilation Tools, the RealView Debugger tool, RealView ICE products, and RealViewTrace products.

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