ARM Cortex-A8
From Wikipedia, the free encyclopedia
Processor core in computers
| General information | |
|---|---|
| Launched | 2005 |
| Designed by | ARM Holdings |
| Common manufacturer | |
| Performance | |
| Max. CPU clock rate | 0.6 GHz to at least 1.0 GHz [1] [additional citation(s) needed ] |
| Cache | |
| L1 cache | 32 KiB/32 KiB |
| L2 cache | 512 KiB |
| Architecture and classification | |
| Instruction set | ARMv7-A |
| Physical specifications | |
| Cores |
|
The ARM Cortex-A8 is a 32-bit processor core licensed by ARM Holdings implementing the ARMv7-A architecture.
Compared to the ARM11, the Cortex-A8 is a dual-issue superscalar design, achieving roughly twice the instructions per cycle. The Cortex-A8 was the first Cortex design to be adopted on a large scale in consumer devices.[2]
Features
[edit ]Main article: Comparison of ARMv7-A cores
Key features of the Cortex-A8 core are:
- Frequency from 600 MHz to 1 GHz and above
- Superscalar dual-issue microarchitecture
- NEON SIMD instruction set extension [3]
- 13-stage integer pipeline and 10-stage NEON pipeline [4]
- VFPv3 floating-point unit
- Thumb-2 instruction set encoding
- Jazelle RCT (also known as ThumbEE instruction set)
- Advanced branch prediction unit with >95% accuracy
- Integrated level 2 Cache (0–4 MiB)
- 2.0 DMIPS/MHz
Chips
[edit ]Several system-on-chips (SoC) have implemented the Cortex-A8 core, including:
- Allwinner A1X
- Apple A4
- Freescale Semiconductor i.MX51 [5]
- Rockchip RK2918, RK2906 [6]
- Samsung Exynos 3110
- TI OMAP3
- TI Sitara ARM Processors
- Conexant CX92755 [7]
See also
[edit ]
- ARM architecture
- Comparison of ARMv7-A cores
- JTAG
- List of applications of ARM cores
- List of ARM cores
References
[edit ]- ^ "Cortex-A8". ARM Developer. Retrieved January 3, 2023.
- ^ Gupta, Rahul (April 26, 2013). "ARM Cortex: The force that drives mobile devices". The Mobile Indian . Retrieved 2023年07月30日.
- ^ Cortex-A8 Specification Summary; ARM Holdings.
- ^ Williamson, David, ARM Cortex A8: A High Performance Processor for Low Power Applications (PDF), archived from the original (PDF) on 2015年01月01日
- ^ "i.MX51 Applications Processor and Linux Hands on" (PDF). Archived from the original (PDF) on 2011年11月19日. Retrieved 2011年10月20日.
- ^ "RK29XX". Archived from the original on 2011年11月05日.
- ^ "CX97255" (PDF). Archived from the original (PDF) on 2012年11月19日.
External links
[edit ]- ARM Holdings