Harman Patil (Editor)

ARM Cortex A8

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Designed by
  
ARM Holdings

Microarchitecture
  
ARMv7-A

L1 cache
  
32 KiB/32 KiB

Common manufacturer(s)
  
TSMC

Cores
  
1

L2 cache
  
512 KiB

The ARM Cortex-A8 is a 32-bit processor core licensed by ARM Holdings implementing the ARMv7-A architecture.

Contents

Compared to the ARM11 core, the Cortex-A8 is a dual-issue superscalar design, achieving roughly twice the instructions executed per clock cycle. The Cortex-A8 was the first Cortex design to be adopted on a large scale for use in consumer devices.

Features

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
  • 13-stage integer pipeline and 10-stage NEON pipeline
  • 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

    Several system-on-chips (SoC) have implemented the Cortex-A8 core, including:

  • Allwinner A1X
  • Apple A4
  • Freescale Semiconductor i.MX51
  • Rockchip RK2918, RK2906
  • Samsung Exynos 3110
  • TI OMAP3
  • TI Sitara ARM Processors
  • Conexant CX92755

    • References

    ARM Cortex-A8 Wikipedia
    (Text) CC BY-SA