14.2 Description

The ARM Cortex-A5 processor is a high-performance, low-power, ARM macrocell with an L1 cache subsystem that provides full virtual memory capabilities. The Cortex-A5 processor implements the ARMv7 architecture and runs 32-bit ARM instructions, 16-bit and 32-bit Thumb-2 instructions, and 8-bit Java™ byte codes in Jazelle® state.

The Cortex-A5 NEON Media Processing Engine (MPE) extends the Cortex-A5 functionality to provide support for the ARM v7 Advanced SIMD v2 and Vector Floating-Point v4 (VFPv4) instruction sets. The Cortex-A5 NEON MPE provides flexible and powerful acceleration for signal processing algorithms including multimedia such as image processing, video decode/encode, 2D/3D graphics, and audio. See the Cortex-A5 NEON Media Processing Engine Technical Reference Manual.

The Cortex-A5 processor includes TrustZone® technology to enhance security by partitioning the SoC’s hardware and software resources in a Secure world for the security subsystem and a Normal world for the rest, enabling a strong security perimeter to be built between the two. See Security Extensions overview in the Cortex-A5 Technical Reference Manual. See the ARM Architecture Reference Manual for details on how TrustZone works in the architecture.