ARM Cortex-A53处理器详细介绍

Architecture

ARMv8

Multicore

1-4X SMP within a single processor cluster

Multiple coherent SMP processor clusters through AMBA 4 technology

ISA Support

AArch32 for full backward compatibility with ARMv7

AArch64 for 64b support and new architectural features

TrustZone security technology

NEON Advanced SIMD

DSP & SIMD extensions

VFPv4 Floating point

Hardware virtualization support

Debug & Trace

CoreSight DK-A53

Cortex-A53 Microarchitectural Features

Feature

Benefits

AArch32

AArch64

ARM v8 architecture

64 and 32-bit execution states for scalable high performance

Yes

Yes

Hardware-accelerated cryptography

3x-10x better software encryption performance Useful for small granule decrypt/encrypt too small to efficiently offload to HW accelerator (e.g. https)

Yes

Yes

NEON technology

Can accelerate multimedia and signal processing algorithms such as video encode/decode, 2D/3D graphics, gaming, audio and speech processing, image processing, telephony, and sound synthesis. Also useful in accelerating floating point code with SIMD execution.

Yes

Yes

Floating point unit

Hardware support for floating point operations in half-, single- and double-precision floating point arithmetic.Now with IEE754-2008 enhancements.

Yes

Yes

Load Acquire, Store Release instructions

Designed for C++11, C11, Java memory models. Improves performance of thread-safe code by eliminating explicit memory barrier instructions

Yes

Yes

Large Physical Address reach

Enables the processor to access beyond 4GB of physical memory.

Yes

Yes

TrustZone Technology

Ensures reliable implementation of security applications ranging from digital rights management to electronic payment.

Yes

Yes

Hardware Virtualization

Enables multiple software environments and their applications to simultaneously access the system capabilities

Yes

Yes

Automatic event signalling

For power-efficient, high-performance spinlocks.

Yes

Yes

Double Precision Floating Point SIMD

Allows SIMD vectorisation to be applied to a much wider set of algorithms (e.g. scientific / High Performance Computing (HPC) and supercomputer).

No

Yes

64-bit Virtual address reach

Enables virtual memory beyond 4GB 32b limit. Important for modern desktop and server software using memory mapped file i/o, sparse addressing.

No

Yes

Larger register files

31 x 64b general purpose registers: increases performance, reduces stack use. Fewer stack spills, ena