The ARM Cortex-A17 is a 32-bit processor core implementing the
ARMv7-A architecture, licensed by
ARM Holdings
Arm is a British semiconductor and software design company based in Cambridge, England.
Its primary business is in the design of ARM processors (CPUs). It also designs other chips, provides software development tools under the DS-5, RealView ...
. Providing up to four
cache-coherent cores, it serves as the successor to the
Cortex-A9
The ARM Cortex-A9 MPCore is a 32-bit multi-core processor that provides up to 4 cache-coherent cores, each implementing the ARM v7 architecture instruction set. It was introduced in 2007.
Features
Key features of the Cortex-A9 core are:
* ...
and replaces the previous
ARM Cortex-A12 specifications. ARM claims that the Cortex-A17 core provides 60% higher performance than the Cortex-A9 core, while reducing the power consumption by 20% under the same workload.
ARM renamed Cortex-A12 to a variant of Cortex-A17 since the second revision of the A12 core in early 2014, because these two were indistinguishable in performance and all features available in the A17 were used as upgrades in the A12.
New features of the Cortex-A17 specification, not found in the Cortex-A9 specification, are all improvements from the third-generation ARM Cortex-A, which also includes the Cortex-A7 and Cortex-A15:
* Hardware
virtualization
In computing, virtualization or virtualisation (sometimes abbreviated v12n, a numeronym) is the act of creating a virtual (rather than actual) version of something at the same abstraction level, including virtual computer hardware platforms, stor ...
and 40-bit
Large Physical Address Extensions
ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of reduced instruction set computer (RISC) instruction set architectures for computer processors, configured ...
(LPAE) addressing
* Full-system coherency, bringing support for the
big.LITTLE architecture
*
NEON
Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. It was discovered (along with krypt ...
unit, for
floating-point
In computing, floating-point arithmetic (FP) is arithmetic that represents real numbers approximately, using an integer with a fixed precision, called the significand, scaled by an integer exponent of a fixed base. For example, 12.345 can ...
data and
SIMD
Single instruction, multiple data (SIMD) is a type of parallel processing in Flynn's taxonomy. SIMD can be internal (part of the hardware design) and it can be directly accessible through an instruction set architecture (ISA), but it shoul ...
processing
* Deeper integer
instruction pipeline
In computer engineering, instruction pipelining or ILP is a technique for implementing instruction-level parallelism within a single processor. Pipelining attempts to keep every part of the processor busy with some instruction by dividing inco ...
, with 10–12 stages
* Full
out-of-order execution
In computer engineering, out-of-order execution (or more formally dynamic execution) is a paradigm used in most high-performance central processing units to make use of instruction cycles that would otherwise be wasted. In this paradigm, a proces ...
design with load/store units
Modern Linux kernel implementations will report and support the above features thus :
processor : 3
model name : ARMv7 Processor rev 1 (v7l)
BogoMIPS : 48.00
Features :
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xc0d
CPU revision : 1
See also
*
ARM architecture
ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of reduced instruction set computer (RISC) instruction set architectures for computer processors, configured ...
*
Comparison of ARMv7-A cores
This is a comparison of processors based on the ARM family of instruction sets designed by ARM Holdings and 3rd parties, sorted by version of the ARM instruction set, release and name.
ARMv6
ARMv7-A
This is a table comparing central proc ...
*
Comparison of ARMv8-A cores
This is a comparison of processors based on the ARM family of instruction sets designed by ARM Holdings and 3rd parties, sorted by version of the ARM instruction set, release and name.
ARMv6
ARMv7-A
This is a table comparing central proc ...
*
List of applications of ARM cores
This is a list of products using processors (i.e. central processing units) based on the ARM architecture family, sorted by generation release and name.
__TOC__
List of products
}
, Broadcom BCM2837: ''Raspberry Pi 3'',
HiSilicon Kirin Series: ' ...
*
List of ARM cores
This is a list of central processing units based on the ARM family of instruction set
In computer science, an instruction set architecture (ISA), also called computer architecture, is an abstract model of a computer. A device that executes ...
References
External links
*
{{Application ARM-based chips
Cortex-A17
ARM Holdings IP cores