ARM Cortex-A72

ARM Cortex-A72
Designed by	ARM Holdings
Microarchitecture	ARMv8-A
Cores	1–4 per cluster, multiple clusters^[1]
L1 cache	80 KiB (48 KiB I-cache with parity, 32 KiB D-cache with ECC) per core
L2 cache	512 KiB to 4 MiB
L3 cache	none

The ARM Cortex-A72 is a microarchitecture implementing the ARMv8-A 64-bit instruction set designed by ARM Holdings. The Cortex-A72 is an out-of-order superscalar pipeline.^[1] It is available as SIP core to licensees, and its design makes it suitable for integration with other SIP cores (e.g. GPU, display controller, DSP, image processor, etc.) into one die constituting a system on a chip (SoC).

The base-line architecture for the Cortex-A72 was the Cortex-A57; however, the design is more than just a simple revision. ^[2] The designers of the Cortex-A72 had three major themes when designing the new core: pushing the performance to the next generation; reducing the power significantly so that it can sustain maximum frequency performance; and reducing the area used by the design, again contributing to a reduction in power, but also enabling low cost designs as well. ^[3]

Overview

Pipelined processor with deeply out of order, speculative issue 3-way superscalar execution pipeline
DSP and NEON SIMD extensions are mandatory per core
VFPv4 Floating Point Unit onboard (per core)
Hardware virtualization support
Thumb-2 instruction set encoding reduces the size of 32-bit programs with little impact on performance.
TrustZone security extensions
Program Trace Macrocell and CoreSight Design Kit for unobtrusive tracing of instruction execution
32 KiB data (2-way set-associative) + 48 KiB instruction (3-way set-associative) L1 cache per core
Integrated low-latency level-2 (16-way set-associative) cache controller, 512 KB to 4 MB configurable size per cluster
48-entry fully associative L1 instruction Translation Lookaside Buffer (TLB) with native support for 4 KiB, 64 KiB, and 1 MB page sizes
- 4-way set-associative of 1024-entry L2 TLB
Sophisticated branch prediction algorithm that significantly increases performance and reduces energy from mispredictionand speculation
Early IC tag –3-way L1 cache at direct-mapped power*
Regionalized TLB and μBTB tagging
Small-offset branch-target optimizations
Suppression of superfluous branch predictor accesses

References

1 2 "Cortex-A72 Processor". ARM Holdings. Retrieved 2014-02-02.
↑ "A closer look at the ARM Cortex-A72". Retrieved 2015-10-26.
↑ "ARM lead architect talks to AA about the Cortex-A72". Retrieved 2015-10-26.

External links

Application ARM-based chips

Application
Processors
(32-bit)

Cortex-A5	Actions ATM702x Amlogic M805/S805 Atmel SAMA5D3 InfoTM iMAPx820, iMAPx15 Qualcomm Snapdragon S4 Play, 200 Telechips TCC892x

Cortex-A7	Allwinner A2x, A3x, A83T, H3, H8 Broadcom VideoCore BCM2836, BCM23550 Freescale QorIQ LS10xx Leadcore LC1813, LC1913 Marvell Armada PXA1920 MediaTek MT65xx Qualcomm Snapdragon 200, 400

Cortex-A8	Allwinner A1x Apple A4 Freescale i.MX5x Rockchip RK291x Samsung Exynos 3110, S5PC110, S5PV210 Texas Instruments OMAP 3 ZiiLABS ZMS-08

Cortex-A9	Actions ATM702x, ATM703x Altera Cyclone V, Arria V/10 Amlogic AML8726, MX, M6x, M801, M802/S802, S812, T866 Apple A5, A5X Broadcom VideoCore BCM21xxx, BCM28xxx Freescale i.MX6x HiSilicon K3V2 InfoTM iMAPx912 Leadcore LC1810, LC1811 MediaTek MT65xx Nvidia Tegra, 2, 3, 4i Nufront NuSmart 2816M, NS115, NS115M Renesas EMMA EV2, R-Car H1, RZ/A Rockchip RK292x, RK30xx, RK31xx Samsung Exynos 4 ST-Ericsson NovaThor Telechips TCC8803 Texas Instruments OMAP 4 VIA WonderMedia WM88x0, 89x0 Xilinx Zynq-7000 ZiiLABS ZMS-20, ZMS-40

Cortex-A15	Allwinner A80 HiSilicon K3V3 MediaTek MT6599 Nvidia Tegra 4, K1 Renesas R-Car H2 Samsung Exynos 5 Texas Instruments OMAP 5, DRA7xx

Cortex-A17	MediaTek MT6595 Rockchip RK3288

ARMv7-A compatible	Apple A6, A6X Broadcom Brahma-B15 Marvell P4J Qualcomm Snapdragon S1, S2, S3, S4 Plus, S4 Pro, 600, 800 (Scorpion, Krait)

Application
Processors
(64-bit)

Cortex-A53	Actions S900 Allwinner A64, H64 Altera Stratix 10 Amlogic S905 EZchip TILE-Mx100 Marvell Armada PXA1928, Mobile PXA1908/PXA1936 MediaTek MT673x, MT675x, MT6795, MT8732, MT8752, Helio X10 Qualcomm Snapdragon 410 Rockchip RK3368 Xilinx ZynqMP

Cortex-A57	AMD Opteron A1100 Freescale QorIQ LS20xx Nvidia Tegra X1 Qualcomm Snapdragon 808, 810 Samsung Exynos 7

Cortex-A72	MediaTek Helio X20 Qualcomm Snapdragon 650, 652 HiSilicon Kirin 950

ARMv8-A compatible	Apple A7, A8, A8X, A9, A9X Applied Micro X-Gene Samsung Mongoose Cavium ThunderX CN87xx, CN88xx Nvidia Tegra K1 (Project Denver) Qualcomm Snapdragon 820 (Kryo)

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ARM Cortex-A72

Overview

See also

References

External links