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Cortex-A76 - Microarchitectures - ARM
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Cortex-A76 µarch
General Info
Arch TypeCPU
DesignerARM Holdings
ManufacturerTSMC
IntroductionMay 31, 2018
Process7 nm
Core Configs1, 2, 4
Pipeline
OoOEYes
SpeculativeYes
Reg RenamingYes
Stages11-13
Decode4-way
Instructions
ISAARMv8.2
ExtensionsFPU, NEON
Cache
L1I Cache64 KiB/core
4-way set associative
L1D Cache64 KiB/core
4-way set associative
L2 Cache256-512 KiB/core
8-way set associative
L3 Cache0-4 MiB/Cluster
Succession
Contemporary
Ares

Cortex-A76 (codename Enyo) is the successor to the Cortex-A75, a low-power high-performance ARM microarchitecture designed by ARM Holdings for the mobile market. This microarchitecture is designed as a synthesizable IP core and is sold to other semiconductor companies to be implemented in their own chips. The Cortex-A76, which implemented the ARMv8.2 ISA, is the a performant core which is often combined with a number of lower power cores (e.g. Cortex-A55) in a DynamIQ big.LITTLE configuration to achieve better energy/performance.

Process Technology

Though the Cortex-A76 may be fabricated on various different process nodes, it has been primarily designed for the 12 nm, 7 nm, and 5 nm process nodes.

Architecture

Key changes from Cortex-A75

Block Diagram

Typical SoC

cortex-a76 soc block diagram.svg

Individual Core

cortex-a76 block diagram.svg

Memory Hierarchy

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Overview

The Cortex-A76 is a high-performance synthesizable core designed by Arm as the successor to the Cortex-A75. It is delievered as Register Transfer Level (RTL) description in Verilog and is designed. This core supports the ARMv8.2 extension as well as a number of other partial extensions. The A76 is a 4-way superscalar out-of-order processor with a private level 1 and level 2 caches. It is designed to be implemented inside the DynamIQ Shared Unit (DSU) cluster along with other cores (e.g., with little cores such as the Cortex-A55)

Core

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Overview

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Pipeline

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Bibliography

  • Arm Tech Day, 2018
codenameCortex-A76 +
core count1 +, 2 + and 4 +
designerARM Holdings +
first launchedMay 31, 2018 +
full page namearm holdings/microarchitectures/cortex-a76 +
instance ofmicroarchitecture +
instruction set architectureARMv8.2 +
manufacturerTSMC +
microarchitecture typeCPU +
nameCortex-A76 +
pipeline stages (max)13 +
pipeline stages (min)11 +
process7 nm (0.007 μm, 7.0e-6 mm) +