This processor is based on the second generation DynamIQ CPU, Cortex-A76 and comes with Split-Lock capability which includes Dual Core Lock-Step (DCLS), an advanced feature for increased fault tolerance designs.
The Cortex-A76AE is the first of an all new Arm Cortex-A family of high performance processors for the emerging smart automotive market and it is designed for devices undertaking complex and demanding safety critical tasks.
The Cortex-A76AE is part of the Arm Safety Ready program, a collection of products across the Arm portfolio that have been through various and rigorous levels of functional safety systematic flows and development.
|Neon / Floating Point Unit||Included|
|Max number of CPUs in cluster||Four (4)|
|Physical Addressing (PA)||40-bit|
|Memory system and external interfaces||L1 I-Cache / D-Cache||64KB|
|L2 Cache||128KB to 512KB|
|L3 Cache||Optional, 512KB to 4MB|
|Bus interfaces||AMBA ACE or CHI|
||Dual Core Lock-Step (DCLS)||Yes (in safety-mode)|
|Safety package||Yes (Extended package)|
|Other||Functional Safety Support||Supports ASIL D diagnostics|
|Interrupts||GIC interface, GICv4|
|Debug||Armv8-A (plus Armv8.2-A extensions)|
|Embedded Trace Macrocell||ETMv4.2 (instruction trace)|
Compare the specifications of Cortex-A Armv7-A and Armv8-A processors:
- Split-Lock capability which offers the flexibility to operate in two modes; split mode for performance and lock mode for safety.
- Fault-tolerant operation in lock mode with DCLS.
- 4x performance for inference machine learning at the edge.
Key features compared to Cortex-A75
- 40% better power efficiency per core.
- 35% improved performance per core.