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Arm launches second auto core
It has come up with a core called Cortex-A65AE designed to process the multiple streams of data generated by sensors in cars.
The core is expected to be in designs in 2020.
The A65AE is Arm’s second automotive-oriented core after the Cortex-A76AE which was launched in September.
Arm use a variation of the Big-Little processing concept in the auto cores.
When the data streams are at maximum flow, all processors on the chip can be utilised to process each of the different data flows, but when safety is the paramount consideration, the cores work together to perform the same operations simultaneously and act to double-check eachothers’ output.
Arm calls the concept ‘Split-Lock’ and describes the way it works like this:
’The pairs of locked cores execute the same instructions and automatically compare to each other to determine if an error has occurred. All of this happens on chip, cycle-by-cycle transparently to software. But if a fault occurs, the two cores can also be split for availability, isolating the fault and executing the code on the remaining core to gracefully exit the situation you are in. This could be driving slower or stopping at the side of the road.’
The core is expected to be in designs in 2020.
The A65AE is Arm’s second automotive-oriented core after the Cortex-A76AE which was launched in September.
Arm use a variation of the Big-Little processing concept in the auto cores.
When the data streams are at maximum flow, all processors on the chip can be utilised to process each of the different data flows, but when safety is the paramount consideration, the cores work together to perform the same operations simultaneously and act to double-check eachothers’ output.
Arm calls the concept ‘Split-Lock’ and describes the way it works like this:
’The pairs of locked cores execute the same instructions and automatically compare to each other to determine if an error has occurred. All of this happens on chip, cycle-by-cycle transparently to software. But if a fault occurs, the two cores can also be split for availability, isolating the fault and executing the code on the remaining core to gracefully exit the situation you are in. This could be driving slower or stopping at the side of the road.’