Real Time Processing Unit Reset - 2021.2 English

Zynq UltraScale+ MPSoC Software Developer Guide

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2021.2 English

Each Cortex®-R5F core can be independently reset. In lockstep mode, only the Cortex-R5F_0 needs to be reset to reset both Cortex-R5F cores. It can be triggered by errors or a software register write. The Cortex-R5F reset can be triggered due to a lockstep error to be able to reset and restart the RPU. It needs to gracefully terminate Cortex-R5F ingress and egress transactions before initiating reset of corresponding Cortex-R5F.