Author: System on Chips

Issue Overview: The Role and Necessity of DBIDRespOrd in ARM CHI Protocol The ARM Coherent Hub Interface (CHI) protocol is a critical component in modern ARM-based systems, enabling efficient communication between processors, caches, and memory controllers. Within this protocol, the DBIDResp and DBIDRespOrd transactions play pivotal roles in managing data flow and maintaining coherency. However,…

Issue Overview: Second Core Receives Only One PL Interrupt in AMP Configuration In a Zynq 7020 Cortex-A9 Asymmetric Multiprocessing (AMP) setup, where each core runs a separate FreeRTOS instance, a critical issue arises with the second core’s ability to handle interrupts from Programmable Logic (PL)-based IPs. The second core initializes correctly, waits for the first…