Embedded System Considerations for Designing PCI Express Hot Plug Solutions
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PCI Express Hot Plug is a feature that can help embedded devices improve serviceability, flexibility, and the user experience. This paper discusses several design considerations to address these constraints while at the same time providing practical and reliable solutions for PCI Express Hot Plug in embedded systems. The successful handling of PCI Express Hot Plug is a system-level topic that involves proper configurations of BIOS settings, interrupts, as well as work partitioning among BIOS, OS, and driver. Incorrect implementation of PCI Express Hot Plug may compromise the safety and reliability of the products and may also induce error conditions.