Peripheral Component Interconnect Express

Background

An overview of the PCI bus model is presented as a foundational step toward understanding the PCIe architecture. PCI and PCI-X are introduced, and their key features and characteristics are discussed in detail.

PCIe (Peripheral Component Interconnect Express) is a high-speed interface standard used to connect various hardware components, such as graphics cards, SSDs, and network cards, to a computer's motherboard. It supports scalable lanes (x1, x4, x8, x16) for faster data transfer, offering low latency and high bandwidth, making it ideal for modern computing and high-performance applications.

Architecture Overview

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Configuration Overview

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Datalink Layer

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Physical Layer

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Additional Topics

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Address Space

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Tx Routing

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Transaction Layer

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