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PCIe facilitates the connection between two devices and is responsible for smooth data exchange between them. To handle the transfer mechanism appropriately PCIe has 3 layers, which are Transaction layer, Data link layer, and Physical layer. The Data link layer is the intermediate layer, which supervises link management, data integrity of packets in transmission and re-transmission.
For years PCIe has served as a standard for interconnects being widely accepted throughout the industry. This piece of writing aims to showcase the working of the PCIe Gen5 Data Link Layer, guarding data exchange between the components on a link.
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