Link State Machine of PCI Express

  • S R
  • et al.
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PCI Express is a high-speed serial computer expansion bus standard with advance error reporting technology. It is the common motherboard interface for personal computers' graphics cards, hard drives, SSDs, Wi-Fi and Ethernet hardware connections. A link in PCIe is the communication path between transmitter and receiver. PCIe operates in all transaction, data link and physical layer. The link bring up in physical layer is essential for the link state machine to proceed further into data transfer state. This paper analyses the Link training and status state machine for the Detect, Polling, Configuration and Recovery states. The state analysis is simulated using the TS1 and TS2 packets transfer between Root Complex and End Point.




S, R., & Hiremath, S. (2020). Link State Machine of PCI Express. International Journal of Engineering and Advanced Technology, 9(4), 1371–1372.

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