SNLA415 August   2022 DS160PT801

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2History
  5. 3Components of PCIe Communication
    1. 3.1 Root Complex
    2. 3.2 Repeater
    3. 3.3 Endpoints
  6. 4Signaling
    1. 4.1 PERST
    2. 4.2 WAKE and CLKREQ
    3. 4.3 REFCLK
  7. 5Link Training
    1. 5.1 Receiver Detect (Rx Detect)
    2. 5.2 Polling
    3. 5.3 Configuration
  8. 6Link Equalization
    1. 6.1 Phase 0 and 1
    2. 6.2 Phase 2 and 3
  9. 7Summary
  10. 8References

3.3 Endpoints

An endpoint is a general term for a PCIe end component. This could represent many different types of PCIe devices such as M.2 solid state drive (SSD) or graphics processing unit (GPU). It could be either a PCIe component or a PCI component with PCIe to PCI/PCI-X bridge. Figure 3-1 shows it as light blue box and gray box that is connected to either bridge, switch, or repeater and is referred as either "PCIe Endpoint" or "PCI Endpoint."