The PCIE LTSSM State page shows the LTSSM state machine to the right of PCIE Design Hierarchy and under the lane status, as shown in the following figure.
Figure 1. LTSSM State Machine
When you click a PCIE instance in the PCIE Hierarchy, the active LTSSM state is retrieved from register LTSSM_STATE:PL_LTSSM_OUT, the active state is highlighted in the state machine, and the substate information is shown. The LTSSM state output is also logged in the SmartDebug log window. See the following figure.
Figure 2. Active State and Substate Information
