SNLS685 December 2020 DS160PR412
The device is in normal operation with PCIe state machine enabled by RX_DET = L3 (float). This mode is recommended for PCIe use cases. In this mode PD pin is driven low in a system (for example by PCIe connector "PRSNT" signal). In this mode, the device redrives and equalizes PCIe RX or TX signals to provide better signal integrity.