The PCIe subsystems do not support the following features:
- Gen4 (16GT/s) operation
- 2-lane controller, configurable in 2x1 mode
- PCIe beacon for in-band wake
- Vendor Messaging
- I/O access in inbound direction in RP or EP mode
- Addressing modes other than incremental for burst transactions. As a result, the PCIe addresses cannot be in cacheable memory space.
- L2 power state
- Hot-plug
- Separate Reference Clock with
Independent Spread (SRIS)