Each PCIe subsystem supports the following main features:
- Compliance to
PCIe® Base Specification, Revision 4.0 (Version 0.7)
- 4-lane configuration with up to 8.0 Gbps/lane (Gen3). Can be used in 1x4, 1x2, 1x1 modes.
- Gen3 (8 Gbps 128/130-bit encoding), Gen2 (5 Gbps 8/10-bit encoding), and Gen1 (2.5 Gbps 8/10-bit encoding) with auto-negotiation
- 62.5/125/250MHz operation on PIPE interface for Gen1/Gen2/Gen3, respectively
- Constant 32-bit PIPE width for Gen1/2/3 modes
- Dynamic PIPE width change when switching between Gen1/2/3 modes
- Dual mode: Root Port (RP) or End Point (EP) operation modes
- Maximum payload size of 256 bytes
- Maximum remote read request size of 4K bytes
- Four virtual channels (VC)
- Four traffic classes (TC)
- PCI Power Management states are:
- L1 Active State Power Management
- L1 Power Management substates support
- D1 Device Power Management state
- Maximum number of non-posted outstanding transactions: 32
- Resizable BAR capability
- Separate Reference Clock with Independent Spread (SRIS)
- Legacy, MSI and MSI-X Interrupt Support
- 32 outbound address translation regions
- Precision time measurement (PTM)