The X3522 low latency network adapter supports both in-band and out-of-band communication with the host.
In-band communication is provided by PCIe bus with eight lanes allocated to the XCUX35. In addition, in-band communication with the management subsystem, particularly reading any sensor values, is done via the satellite microcontroller on board the NIC. The sensor values can be read using the sensors command from the lm_sensors package in your Linux distribution.
For out-of-band communications, the platform management subsystem on the NIC uses Platform Management Components Intercommunication (PMCI) conformance standards and command implementations. Adapter manageability is supported through the platform level data model (PLDM) and network controller sideband interface (NC‐SI) specifications. Limited manageability is also available through the unified extensible firmware interface (UEFI) and command line processing (CLP) interfaces.
- MCTP SMBus
- MCTP PCIe VDM