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JHill1's avatar
JHill1
Icon for Occasional Contributor rankOccasional Contributor
7 years ago

Can the PCI Express Hard IP support, not RP nor EP, but instead "Switch" Mode?

In our DSP board we can run our PCIe enumeration from NIOS2/RTEMS against a Root Port PCIe Hard IP in an upstream port, but would like to use the same hardware build in a downstream port exposing one...
Nooraini_Y_Intel's avatar
Nooraini_Y_Intel
Icon for Frequent Contributor rankFrequent Contributor
7 years ago

Hi Jhill1,

All the FPGA device PCIE HIP does not have the capability to be dynamically change between Root Port to End Point role and vice versa. The PCIe HIP must be configured and act as the Root Port (Host) in the system or must be configured and act as the End Point at a time after power up, enumerate and enter link active state. In the PCIe IP, you can only choose the option either Root Port or Native endpoint as the Port type. There is no such "switch" mode function or option that can be set in the PCIe IP.

Regards,

Nooraini