3606 - LatticeECP3: Can we change the DEVSEL parameter to SLOW for the PCIe IP (Peripheral Component Interconnect Express) configuration space?
No, the PCIe (Peripheral Component Interconnect Express) base specification clearly says that the DEVSEL TIMING parameter does not apply to PCIe Express Configuration space and is hardwired 0 by default. This means the DEVSEL TIMING parameter is hardwired to FAST mode.