Device Family: Arria® V GT, Arria® V GX, Arria® V GZ, Arria® V ST, Arria® V SX, Cyclone® V, Cyclone® V E, Cyclone® V GT, Cyclone® V GX, Cyclone® V SE, Cyclone® V ST, Cyclone® V SX

Type: Answers

Area: EMIF, Intellectual Property

IP Product: DDR3 SDRAM Controller Supporting UniPHY

Error (175006): Could not find path between source global or regional clock driver and the HMC


You may see the above error when using the DDR3 Hard Memory Controller in a Cyclone® V device if the number of MPFE ports selected in the DDR3 IP GUI exceeds the number of ports supported by the device. IP Generation only takes into account the device family being used and not the specific device. Refer to the External Memory Interfaces in Cyclone V Devices chapter of the Cyclone V Handbook to determine the Number of MPFE Ports Per Device.


To fix this error, change the number of MPFE ports to a value that does not exceed the maximum number of ports supported for the device.