Error: Could not find a location with: OCT_CAL_BLOCK_ID

Description

When compiling a design with multiple UniPHY-based DDR2 or DDR3 memory controllers in the Quartus® II software version 12.1, you may experience the following error:

Error : Illegal constraint of pin to the region (X1, Y1) to (X2, Y2): no valid locations in region

Info : The pin name: mem_ck

Info : The I/O pad is constrained to the location PIN_NUM due to: User Location Constraints (PIN_NUM)

Error: Could not find a location with: OCT_CAL_BLOCK_ID of 2 (1 location affected)

Info: pin containing PIN_NUM

The error is generated because the mem_ck pin is assigned to the wrong OCT termination control block.

Resolution

The workaround is to add the following termination control block assignment to the QSF file or Assignment Editor:

 

set_instance_assignment -name TERMINATION_CONTROL_BLOCK “<hierarchy>|altera_mem_if_oct_stratixv:oct0|sd1a_0" -to mem_ck*

 

This issue has been fixed in the Quartus® II software 14.1 version.

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