Device Family: Intel® Stratix® 10

Intel Software: Quartus Prime Pro

Type: Answers

Area: Component


Version Found: v17.1
Bug ID: 1507221460

Error(18515): Attempted to route one dedicated refclk pin, xxx, to IOPLLs. In order to feed x IOPLLs, this signal must be promoted to a global clock.

Description

This error may be seen in the Intel® Quartus® Prime Pro Edition software version 17.1 and later when multiple IOPLLs are driven directly by one dedicated reference clock in Intel® Stratix® 10 devices.

Workaround/Fix

To avoid this error, promote the reference clock to a global clock with the folloing constraint in Quartus Settings File (.qsf).

set_instance_assignment -name GLOBAL_SIGNAL GLOBAL_CLOCK -to xxx