Knowledge Base Article

Why does the Quartus II software not issue a warning message concerning jitter when a PLL is not driven by its dedicated clock input pin for an Arria V device?

Description

Due to a bug, current versions of the Quartus® II software will not issue a warning message concerning jitter when a PLL is not driven by its dedicated clock input pin.

Resolution

The warning that you should receive in the Quartus II software is:

Warning (15055): PLL "<PLL Name>" input clock inclk[0] is not fully compensated and may have reduced jitter performance because it is fed by a non-dedicated input

This issue is scheduled to be fixed in a future release of Quartus II software.

Updated 3 months ago
Version 2.0
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