ALTPLL megafunction: Warning (15567): Can't achieve requested Medium bandwidth type; current PLL requires a bandwidth value of between 0.500 Mhz and 2.000 Mhz -- achieved bandwidth of 1.98 MHz to 2.97 MHz

Description

On the Bandwidth/SS page of the Parameter Setting tab of the ALTPLL MegaWizard Plug-In Manager, if you select Auto under How would you like to specify the bandwidth setting?, during compilation the Quartus II software might generate a message similar to the following:

Warning (15567): Can't achieve requested Medium bandwidth type; current PLL requires a bandwidth value of between 0.500 Mhz and 2.000 Mhz -- achieved bandwidth of 1.98 MHz to 2.97 MHz.

The Quartus II software generates this message even though you did not request a Medium bandwidth type.

Resolution

You may safely ignore this message.