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Old 05-10-2006, 01:26 PM
srini
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Default Xilinx warning for DCM

Hi,
I am using a DCM in VirtexII which takes a 20 Mhz input and generates a
60 Mhz output.
I am synthesizing using Synplify Pro and using Xilinx ISE 7.1 for PAR.
After PAR, I am getting a warning that the CLKO output from the DCM is
less than 24 MHz. I know that the min. output freq. from the DCM should
be 24 Mhz. In my case, I am getting a 60 MHz output from the CLKFX pin
of the DCM and I am not using the CLKO pin. So, I would like to know
whether this warning will create some problem in the timing of the
clocks in the design.

Thanks & Regards,
Srini.

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