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Attribute CLKIN_PERIOD (on DCM_CLKGEN_1) doesn't match PERIOD constraint? #5

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mithro opened this issue Jul 2, 2015 · 2 comments
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@mithro
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mithro commented Jul 2, 2015

WARNING:NgdBuild:1212 - User specified non-default attribute value (20.000000)
   was detected for the CLKIN_PERIOD attribute on DCM "DCM_CLKGEN_1".  This does
   not match the PERIOD constraint value (10 ns.).  The uncertainty calculation
   will use the non-default attribute value.  This could result in incorrect
   uncertainty calculated for DCM output clocks.
@enjoy-digital
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fixed by: 3256934

@mithro
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mithro commented Feb 3, 2016

This seems to again exist in our current firmware.

@mithro mithro closed this as completed Mar 27, 2016
mithro added a commit that referenced this issue Mar 4, 2017
mithro added a commit that referenced this issue Jan 15, 2018
arty/base and nexys_video/base: Fix ddr3 and reset
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