AR #31399 - 10.1: Unisims, Simprims- DCM simulation models do not work when the input clock has jitter

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10.1: Unisims, Simprims- DCM simulation models do not work when the input clock has jitter

AR#	31399
Part	SW-Sim Libraries
Last Modified	2008-07-28 00:00:00.0
Status	Active
Keywords	DCM, Unisim, Simprim, Spartan, DCM_SP

Description

Keywords: DCM, Unisim, Simprim, Spartan, DCM_SP

The clock output from DCM is irregular when the input clock to the DCM simulation model has jitter. Why?

Solution

This is a limitation with the simulation model only. Even though the input clock jitter is within the specification, DCM simulation model will not be able to handle the input clock jitter stimulus when "clkout_phase_shift " is set to Variable.