问答 #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

问答编号#	31399
型号	SW-Sim Libraries
最后更新日期	2008-07-28 00:00:00.0
记录状态	Active
关键词	DCM, Unisim, Simprim, Spartan, DCM_SP

疑问描述

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?

解决方案

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.