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xilinx sstl15 ibis doesn't meet micron ddr3

Question asked by xilinx.moshi on Oct 6, 2014
Latest reply on Oct 9, 2014 by agxinmj

I'm simulating a circuit with virtex-6 fpga and micron ddr3, the problem is the sstl15_dci_o standard in xilinx ibis doesn't meet the vcross_high and vcross_low in the micron  ibis. so when i connect these two, I always get a failed "differential crossover limits" for my dqs signal.

can anyone help me please?