NCELAB complains about 'negative timing check'

Discussion in 'Cadence' started by wantcar, Jun 30, 2007.

  1. wantcar

    wantcar Guest

    Hello everyone there:

    I got the following error when using ncelab for the verilog file which
    contains timing information like this: $setup(negedge D, posedge CLK,
    tsetup_negedge $D$CLK, NOTIFIER); $hold(negedge D, posedge CLK,
    tsetup_negedge $D$CLK, NOTIFIER); but I got a bunch of warning like
    this:

    negative timing check limit not allowed in a 1 limit timing check

    Not sure what they mean and how to deal with them. Any input is
    appreciated!

    -Jerry
     
    wantcar, Jun 30, 2007
    #1
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