SDF Generation Confusion

Hi,

I have been given some SDF that has been generated for min/max

write_sdf ../SDF/func.sdf      -precision 6 -max_view func_worst  -min_view func_best

 When I look in the SDF file, I see:

    (CELL
    (CELLTYPE  "SDFFRX1")
    (INSTANCE  instname)
      (DELAY
    (ABSOLUTE
    (IOPATH RN Q  () (0.445556::1.320084))
    (IOPATH RN QN  (0.282808::0.854712) ())
    (IOPATH (posedge CK) Q  (0.555220::1.656612) (0.407100::1.234008))
    (IOPATH (posedge CK) QN  (0.245180::0.769608) (0.303232::0.970056))
    )
      )
      (TIMINGCHECK
    (WIDTH (negedge RN) (::0.482700))
    (WIDTH (posedge CK) (::0.356600))
    (WIDTH (negedge CK) (::0.502200))
    (PERIOD (posedge CK) (::1.000000))
    (PERIOD (negedge CK) (::1.000000))
    (SETUPHOLD (posedge D) (posedge CK) (::0.351500) (-0.094300::))
    (SETUPHOLD (negedge D) (posedge CK) (::1.047800) (-0.297200::))
    (RECREM (posedge RN) (posedge CK) (::0.381600) (-0.049500::))
    (SETUPHOLD (posedge SE) (posedge CK) (::1.057100) (-0.088100::))
    (SETUPHOLD (negedge SE) (posedge CK) (::0.964600) (-0.146400::))
    (SETUPHOLD (posedge SI) (posedge CK) (::0.389800) (-0.107100::))
    (SETUPHOLD (negedge SI) (posedge CK) (::1.007200) (-0.292000::))
      )
  )

i.e. The MIN/MAX triplets are present for the IOPATHS, but for SETUPHOLD I see only max for setup and min for hold.

I think that this is giving problems in post layout gate level simulation (ncsim) where I use TOOL_CONTROL and +maxdelays. In this case, when I run a max simulation, no hold value will be annotated, so I see timing issues (since actual hold time is negative).

 I hope someone understands what I'm talking about ;-)

Can anyone provide a solution.

Thanks,

Steven