wartwo
Newbie level 4

ignored cell on vcs
My design run with VCS 7.0 report toggle rate is 0. The cm.log message is following :
Starting toggle coverage for module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM
: Starting toggle coverage for module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top
: Starting toggle coverage for module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top.dainterpolation_inst
: Starting toggle coverage for module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top.dainterpolation_inst.udafir
: Module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top.dainterpolation_inst.udafir.U4 is ignored. skipping to next module...
: Module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top.dainterpolation_inst.udafir.U3 is ignored. skipping to next module...
All the cell is ignored. So the toggle rate is 0.
Please tell me why the cell is ignored.
Note : fsm/cond/line coverage report is not 0. Only toggle rate report is 0.
My design run with VCS 7.0 report toggle rate is 0. The cm.log message is following :
Starting toggle coverage for module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM
: Starting toggle coverage for module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top
: Starting toggle coverage for module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top.dainterpolation_inst
: Starting toggle coverage for module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top.dainterpolation_inst.udafir
: Module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top.dainterpolation_inst.udafir.U4 is ignored. skipping to next module...
: Module RM5012_SIM_TOP.RM5012.TOP.RM5012_TOP_ROM.u_dafilter_top.dainterpolation_inst.udafir.U3 is ignored. skipping to next module...
All the cell is ignored. So the toggle rate is 0.
Please tell me why the cell is ignored.
Note : fsm/cond/line coverage report is not 0. Only toggle rate report is 0.