Mentor v8.6_4 manual ∙ -CEllcellname

Add Cone Blocks Command Dictionary

∙-Effect

An optional switch specifying that the cone blockage point is only for the effect cone calculation.

∙-CEllcell_name

An optional switch and string pair that specify the name of a DFT library cell at whose pin_pathnames you want the tool to place clock cone block points.

Examples

The following example shows a clock that fails on the C3 rule, which says that the clock input of a scan latch is in both the clock and effect cone. If you know that it will not cause a problem downstream, you can change the blockage point the tool uses for the clock cone (or effect cone) and allow that element to pass through the rules checker.

// ----------------------------------------------------------

//Begin scan clock rules checking.

//----------------------------------------------------------

//5 scan clock/set/reset lines have been identified.

//All scan clocks successfully passed off-state check.

//All scan clocks successfully passed capture ability check.

//Error: Clock /clk failed rule C3 on input 7 of /LS0 (83).

//Source of violation: input 7 of /LS0 (83).

//Error: Rules checking unsuccessful, cannot exit SETUP mode.

add cone blocks /ls0/q -clock report cone blocks

clock /LS0/Q

set system mode atpg

...

Related Commands

Delete Cone Blocks Report Cone Blocks

2-50 FastScan and FlexTest Reference Manual, V8.6_4