set_false_path Constraint

set_false_path [-setup] [-hold] -from <start point> -through <names> -to <end point>

This command cuts paths unidirectionally:

• between clock domains
• from start or end points

Points can be a register or an I/O. If you do not specify a setup or hold, the tool cuts both setup and hold.

• -setup is the false path for setup analysis
• -hold is the false path for hold analysis
• -to the clock domain destination, I/O, or register end point
• -from the clock domain source, I/O, or register start point
• -through pins, cells or nets (see -through Option for supported use cases)
• <start point> is the the clock domain source, I/O, or register start point
• <end point> is the clock domain destination, I/O, or register end point
• <names> is a clock domain source/destination, I/O, or register start/end point