Use command to instruct timing software to check for hold at desired
clock-edge (
desired hold
)
Example
:
primetime
commands for 3-cycle path
Define 3-cycle path for setup calculation
set_multicycle_path –setup 3 –from launch/clk –to capture/D
Request for checking "hold"
2 cycles earlier
than the implied holds
set_multicycle_path
–hold 2
–from launch/clk –to capture/D
Chapter 5: Timing Analysis and Optimization
5-33
clk
capture
clk
launch
Desired
hold
Setup
0
1
2
3
Implied hold
