ID 683796
Date 9/24/2018
Public

## 2.8.4.2. set_input_delay

This port-specific input delay constraint is specified in the Precision Synthesis software.

### Specifying set_input_delay

set_input_delay {<delay_value> <port_pin_list>} \
-clock <clock_name> -rise -fall -add_delay

This constraint is mapped to the set_input_delay setting in the Intel® Quartus® Prime software.

When the reference clock <clock_name> is not specified, all clocks are assumed to be the reference clocks for this assignment. The input pin name for the assignment can be an input pin name of a time group. The software can use the clock_fall option to specify delay relative to the falling edge of the clock.

Note: Although the Precision Synthesis software allows you to set input delays on pins inside the design, these constraints are not sent to the Intel® Quartus® Prime software, and a message is displayed.