set_load (SDC)

Sets the load to a specified value on a specified port.

set_load capacitance port_list

Arguments

capacitance

Specifies the capacitance value that must be set on the specified ports.

port_list

Specifies a list of ports in the current design on which the capacitance is to be set.

Supported Families

Fusion, ProASIC3/E, Axcelerator, eX, SX-A

Description

The load constraint enables the Designer software to account for external capacitance at a specified port. You cannot set load constraint on the nets. When you specify this constraint on the output ports, it impacts the delay calculation on the specified ports.

Examples

The following examples show how to set output capacitance on different output ports:

set_load  35   out_p

set_load  40   {O1 02}

set_load  25   [get_ports out]

Actel Implementation Specifics

• In SDC, you can use the set_load command to specify capacitance value on nets. Actel implementation only supports output ports.

See Also

Constraint support by family

Constraint entry table

SDC syntax conventions

set load on port