Altera Quartus II Scripting - Manual (Page 446)

3–316 Chapter 3: Tcl Packages & Commands
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Quartus II Scripting Reference Manual © July 2013 Altera Corporation
The -rise_to and -fall_to options behave similarly to the "from1" options described previously. These
assignments restrict the given assignment to only those nodes or clocks that correspond to the specified
rise or fall value taking into consideration any logical inversions that are along the clock path.
The values of the -from, -to, -through, and other similar options are either collections or a Tcl list of
wildcards used to create collections of appropriate types. The values used must follow standard Tcl or
TimeQuest-extension substitution rules. See help for the use_timequest_style_escaping command for
details.
Example
# Apply a 10ns max delay between two unrelated clocks
set_max_delay -from [get_clocks clkA] -to [get_clocks clkB] 10.000
# Apply a 2ns max delay for an input port (TSU)
set_max_delay -from [get_ports in[*]] -to [get_registers *] 2.000
# Apply a 2ns max delay for an output port (TCO)
set_max_delay -from [get_registers *] -to [get_ports out[*]] 2.000
# Apply a 2ns max delay for an input port to an output port (TPD)
set_max_delay -from [get_ports in[*]] -to [get_ports out[*]] 2.000
# Apply a 2ns max delay for an input port only to nodes driven by
# the rising edge of clock CLK
set_max_delay -from [get_ports in[*]] -rise_to [get_clocks CLK] 2.000