Altera Quartus II Scripting - Manual (Page 143)

Chapter 3: Tcl Packages & Commands 3–13
advanced_timing
© July 2013 Altera Corporation Quartus II Scripting Reference Manual
get_clock_delay_path
Usage
get_clock_delay_path -from -to -type
Options
-from : Source node
-to : Destination node
-type : Longest or shortest path
Description
Returns a list of all nodes in the path between clock node and keeper.
A keeper is a node of the type pin, register, or clock.
Example
# Print the longest paths from source clock
# to destination register pairs
load_package advanced_timing
project_open
create_timing_netlist
create_p2p_delays
foreach_in_collection node [get_timing_nodes -type reg] {
set reg_name [get_timing_node_info -info name $node]
set delays_from_clock [get_delays_from_clocks $node]
puts "register $reg_name has longest paths from clocks:"
foreach delay $delays_from_clock {
set src_node [lindex $delay 0]
puts "-> clock is [get_timing_node_info -info name $src_node]"
set path \
[get_clock_delay_path -type longest -from $src_node -to $node]
foreach el $path {
puts "--> node is [get_timing_node_info -info name \
[lindex $el 0]]"
puts "--> delay is [lindex $el 1]"
}
}
}
project_close