create_timing_netlist (::quartus::sta)

The following table displays information for the create_timing_netlist Tcl command:

Tcl Package and Version

Belongs to ::quartus::sta 1.0

Syntax create_timing_netlist [-h | -help] [-long_help] [-force_dat] [-grade <c|i|m|e|a> ] [-model <fast|slow> ] [-no_latch] [-post_map] [-snapshot <snapshot> ] [-speed <speed> ] [-temperature <value_in_C> ] [-voltage <value_in_mV> ] [-zero_ic_delays]
 
[ <operating_conditions> ]
Arguments -h | -help Short help
-long_help Long help with examples and possible return values
-force_dat Option to force delay annotation
-grade <c|i|m|e|a> Option to specify temperature grade
-model <fast|slow> Option to specify timing model
-no_latch Option to disable the analysis of latches as synchronous elements
-post_map Option to perform timing analysis on the post-synthesis netlist
-snapshot <snapshot> Snapshot of the design to load
-speed <speed> Speed grade
-temperature <value_in_C> Operating temperature
-voltage <value_in_mV> Operating voltage
-zero_ic_delays Option to set all IC delays to zero
<operating_conditions> Operating conditions Tcl object name string
Description
Creates the timing netlist by annotating the atom
netlist with delay information using post-fitting
results. 

Use the -post_map option to obtain post-synthesis
results. In an incremental compilation flow, after
Analysis and Synthesis, merge the partitions in your
design using the merge_partitions Tcl command (or the
quartus_cdb executable) to complete the creation of a
post-synthesis netlist before you use the -post_map
option to create a timing netlist.

In Quartus Prime Pro edition, you can use the -snapshot option
to specify which netlist you want to perform timing analysis on.

The create_timing_netlist command skips delay
annotation by default.  Use -force_dat to rerun delay
annotation. This is required if any delay annotation
setting is changed in the Quartus Prime project revision
(e.g. OUTPUT_PIN_LOAD).

Use "-model fast" to run the analysis using the fast
corner delay models first.  The -temperature,
-voltage, and -speed, options are also available. See
help for set_operating_conditions for details on these
options.

You can use model, temperature and voltage options to
specify operating conditions while creating timing
netlist (temperature and voltage options are not
supported by all families). You can also set operating
conditions by passing an operating conditions object
name as a positional argument to create_timing_netlist
command. After the timing netlist has been created,
you can use set_operating_conditions command to change
timing models without deleting and re-creating the
timing netlist.

Use the -grade option to analyze the design at a
different temperature grade. This option is provided
to support what-if analysis and is not recommended for
final sign-off analysis.

Use the -no_latch option to analyze latches as
combinational loops instead of synchronous elements.

Use the -zero_ic_delays option to set all IC delays in
the netlist to zero.
Example Usage
project_open my_top

# Create timing netlist before calling
# any report functions
create_timing_netlist

# Read SDC and update timing
read_sdc
update_timing_netlist

# Ready to call report functions
report_timing -npaths 1 -clock_setup

# The following command is optional
delete_timing_netlist

project_close

project_open my_top

# Report worst case period for -9 speed grade
create_timing_netlist -speed 9

# Read SDC and update timing
read_sdc
update_timing_netlist

report_timing -clock_setup -clock_filter clk
delete_timing_netlist

# Report hold violation for fastest corner
# Use set_operating_conditions instead
create_timing_netlist -model fast

# Read SDC and update timing
read_sdc
update_timing_netlist

report_timing -clock_hold -clock_filter clk
delete_timing_netlist

# If Delay Annotation has been run for the fast corner
# Force Delay Annotation
create_timing_netlist -model fast -force_dat

# Read SDC and update timing
read_sdc
update_timing_netlist

report_timing -clock_hold -clock_filter clk
delete_timing_netlist

# Report worst case period for post-technology mapping netlist
create_timing_netlist -post_map

# Read SDC and update timing
read_sdc
update_timing_netlist

report_timing -clock_setup -clock_filter clk
delete_timing_netlist

project_close
Return Value Code Name Code String Return
TCL_OK 0 INFO: Operation successful
TCL_ERROR 1 ERROR: The TCL command <string> is not supported in quartus_fit. It is only supported in quartus_sta. Please use quartus_sta instead of quartus_fit if you want to use this TCL command.
TCL_ERROR 1 ERROR: Can't create timing netlist for device family <string>. Run Analysis and Synthesis (quartus_map) using this device family as a value for the --family option before running the TimeQuest analyzer (create_timing_netlist).
TCL_ERROR 1 ERROR: The Fast Forward snapshot cannot be used for sign-off timing analysis. Please see the Fast Forward Timing Closure Recommendations report for performance estimates.
TCL_ERROR 1 ERROR: Can't run TimeQuest Timing Analyzer (quartus_sta) -- Periphery placement (quartus_fit --plan) failed or was not run. Run I/O Assignment Analysis (quartus_fit --plan) successfully before running the TimeQuest analyzer (create_timing_netlist -post_map).
TCL_ERROR 1 ERROR: Invalid snapshot <string>. Available snapshot(s): <string>
TCL_ERROR 1 ERROR: Both the -temperature and -voltage options and their values are required.
TCL_ERROR 1 ERROR: Can't find active revision. Make sure there is an open, active revision name.
TCL_ERROR 1 ERROR: Could not find the <string> timing netlist on disk. Please run this fitter stage first, and make sure you have enabled Optimize Timing in Advanced Fitter Settings.
TCL_ERROR 1 ERROR: Option -no_latch is not supported for the current family.
TCL_ERROR 1 ERROR: Values entered did not match any valid operating conditions. Available operating conditions are: <string>
TCL_ERROR 1 ERROR: The <string> device family cannot perform automatic multi-corner timing analysis because the family does not support the set_operating_conditions command.
TCL_ERROR 1 ERROR: <string> Device family is not supported by the TimeQuest Timing Analyzer.
TCL_ERROR 1 ERROR: Illegal value: <string>. Specify an integer ranging from -999999999 to 999999999 for the option -voltage
TCL_ERROR 1 ERROR: The design has not been fully routed. If you want to perform Timing Analysis on an earlier netlist please choose which snapshot to load for analysis. Available snapshot(s): <string>
TCL_ERROR 1 ERROR: The design has not been fully routed and retimed to optimize timing. If you want to perform Timing Analysis on an earlier netlist please choose which snapshot to load for analysis. Available snapshot(s): <string>
TCL_ERROR 1 ERROR: Can't create timing netlist with -post_map option for device family <string>. Create timing netlist without the -post_map OPTION
TCL_ERROR 1 ERROR: Can't create timing netlist with -post_map option for device family <string>. Run I/O Assignment Analysis (quartus_fit --plan) successfully before running the TimeQuest Timing Analyzer (create_timing_netlist -post_map).
TCL_ERROR 1 ERROR: Use of --post_map and --post_fpp options are not allowed in hierarchical mode. You can use --snapshot to specify the database to be used for analysis
TCL_ERROR 1 ERROR: Can't run TimeQuest Timing Analyzer (quartus_sta) -- Fitter (quartus_fit) failed or was not run. Run the Fitter (quartus_fit) successfully before running the TimeQuest analyzer (create_timing_netlist).
TCL_ERROR 1 ERROR: Can't run the TimeQuest Timing Analyzer (quartus_sta) -- Partition Merge (quartus_cdb --merge) failed or was not run. Run the Partition Merge (quartus_cdb --merge) successfully before running the TimeQuest Timing Analyzer (create_timing_netlist -post_map).
TCL_ERROR 1 ERROR: Can't run TimeQuest Timing Analyzer (quartus_sta) -- Analysis and Synthesis (quartus_map) failed or was not run. Run Analysis and Synthesis (quartus_map) successfully before running the TimeQuest analyzer (create_timing_netlist -post_map).
TCL_ERROR 1 ERROR: Delay annotation not run. Run delay annotation before running the Timing Analyzer (quartus_sta).
TCL_ERROR 1 ERROR: You can only specify the -snapshot option when Hierarchical Design is enabled.
TCL_ERROR 1 ERROR: Pre-fit timing analysis is not supported for the specified corner. Please use the <string>.
TCL_ERROR 1 ERROR: Timing netlist already exists. Delete the timing netlist before running this command.
TCL_ERROR 1 ERROR: Unsupported option: <string>.