Visible to Intel only — GUID: reference_TCL_tcl_pkg_sdc_ver_1_5_cmd_derive_clocks
Ixiasoft
Visible to Intel only — GUID: reference_TCL_tcl_pkg_sdc_ver_1_5_cmd_derive_clocks
Ixiasoft
3.1.27.7. derive_clocks (::quartus::sdc)
The following table displays information for the derive_clocks Tcl command:
Tcl Package and Version | Belongs to ::quartus::sdc |
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Syntax | derive_clocks [-h | -help] [-long_help] -period <period_value> [-waveform <edge_list> ] | ||
Arguments | -h | -help | Short help | |
-long_help | Long help with examples and possible return values | ||
-period <period_value> | Speed of the default clock in terms of clock period | ||
-waveform <edge_list> | List of edge values | ||
Description | Creates a clock on sources of clock pins in the design that do not already have at least one clock sourcing the clock pin. This command is equivalent to calling create_clock on each clock source in the design that does not already have a clock assigned to it. See the help for create_clock for more information. Intel does not recommend using this command during final sign-off analysis of a design. derive_clocks should only be used early in the design phase when the clocks are not completely known. When possible, create_clock and create_generated_clock should be used instead. |
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Example Usage | |
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Return Value | Code Name | Code | String Return |
TCL_OK | 0 | INFO: Operation successful |