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ldm_as's avatar
ldm_as
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

"set_instance_assignment -name GLOBAL_SIGNAL OFF" -> what does it do?

Hello, What does the following attribute do: set_instance_assignment -name GLOBAL_SIGNAL OFF -to <signal_path> Is there a reason to apply this attribute to a reset line? Thank you!
Isaac_V_Intel's avatar
Isaac_V_Intel
Icon for Contributor rankContributor
6 years ago

Hello Dmitry,

A logic option that specifies whether the signal should be available throughout the device on the global routing paths. Global signals can be both pin- and logic-driven. Clock, output enable, register control, and memory control signals can be global signals. Turning on this option for a pin or a single-output logic function signal is equivalent to feeding the signal through a GLOBAL buffer. Turning off this option for a particular signal prevents any of the Auto Global options from using the signal as an automatic global signal.

Best regards,

Isaac.