Visible to Intel only — GUID: QSF-FAST_OUTPUT_ENABLE_REGISTER
Ixiasoft
Visible to Intel only — GUID: QSF-FAST_OUTPUT_ENABLE_REGISTER
Ixiasoft
FAST_OUTPUT_ENABLE_REGISTER
Implements an output enable register in a cell that has a fast, direct connection to an I/O pin. If such a fast, direct connection to the I/O pin is not available in the I/O cell hardware, this option instructs the Fitter to lock the output enable register in the LAB adjacent to the I/O cell it is feeding.Turning on the Fast Output Enable Register option can help maximize I/O timing performance, for example, by permitting fast clock-to-output times. Turning this option off for a particular signal prevents the Fitter from implementing the signal automatically in an I/O cell or locking down the output enable register in the LAB adjacent to the I/O cell. This option is ignored if it is applied to anything other than a register or an output or bidirectional pin fed by a register.
Type
Boolean
Device Support
- Intel Agilex® 5
- Intel Agilex® 7
- Arria® 10
- Cyclone® 10 GX
- Stratix® 10
Notes
This assignment supports Fitter wildcards.
Syntax
set_instance_assignment -name FAST_OUTPUT_ENABLE_REGISTER -to <to> -entity <entity name> <value>