Visible to Intel only — GUID: QSF-FAST_INPUT_REGISTER
Ixiasoft
Visible to Intel only — GUID: QSF-FAST_INPUT_REGISTER
Ixiasoft
FAST_INPUT_REGISTER
Implements an input register in a cell that has a fast, direct connection from an I/O pin. If such a fast, direct connection from the I/O pin is not available on the I/O cell hardware, this option instructs the Fitter to lock the input register in the LAB adjacent to the I/O cell feeding it. Turning on the Fast Input Register option can help maximize I/O timing performance, for example, by permitting fast setup 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 input 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 input or bidirectional pin that feeds 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_INPUT_REGISTER -to <to> -entity <entity name> <value>