Intel® Quartus® Prime Pro Edition User Guide: Design Constraints
ID
683143
Date
9/26/2022
Public
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2.1.2.1. Specify Instance-Specific Constraints in Assignment Editor
2.1.2.2. Specifying Multi-Dimensional Bus Constraints
2.1.2.3. Specify I/O Constraints in Pin Planner
2.1.2.4. Plan Interface Constraints in Interface Planner and Tile Interface Planner
2.1.2.5. Adjust Constraints with the Chip Planner
2.1.2.6. Constraining Designs with the Design Partition Planner
4.2.5.1. Using Low-Level I/O Primitives
You can alternatively enter I/O pin assignments using low-level I/O primitives. You can assign pin locations, I/O standards, drive strengths, slew rates, and on-chip termination (OCT) value assignments. You can also use low-level differential I/O primitives to define both positive and negative pins of a differential pair in the HDL code for your design.
Primitive-based assignments do not appear in the Pin Planner until after you perform a full compilation and back-annotate pin assignments (Assignments > Back Annotate Assignments).
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