Chapter 5

Design Constraints

This chapter describes constraints, options, and attributes supported for use with XST.

This chapter contains the following sections.

• "Introduction"
• "Setting Global Constraints and Options"
• "XST Constraints"
• "HDL Inference and Optimization"
• "FPGA Options"
• "CPLD Options"
• "Summary"
• "Implementation Constraints"
• "Third Party Constraints"
• "Constraints Precedence"