What is XDC file in Xilinx?

In Vivado, the constraints format is called Xilinx Design Constraints (XDC), which is a combination of the industry standard Synopsys® Design Constraints and proprietary Xilinx constraints. This is particularly powerful for defining, validating and debugging new constraints interactively in the design.

What is specified in the XDC file?

This file contains the constraints that your board places on designs using it – specific interfaces wired up to specific pins, clock frequencies, and FPGA bank voltages, for some examples. Click the dropdown below for a walkthrough of how to add this file to your project.

What are vivado constraints?

The Vivado IDE allows you to use one or many constraint files. While using a single constraint file for the entire compilation flow might seem more convenient, it can be a challenge to maintain all the constraints as the design becomes more complex.

What is constraint file in FPGA?

When programming an FPGA through software such as Xilinx’s Vivado, you need to inform the software what physical pins on the FPGA that you plan on using or connecting to in relation to the HDL code that you wrote to describe the behavior of the FPGA.

When does the Xilinx constraints guide come out?

Xilinx Constraints Guide (UG625) Constraints Guide UG625 (v . 14.5) April 1, 2013 This document applies to the following software versions: ISE Design Suite 14.5 through 14.7 For information relating to ISE Design Suite timing constraints, see the Timing Closure User Guide ﴾UG612﴿.

What does thefollowingtypographicalconventions mean in Xilinx constraints guide?

Thefollowingtypographicalconventionsareusedinthisdocument: Convention MeaningorUse Example Courier font Messages,prompts,andprogramfiles thatthesystemdisplays speed grade: – 100 Courier boldLiteralcommandsthatyouenterina syntacticalstatement

What’s the difference between Xilinx UCF and XDC?

The Xilinx®Vivado®Integrated Design Environment (IDE) uses Xilinx Design Constraints (XDC), and does not support the legacy User Constraints File (UCF) format. There are key differences between Xilinx Design Constraints (XDC) and User Constraints File (UCF) constraints.

How to store constraints in a XDC file?

• Store the constraints in one or more XDC files. To load the XDC file in memory, do one of the following: °Use the read_xdc command. °Add it to one of your project constraints sets. XDC files only accept the set, list, and expr built-in Tcl commands.