Development System Reference Guide 233

	R					TRACE Reports
						TRACE Reports

	Setup/Hold to clock clk
	---------------	+	------------	+	------------	+
			Setup to		Hold to
	Source Pad	clk (edge) clk (edge)
	---------------	+	------------	+	------------	+
	ad0		0.263(R)		0.555(R)
	ad1		0.263(R)		0.555(R)
	ad10		0.263(R)		0.555(R)
	ad11		0.263(R)		0.555(R)
	ad12		0.263(R)		0.555(R)
	ad13		0.263(R)		0.555(R)
.
.
.
	---------------	+	------------	+	------------	+
	Clock clk to Pad
	---------------	+	------------	+
		clk (edge)
	Destination Pad		to PAD
	---------------	+	------------	+
	d0		7.496(R)
	---------------	+	------------	+
	Timing summary:
---------------
	Timing errors:	1	Score: 63

Constraints cover 19 paths, 0 nets, and 21 connections (100.0% coverage)

Design statistics:

Maximum path delay from/to any node: 6.063ns

Maximum input arrival time after clock: 8.593ns

Analysis completed Wed Mar 8 14:54:31 2005

------------------------------------------------------------------

When the physical constraints file includes timing constraints, the summary report lists the percentage of all design connections covered by timing constraints. If there are no timing constraints, the report shows 100% coverage. An asterisk (*) precedes constraints that fail.

Error Report

The error report lists timing errors and associated net and path delay information. Errors are ordered by constraint in the PCF and within constraints, by slack (the difference between the constraint and the analyzed value, with a negative slack showing an error condition). The maximum number of errors listed for each constraint is set by the limit you enter on the command line. The error report also contains a list of all time groups defined in the PCF and all of the members defined within each group.

The main body of the error report lists all timing constraints as they appear in the input PCF. If the constraint is met, the report states the number of items scored by TRACE, reports no timing errors detected, and issues a brief report line, showing important information (for example, the maximum delay for the particular constraint). If the constraint is not met, it gives the number of items scored by TRACE, the number of errors encountered, and a detailed breakdown of the error.

Development System Reference Guide

www.xilinx.com

233 8.2i specifications

Xilinx 8.2i is a significant version of the Xilinx ISE (Integrated Software Environment) that emerged in the early 2000s, marking an important milestone in the world of FPGA (Field-Programmable Gate Array) development. This version introduced a slew of advanced features, technologies, and characteristics that made it an indispensable tool for engineers and developers in designing, simulating, and implementing digital circuits.

One of the standout features of Xilinx 8.2i is its enhanced design entry capabilities. This version supports multiple design entry methods, including schematic entry, VHDL, and Verilog HDL, giving engineers the flexibility to choose their preferred approach. The integrated environment provides user-friendly graphical interfaces, making it accessible for both novice and experienced users.

Xilinx 8.2i's synthesis tools have been improved to enable more efficient design compilation and optimization. The new algorithms used in this version facilitate faster synthesis times while reducing power consumption and improving performance. Furthermore, it features support for advanced FPGA architectures, which allows for the implementation of more complex designs with greater efficiency.

The implementation tools in Xilinx 8.2i include advanced place and route capabilities, utilizing state-of-the-art algorithms for optimized resource usage. These tools enable designers to make better use of FPGA resources, ensuring that designs fit within the constraints of the target device while maximizing performance.

Another key characteristic of Xilinx 8.2i is its extensive support for various Xilinx devices such as the Spartan, Virtex, and CoolRunner series. This compatibility ensures that developers can leverage the powerful features of these FPGA families, including high-speed transceivers and DSP slices.

Xilinx 8.2i also places a strong emphasis on simulation and verification. The version integrates with various simulation tools, allowing for thorough testing of the designs before implementation. This reduces the risk of errors and ensures that the final product meets specifications.

In addition, this version includes support for design constraints, enabling engineers to specify timing, area, and other critical design parameters. By accommodating constraints, Xilinx 8.2i helps in achieving reliable and efficient designs tailored to project needs.

In summary, Xilinx 8.2i is a robust software development tool that enhances the design process for FPGAs. Its comprehensive features, including multiple design entry options, advanced synthesis and implementation tools, extensive device support, and strong simulation capabilities, make it a valuable resource for engineers and developers striving for innovation in digital design.

Xilinx 8.2i manual Development System Reference Guide 233

Models: 8.2i

TRACE Reports

Error Report

Development System Reference Guide

233

8.2i specifications