Type Block GND Xstgnd | Xilinx 8.2i manual

Chapter 7: MAP

Table of Contents

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Section 1 - Errors Section 2 - Warnings Section 3 - Informational Section 4 - Removed Logic Summary Section 5 - Removed Logic Section 6 - IOB Properties Section 7 - RPMs

Section 8 - Guide Report Section 9 - Area Group Summary Section 10 - Modular Design Summary Section 11 - Timing Report

Section 12 - Configuration String Information Section 13 - Additional Device Resource Counts

Section 1 - Errors

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Section 2 - Warnings

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WARNING:LIT - Logical network Inst_dcm1_CLKIN_IBUFG_OUT has no load. WARNING:LIT - The above warning message base_net_load_rule is repeated

1 more time for the following:

To see the details of these warning messages, please use the -detail switch.

Section 3 - Informational

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INFO:MapLib:562 - No environment variables are currently set. INFO:LIT:244 - All of the single ended outputs in this design are using slew rate limited output drivers. The delay on speed critical single ended outputs can be dramatically reduced by designating them as fast outputs in the schematic.

Section 4 - Removed Logic Summary

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1 block(s) removed

2 block(s) optimized away

Section 5 - Removed Logic

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Unused block "xcounter/VCC" (ONE) removed.

Optimized Block(s):

TYPE	BLOCK
GND	XST_GND
GND	xcounter/GND

To enable printing of redundant blocks removed and signals merged, set the

detailed map report option and rerun map.

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Development System Reference Guide

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 Type Block GND Xstgnd

Models: 8.2i

Chapter 7: MAP

TYPE

BLOCK

GND

XST_GND

Development System Reference Guide

8.2i specifications