R

E

EDA

Electronic Design Automation (EDA). A generic name for all methods of entering and processing digital and analog designs for further processing, simulation, and implementation.

edge decoder

An edge decoder is a decoder whose placement is constrained to precise positions within a side of the FPGA device.

EDIF

EDIF is the Electronic Data Interchange Format, an industry standard file format for specifying a design netlist. It is generated by a third- party design-entry tool. In the Xilinx M1 flow, EDIF is the standard input format.

effort level

Effort level refers to how hard the Xilinx Design System (XDS) tries to place a design. The effort level settings are.

High, which provides the highest quality placement but requires the longest execution time. Use high effort on designs that do not route or do not meet your performance requirements.

Medium, which is the default effort level. It provides the best trade-off between execution time and high quality placement for most designs.

Low, which provides the fastest execution time and adequate placement results for prototyping of simple, easy-to-route designs. Low effort is useful if you are exploring a large design space and only need estimates of final performance.

ENRead

Mentor Graphics EDIF netlist reader. Translates an EDIF netlist into an EDDM single object.

entity

An entity is a set of interconnected components.

Development System Reference Guide

www.xilinx.com

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Xilinx 8.2i manual Eda, Edif

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.