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Chapter 18: CPLDfit

CPLDfit Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299 CPLDfit Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 CPLDfit Input Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 CPLDfit Output Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 CPLDfit Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301

–blkfanin (Specify Maximum Fanin for Function Blocks) . . . . . . . . . . . . . . . . . . . . . . 301 –exhaust (Enable Exhaustive Fitting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 –ignoredatagate (Ignore DATA_GATE Attributes) . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 –ignoretspec (Ignore Timing Specifications) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 –init (Set Power Up Value) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 –inputs (Number of Inputs to Use During Optimization) . . . . . . . . . . . . . . . . . . . . . . 302 –iostd (Specify I/O Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 –keepio (Prevent Optimization of Unused Inputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 –loc (Keep Specified Location Constraints) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 –localfbk (Use Local Feedback) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 –log (Specify Log File) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 –nofbnand (Disable Use of Foldback NANDS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 –nogclkopt (Disable Global Clock Optimization) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 –nogsropt (Disable Global Set/Reset Optimization) . . . . . . . . . . . . . . . . . . . . . . . . . . 303 –nogtsopt (Disable Global Output-Enable Optimization) . . . . . . . . . . . . . . . . . . . . . . 303 –noisp (Turn Off Reserving ISP Pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 –nom1opt (Disable Multi-level Logic Optimization) . . . . . . . . . . . . . . . . . . . . . . . . . . 303 –nouim (Disable FASTConnect/UIM Optimization) . . . . . . . . . . . . . . . . . . . . . . . . . . 303 –ofmt (Specify Output Format) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 –optimize (Optimize Logic for Density or Speed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 –p (Specify Xilinx Part) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 –pinfbk (Use Pin Feedback) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 –power (Set Power Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 –pterms (Number of Pterms to Use During Optimization) . . . . . . . . . . . . . . . . . . . . . 304 –slew (Set Slew Rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 –terminate (Set to Termination Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 –unused (Set Termination Mode of Unused I/Os) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 –wysiwyg (Do Not Perform Optimization) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

Chapter 19: TSIM

TSIM Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

TSIM Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

TSIM Input Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308

TSIM Output Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308

Chapter 20: TAEngine

TAEngine Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309

TAEngine Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310

TAEngine Input Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310

TAEngine Output Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310

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Development System Reference Guide

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Xilinx 8.2i manual CPLDfit, Tsim, TAEngine

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.