Chapter 12: TRACE

R

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Total

5.224ns (1.835ns logic,

3.389ns route)

 

 

(35.1% logic, 64.9% route)

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Minimum Period Statistics

The Timing takes into account paths that are in a FROM:TO constraints but the minimum period value does not account for the extra time allowed by multi-cycle constraints.

An example of how the Minimum Period Statistics are calculated. This number is calculated assuming all paths are single cycle.

Example:

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Design statistics:

Minimum period: 30.008ns (Maximum frequency: 33.324MHz)

Maximum combinational path delay: 42.187ns

Maximum path delay from/to any node: 31.026ns

Minimum input arrival time before clock: 12.680ns

Maximum output required time before clock: 43.970ns

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Halting TRACE

To halt TRACE, enter Ctrl+C (on a workstation) or Ctrl-BREAK (on a PC). On a workstation, make sure that when you enter Ctrl+C, the active window is the window from which you invoked TRACE. The program prompts you to confirm the interrupt. Some files may be left when TRACE is halted (for example, a TRACE report file or a physical constraints file), but these files may be discarded because they represent an incomplete operation.

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Xilinx 8.2i manual Halting Trace, Minimum Period Statistics
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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.
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