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Chapter 4: Detailed Example Design

If the core was generated with the Full System Hardware Evaluation or the Full license, the implementation script is present and performs the following steps:

1.Synthesizes the example design using the selected synthesis tool (XST or Synplify).

2.Runs ngdbuild to consolidate the core netlists, wrapper netlist, and constraints file into the common database.

3.Runs map to perform technology specific mapping of the design.

4.Runs par to perform place and route of the design.

5.Runs trce to perform static timing analysis of the routed design.

6.Runs bitgen to generate a bitstream for download to the target FPGA.

7.Runs netgen to generate a post-par simulation model for use in timing simulation.

Simulation Script Details

The simulation scripts for ModelSim and NCSIM that simulate the demonstration test bench are located in one of the following directories:

<proj_dir>/<component_name>/simulation/{functional timing }/

For functional simulation, the simulation script performs the following tasks:

1.Compiles the simulation models provided with the core.

2.Compiles the loopback example design.

3.Compiles the wrapper file, which instantiates the cores and the loopback.

4.Compiles the demonstration test bench.

5.Starts a simulation of the demonstration test bench.

6.Opens the waveform viewer and adds key signals (wave_mti.dowave_ncsim.sv).

7.Runs the simulation.

For timing simulation, the simulation script performs the following tasks:

1.Compiles the post-par design example, which includes the cores and the loopback.

2.Compiles the demonstration test bench.

3.Starts a simulation of the demonstration test bench.

4.Opens the waveform viewer and adds key signals (wave_mti.dowave_ncsim.sv).

5.Runs the simulation.

Example Design Configuration

In the example design, a Loopback Module is connected to the user interface of the SPI-4.2 core. Typically, the user interface would be connected directly to the design. The SPI-4.2 Interface, which is the interface defined by the OIF-SPI4-02.1specification, typically

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SPI-4.2 v8.5 Getting Started Guide

 

 

UG154 March 24, 2008

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Xilinx UG154 manual Example Design Configuration, Simulation Script Details
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UG154 specifications

Xilinx UG154 is a comprehensive user guide that provides in-depth information about the architecture, features, and technologies of Xilinx's FPGA (Field Programmable Gate Array) devices. This guide is particularly vital for developers, engineers, and designers who work with Xilinx products, as it serves as a key resource throughout the development lifecycle.

One of the main features of Xilinx UG154 is its coverage of the device architecture, which details the programmable logic cells, configurable interconnects, and I/O capabilities. Xilinx FPGAs are known for their flexibility and scalability, allowing designers to implement complex digital circuits and systems that can be modified post-manufacturing, enabling rapid prototyping and iterative design processes.

Another key aspect highlighted in UG154 is the technological advancements in the latest Xilinx architectures, such as UltraScale and UltraScale+. These architectures incorporate advanced process technologies, providing improved performance and power efficiency. High-speed serial transceivers, embedded processing capabilities, and extensive memory options are also discussed, showcasing how these features enhance system integration and reduce design time.

The guide also delves into Xilinx's software ecosystem, featuring the Vivado Design Suite, which streamlines the design process through integrated design tools and a unified development environment. The Vivado suite supports various high-level synthesis, simulation, and analysis tools, facilitating a smoother transition from concept to implementation.

In addition to hardware and software integration, UG154 covers the importance of IP cores, which are pre-designed functional blocks that can be easily integrated into FPGA designs. Xilinx provides a vast library of IP cores, ranging from basic logic functions to sophisticated signal processing algorithms, enabling engineers to accelerate development without sacrificing performance.

Another focus of UG154 is the emphasis on design best practices and optimization techniques that can be employed to maximize the capabilities of Xilinx devices. Topics such as timing closure, resource optimization, and power management are among the critical areas addressed, which help designers achieve the desired performance within the constraints of their applications.

Overall, Xilinx UG154 serves as a vital resource that equips engineers with the knowledge and tools necessary to leverage the full potential of Xilinx FPGAs. By understanding the features, technologies, and architectural characteristics detailed within this guide, designers can create innovative solutions across a range of applications, including telecommunications, automotive, aerospace, and industrial automation.
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