As a person responsible for the FPGA enterprise marketing team, I have to say that due to the remarkable achievements in process technology and the originality in the field of silicon chip design, FPGA is continuously fulfilling its commitment to support system-on-chip design. With the introduction of each new generation of products, FPGAs have more and more functions in the system, which can be used as coprocessors, DSP engines, and communication platforms. In some applications, they can even be used as complete system-on-chip.
Therefore, under the influence of Moore's Law, the number of gates of FPGA products is increasing, and the performance and special functions are gradually strengthened. This makes FPGAs replace the functions that only ASICs and ASSPs can play in the field of electronic systems. However, in the end, FPGAs must be equipped with appropriate design tools to allow designers to fully play their role, otherwise the best products are meaningless.
Undoubtedly, with the upgrading and innovation of FPGA silicon chips, FPGA tools have achieved significant improvements in overall runtime, compile time, and place and route algorithms while achieving lower power consumption and higher performance. However, the above advancement is basically not reflected in embedded software, and DSP designers or system architecture engineers are not familiar with FPGA design work. Although FPGA performance and customization are better than MPU and ASSP, many design teams still choose MPU or ASSP because they are not familiar with FPGA design. This situation really should not blame the design team, after all, MPU or ASSP design work is easier and faster, and it takes time to learn new design techniques, resulting in a longer design cycle of the design team. If you want to help FPGA users succeed, you must automate the design work, but you can't forcefully define the user's design process.
From another perspective, in order to further promote FPGA, it is necessary to further meet the requirements and design method requirements of embedded software and other design fields such as DSP based on existing VHDL and Verilog designers. These designers have their own specific requirements and require different design methods and languages. An appropriate platform should be built to enable FPGA vendors and their third-party ecosystem partners to meet specific application and market needs.
For example, with the introduction of the latest Virtex-6 and Spartan-6 FPGA family, Xilinx has begun to recommend the concept of “target design platform†to customers.
The target design platform integrates five key components, taking into account the customer's design process and success requirements: FPGA devices, IP cores, design environments with industry-proven methods, powerful reference designs, and scalable development boards and kits. As part of the above solution, we have also optimized the tools to provide the tools and IP required for specific design areas such as logic, embedded, DSP, and system-level design to ensure the productivity of the design team. Logic designers naturally want to ensure a complete RTL design flow with all the traditional FPGA tools to meet the needs of advanced floorplanning, online verification, and incremental implementation. However, FPGA vendors need to start from the practical needs of designers in other fields to enable embedded and DSP designers and system architects to tie together aspects of design work and use programmable logic efficiently.
FPGA vendors have supported the development of embedded and digital processing technologies for many years and have seen tremendous changes in the market. Especially in the past two and a half years, we have seen an average of 20% of embedded design customers are using more than one processor. In the past, the challenge for customers was mainly how to complete the design work independently. Now, we must provide customers with a more automated design process that simplifies system generation and take full advantage of multi-processors.
Embedded designers need a new design approach that allows them to quickly configure the hardware platform and create custom software designs that include the appropriate libraries, automatically generated device drivers, and a complete development board support suite. This efficient environment speeds up the development process and saves development time, thus avoiding error-prone manual operations. In addition, designers will be able to create their own custom processing platforms that integrate external functions into the FPGA to reduce system cost. This helps them achieve the best balance between system features and dimensions, as well as hardware/software features for maximum cost performance.
Let's talk about the DSP design process. To help algorithm developers implementing complex algorithms in FPGAs, we need to provide designers with a highly automated process that does not affect the design effort even if the designer is not familiar with the hardware description language. Designers should be able to use the DSP design environment to develop hardware solutions for advanced algorithms in the early stages of the overall system development process, or to assemble a complete DSP system for production.
The DSP design flow usually includes the following steps:• Develop and validate hardware models with industry-standard tools from The MathWorks in conjunction with Xilinx's System Generator and AccelDSP synthesis tools.
• Generate accurate circuit diagrams of HDL bits and period simulations, that is, their behavior ensures compliance with functions in the original model.
â— Design synthesis and generate bitstream for FPGA programming. FPGA designers now have no need to turn DSP architects or system architects' designs into HDL, avoiding time-consuming and error-prone steps.
In this model, the designer can use filters whose coefficients need to be adapted to the data that will pass through the system, so we can add processor components to the filter through shared memory. Designers can also call the software development kit in the system builder, write some C code to update the coefficients based on the data, edit the entire module, download it to the development board for real-time debugging, and still implement the hardware using SimuLink or MATLAB benchmarks. Co-simulation. Finally, if some C code needs to be modified, the designer can make changes on the fly without having to recompile the design.
The role of the system architecture engineer is to complete the entire design work. Depending on the complexity of the design, they may need to work across domains in the areas of embedded, DSP, and RTL. At this time, FPGA vendors need to provide system-level and RTL-level tools.
The concept of system design requires the integration of technical knowledge in different fields to make better use of resources in FPGAs. As applications become more dependent on DSP functionality, we can let the processor take full advantage of the accelerator's role to dramatically improve performance. In fact, one of the great advantages of FPGA-specific system design is that it can perform system partitioning and control the balance between hardware and software implementation. For many users, it is no longer necessary to algorithm optimize low-level HDL language.
FPGAs provide a high degree of flexibility in designing, implementing, and modifying system-on-chip hardware. This flexibility is especially important to designers in the current global industry, and is constantly serving more industries and companies. And engineers. Even in the design phase of the product, designers of electronic systems are faced with increasing business challenges and increasingly demanding product requirements, so FPGAs must be used to solve the problem, otherwise it will be difficult to work. FPGA vendors are working with partners to deliver new design approaches that help customers keep pace with the rapidly evolving business and product requirements. Not only to meet the development requirements of FPGA silicon chips, but also to meet the development requirements of related tools, thus providing a more market-oriented, user-friendly design experience.
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