Xilinx Blocks

LogiCOREs, as well as signals and control circuits to drive the clock network. Consequently, most System Generator blocks do not provide an explicit enable port. There are two exceptions> the Register block and the Addressable Shift Register block, which fundamentally require a CE port in order to target a high performance hardware implementation.

Simulink Enabled Subsystems can be used to enable blocks and subsystems. In order to support System Generator’s bit and cycle true modeling in Simulink, it is required that the enable port on an enabled subsystem be driven by the Enable Adapter block, found in the Xilinx blockset’s MATLAB I/O library. An example of this requirement is shown in the figure below. This shows an address generation model for a MAC-based FIR filter. The DownCount subsystem is stalled for a single sample period when the CoefCount counter value is equal to the number of filter taps (in this case, 96 taps).

Figure 3-67: Example of enabled subsystem

The following blocks cannot be placed in an enabled subsystem with System Generator v2.1. The blocks are: CIC, Convolutional Encoder, FIR, FFT, Gateway In, Gateway Out, RS Decoder, RS Encoder, and Viterbi Decoder.

Enable Adapter

When using an enabled subsystem that contains Xilinx blocks, the enable port must be driven by a Xilinx Enable Adapter block. This block is a required interface to any enabled subsystem that contains a System Generator block. The Enable Adapter block’s output port must drive the subsystem’s enable port.

Gateway In

The Xilinx Gateway In block is the input into the Xilinx FPGA part of your Simulink design. It converts Simulink double precision input to the System Generator fixed point type, and defines an input port for the top level of the HDL design generated by System Generator.

MATLAB I/O

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Xilinx V2.1 manual Gateway, Enable Adapter
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V2.1 specifications

Xilinx V2.1 is a notable iteration in the series of versatile and robust Field-Programmable Gate Arrays (FPGAs) developed to cater to a wide range of applications. Launched to provide enhancements in performance and flexibility, V2.1 embodies sophisticated technologies and features that stand out in the electronics industry.

One of the primary features of Xilinx V2.1 is its improved processing power. The architecture has been optimized to support higher clock speeds and increased logic density, allowing for more complex designs to be implemented effectively. This boost in performance is facilitated by utilizing advanced silicon technologies, which significantly reduce power consumption while maximizing efficiency.

Another significant characteristic of Xilinx V2.1 is its enhanced I/O (Input/Output) capabilities. The device supports a variety of industry-standard interfaces, which include PCI Express, SATA, and various serial communication protocols. Such adaptability ensures seamless integration into existing systems, providing engineers with the flexibility to adapt to various application requirements without the need for substantial redesign efforts.

Xilinx V2.1 also features improved scalability, making it a prime choice for applications that demand diverse performance levels. This device supports an array of configurations and can be used in small-scale projects as well as in larger, more demanding environments requiring extensive resources. This scalability is further aided by support for multiple development platforms, enabling rapid prototyping and simplifying the design process.

Security is increasingly becoming a priority in digital design, and Xilinx V2.1 addresses this concern via hardware security features. It includes enhanced encryption protocols and secure boot functionalities, which help protect intellectual property and sensitive data from unauthorized access.

Additionally, the integration of advanced DSP (Digital Signal Processing) blocks allows Xilinx V2.1 to efficiently handle data-intensive tasks such as video processing and real-time signal analysis. These capabilities make it suitable for applications in telecommunications, automotive systems, and industrial automation.

Xilinx V2.1 also benefits from a rich development environment, including robust software tools that facilitate design entry, simulation, and verification. The support for industry-standard programming languages like VHDL and Verilog simplifies the development process, enabling engineers to design complex systems more efficiently.

In summary, Xilinx V2.1 stands out due to its impressive combination of high performance, flexibility, scalability, security, and comprehensive development support. These features make it a valuable asset for engineers and developers looking to innovate across various sectors, from telecommunications and automotive to industrial applications.
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