Xilinx System Generator v2.1 Reference Guide

added to the channel that is last to present a valid input sample. Note that if this parameter is zero, the block has a feed-through path; otherwise, it does not.

Other parameters used by this block are described in the Common Parameters section of a previous chapter in this manual.

The Xilinx Sync block does not use a Xilinx LogiCORE.

Up Sample

The Xilinx Up Sample block increases the sample rate at the point where the block is placed in your design. The input signal is over- sampled so that every nth input sample is presented at the output, or presented once with (n-1) zeroes interspersed.

The output sample period is i/k, where i is the input sample period and k the sampling rate.

In Simulink, a block changes its output right after it is enabled. In hardware, a register does not change until the clock enable is sampled, i.e. one clock cycle later. To make the hardware cycle-trueto the Simulink model, the up sample block is implemented with the circuit shown below. The portion of the circuit within the dashed line is always present. The additional mux used for zero padding is removed if the Copy Samples option is selected on the block parameters dialog box.

Figure 3-27: Up sample block hardware implementation

The clock enable connected to this circuit is the same one that is distributed to the blocks connected to its input. The timing diagram shown below demonstrates the circuit's behavior. It is important to notice that this circuit has a combinatorial path

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Xilinx V2.1 manual Up Sample, Up sample block hardware implementation
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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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