Xilinx System Generator v2.1 Reference Guide

The Core datasheet can be found on your local disk at:

%XILINX%\coregen\ip\xilinx\eip1\com\xilinx\ip\sid_v1_1\doc\sid

.pdf

This is a licensed core, available for purchase on the Xilinx web site at:

http://www.xilinx.com/ipcenter/interleaver

Puncture

The Xilinx Puncture block allows you to remove arbitrary bits specified as a puncture code from your input data and create a new value. This value is presented as the output from the block. The Xilinx puncture block accepts data of type UFixN_0 (where N is equal to the length of

the puncture code) and outputs data of type UFixK_0 (where K is equal to the number of ones in the puncture code).

The Xilinx Puncture block can be used to implement a range of punctured convolution codes. The following diagram illustrates an application of this block.

Figure 3-37: Example of a Puncture block application

The preceding diagram shows a 1/2 rate Convolutional Encoder block connected to a binary input signal source. The slice blocks separate the convolution code output over the two branches. The output of the slice block is connected to a Serial to Parallel block which concatenates the output of the convolution code to form a 3-bit word. The puncture block removes the center bit for code 0 ( [1 0 1] ) and LSB bit for code 1

( [1 1 0 ] ) to produce a 2-bit punctured output which is again serialized to be connected to the I and Q channel for baseband shaping.

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Xilinx V2.1 manual Example of a Puncture block application

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.