R

Chapter 6: Special Design Considerations

BUFG

RDClk0_USER

100MHz

RDClk180_USER

CLK0 DCM

CLK180

CLK2X

IBUFGDS

RDClk

100 MHz

IOB

DCMReset_RDClk

Locked_RDClk

Denotes I/O on User Interface

100 MHz Path

IOB DDR Flops

Sink Internal

Data & Control

Bus

16

32

Q D

RDClk0_GP16

100 MHz

200 MHz Path

QD

Q D

RDat[15:0] & RCtl

RDClk0_GP

100 MHz

RDClk180_GP 100 MHz

IOB

 

Internal Bus

 

 

 

RStat[1:0] & RSClk

 

 

D

 

Q

IOB

RStat[1:0] & RSClk

 

25 MHz

 

 

 

 

 

RDClk0_GP

 

 

 

 

 

 

 

100 MHz

 

EN

 

 

 

Enable at ¼ (or 1/8) PL4 Rx data rate

 

 

 

 

 

Figure 6-1:Embedded Clocking Option

User Clocking

The Sink user clocking configuration allows users to fully customize the way the Sink core clocks are implemented. An example file is provided (pl4_lite_snk_clk.v/.vhd) that shows how to implement a clocking module for the Sink core. An illustration of the User clock inputs and this example module are shown in Figure 6-2and the user inputs are

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SPI-4.2 Lite v4.3 User Guide

 

 

UG181 June 27, 2008

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Xilinx UG181 manual User Clocking, Special Design Considerations

UG181 specifications

Xilinx UG181 refers to the User Guide for the Xilinx 7 Series FPGAs, which offers a comprehensive overview of the architecture, capabilities, and features of these powerful field-programmable gate arrays (FPGAs). Designed to cater to a wide range of applications, Xilinx 7 Series FPGAs are widely adopted in industries such as telecommunications, automotive, aerospace, and consumer electronics.

One of the main features of the Xilinx 7 Series FPGAs is their use of advanced 28nm technology, which enables them to achieve high performance while maintaining low power consumption. This fine process technology not only ensures better power efficiency but also allows for increased logic density. The 7 Series includes several families, such as Artix-7, Kintex-7, and Virtex-7, each tailored for specific application demands ranging from cost-sensitive solutions to high-performance data processing.

Xilinx 7 Series FPGAs also incorporate a rich set of programmable logic resources. This includes Look-Up Tables (LUTs), Flip-Flops, and Digital Signal Processing (DSP) slices that have been optimized for various arithmetic functions. With several thousands of logic cells available, designers can implement complex algorithms and systems directly in hardware for improved performance over traditional software solutions.

In addition to their logic capabilities, Xilinx 7 Series FPGAs feature an array of high-speed serial communication interfaces. These include support for technologies like PCI Express, Gigabit Ethernet, and Serial RapidIO, which facilitate efficient data transfer and integration into enterprise-level systems. The presence of high-speed transceivers also makes them ideal for applications that require fast data handling like video processing or high-frequency trading.

Furthermore, these FPGAs offer extensive memory options, including support for a wide range of external memory interfaces. This versatility allows for the integration of high-bandwidth memory solutions, which is essential for performance-intensive applications. With the introduction of the Memory Controller IP, users can easily connect various memory types, ensuring flexibility in system design.

Finally, Xilinx has made significant strides in development tools for 7 Series FPGAs, providing a robust ecosystem for design engineers. With design suites such as Vivado and SDK, users benefit from a comprehensive platform for deciding, simulating, and implementing designs efficiently. The combination of advanced hardware capabilities and powerful software tools solidifies the position of Xilinx 7 Series FPGAs as a preferred choice for custom digital hardware design across various industries.