Xilinx Spartan-6 FPGA Series

Spartan-6 FPGA PCB Design and Pin Planning www.xilinx.com 7
UG393 (v1.1) April 29, 2010
Preface
About This Guide
This guide provides information on PCB design for Spartan®-6 devices, with a focus on
strategies for making design decisions at the PCB and interface level.
Guide Contents
This guide contains the following chapters:
• Chapter 1, PCB Technology Basics, discusses the basics of current PCB technology
focusing on physical structures and common assumptions.
• Chapter 2, Power Distribution System, covers the power distribution system for
Spartan-6 FPGAs, including all details of decoupling capacitor selection, use of
voltage regulators and PCB geometries, simulation and measurement.
• Chapter 3, SelectIO Signaling, contains information on the choice of SelectIO™
standards, I/O topographies, and termination strategies as well as information on
simulation and measurement techniques.
• Chapter 4, PCB Materials and Traces, provides some guidelines on managing signal
attenuation to obtain optimal performance for high-frequency applications.
• Chapter 5, Design of Transitions for High-Speed Signals, addresses the interface at
either end of a transmission line. The provided analyses and examples can greatly
accelerate the specific design.
Additional Documentation
The following documents are also available for downloaded at
http://www.xilinx.com/support/documentation/spartan-6.htm
.
• Spartan-6 Family Overview
This overview outlines the features and product selection of the Spartan-6 family.
• Spartan-6 FPGA Data Sheet: DC and Switching Characteristics
This data sheet contains the DC and switching characteristic specifications for the
Spartan-6 family.
• Spartan-6 FPGA Packaging and Pinout Specifications
This specification includes the tables for device/package combinations and maximum
I/Os, pin definitions, pinout tables, pinout diagrams, mechanical drawings, and
thermal specifications.
• Spartan-6 FPGA Configuration User Guide