Signal Integrity
Building a working system today requires knowledge of a great deal more than just boolean logic and HDL code.
The documents and links in this area are designed to give you everything you need to achieve reliable PCB designs on the first try.
SI Fundamentals
Feature size reduction and the need for reduced power consumption has driven core voltages down from the old standard of 5V to the 1.0V range. This change in voltage and signal frequency content requires us to use new design practices that take into account electrical effects that could previously be ignored.
- Methodologies for Efficient FPGA Integration into PCBs. A system-level summary of PCB design flow, with emphasis on signal and power integrity aspects. It is relevant to all Xilinx devices up to the Virtex®-II Pro series.
- Signal integrity and high-speed PCB design: Issues, Tools and Methodologies. This series of articles explores tools and methods you can use to combat signal and power integrity distortions throughout product development.
Calculators and Estimators
When designing a board with elaborate ICs such as FPGAs, it is important to calculate the FPGA demand on the PCB and vice-versa. We provide information on signal integrity, static and dynamic power, and SSO:
- Managing Simultaneously Switching Output (SSO) Noise
- Power Calculators and Estimators
(including XPower Analyzer)
Power Supply and Power Distribution Systems (PDS)
We can help you analyze and design power and return current paths with information on bypass capacitor selection, power consumption and voltage regulators.
Learn more about Power Supply and PDS
Printed Circuit Board (PCB) Design
We offer a high-density package routing information, a detailed PCB design checklist and many other resources to ensure that you consider all the issues when designing a PCB.
Learn more about PCB design
Signal Integrity Simulation Tools
Xilinx provides an extensive collection of documentation and tools for simulation. We support both IBIS and SPICE models and design kits:
Dr. Howard Johnson on Signal Integrity
Our Virtex-4 FPGA focused signal integrity DVDs presented by Dr. Howard Johnson cover the following topics:
- Link description
- Microstrips and striplines
- Crosstalk and coupling
- Loss budgeting
- PCB transitions
- Backplane connectors
- Stripline losses
- Equalization