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Conventions
Conventions
This document uses the following conventions. An example illustrates each convention.
Typographical
This document uses the following typographical conventions. An example illustrates each convention.
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Underlined Text | Indicates a link to a web page. | http://www.xilinx.com/virtex5 | |
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Online Document
The following conventions are used in this document:
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| Chapter 2 for details. | |
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Red text | See Figure 5 in the | ||
in another document | Data Sheet | ||
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Blue, underlined text | Hyperlink to a website (URL) | Go to http://www.xilinx.com | |
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Terminology
This section defines terms used in Chapter 7, “ML561
DVW is the data valid window opening measured by the VIH and VIL masks. The
Data Valid Window (DVW) smaller of the two values are listed as absolute time as well as in terms of the percentage of UI (Unit Interval), or bit time.
The ultimate goal of a design is to ascertain quality of signal at the receiver I/O Buffer (IOB). This measurement can only be simulated. When the hardware measurements are correlated with the simulation at the probe point, the extra probe capacitance is removed from the IBIS schematics, and the simulation is repeated at two extreme
Extrapolationcorners
| www.xilinx.com | 9 |
UG199 (v1.2) April 19, 2008