Timing Diagram Markup Language (TDML), Version 1.1-1-051899
Element:Uncertainty Falling
Tag:<uncertainty.falling>
Definition:

Uncertainty Falling is the amount of time starting from the falling Edge <e> of a clock during which the Edge <e> transition may occur.

For example, if a falling clock transition occurred at 50ns and had 10ns of Uncertainty Falling, then the transition could occur at any time from 50ns to 60ns. This type of uncertainty results when a clock Signal <signal> propagates through interconnect delays or buffer delays whose delay times are specified as a range of possible times.

This element is used to describe uncertainty in clock type Signals <signal>s. Uncertainty on edges of other types of signals are determined by the "te" attribute and the "tl" attribute on the Edges <e>s.

The Jitter Falling <jitter.falling> element is similar to this element, but it models a different physical phenomenon where the uncertainty is centered around a falling transition instead of starting from the transition.

Remarks:

Associated Attributes:

None

Element Content:

SGML Model:
<!ELEMENT uncertainty.falling (%tdml.value.model;)     >

Standard Version: 1.0
Original version: February 1, 1999


Timing Diagram Markup Language (TDML), Version 1.1-1-051899
Copyright © 1998, 1999 by Silicon Integration Initiative, Inc. All rights reserved worldwide.