Data Fall Time Percent Definition

Active Edge	Data Fall Time Percent
Not Applicable	It is the time difference from when a falling Data edge crosses the high threshold to when it crosses the low threshold. The high and low thresholds are percentage of the levels of the Data period to which the falling edge belongs.

Significance of statistics:
Mean	Not important.
Min	The min percent fall time should be more than the specified limit. To small a percent fall time will induce noise on adjacent signal lines.
Max	The max percent fall time should be less than the specified limit. To large a percent fall time will eat into the setup & hold times.
Peak cy-cy	Important. A higher cycle-to-cycle percent fall time indicates that the system is affected by noise or interference from adjacent signals or both.
Peak-to-peak	Not important.