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AR# 2012

Input and Output parameters (i.e. setup times) from XDELAY don't match those listed in Data Book.

Description

Keywords: Set-up, i/o timing, xdelay

Urgency: Standard

Input and Output parameters (i.e. setup times) from XDELAY
don't match those listed in Data Book.

Solution

Page 4-90 of the 9/96 Data Book states:
"The XACT delay calculator uses this indirect method. When there is a
descrepancy between the two methods, the values listed below [table in
Data Book] should be used, and the derived values must be ignored."

The above can be relied on because the values in the Data Book
are tested directly.
AR# 2012
Date Created 03/11/1997
Last Updated 05/31/2002
Status Archive
Type General Article