[SI-LIST] : specctraquest timing question

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From: Sampson, Scot ([email protected])
Date: Tue Mar 20 2001 - 11:16:38 PST


 Hi All

We are in the process of trying to perform timing analysis
based on specctraquest simulations to determine if we are in good bad
or other territory. At the start of this exercise the engineer
has a clock to out number that is made up of a clock to buffer
input delay and then a buffer delay into a test load. From the
simulations we have the delay of the buffer driving the desired
net. What we desire is the clock to receiver input number. At
a high level, this appears to be the clock to out number, minus
the buffer into the test load, plus the driver into the receiver in
question. Is the last of these three terms merely the worst of
switchrise+risedly or switchfall+falldly? Is the only way to get
the buffer into testload number running a sim with the buffer and
test load? Is the timing number we are looking for merely the
clock to out number plus the worst of settlerise/settlefall delay?

 Thanx for the help

 Scot

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