In the IBIS Forum's I/O BUFFER MODELING COOKBOOK, page 12, there is a
table - "Recommended Load Circuits and Waveforms for V/T Data
In the table, there are 4 waveforms to extract V/T data for [Rising
Waveform] and [Falling Waveform] for a standard push/pull CMOS type
I/O buffer+ R-fixture+V_fixture.
For falling edge, two waveforms are obtained based on
(1) V_fixture=0, and
For rising edge, two waveforms are gathered based on
(3) V_fixture=0, and
The cookbook uses (2) and (3) to extract data in [Ramp] and says (1)
and (4) are for correlation.
How is the correlation done?
What information can be extracted from (1) and (4)?
Inside the Quad Design XTK manual, the (1) and (4) can be used to
Bounce Model. How?
Any inputs from you are appreciated.
CAE Engineer of EDA Department
Digital Equipment Corp. Taiwan Branch
TEL: 1-886-3-3900000 ext. 2152