User`s guide

14
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6 Di
g
ital Simulation
Usin
g
Top-Level Interface Ports
Interface ports have two uses. You can use them to define:
• connections only
• stimuli and connections
To enable usin
g
interface ports for stimuli
1
In Schematics, from the Options menu, select Restricted
Operations.
2
In the Stimulus Options frame, select (
✓) both check boxes.
3
Click OK.
You are now ready to define digital stimuli. The stimuli you
define for a particular schematic are stored in a stimulus file
(
.stl).
Note
Clearin
g
the upper check box under Stimulus
Options disables the automatic
g
eneration of
di
g
ital stimuli for interface ports. It does not “erase”
or otherwise make unavailable any stimuli that
have been saved in a stimulus file.
Wa
y
s to start editin
g
stimuli for interface ports
There are two ways to start the Stimulus Editor when using
interface ports. These methods have the following effects.
• Method 1: Loads the Stimulus Editor with default stimuli
for all top-level input and bidirectional ports.
• Method 2: Loads the Stimulus Editor with a default stimulus
for one interface port.
not
included
in: