Modify contents of Net Group using component pins.
This method is almost the same as the Component Pin sub-menu in the Classification Tab.
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Select a Component Group.
All pins are listed in a pin name table.
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Select required pins from the pin name table.
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Click Set Net Group.
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In the Net Group List dialog, select the required Net
group.
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Click OK.
All nets connected to the selected pins are automatically added to the
selected Net Group.
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Click Classification tab to confirm and select
DDR_CNTR Net Group.
As an example, in the figure below, pin L1 and L2 are added
to DDR_CNTR Net Group.
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Click Delete Net Group to delete some pins from all
predefined Net Group contents.