Before connections are made to a bus, the bus may need to be split for the following reasons:
- Different bits of the bus go to different parts of the design.
- Some bits of the bus need not to be connected and have attributes on them (output pins mark unused, tie to high/low or tie to constant).
The bus pin can be split into standard or custom slices:
- Standard slices are common, off-the-shelf slices
available in the right click menu of a selected bus pin or port.
- Custom slices are various slice/width
combinations that are possible for the given bus width but not available from the
off-the-shelf listings in the right click drop-down menu. A special dialog box is
available to customize the slices.
Refer to Create Slices for details.