Defining Bind-to-Open on a Per Cell Basis

You can specify that a single instantiation of a cell is to be skipped by setting a bind-to-open attribute on it.

Only non-text instances, such as schematic instances can be skipped using bind-to-open. Bind-to-open should not be set on hierarchical text instances.

You can set the attribute on a cell in two ways:

• Bind-to-open on a cell
• Bind-to-open on a cell in a specific library

The Hierarchy Editor displays the string **UNBOUND** to indicate that a cell has a bind-to-open attribute. **UNBOUND** is not an error, unlike **NONE* . **UNBOUND** indicates that the cell is deliberately unbound while **NONE** indicates that the binding for the cell could not be determined from the binding rules.

To set a bind-to-open attribute on a cell,

1. Choose View – Parts Table.
2. In the Cell Bindings section, right-click the cell to which you want to add a bind-to-open attribute.
3. From the pop-up menu, select Add Bind To Open (Skip Cell).
   In case multiple rows are selected, the pop-up menu displays the Add Bind To Open (Skip Multiple Cells) option.
   The Add Bind To Open dialog box appears.
   
   
4. In the Add Bind To Open dialog box, do one of the following:
   • If you want the cell to be unbound, regardless of which library it comes from, select Add Bind To Open on Cell "cellname".
   • If you want the cell to be unbound when it is obtained from a specific library, select Add Bind To Open on Lib "libname", Cell "cellname".
5. Click OK.
   The cell is now unbound. The Library, View Found and View to Use columns in the Cell Bindings section display **UNBOUND**. If you selected Add Bind to Open on Library "libraryname", Cell "cellname", only the View Found and View to Use columns display **UNBOUND**. Also, the instances contained in the cell are no longer displayed in the Instance Bindings section because the cell is now unbound.

Viewing Instantiations

To see a list of the instantiations to which the bind-to-open attribute applies,

1. In the Cell Bindings section, right-click the cell.
2. From the pop-up menu, select Explain.
   The Explain dialog box appears. The Instantiations section lists the instantiations of the cell. The bind-to-open attribute applies to all these instantiations.

Related Topics

Rules Definition at the Cell Level

Defining Stop Points on a Per-Cell Basis

View List Building Forms

Changing the Views in the View Choices List Box

Wildcards in a View List

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