Inherited Connections when Generating All From Source

Generate All From Source and inherited connections    :

• If you use inherited connections to assign more than one value to a global net, the netSet property, which specifies the new value for a global signal, is not copied from the schematic instance to the layout instance.
• Any netExpression pin properties that have not been set are copied to the layout terminals. If multiple netExpression properties exist for the same terminal name, then you are prompted to select one property to be preserved on the terminal.
• Layout nets inherit the sigType attribute from the schematic. This means the signal type set for a net in the schematic is automatically passed to the layout during generation.
• If any changes are made to the schematic signal type, the same can be updated in the layout by using the Update Net Signal Type option on the Update Components and Nets form. If the net signal type needs to be manually updated in the layout, you can use the Property Editor assistant. The signal type for the selected net is listed as an Attribute in the Property Editor assistant.
• Although it is recommended to use explicit terminals for layout generation, if required, inherited connections from the schematic can be mapped to physical pins in the layout. Generate All From Source can create layout terminals for implicit schematic terminals defined by inherited connections, if the layout master terminal has a defined net expression. The net expressions are resolved by the implicit inherited connections, or the net sets in the schematic.
• If a layout instance master terminal has an inherited net expression (an implicit inherited connection) for a global layout net, Generate All From Source creates a physical-only layout terminal with no schematic equivalent. The terminal has the physOnly property set to t so that it can be ignored by Layout XL functions, such as Update Components And Nets and Check Against Source, and by the digital applications further along the design flow.

Related Topics

lxParamsToIgnore Property

Connectivity Form

Generate Layout Form

lxEvalCDFCallbacks

Update Components and Nets Form