Devices

Mapping of Connectors and Cavities when Placing a Device in a

Slot

The system performs various mappings when devices are placed in slots: pins to connectors, pins to connector cavities, and pins from devices with footprints.

Mapping of Pins to Connectors
Mapping of Pins to Connector Cavities When Placing Devices in Slots
Mapping of Pins from Devices with Footprints

Mapping

of Pins to Connectors

If a pin on a functional device has a value specified for its Connector Group attribute, the pin is mapped to a slot connector with a name equal to that value. If such a connector does not exist, a new slot connector is created with that name.

Mapping

of Pins to Connector Cavities When Placing Devices in Slots

If a pin on a functional device has a value specified for its Connector Cavity attribute, the pin is mapped to a cavity with a name equal to that value. This attribute is used only if the pin also has a value specified for its Connector Group attribute. This mapping occurs even it shorts another existing signal on the cavity. If a cavity with a matching name does not exist, one is created. If a connector part restricts the creation of a new cavity, an existing cavity is used even though the name does not match.

By default, each instance of a signal and the pin for that instance are mapped to different cavities. You can use the Map To Same Cavity by Signal Attribute/Property constraint to specify that multiple instances of a signal and the pins for that instance are mapped to the same connector cavity. See Overview of Rules and Constraints for more information about using rules and constraints.

After you have placed devices and connector cavities have been mapped, you can:

Update the signal map for a slot. This action evaluates whether signals are mapped to the correct slot connectors so that harnesses are routed correctly. See Grounds and Ground Wiring Flow Using Ground Design Functionality.
Remove any unused connectors, holes and cavities from slots. See Removing Unused Connectors, Holes and Cavities from Slots.

Mapping

of Pins from Devices with Footprints

You can use the Assign Connector by Attribute/Property constraint either on a whole design or on a slot. This controls whether a device connector with a particular value for an attribute or property is mapped to a slot connector with an attribute or property that has the same value. See Overview of Rules and Constraints for more information about using rules and constraints.

If no slot connectors have attributes or properties that match, the device connector is mapped either to an existing re-usable slot connector or a new one is created if necessary.

When multiple devices with footprints are placed in the same slot:

If their connector part numbers match, they share the slot connector map and signals can be multi-termed.
If their connector part numbers do not match, a separate slot connector is created for each device connector.

Parent Topic:

Devices