Product Documentation
Virtuoso Electromagnetic Solver Assistant User Guide
Product Version IC23.1, November 2023

Ports Tab (EMX)

For an IC layout, the Ports tab shows the port and edge details for a model.

The following table describes the details available in the Ports tab for an IC layout cellview using the EMX simulator.

Table/Command Description

Ports Table

This table shows the details of ports to be included in a model.

- Reference

Names of the reference nets to be used for the ports.

This field is available only for Clarity models when the Current Return Path field on the Selection tab is set to Local Reference.

- Instance

Name of the instance for which a port is created.

- Pin

Name of a instance pin to which a port is connected.

- Type

Possible values for a model that uses the Clarity simulator:

  • Cross layer: The positive and negative edges for these ports are placed on different layers. These ports connect the layers vertically.
  • Same layer: The positive and negative edges for these ports are placed horizontally on the same layer.
  • Diagonal: The positive and negative edges for these ports are placed diagonally on different layers.

Possible values for a model that uses the EMX simulator:

  • Included: (Default) The port is to be included in the simulation. You can make it a differential port by specifying a reference pin in the Reference column.
  • Grounded: There is no port. The specified pin is directly connected to ground. When you add grounded pins to the layout, the model has fewer ports and the simulation runs faster.
  • Disabled: The port is disabled and is not used in simulation, but it is used as a reference for other ports of type Included. To use a disabled port as a reference for another port, specify it in the Reference column for that port.

- Net

Name of the net to which the port is connected.

Automatically generate ports

Automatically generate ports for the instances selected on the Selection tab. The rules for port generation vary for IC and package layouts and also for different EM simulators.

Add Port

Adds a new row in the ports table.

Remove Port

Removes the selected port from the ports table.

Move Port Up

Move the selected ports up in the ports table.

Move Port Down

Move the selected ports down in the ports table.

Report Schematic Binding

Displays the schematic binding report. By referring to this report, you can resolve any XL binding issues before running a simulation.

This command is not visible when Extract Full Cellview is selected on the Selection tab.

Validate Ports

Runs the rules that validate the ports.

N-Port Common Node

Specifies the name of a net to which the reference pin of the n-port instance in the schematic is connected

Edges Table

This table shows the details of edges of a port selected in the ports table.

This table is available only for IC layouts when the model is using EMX.

- Polarity

Specify + or - that indicates the polarity of an edge.

- T

Specifies the connection type for an edge.

- Layer

Name of the layer to which an edge of a port is connected.

- X1

X coordinate of the top-left point of an edge.

- Y1

Y coordinate of the bottom-right point of an edge.

- X2‘

X coordinate of the top-left point of an edge.

- Y2

Y coordinate of the bottom-right point of an edge.

Move Connection

Lets you move the selected edge.

Add Edge Connection

Lets you select an edge at which you want to create an edge connection. It adds a new row in the edges table and fills in the details of the edge.

Add Point Connection

Lets you select a pin for which you want to create an internal port. The tool creates a port at the pin location. The size of the port is same as that of the pin.

Remove Connection

Removes the selected row from the edges table.

Related Topics

Specifying Ports for EMX Models in IC Layouts


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