Go to www.awrcorp.com
Back to search page Click to download printable version of this guide.

Cell Options Dialog Box: Layout Tab

The Cell Options dialog box Layout tab allows you to set properties for a given instance of a layout cell. To access this dialog box, create a schematic, choose View > View Layout, right-click a layout cell, and choose Shape Properties. This dialog box shows the options for a shape that is a 3D pCell. This dialog box contains the following options:

Field Description
Line Type Applies only to configured cells that use the LPF file to configure their model layers. There is a line type entry for each line type definition in the LPF file.
Layer Mapping Select the layer mapping table (from model layers to drawing layers) that is applied to the selected layout cell instance.
Orientation Flipped: (Non-3D pCell only) Flip the cell instance from the normal orientation.
Angle (Non-3D pCell only): Set the angle of orientation. For normal orientation, specify 0 degrees.
Rotate about z: (3D pCell only): Set the z angle of orientation when a 3D pCell is used.
Rotate about y: (3D pCell only): Set the y angle of orientation when a 3D pCell is used.
Rotate about x: (3D pCell only): Set the x angle of orientation when a 3D pCell is used.
Z Position (3D pCell only) EM layer: The recommended method for offsetting 3D pCells or subcircuits in the Z-direction is to set the base Z position for a 3D pCell or subcircuit by specifying an EM layer from the Stackup. If this is option is grayed, you need to specify a Stackup for 3D view on the (schematic) Options dialog box Schematic tab for both the subcircuit and the parent schematic. See “Options Dialog Box: Schematic Tab” for more information.
Offset: Additional control for the Z position of the 3D pCell or subcircuit. This option should only be an offset from an EM layer specified in this section.
Freeze Freezes the cell position to prevent it from being moved with the mouse or via coordinate entry. Frozen cells, like anchored cells, do not move when you snap together the layout. Frozen cells exhibit a weaker form of snapping than other cells, and thus different behavior than anchor cells. With anchored cells, adjacent layout cells attempt to readjust so that they snap to the anchored cell, while with frozen cells, the adjacent cells do not always try to snap to the frozen cell. If you want to make another layout cell snap to a frozen cell, try selecting the frozen cell and then snap the layout together. There can be multiple frozen cells within a layout.
Use for Anchor "Anchors" one cell within a layout. The anchored cell remains in a fixed location, and all other cells adjust themselves accordingly when you change circuit parameters and resize objects. There can be multiple objects anchored per schematic. Each anchored object stays in a fixed position when you snap together the layout. Unlike the Freeze option, you can move anchored cells with the mouse (or with coordinate entry). Selecting both Use for anchor and Freeze check boxes causes the cell to be used as an anchored cell. Only the anchored layout objects at the top level of a hierarchy are used to anchor the layout cells.
Stretch to Fit For use with the TRACE elements. For example, if this option is set for an MTRACE, then the MTRACE automatically stretches to fit between two other cells when you snap together the layout.
EM Extraction Options Enable: Select to enable the cell for extraction.
Group name:: Name of the extraction group for the cell, only used if extraction is enabled.
Clipped by simulation boundary When selected, 3D EM cells outside of the simulation boundary are not included in the simulation. If a 3D EM cell is on both sides of the boundary, only the shapes in the simulation boundary are simulated.

Legal and Trademark Notice