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Selecting Routing Objects

In order to begin routing, you must select one of several route objects. You can also confirm what you have selected in the design.

  1. With nothing selected,right-click and either choose one of the selection presets or click Filter and select specific objects for selection.
  2. Click one of the following objects:
    • Connections—if there is a color assigned to Connections in the Display Colors dialog box, you can toggle the display of unrouted connections using the Z U modeless command.
    • Pins—the trace begins on the active layer.
    • Traces
    • Vias—the trace begins on the active layer.

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Add Route

You can manually route using the Add Route button on the Design Toolbar. Click to indicate each corner in the trace. This type of routing works in any DRC mode. You can add arcs, miters, and vias while a trace is in progress or after it is completed.

  1. On the Design Toolbar, click the Add Route button.
  2. Select an object to route. The trace begins on the layer on which the object resides. If the object is on multiple layers, for example, a through-hole pin or via, the trace begins on the active layer. When you start routing from a trace, a tack appears at the selection point.

  3. Use the pointer to move the end of the trace you are drawing from grid point to grid point. The trace can move in one of the three Angle Modes: OrthogonalDiagonal, or Any Angle.

  4. Click to indicate a corner. To remove unwanted corners, press the Backspace key to remove the last corner and make the previous segment active.

  5. Right-click and click Add via to change layers.

  6. Proceed to your destination until you see the target shape over a pad, trace, or via.
  7. Click to complete the trace.

Dynamic Route

The Dynamic Route tool is an interactive engine that follows the direction of your pointer as you move it, seeking optimal paths and installing corners as the trace progresses. The Dynamic Route tool is a gridless, shape-based router. If the routing grid is set at less than clearance values, the clearance settings are used to decide the path.

  1. Type the drp modeless command and press the Enter key to enable the online design rule checking Prevent mode.

  2. On the Design Toolbar, click the Dynamic Route button.
  3. Select an object to route. The trace begins on the layer on which the object resides. If the object is on multiple layers, for example, a through-hole pin or via, the trace begins on the active layer. When you start routing from a trace, a tack appears at the selection point.

  4. Guide the pointer through the items you want to bypass without creating corners. To remove unwanted corners, slowly move the pointer back over the unwanted traces. The trace can move in one of the three Angle Modes: OrthogonalDiagonal, or Any Angle.

  5. Click to indicate a corner; these act as tacked corners to prevent preceding segments from moving. To remove unwanted corners that were placed by clicking, press the Backspace key to remove the last corner and make the previous segment active.

  6. Right-click and click Add via to change layers.
  7. Proceed to your destination until you see the target shape over a pad, trace, or via.

  8. Click to complete the trace.

Auto Route

The Auto Route tool activates a single-layer, pin-to-pin autorouter for a selected connection or pin pair. The auto router operates on one layer only; it will not add vias. It will also only route in the preferred routing direction of the layer.

  1. Type the drp modeless command and press the Enter key to enable the online design rule checking Prevent mode.

  2. To improve route completion results, on the Tools menu, click Length Minimization. The Auto Route tool follows the unrouted connections to add traces. If you run Length Minimization, you can provide shorter and more direct paths for the Auto Route tool to follow.

  3. On the Design Toolbar, click Auto Route.
  4. Select an object to route. The router makes three attempts to find a path, shoving existing traces in the process to create new channels for the route. If the router can't complete the route, the routine aborts and it leaves the unrouted connection.

Bus Route

The Bus Route tool is a dynamic router that creates busses. Use the bus router to quickly route data lines, memory arrays, or similar connections where several routes need to flow together from one part to another or to a set of parts.

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