Symbol Editor Settings

Select Setup > Settings + Symbol Editor to define properties for symbols created in PADS I/O Designer as well as the page size and orientation for building schematics.

The Ports section defines pin length as a function of the units defined in the General section. Also it defines the spacing between pins as a function of grid steps.

Note
	When you use PADS Designer as your schematic tool, PADS I/O Designer reads the grid value from PADS Designer settings when you open the project. You can change the value of the grid used by PADS I/O Designer, but the grid value reverts to the PADS Designer setting when you next open the project.

The Symbol Editor page allows you to alter the following Symbol Window options:

• Show or hide rulers.

• Show or hide the crosshair cursor.

• Default unit of measurement. Possible values are: 0.01mm, 0.05mm, 0.1mm, 0.5mm, 1.0mm or 0.005inch, 0.01inch, 0.05inch, 0.1inch.

• Page size. Available page sizes are: A0, A1, A2, A3, A4, A, B, C, D, E.

• Page orientation; portrait or landscape.

• Port length.

• Spacing between ports.

• Label format for ports in functional symbols and pins in PCB symbols (Signal Name, Pin Name, Pin Number or Pin Function).

• Show or hide grid.

• Snap Symbol Window elements to grid.

• Grid Step.

Port Types

The Setup > Settings + Port Types (under Symbol Editor) page allows you to alter the following options:

• Show or hide port type on a symbol in the Symbol Window.

• Set port size of a symbol in the Symbol Window.

• Associate port type with a shape.

• Available built-in port types include: TERMINAL, GROUND, POWER, TRI, OEM, OCL, ANALOG, BI, OUT and IN.

• Available built-in shapes include: ANALOG, ARROW, BI, CLK, DIAMOND, IN, INV, OCL, OEM, OUT and TRI.

PCB Signals Generation

The Setup > Settings + PCB Signals Generation page contains settings for PCB signals (power, ground and Vref). These settings are used by Update Power Signals.

Figure 9-6. PCB Signals Generation Window

If the 'Enable Automatic PCB Signals Update' option is selected then PADS I/O Designer will perform check for power signals before the following actions;

• Symbols Generation

• Export Schematic and Symbols / Export Schematic and Symbols for All components

• Export Interconnectivity Table / Export Interconnectivity Table for All components

• Export All Symbols / Export Current Symbol Only

• Schematic Update / Schematic Update for All components

The PCB Signals for VREF/VCCIO Pins list contains default PCB signal mappings for VREF/VCCIO pins. The value for a given VREF/VCCIO pin from the list is used only if the pin does not have a manually assigned PCB Signal.

The remaining power and ground pins list contains default PCB signal mappings for power and ground pins other than VREF/VCCIO. The automatically connect remaining power and ground pins option allows you to control whether PADS I/O Designer should generate signals for the selected pins.

Symbol Export Settings

The Setup > Settings + Export (under Symbol Editor) page contains settings for symbol export:

• Run viewer after export: Select whether to run a viewer after exporting a symbol.

• Export graphical attributes: This option allows you to export graphical attributes, such as colors, fonts and graphics.

• Create multipage schematic: This option allows you to split generated schematics into multiple pages. When this option is enabled, schematics that do not fit into the chosen page size will be split.

• Add dangling nets: A generated schematic contains nets that connect PCB symbol ports with functional block ports. This option tells PADS I/O Designer to generate nets for ports that do not exist in the functional block.

• Export port direction shape: This options adds graphical elements representing port types to the exported file.

• Export swap groups: Export swap group information. Option is enabled by default.

• (PADS Designer only) Automatically add page border to the generated schematic: This group allows you to add a page border to the PADS Designer schematic.

• (Orcad flow only) Extend functional symbol with _func and keep base symbol name for PCB symbols.