Constraint Browser: Component/Parts Section, Parts Tab

This topic describes the Parts tab in the Constraint Browser, Component/Parts section, in eCADSTAR PCB Editor and eCADSTAR PCB Viewer. This tab is not available in Constraint Browser for eCADSTAR Schematic Editor.

• In eCADSTAR PCB Editor, launch Constraint Browser by clicking Design > Design Rules > Constraint Browser or Home > Design Rules > Constraint Browser on the ribbon.
• In eCADSTAR PCB Viewer, launch Constraint Viewer by clicking Home > Design Rules > Constraint Viewer on the ribbon.

The following tabs are displayed in the pane on the right.

Basic

Detail

Parts Tab

The Parts tab, in the Component/Parts section, allows you to define the parts that are displayed in the Parts tree by filtering them using the Filter box. The items that you select in the tree are displayed in the Parts table, and can be further filtered using the View list and by clicking <Filter> in each column. The attributes that are displayed are read-only.

Parts Tree

You can filter the parts that are displayed in the Parts tree before selecting the items that are added to the Parts table. Select multiple parts using the CTRL or Shift keys.

Item	Description
Filter box	Allows you to display parts whose name partially matches the text string that you enter.
Select All	All items that are currently shown in the tree are displayed in the Parts table.

View Settings

Allows you to select the items that are shown in the Parts table by filtering the contents of the Parts tree.

Item		Description
View list		Select a value from the View list to define the items that are shown in the Parts table. The contents of the Parts tree is filtered using the selected value.
	Selected	Only items that are currently selected in the tree are displayed in the Parts table. If you click Select All in the Parts tree, all currently-displayed items in the tree are shown in the Parts table. To display all items in the tree in the Parts table: Select all items in the tree using the CTRL or Shift keys. Right-click in the tree and select Expand or use CTRL+E.
	Part	For the items selected in the tree, the contents of the Parts table are filtered to only display Parts.
	Pin	For the items selected in the tree, the contents of the Parts table are filtered to only display Pins.

Basic Tab

Displays the Basic values for the items selected in the Parts tree. Values are displayed for each item in the Selected column. These items can be filtered by clicking <Filter> in each column. Columns that are colored gray cannot be edited.

Item		Description
Part		The part that you select in the Parts tree.
Selected		For each selected item in the Parts tree, the associated type of item is displayed that is specified in the View list.
Pin Count		If a part is selected in the Parts tree, then the number of pins on the part is displayed. Note This column follows the filtering rules for alphanumeric columns. See: Filtering Values Without Using Wildcards
Value		If a part is selected in the Parts tree, then the attribute associated with it is displayed. This is specified in the Parts tab, in the Library Editor Main Window.
Pin Name		For a selected Ground or Power pin, the signal that is carried on the associated pin is displayed. This is specified in the Part Editor Panel: Detail Tab. The value is set in the Signal column in the Pin Assignment section.
Pin Type		For a selected pin, the pin type is displayed. This is specified in the Part Editor Panel: Detail Tab. The value is set in the Type column in the Pin Assignment section.
	INPUT	Indicates that the selected pin is in the input direction.
	OUTPUT	Indicates that the selected pin is in the output direction.
	BIDIRECT	Indicates that the selected pin is bidirectional.
	POWER	Indicates that the selected pin is a power connection.
	GROUND	Indicates that the selected pin is a ground connection.
	NC	Indicates that the selected pin is not connected.
Comment		Displays any comments that you specify in the Part Editor Panel: Properties Tab. The value is set in the Comment row in the System Part Attributes section.

Detail Tab

Displays details for the items that are selected in the Parts tree. Values are displayed for each item in the Selected column. These items can be filtered by clicking <Filter> in each column. Columns that are colored gray cannot be edited.

Item		Description
Part		Displays the part that you select in the Parts tree.
Selected		For each part that is selected in the Parts tree, the associated type of item is displayed that is specified in the View list.
Maximum Height		For a selected part, the distance is displayed between the top of the part and the board. This is specified in the Maximum Height (mm) column, in the Library Editor Panel: Parts Tab. The value must be greater than the Standoff Height value.
Standoff Height		For a selected part, the distance is displayed between the bottom of the part and the board. This is specified in the Standoff Height (mm) column, in the Library Editor Panel: Parts Tab.
Device Type		Displays whether a selected part is either an active or passive component. This is specified in the Device Type column, in the Library Editor Panel: Parts tab, or the Part Editor Panel: Properties tab.
	Active	The part is specified as an active component. Active components add energy to the signal that they pass.
	Passive	The part is specified as a passive component. Passive components cannot control current by means of another electrical signal. Examples of passive components are capacitors, resistors, inductors and diodes.
Passive Type		For a selected passive component, the component type is displayed.
	Capacitor	The selected part is a capacitor.
	Resistor	The selected part is a resistor.
	Inductor	The selected part is an inductor.
	Diode	The selected part is a diode.
	Other Passive	A passive type that has at least two nodes, and may contain a more or less complex inner circuitry.
	None	Passive series pins in the component are not considered.
Decap		If selected, then the relevant part is specified as a decoupling capacitor (decap). The icon for the part in the Parts tree is updated to indicate that it is a decoupling capacitor. You can add decoupling capacitors to the library using the Component Settings Dialog. In order to use them in a design, you must add them from the library. This is done by clicking Import Design Rule Library (Partial) or Import (Design Rule Library) in the Rule Editor Dialog, in eCADSTAR PCB Editor. Any two-pin device can be set as a decoupling capacitor. This includes the following passive components: Capacitor Resistor Inductor Diode
Jumper		If selected, then the relevant part is specified as a jumper. The icon for the part in the Parts tree is updated to indicate that it is a jumper. You can add a jumper to the library using the Component Settings Dialog. You must then set it as jumper in the Part Editor Panel: Detail Tab, Part Information section. In order to use them in a design, you must add them from the library. This is done by clicking Import Design Rule Library (Partial) or Import (Design Rule Library) in the Rule Editor Dialog, in eCADSTAR PCB Editor.
Permitted Placement Side		Displays the permitted placement side for a selected part. If you set a selected part as a decoupling capacitor (decap) or jumper by selecting Decap or Jumper in this tab, then you can specify the sides of the board on which it can be placed. Note You can also specify a part as a decoupling capacitor or jumper using the Component Settings Dialog in eCADSTAR Library Editor.
	Both	The part can be placed on either side of the board.
	Side A	The part can only be placed on side A.
	Side B	The part can only be placed on side B.
Permitted Placement Angle		If you set a selected part as a decoupling capacitor (decap) or jumper by selecting Decap. or Jumper in this tab, then you can set the permitted angles at which it can be placed on the board. You can select one or more of the following placement angles. 0 45 90 135 180 225 270 315 Note You can also specify a part as a decoupling capacitor or jumper using the Component Settings Dialog in eCADSTAR Library Editor.

 

Item	Description
(Always send selection)	The object you select in a Constraint Browser is selected on the Canvas in both the eCADSTAR PCB Editor and eCADSTAR Schematic Editor and in any instance of Constraint Browser.
Toggle Coupling Analysis	If toggled on, then signals that meet the criteria for being coupled are extracted when you extract a scenario in Constraint Browser. During simulation, this allows you to see the effects of them being in close proximity. Specify coupling criteria in the Extraction Options dialog.
Message	Displays messages that are relevant to the changes that you make in Constraint Browser.
Units	In Constraint Browser for eCADSTAR PCB Editor, the measurement units and delay units are displayed that you specify. Set these in eCADSTAR PCB Editor as follows. On the Status bar, select the required measurement units in the Units box.