Specifications

Embedded System Tools Guide (EDK 6.2i) www.xilinx.com 53
UG111 (v1.4) January 30, 2004 1-800-255-7778
PBD Editor
R
b. Clicking Add.
c. Change the parameter
Value in the Explicit Parameter Values table.
d. Click Apply.
The value entered in the
Explicit Parameter Values table overrides the value
displayed in the
Default Parameter Values table.
Setting Symbol Properties
Symbol properties determine the appearance of an instance’s block in the workspace. You
can modify the size of the symbol drawing or the location of the bus pins on the symbol.
Some components (the MicroBlaze processor, for example) have a large number of bus
interfaces, only a few of which may be used in the block diagram. You can hide the bus
interface pins that are not in use, thus reducing the size of the symbol and making the
diagram easier to read.
To set symbol properties:
1. Double-click component instance in the workspace.
2. In the Properties dialog box, click the
Symbol entry in the tree view on the left side of
the dialog box.
3. To change the size of the symbol:
a. Enter a value in the
Min Width and/or Min Height fields.
b. Click Add.
4. To change the orientation (top, bottom, left, or right) of a symbol pin:
a. Select the pin in the
Available Pins table.
b. Click Add.
c. At the top of the
Pins on Symbol area, select the orientation you want (Top,
Bottom, Left, or Right).
d. Click
Apply.
The symbol in the workspace is updated to reflect the change.
Connecting a Component Bus Pin to a Bus
When you connect a component bus pin to a compatible bus, connection lines are drawn
from the pin to show the bus connection. All of the signals represented by the bus pin are
connected to the bus.
To connect a component bus pin to a bus:
1. Select
Add o Bus Connection or click the Add Bus Connection toolbar button.
2. Select the bus pin on the component instance you wish to connect to the bus.
To select the pin, move the cursor near the end of the pin until four squares appear to
help you locate the exact point. When the cursor is in the correct position to select the
pin, a box appears with information about the component instance and the type of pin
you are selecting.
3. Click anywhere on the bus to which you will connect the pin.