Specifications

54 www.xilinx.com Embedded System Tools Guide (EDK 6.2i)
1-800-255-7778 UG111 (v1.4) January 30, 2004
Chapter 2: Xilinx Platform Studio (XPS)
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If the type of bus is compatible with the type of pin, connection lines are drawn to
show the bus connection.
Connecting Ports
You can create nets to connect ports on component instances. To create a net, you assign the
same net name to all of the ports you want to connect.
Port connections cannot be seen as nets drawn on the block diagram. All of the nets shown
on the block diagram are bus connections.
To connect ports on two component instances:
Note: This procedure describes how to connect a port on one component instance to a port on
another component instance. Using a similar procedure, you can connect ports on more than two
component instances, connect multiple ports at the same time, or create system ports.
1. Double-click one of the component instances you want to connect.
2. In the Properties dialog box, click the
Ports entry in the tree view on the left side of the
dialog box.
3. In the box under
Show Ports, choose the type of ports appearing in the ports list
(
With No Default Nets, With Default Nets, All Ports, or New Filter).
4. Note that ports With Default Nets need not be connected, they will be automatically
connected by PlatGen. The user needs to connect these ports only when the connection
is not desired.
5. In the
Show Ports list, select the a port to which you will assign a net.
6. Click
Add.
The selected port is copied to the Explicit Port Assignments list.
7. In the
Explicit Port Assignments list, modify the fields describing the port
connection (
Polarity, Range, etc.) and assign the net connected to the port a Net
Name
.
8. Perform Steps 1 through 6 for the second component instance. If you assign the same
Net Name to a port on each component instance, the ports are connected.
Viewing and Editing System Ports
You can view and edit the all of the system ports (that is, all of the ports designated
External) in a single dialog box. Using this dialog box, you can also add power and ground
ports to the system.
To view and edit system ports:
1. Double-click an area in the workspace that does not contain any objects.
2. If you want to add power or ground system ports to the design:
a. Click Add.
b. In the Add External Port dialog box, enter a
Port Name and select GND (net_gnd)
or
VCC (net_vcc).
c. In the Add External Port dialog box, Click
OK.
3. Edit the entries in the
System Ports table as desired.
Some notes about the table:
i Fields that the you can edit are displayed in white; read-only fields are displayed
in grey.