Specifications

Embedded System Tools Guide (EDK 6.2i) www.xilinx.com 93
UG111 (v1.4) January 30, 2004 1-800-255-7778
Importing an Existing Peripheral
R
port have drop-down lists that list the ports on the peripheral being imported. The user
needs to select the peripheral port which corresponds to each bus-interface port.
Interrupt Signals
Each peripheral needs to identify its interrupt signals and certain special attributes
associated with the interrupt. These interrupts are processed by the interrupt controller in
the processor system.
This panel presents a one column table that lists the non-bus interface ports on the
peripheral. You check off the interrupt ports.
You also need to describe the characteristics of the selected interrupt signal. You do this by
clicking on the radio buttons to the right. The various characteristics are as follows:
x Interrupt sensitivity
The interrupt signal may be falling/rising edge sensitive, or low/high level sensitive.
x Relative priority
You can choose between Low, Medium or High. This information is used by some of
the EDK tools to automatically prioritize the many interrupt generators in the system
a peripheral is instantiated in.
If you do not have interrupts, check the
No Interrupts check-box. Otherwise you cannot
move to the next panel.
Advanced Attributes on Ports and Parameters
The Platform Specification Format (PSF) in the EDK supports a large number of attributes
on ports and parameters. These attributes help the tools in the EDK automatically wire up
the peripheral to the bus, connect the interrupt lines, display more readable names,
provide short descriptions of port and parameter functionality, etc.
This tool will present screens that allow you to input the values of the attributes through a
table based interface. You will see two tables:
Figure 4-18: Identify Interrupt Signals