Specifications

Embedded System Tools Guide (EDK 6.2i) www.xilinx.com 255
UG111 (v1.4) January 30, 2004 1-800-255-7778
Port
R
LONG_DESC
Allows a long description of the port to be displayed by the GUI tools. The long description
allows the GUI tools to display a hover help. No default.
Format
PORT OPB_Clk="", DIR=I, SIGIS=CLK, BUS=SOPB, LONG_DESC="Clock from OPB"
SENSITIVITY
The interrupt sensitivity of an interrupt signal is specified by the SENSITIVITY keyword.
This supersedes the EDGE and LEVEL keywords.
Format
PORT interrupt="", DIR=O, SENSITIVITY=value, SIGIS=INTERRUPT
Where the value is either EDGE_FALLING, EDGE_RISING, LEVEL_HIGH or
LEVEL_LOW.
SIGIS
The class of a signal is specified by the SIGIS keyword.
Format
PORT mysig="", DIR=O, SIGIS=value
Where the value is either CLK, INTERRUPT, or RST. The following table lists SIGIS usage:
THREE_STATE
The THREE_STATE keyword enables/disables tri-state expansion. This supersedes the
3STATE keyword.
Table 16-19: SIGIS Usage
SIGIS Usage
CLK x XPS
i Display all clock signals
x PlatGen
i If system is the top-level, then clock buffer
insertion is done on all input clocks of the
system
i For all bus peripherals, the clock signals are
automatically connected to the clock input of
the bus
INTERRUPT
x XPS
i Display all interrupt signals
x PlatGen
i Encodes the priority interrupt vector
RST
x XPS
i Display all reset signals