Specifications

Embedded System Tools Guide (EDK 6.2i) www.xilinx.com 225
UG111 (v1.4) January 30, 2004 1-800-255-7778
Global Port
R
Format
BUS_INTERFACE MOPB=opb_bus_inst, POSITION=integer
Where integer is a positive integer. Highest position is "1".
The order of assignment is retained as listed in the MHS in top-to-bottom order.
Note: When specifying bus interfaces of master-slave like MSPLB or MSOPB, then there is a
possibility that PlatGen will error out when you have more masters than slaves on the bus. The
reason is the MSPLB or MSOPB is assigned a position. This means the master interface and the
slave interface must reside at the same position. There is a possibility that the assigned position of
the slave interface is out of range to the number of slaves on the bus.
Global Port
A global port outside of a BEGIN-END block can have the following keywords:
DIR
The driver direction of a signal is specified by the DIR keyword.
Format
PORT mysignal = "", DIR=direction
Where direction is either INPUT, IN, I, OUTPUT, OUT, O, INOUT, or IO.
Table 15-5: Global Port Keywords
Keyword Values Default Definition
DIR IN, INPUT, I
OUT, OUTPUT, O
INOUT, IO
ODirection mode
EDGE RISING
FALLING
No Default Interrupt edge sensitivity
(deprecated)
LEVEL HIGH
LOW
No Default Interrupt level sensitivity
(deprecated)
SENSITIVITY EDGE_FALLING
EDGE_RISING
LEVEL_HIGH
LEVEL_LOW
No Default Interrupt sensitivity
SIGIS CLK
INTERRUPT
RST
No Default Signal classification
VEC [A:B] No Default Vector dimension