Altera Avalon Verification IP Suite - Manual (Page 125)

1–2 Chapter 1: Conduit BFM
Parameters
Avalon Verification IP Suite User Guide May 2011 Altera Corporation
At the beginning of the simulation, registers that store the data that is sent to the
output ports are empty. The Conduit BFM drives ‘x’ to the output port until you
rewrite the registers by calling the
set_ < role name > API. Initially, bidirectional ports
work as input ports. You can change its functionality by calling the
set_ < role name > _oe API. The Conduit BFM prints out a message when the behavior
of the bidirectional port changes from an input port to an output port and vice versa.
Bidirectional ports drive register values to the interface when this API is set to 1.
Otherwise, bidirectional ports work as input ports. You can call the
get_ < role name >
API to obtain the value coming from the input and bidirectional ports.
Parameters
The Conduit BFM supports signals that interface to external memory devices, such as
address, data, and control signals that have the signal type
export .
1 For more information about Avalon Conduit interfaces supported in Qsys, refer to the
Avalon Interface Specifications (version 2.0) .
Table 1–1 lists the parameter settings for the Conduit BFM.
Table 1–1. Conduit BFM Parameter Settings
Option Default Value Legal Values Description
Role — Any string Specifies the role name of each port.
Width 1 1–1024 Specifies the port width.
Direction input
input, output,
bidir
Specifies the direction of the signal.