Altera Avalon Verification IP Suite - Manual (Page 50)

The BFMs allow illegal response transactions so that you can test the error-handling functionality
of your DUT. Consequently, the BFMs cannot be relied upon to guarantee protocol compliance. The
Avalon Monitor components verify protocol compliance.
Figure 6-1: Top-Level Module to Verify an Avalon-MM Master
Testbench
HDL HDL
Avalon-MM
read or write
response or
waitrequest
Test Program
Avalon-MM
Slave BFM
DUT
Avalon-MM
Master
Note:
Related Information
Avalon Interface Specifications
Timing
The following timing diagram illustrates the sequence of events for an Avalon-MM Slave BFM. It shows the
slave BFM responding to interleaved writes and reads when the
readdatavalid
signal is present.
Avalon-MM Slave BFM Altera Corporation
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Timing 6-2