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Chapter 3: Avalon-ST Sink BFM 3–3
Functional Description
May 2011 Altera Corporation Avalon Verification IP Suite User Guide
Block Diagram
Figure 3–3 provides a block diagram of the Avalon-ST Sink BFM. This figure
illustrates that the BFM includes the following five major blocks:
Avalon-ST Sink API—Provides methods to get Avalon-ST transactions and control
the
ready
signal.
Transaction Descriptor—Accumulates the fields of an Avalon-ST command.
Avalon-ST Physical Driver—Asserts and deasserts the
ready
signal to the system
interconnect fabric.
Physical Bus Monitor—Monitors the physical layer and collects transactions.
Public Events—Signals the events described in the API.
Figure 3–3. Block Diagram of the Avalon-ST Sink BFM
Transaction Descriptor
Public
Events
Avalon-ST Source BFM API
(Transaction Level Commands)
Avalon-ST Interface
(Physical Layer)
Transaction
Queue
Physical
Bus Monitor
Physical
Bus Driver
valid
data
channel
startofpacket
endofpacket
error
empty
ready
pop_transaction()
(API Call)
set_ready()
(API call)
get_transaction()
(API call)
Signals
Events
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