Altera Avalon Verification IP Suite Manual do Utilizador Página 133

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May 2011 Altera Corporation Avalon Verification IP Suite User Guide
3. External Memory BFM
You can use external memory BFMs to verify the following aspects of external
memory interfaces:
Read and write operations
Memory initialization
1 External Memory BFMs are only supported in Qsys.
Functional Description
This section provides a functional description of the external memory BFM. It
includes the following topics:
“Block Diagram”
“Initializing the Memory Content” on page 3–2
“Reading and Writing to the Memory Content” on page 3–2
Block Diagram
Figure 3–1 shows a block diagram of how to use the external memory BFM with
tristate components.
Figure 3–1. Usage of External Memory BFM with Tristate Components
Altera FPGA
M
M
M
Nios II
Processor
TCM
S TCM
Generic Tristate
Controller
(SDRAM)
TCM
TCS
Tristate
Conduit
Pin
Sharer
Avalon-MM Master
Avalon-MM Slave
TCM
TCS
Tristate
Conduit
Bridge
Generic Tristate
Controller
(Flash
memory)
S
S
TCS
External
Memory
BFM
(SDRAM)
TCS
TCS
TCM
Avalon-TC Master
Avalon-TC Slave
TCS
TCS
Tristate
Conduit
Inverse
Pin
Sharer
TCM
TCM
External
Memory
BFM
(Flash memory)
Printed Circuit Board
Virtual Connection
Virtual Connection
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