Altera Avalon Verification IP Suite Uživatelský manuál stáhnout pdf (Strana 63)

4–2 Chapter 4: Avalon-MM Slave BFM with Avalon-ST API Wrapper

Avalon Verification IP Suite User Guide May 2011 Altera Corporation

In Figure 4–1, the API call interface and Avalon-ST call and return interface operate in

separate clock domains with

av_clk

synchronizing the FPGA logic and

api_clk

synchronizing the Avalon-ST translation interface. The Avalon-ST interface, which is

not part of the actual hardware design, operates at a much faster frequency than the

Avalon-MM Slave BFM interface, enabling 1000 API calls and returns to be issued to

the BFM per Avalon clock cycle.

For every function call in the BFM, there is a channel identifier that stores the fixed

mapping between channel number and the function.

<$install_dir>/ip/altera/sopc_builder_ip/verification/lib/

altera_avalon_components_pkg.vhd defines the following function calls:

■

MM_SLV_SIGNAL_FATAL_ERROR

■

MM_SLV_SIGNAL_ERROR_EXCEED_MAX_PENDING_READS

■

MM_SLV_SIGNAL_COMMAND_RECEIVED

■

MM_SLV_SIGNAL_RESP_ISSUED

■

MM_SLV_SIGNAL_RESERVED_4

■

MM_SLV_SIGNAL_RESERVED_5

■

MM_SLV_SIGNAL_RESERVED_6

■

MM_SLV_SIGNAL_RESERVED_7

With the exception of the API wrapper, the Avalon-MM Slave BFM with Avalon-ST

API Wrapper component is identical to the Avalon-MM Slave BFM. For more

information about this component, refer to Chapter 3, Avalon-MM Slave BFM.

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Altera Avalon Verification IP Suite Uživatelský manuál Strana 63