Altera Avalon Verification IP Suite Manuel d'utilisateur télécharger pdf (Page 60)

Chapter 3: Avalon-MM Slave BFM 3–17

Application Program Interface

May 2011 Altera Corporation Avalon Verification IP Suite User Guide

signal_command_received

signal_error_exceed_max_pending_reads

signal_max_response_queue_size

signal_min_command_queue_size

signal_fatal_error

Prototype:

signal_command_received

Arguments: None.

Returns:

void

Description: Notifies the testbench that a command has been detected on an Avalon-MM port. The

testbench can respond with a

set_command_wait_time

call on receiving this event to

dynamically back pressure the driving Avalon-MM master. Alternatively, the previously

set

wait_time

might be used continuously for a set of transactions.

Prototype:

signal_error_exceed_max_pending_reads

Arguments: None.

Returns:

void

Description: Notifies the testbench of the error condition, in which the slave has more than

max_pending_reads

pipelined read commands queued and waiting to be processed.

Prototype:

signal_max_response_queue_size.

Arguments: None.

Returns:

void

Description: Signals that the maximum pending transaction queue size threshold has been exceeded.

Prototype:

signal_min_response_queue_size.

Arguments: None.

Returns:

void

Description: Signals that the pending transaction queue size is below the minimum threshold.

Prototype:

signal_fatal_error

Arguments: None.

Returns:

void

Description: Notifies the testbench that a fatal error has occurred in this module.

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