Altera Mentor Verification IP Altera Edition AMBA AXI4-Li Manual do Utilizador descarregar pdf (Página 73)

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101

SystemVerilog Slave BFM

execute_read_data_phase()

Mentor Verification IP AE AXI4-Lite User Guide, V10.3

April 2014

execute_read_data_phase()

This task executes a read data phase (beat) previously created by the create_slave_transaction()

task. This phase can be blocking (default) or nonblocking, as defined by the transaction record

operation_mode field.

The execute_read_data_phase() task sets the RVALID protocol signal at the appropriate time

defined by the transaction record data_valid_delay field and sets the transaction_done field to 1

to indicate the whole read transaction has completed.

Example

// Declare a local variable to hold the transaction record.

axi4_transaction read_trans;

// Create a slave transaction and assign it to the local

// read_trans variable.

read_trans = bfm.create_read_transaction(0);

....

// Execute the read data phase for the read_trans transaction.

bfm.execute_read_data_phase(read_trans, 0); //Note: array element 0

Prototype

task automatic execute_read_data_phase

(

axi4_transaction trans

int index = 0 // Optional

);

Arguments

trans The axi4_transaction record.

index Data phase (beat) number.

Note: ‘0’ for AXI4-Lite

Returns

None

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