Altera Mentor Verification IP Altera Edition AMBA AXI3/4T Instrukcja Użytkownika Pobierz pdf (Strona 72)

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Mentor VIP AE AXI3/4 User Guide, V10.2b

SystemVerilog AXI3 and AXI4 Master BFMs

execute_write_data_phase()

September 2013

execute_write_data_phase()

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

create_write_transaction() task. This phase can be blocking (default) or nonblocking, defined

by the transaction record operation_mode field.

The execute_write_data_phase() sets the WVALID protocol signal at the appropriate time

defined by the transaction record data_valid_delay field and sets the data_beat_done array

index element field to 1 when the phase completes.

AXI3 Example

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

axi_transaction write_trans;

// Create a write transaction with start address of 0 and assign

// it to the local write_trans variable.

write_trans = bfm.create_write_transaction(0);

....

// Execute the write data phase for the first beat of the

// write_trans transaction.

bfm.execute_write_data_phase(write_trans, 0, last);

// Execute the write data phase for the second beat of the

// write_trans transaction.

bfm.execute_write_data_phase(write_trans, 1, last);

Prototype

// * = axi | axi4

task automatic execute_write_data_phase

(

*_transaction trans,

int index = 0, // Optional

output bit last

);

Arguments trans

The *_transaction record.

index Data phase (beat) number.

last Flag to indicate that this phase is the last beat of data.

Returns

None

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