Altera Mentor Verification IP Altera Edition AMBA AXI4-St Bedienungsanleitung PDF herunterladen (Seite 50)

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

SystemVerilog Slave BFM

create_slave_transaction()

April 2014

create_slave_transaction()

This nonblocking function creates a slave transaction. All transaction fields default to legal

protocol values unless previously assigned a value. It returns with the axi4stream_transaction

record.

Example

// Create a slave transaction.

trans = bfm.create_slave_transaction();

Prototype

function automatic axi4stream_transaction

create_slave_transaction();

Protocol

Transaction

Fields

burst_length (Optional) Number of transfers within a packet. Default: 1.

data Data array in bytes.

byte_type Byte type:

AXI4STREAM_DATA_BYTE; (default)

AXI4STREAM_NULL_BYTE;

AXI4STREAM_POS_BYTE;

AXI4STREAM_ILLEGAL_BYTE;

id Data stream identifier.

dest Destination routing information.

user_data User data array.

Operational

Transaction

Fields

operation_

mode

Operation mode:

AXI4STREAM_TRANSACTION_NON_BLOCKING;

AXI4STREAM_TRANSACTION_BLOCKING; (default)

valid_delay TVALID delay measured in ACLK cycles for this transaction.

(default = 0).

ready_delay TREADY delay measured in ACLK cycles for this transaction.

(default = 0).

transfer_done Transfer done flag array for this transaction.

transaction_

done

Transaction done flag for this transaction.

Returns

trans The axi4stream_transaction record.

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