Altera Mentor Verification IP Altera Edition AMBA AXI4-St Manuel d'utilisateur Page 94

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Mentor Verification IP AE AMBA AXI4-Stream User Guide, V10.3
94
VHDL Master BFM
create_master_transaction()
April 2014
create_master_transaction()
This nonblocking procedure creates a master transaction with an optional burst_length
argument. All other transaction fields default to legal protocol values, unless previously
assigned a value. This procedure creates and returns the transaction_id argument.
Prototype
procedure create_master_transaction
(
burst_length : in integer; --optional
transaction_id : out integer;
bfm_id : in integer;
signal tr_if : inout axi4stream_vhd_if_struct_t
);
Arguments
burst_length (Optional) Number of transfers within a packet. Default: 1.
transaction_id Transaction identifier. Refer to “Overloaded Procedure
Common Arguments” on page 87 for more details.
bfm_id BFM identifier. Refer to “Overloaded Procedure Common
Arguments” on page 87 for more details.
tr_if Transaction signal interface. Refer to “Overloaded Procedure
Common Arguments” on page 87 for more details.
Protocol
Transaction
Fields
data Data array in bytes
byte_type Byte type array:
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
transaction_id Transaction identifier. Refer to “Overloaded Procedure
Common Arguments” on page 87.
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