Altera Mentor Verification IP Altera Edition AMBA AXI4-Stream - Manual (Page 106)

Mentor Verification IP AE AMBA AXI4-Stream User Guide, V10.3 106
VHDL Master BFM
set_valid_delay()
April 2014
set_valid_delay()
This nonblocking procedure sets the valid_delay field for a master transaction that is uniquely
identified by the transaction_id field previously created by the
create_master_transaction()
procedure.
The valid_delay array element is identified by the optional index argument. If no index is
supplied, then the first valid_delay is accessed in the array.
Example
-- Create a master transaction containing 3 transfers
-- Creation returns tr_id to identify the transaction.
create_master_transaction(3, tr_id, bfm_index,
axi4stream_tr_if_0(bfm_index));
-- Set the TVALID delay to 3 ACLK cycles for the first transfer
-- of the tr_id transaction.
set_valid_delay(3, 0, tr_id, bfm_index, axi4stream_tr_if_0(bfm_index));
-- Set the TVALID delay to 2 ACLK cycles for the second transfer
-- of the tr_id transaction.
set_valid_delay(2, 1, tr_id, bfm_index, axi4stream_tr_if_0(bfm_index));
Prototype set_valid_delay
(
valid_delay: in integer;
index : in integer; --optional
transaction_id : in integer;
bfm_id : in integer;
signal tr_if : inout axi4stream_vhd_if_struct_t
);
Arguments valid_delay Valid delay array to store TVALID delays measured in ACLK
cycles for this transaction. Default: 0.
index (Optional) Array element index number for valid_delay.
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.
Returns None