Set_data_valid_delay(), Axi3 example – Altera Mentor Verification IP Altera Edition AMBA AXI3/4TM User Manual

Page 311

VHDL AXI3 and AXI4 Master BFMs

set_data_valid_delay()

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

293

September 2013

set_data_valid_delay()

This nonblocking procedure sets the data_valid_delay field for a transaction that is uniquely
identified by the transaction_id field previously created by the

create_write_transaction()

procedure.

AXI3 Example

-- Create a write transaction with start address of 0.
-- Creation returns tr_id to identify the transaction.
create_write_transaction(0, tr_id, bfm_index, axi_tr_if_0(bfm_index));

-- Set the write channel WVALID delay to 3 ACLK cycles for the first data
-- phase (beat) of the tr_id transaction.
set_data_valid_delay(3, 0, tr_id, bfm_index, axi_tr_if_0(bfm_index));

-- Set the write channel WVALID delay to 2 ACLK cycles for the second data
-- phase (beat) of the tr_id transaction.
set_data_valid_delay(2, 1, tr_id, bfm_index, axi_tr_if_0(bfm_index));

Prototype

-- * = axi| axi4
-- ** = AXI | AXI4
set_data_valid_delay
(

data_valid_delay: in integer;
index : in integer; --optional
transaction_id : in integer;
bfm_id : in integer;
path_id : in *_path_t; --optional
signal tr_if : inout *_vhd_if_struct_t

);

Arguments

data_valid_delay

Write data channel WVALID delay measured in ACLK cycles
for this transaction. Default: 0.

index

(Optional) Array element index number for data_valid_delay.

transaction_id

Transaction identifier. Refer to

“Overloaded Procedure

Common Arguments”

on page 203 for more details.

bfm_id