Set_ready_delay(), Example – Altera Mentor Verification IP Altera Edition AMBA AXI4-Stream User Manual

Page 143

VHDL Slave BFM

set_ready_delay()

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

143

April 2014

set_ready_delay()

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

create_slave_transaction()

procedure.

The ready_delay array element is identified by the optional index argument. If no index is
supplied, then the first ready_delay is accessed in the array.

Example

-- Create a slave transaction.
-- Creation returns tr_id to identify the transaction.
create_slave_transaction(tr_id, bfm_index,

axi4stream_tr_if_0(bfm_index));

-- Set the TREADY delay to 3 ACLK cycles for the first transfer
-- of the tr_id transaction.
set_ready_delay(3, 0, tr_id, bfm_index, axi4stream_tr_if_0(bfm_index));

-- Set the TREADY delay to 2 ACLK cycles for the first transfer
-- of the tr_id transaction.
set_ready_delay(2, 1, tr_id, bfm_index, axistream_tr_if_0(bfm_index));

Prototype

set_ready_delay
(

ready_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

ready_delay

Ready delay array to hold TREADY delays measured in ACLK
cycles for this transaction. Default: 0.

index

(Optional) Array element index number for ready_delay.

transaction_id

Transaction identifier. Refer to “

Overloaded Procedure

Common Arguments

” on page 87 for more details.

bfm_id