Altera Mentor Verification IP Altera Edition AMBA AXI4-Stream - Manual (Page 79)

VHDL API Overview
Creating Transactions
Mentor Verification IP AE AMBA AXI4-Stream User Guide, V10.3 79
April 2014
The contents of the transaction record is detailed in Table 7-1 .
Table 7-1. Transaction Record Fields
Transaction Field Description
Protocol Transaction Fields
data An unsized array of bytes to hold the data of an
AXI4-Stream packet. The field content is transferred over
the TDATA protocol signals during a transaction.
byte_type An unsized array to hold the enumerated type of each
byte within an AXI4-Stream packet. The field content is
transferred over the TSTRB and TKEEP protocol signals
during a transaction. The types of byte are as follows:
AXI4STREAM_DATA_BYTE
AXI4STREAM_NULL_BYTE
AXI4STREAM_POS_BYTE
AXI4STREAM_ILLEGAL_BYTE
id A bit vector (of length equal to the TID protocol signal
bus width) to hold the data stream identifier of the data
packet. The field content is transferred over the TID
protocol signals during a transaction.
dest A bit vector (of length equal to the TDEST protocol
signal bus width) to hold the routing information for the
data stream packet. The field content is transferred over
the TDEST protocol signals during a transaction.
user_data An unsized bit vector (of length equal to the TUSER
protocol signal bus width) to hold the user-defined
sideband information. The field content is transferred
over the TUSER protocol signals during a transaction.
Operational Transaction Fields
valid_delay An unsized array of integers to hold the delay value of the
TVALID protocol signal (measured in ACLK cycles) for
each transfer within a packet. The field content is not
transferred over the protocol signals during a transaction.
ready_delay An unsized array of integers to hold the delay value of the
TREADY protocol signal (measured in ACLK cycles) for
each transfer within a packet. The field content is not
transferred over the protocol signals during a transaction.