Altera Mentor Verification IP Altera Edition AMBA AXI4-Li Bedienungsanleitung PDF herunterladen (Seite 31)

SystemVerilog API Overview

Creating Transactions

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

April 2014

Operational Transaction Fields

read_or_write An enumeration to hold the read or write control flag. The

types of read_or_write are:

AXI4_TRANS_READ

AXI4_TRANS_WRITE

address_valid_delay An integer to hold the delay value of the address channel

AWVALID and ARVALID signals (measured in ACLK

cycles) for a read or write transaction, respectively.

data_valid_delay An integer to hold the delay value of the data channel WVALID

and RVALID signals (measured in ACLK cycles) for a read or

write transaction, respectively.

write_response_valid_delay An integer to hold the delay value of the write response channel

BVALID signal (measured in ACLK cycles) for a write

transaction.

address_ready_delay An integer to hold the delay value of the address channel

AWREADY and ARREADY signals (measured in ACLK

cycles) for a read or write transaction, respectively.

data_ready_delay An integer to hold the delay value of the data channel

WREADY and RREADY signals (measured in ACLK cycles)

for a read or write transaction, respectively.

write_response_ready_delay An integer to hold the delay value of the write response channel

BREADY signal (measured in ACLK cycles) for a write

transaction.

gen_write_strobes Automatically correct write strobes flag. Refer to Automatic

Generation of Byte Lane Strobes for details.

operation_mode An enumeration to hold the operation mode of the transaction.

The two types of operation_mode are:

AXI4_TRANSACTION_NON_BLOCKING

AXI4_TRANSACTION_BLOCKING

write_data_mode An enumeration to hold the write data mode control flag. The

types of write_data_mode are:

AXI4_DATA_AFTER_ADDRESS

AXI4_DATA_WITH_ADDRESS

transaction_done A bit to hold the done flag for a transaction when it has

completed.

Table 2-1. Transaction Fields (cont.)

Transaction Field Description

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 412 413

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Altera Mentor Verification IP Altera Edition AMBA AXI4-Li Bedienungsanleitung Seite 31