Altera Avalon Verification IP Suite Bedienungsanleitung PDF herunterladen (Seite 90)

May 2011 Altera Corporation Avalon Verification IP Suite User Guide

1. Avalon-ST Source BFM

The Avalon-ST Source BFM implements the Avalon-ST interface protocol, a protocol

that is point-to-point, packet oriented, and drives unidirectional data. This BFM

component includes a procedural interface to control signals on the Avalon-ST

interface, including: ready, start of packet, and end of packet.

Figure 1–1 shows the top-level modules for a testbench that uses the Avalon-ST

Source BFM to verify an Avalon-ST sink component. In addition to the Altera-

provided Avalon-ST Source BFM component, the testbench typically includes a test

program and the DUT.

1 The BFMs allow illegal transactions so that you can test the error-handling

functionality of your DUT; consequently, the BFMs cannot be relied upon to guarantee

protocol compliance. The Avalon Monitors components verify protocol compliance.

f For more information about the Avalon-ST specification supported in SOPC Builder,

refer to the Avalon Interface Specifications (version 1.3).

f For more information about the Avalon-ST specification supported in Qsys, refer to

the Avalon Interface Specifications (version 2.0).

Functional Description

This section provides a functional description of the Avalon-ST Source BFM. It

includes the following topics:

“Timing” on page 1–2

“Block Diagram” on page 1–3

Figure 1–1. Top-Level Module to Verify an Avalon-ST Sink Device

Avalon-ST

Source BFM

Avalon-ST

Sink Component

DUT

Testbench

API

Function

Calls

Avalon-ST

Test Program

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Altera Avalon Verification IP Suite Bedienungsanleitung Seite 90