Avalon Verification IP Suite: User Guide

ID 683439
Date 2/17/2022
Document Table of Contents

9.1. Timing

The following figure illustrates the timing for an Avalon-ST Sink BFM when it is ready to receive data from an Avalon-ST source. In the first instance, the sink is not ready when the source has data. In the second instance, the sink is ready but the source does not initially have valid data.
Figure 16. Avalon-ST Source and Sink Timing

Table 14.  Key to AnnotationsThe following table describes the annotations used in the figure above.
Symbol Description
Tidle The idle time between transactions. This time is reported by the command get_transaction_idles.
Ssnk_rdya Signals the sink has asserted ready. The event name is signal_snk_ready_assert.
Str Signals the transaction has been received and queued. The event name is signal_transaction_received.
Ssnk_rdyd Signals the sink is not ready. The event name is signal_snk_ready_deassert.