As is the case in non-segmented operation, a packet can be aborted on the
segmented interface either explicitly (asserting ERR) or implicitly (deasserting
tvalid without first completing the affected frame).
The following diagram shows both cases. To keep the diagram compact, segments 0 and 2-5 are omitted. Assume they contain valid transactions.
In the figure, Frame A has started in cycle #4 (in Segment 0, not shown) and continues through to the end of Segment 5. An explicit frame transfer abort occurs in Segment 1 of cycle #5.
Next, a new frame (Frame B) begins in segment 1 of cycle #7, but this frame is
aborted implicitly in cycle #8 when
deasserted. The diagram ends with Frame C being transferred. It is acceptable to begin a new
frame in the segment immediately following an aborted frame. There is no need for any idle bus