9.4.2. traceclk alignment

The TPIU does not offset the edges of traceclk from the edges of the trace data signals tracedata and tracectl. For compatibility with the maximum number of TPAs, ARM recommends you delay traceclk so its edges are in the middle of the stable phases of the data signals.

ARM recommends that, to support the widest range of targets at the maximum speed, TPAs support systems with a variety of alignments of traceclk relative to the data signals, including systems where edges of traceclk occur at the same time as transitions of the data signals.

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