Processor Signal Descriptions

A.1 About the processor signal descriptions

The tables in this appendix list the processor signals, along with their dimensions and direction, input or output, and a high-level description. Each table also has a clocking column, that indicates by which clock a signal is sampled or driven. All signals are sampled on or driven from the rising edge of the clock. The clocking column can also contain the following information:

Any

Means the input is synchronised inside the processor, so the input can be driven

 

from any clock.

Tie-off

Means the input must be tied to a fixed value.

Reset

Means the input must only be changed under reset.

Clocking is listed for all outputs, though some are typically synchronized into a different clock before use.

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ARM R4F, r1p3 manual About the processor signal descriptions, Any, From any clock