MCF5407AI162 Datasheet, PDF (531/546 Pages) Micro Commercial Components – Integrated Microprocessor Users Manual

Glossary of Terms and Abbreviations
The glossary contains an alphabetical list of terms, phrases, and abbreviations used in this
book.
A
Architecture. A detailed specification of requirements for a processor or
computer system. It does not specify details of how the processor or
computer system must be implemented; instead it provides a
template for a family of compatible implementations.
Autovector. A method of determining the starting address of the service
routine by fetching the value from a lookup table internal to the
processor instead of requesting the value from the system.
B
Branch folding. The replacement with target instructions of a branch
instruction and any instructions along the not-taken path when a
branch is either taken or predicted as taken.
Branch prediction.The process of guessing whether a branch will be taken.
Such predictions can be correct or incorrect; the term ‘predicted’ as
it is used here does not imply that the prediction is correct
(successful). Branch resolution.The determination of whether a
branch is taken or not taken. A branch is said to be resolved when the
processor can determine which instruction path to take. If the branch
is resolved as predicted, the instructions following the predicted
branch that may have been speculatively executed can complete (see
completion). If the branch is not resolved as predicted, instructions
on the mispredicted path, and any results of speculative execution,
are purged from the pipeline and fetching continues from the
nonpredicted path.
Burst. A multiple-beat data transfer.
C
Cache. High-speed memory containing recently accessed data and/or
instructions (subset of main memory).
Cache coherency. An attribute wherein an accurate and common view of
memory is provided to all devices that share the same memory
Glossary of Terms and Abbreviations
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