Accumulator Test mode aids in diagnostics of the accumulator and result formatting hardware,
and can be used to test the integrity of the logic. It is enabled by configuring the Mode bit
field in the Command register (COMMAND.MODE) to ACCTEST.
The Accumulator Test mode is used as follows:
Writing to the Result (RESULT) register
writes directly to the accumulator
Writing to the Sample (SAMPLE) register
accumulates the written value in the accumulator
Reading the Result register will read the
accumulator value
Note: Transitioning out of Accumulator Test mode clears the
internal accumulator, as well as the RESULT and SAMPLE registers.
Figure 33-8. Accumulator Test
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