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Question about accumulator word length in A8 core

Robert

Hi,

I have used some 32-bit microprocessor cores (non-ARM), which has a long word-length accumulator for some DSP operations, to avoid over-flow etc. After I check A8 core document, it is a surprise that I do not see any about this specification. It looks like it is a 32-bit as the register. For a FIR filter, 24-bit data/16-bit coefficients, at least 48-bit is needed for the accumulator. How to get satisfying results with A8 core?

Thanks,

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