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Processors/DSPs  

Using multiply-accumulate operation instructions

Posted: 11 Aug 2011  Print Version  Bookmark and Share Subscribe 

Keywords:DSP  function instructions  MCU  arithmetic expressions 

[Summary of tips] The RX Family CPU core (RX) includes a 16bit × 16bit multiply-accumulate unit. When executing a 32bit × 32bit integer-multiply instruction (MUL instruction), which is normally used for arithmetic expressions or address calculations employing multiplication, the lower 32 bits of the 64bit result of the 32bit × 32b......
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