All PSoC Application Notes

AN2038: Signed Multi-Byte Multiplication

A built in MAC (Multiply/Accumulate) assists the PSoCTM MCU with digital signal-processing applications. The MAC takes two signed single-byte inputs as multiplicands and generates a signed 2’s compliment result. But what if multi-byte signed multiplication is needed? This Application Note will show that with a little understanding of the interaction between singed and unsigned values, fast signed multi-byte multiplication algorithms can easily be developed.