The foll is from a manual on the 21XX ADSP precessors from Analog Devices.
The ALUperforms a standard set of arithmetic and logic operations in addition to division primitives. The MAC performs single-cycle multiply, multiply/add and multiply/subtract operations. The Shifter performs logical and arithmetic shifts, normalization, denormalization,
and derive exponent operations. The Shifter implements numeric format control including multiword floating point representations.
As far as i remember, DSP normalisation of a sequence of input impulses means they are given the same characteristic time distance between each arrival of the next sample OR all converted to a value which makes further processing easier, ie unity.