A transmission unit for a driven vehicle wheel comprising an input shaft having a pinion and an output shaft having a ring gear which are parallel so that the input and the output shafts can move transverse relative to one another. The first pulse generation circuit, operable in the source clock domain, generates a source data pulse from a source data signal. A pipline portion approximates Sin using tables and interpolation and a subsequent stage multiplies this approximation by FracX. A method for forming the multiple-gate semiconductor structure is further disclosed.