The car radio of the future will be based on digital signal processing techniques. The CAP is one step in this direction. This single chip CMOS device handles all the features and the audio processing that turn a radio into a car radio by means of DSP algorithms. Most of the functions are programmable. This is the chance for the car radio manufacturer to realize his own ideas using standard hardware. The purpose of this paper is to give a brief insight into the major building blocks of this new chip.