Abstract: Embodiments of the present invention relate to a programmable logical semiconductor device which is tailored for implementing digital signal processing functions. The programmable logical semiconductor device comprises one or more functional user modules and at least one of the functional user modules is configurable to implement digital signal processing functions. The programmable logical semiconductor device has analog connections that are capable of being coupled to at least one of the functional user modules and to route signals to the functional user module, including an analog signal processor coupled to the analog connection. The programmable logical semiconductor device also has one or more registers coupled to the functional user modules for storing coefficients to configure the functional user modules. One or more of the user modules comprises a switched capacitor filter.