LV25810PEB is a DSP tuner LSI which adopts Low-IF. This IC has realized not only the significant reduction of external parts compare to the existing model by integration, but also the reconfiguration of specification according to customers’ need by setting and controlling the software of microcontroller, in which constant is programmable. Therefore, this IC curbs the total cost and realizes a tuner which corresponds to on-board type. This LSI implements serial bus (I2C) I/F, which realizes reduction of communication line with microcontroller. In mass production, it is effective to prevent troubles related to line layout, and to reduce area of the system main board. In addition to radio basic functions, LV25810PEB integrates a new original CMA circuit to enhance multipath noise rejection feature. Also, LV25810PEB includes an HD Radio decoder interface.