A front end processor for 48X speed CD-ROM driver systems

This paper presents a new design methodology and experimental results of a front end processor for 48X speed CD-ROM drivers. The IC consists of a main signal processing block, a track error detecting block, a focus error dete cting block, an automatic laser power control block, a center servo control block and other necessary servo signal generating blocks. The proposed fro nt end processor for the 48X speed CD-ROM driver systems was designed with a 0.8um BICMOS technology process and the chip size is 3750um * 3750um. Exp erimental results show that its performance meets or exceeds the requiremen ts of the 48X speed CD-ROM driver systems.