Overview

The LA9242M is an analog signal processing and servo control bipolar IC designed for use in compact disc players ; a compact disc player can be configured by combining this IC with a CD-DSP such as the LC78922E and LC78620E, with a small number of additional components required. In addition, this IC allows CD-RW disk playback due to the on-chip gain switching function.

Features

• The following automatic adjustment functions are built in.

• Focus offset auto cancel : FE (pin 20)

• Tracking offset auto cancel : TE (pin 7).

• EF balance auto adjustment.

• RF level AGC function.

• Tracking servo gain RF level following function.

• Focus search smoothing setting pin : FSC (pin 46)

• EF balance adjustment variable range setting pin : (pin 47)

• Focus search mode switching pin : (pin 55)

• Play disc (Normal, CD-RW) mode switching pin : (pin 38)