LC7455M Datasheet (Sanyo Semicon Device) - Closed Caption Signal Extraction IC

LC7455M, Closed Caption Signal Extraction IC

Ordering number : EN5680 CMOS IC LC7455A, 7455M Closed Caption Signal Extraction IC Overview The LC7455A/M extracts the closed caption signal superimposed on a video signal during the vertical return period and, under the control of a clock signal provided by the decoder IC, transfers that signal to the IC (usually a microcontroller) that decodes the closed caption data.

The LC7455A/M supports four operating modes.

Modes 1 and 2 can be used for XDS.

In these modes, the LC7455A/M, in combinati

LC7455M Features

* on at least twice every frame (about 32 ms). When the second control operation is performed in a given frame, the CPDT ou