Closed-Caption Decoder; Description; Block Diagram; Pins Used For Ccd0 And Ccd1 - Panasonic MN10285K User Manual

Closed-Caption Decoder

Description

9 Closed-Caption Decoder
MN102H75K/F75K/85K/F85K LSI User Manual
9.1 Description
The MN102H75K/85K contains two identical closed-caption decoder circuits,
CCD0 and CCD1. The decoders extract encoded captions from composite video
signals. Figure 9-1 provides a block diagram of the decoders, and section 9.3,
"Functional Description," on page 228, describes the circuit's main blocks: the
analog-to-digital converter, clamping circuit, sync separator circuit, data slicer,
controller, and sampling circuit. Note that this section describes CCD0, but all
descriptions apply to CCD1. Table 9-1 provides the pin names for each decoder.
Table 9-1 Pins Used for CCD0 and CCD1
Closed-Caption Decoder
CCD0
CCD1
9.2

Block Diagram

Figure 9-1 Closed-Caption Decoder Block Diagram
227

Panasonic

Pin Name
CVBS0 VREFHS
CVBS1 VREFLS
Panasonic Semiconductor Development Company
CLH0 CLL0
CLH0 CLL0