Hitachi H8S/2199 Hardware Manual page 1136

Single-chip microcomputer

Table of Contents

An example of the external circuit for the OSD is shown in figure E.5.

The circuit configuration and values for the filter section will vary according to the wiring

capacitance, impedance, etc.

When designing the board, an appropriate filter should be configured, taking account of the wiring

load. Noise prevention measures also need to be taken when designing the board.

Note: Reference values are shown.

The board floating capacitance and wiring resistance must also

be taken into consideration in determining the values.

4. Sync Separator and Data Slicer

Examples of the external circuits for the sync separator and data slicer are shown in figures E.6 to

The sync signal separation sources can be selected from the following three: (1) CVin2, (2)

Csync, and (3) separate Hsync and Vsync signals. The external circuit configuration will vary

depending on the separation source.

When the data slicer is used, CVin2 is recommended as the separation source. When Csync or

Hsync and Vsync are selected as the source, connect to CVin2 the same external circuit as when

CVin2 is selected as the separation source.

Rev. 1.0, 02/00, page 1134 of 1141

Figure E.5 Example of External Circuit for OSD