Renesas PCA7400 Uživatelský manuál stáhnout pdf (Strana 49)

MITSUBISHI MICROCOMPUTERS

M37271MF-XXXSP

M37271EF-XXXSP, M37271EFSP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER

and ON-SCREEN DISPLAY CONTROLLER

The OSD circuit has an extended display mode. This mode allows

multiple lines (16 lines or more) to be displayed on the screen by

interrupting the display each time one line is displayed and rewriting

data in the block for which display is terminated by software.

Figure 50 shows the configuration of OSD character. Figure 51 shows

the block diagram of the OSD control circuit. Figure 52 shows the

structure of the OSD control register. Figure 53 shows the structure

of the block control register.

Fig. 50. Configuration of OSD character

16 dots

26 dots

20 dots

Underline area

Blank area

: Displayed only in CCD mode.

Blank area

26 dots

20 dots

Character font

26 dots

20 dots

OSD mode

CC mode

Extra font

EXOSD mode

16 dots

logical

sum

(OR)

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 97 98

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Renesas PCA7400 Uživatelský manuál Strana 49