M37225M6_15 datasheet(71/128 Pages) RENESAS

Part #	M37225M6

Description	SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

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Manufacturer	RENESAS [Renesas Technology Corp]

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M37225M6/M8/MA/MC-XXXSP, M37225ECSP

Rev.1.00

Nov 01, 2000

page 69 of 124

REJ03B0136-0100Z

(4) Character color

Character colors are specified by RA1 to RA3 of OSD RAM.

Color data are set by color register i (CO1 to CO8: addresses 00E616

to 00E916, 00EC16 to 00EF16) in advance, and 8 kinds of color regis-

ter i are specified by color codes.

(5) Character background color

Character background are specified by color register i as same as

character color.

Note : The character background is displayed in the following part:

(character display area) – (character font) — (border) – (BUTTON display area)

Accordingly, the character background color and the color signal for

these sections cannot be mixed.

Fig. 8.10.19 Color register i (i = 1 to 8)

(6) OUT1, OUT2 signals

OUT1 signal is used to erase a back ground TV image. The output

waveform of OUT1 signal is controlled by combining the following

bits; the display mode selection bits (bits 0 to 2 of the block i control

register), the border type selection bit (bit 1 of the OSD control regis-

ter), and the OUT1 output control bit (bit 6 of color register i).

Figure 8.10.20 and 8.10.21 shows the output example of R, G, B,

and OUT1.

OUT2 signal is used to change the luminance of a background TV

image. The output waveform of OUT2 signal is blank output and is

controlled per character unit by RA6 of OSD RAM.

b7 b6 b5 b4 b3 b2 b1 b0

Color register i (CO1 to CO8) (i=1 to 8) [Addresses 00E616 to 00E916, 00EC16 to 00EF16]

B

Name

Functions

After reset

R W

Color Register i

0

Indeterminate R W

1

G signal output selection

bit (COi1)

0: No output

1: Output

R W

2

B signal output selection

bit (COi2)

0: No output

1: Output

R W

3

R signal output (background)

selection bit (COi3)

0: No output

1: Output

R W

4

G signal output (background)

selection bit (COi4)

0: No output

1: Output

R W

5

B signal output (background)

selection bit (COi5)

0: No output

1: Output

R W

6

OUT1 output control bit

(COi6)

0: Character output

1: Blank output

R W

7

0

R —

R signal output selection

bit (COi0)

0: No output

1: Output

Nothing is assined. This bit is a write disable bit.

When this bit is read out, the value is “0.”

Indeterminate

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