M37151 datasheet(89/139 Pages) RENESAS | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

Part #	M37151

Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

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Manufacturer	RENESAS [Renesas Technology Corp]

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

and ON-SCREEN DISPLAY CONTROLLER

M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP

MITSUBISHI MICROCOMPUTERS

88

Rev. 1.0

8.11.13 OSD Output Pin Control

The OSD output pins R, G, B and OUT can also function as ports

P52–P55. Set the corresponding bit of the OSD port control register

(address 00CB16) to “0” to specify these pins as OSD output pins, or

to “1” to specify as the general-purpose port P5.

The input polarity of the HSYNC and VSYNC, and the output polarity of

signals R, G, B, OUT can be specified with the I/O polarity control

register (address 00D8). Set bits to “0” to specify positive polarity;

“1” to specify negative polarity (refer to Figure 8.11.14).

The structure of the OSD port control register is shown in Figure

8.11.29.

Fig. 8.11.29 OSD Port Control Register

1

b7 b6 b5 b4 b3 b2 b1 b0

OSD port control register (PF) [Address 00CB16]

B

Name

Functions

After reset

R W

OSD Port Control Register

0

2

0

3

0 : G signal output

1 : Port P53 output

0

Fix these bits to “0.”

Fix this bit to “1.”

Fix this bit to “0.”

R —

R W

W

0, 1

Port P53 output signal

selection bit (PF3)

4

0 : R signal output

1 : Port P54 output

0

R W

Port P54 output signal

selection bit (PF4)

0R W

0 : B signal output

1 : Port P52 output

Port P52 output signal

selection bit (PF2)

5

0 : OUT signal output

1 : Port P55 output

Port P55 output signal

selection bit (PF5)

7

0

Indeterminate —

6

0

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