M37274EFSP datasheet(96/148 Pages) RENESAS

96 / 148 page

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

and ON-SCREEN DISPLAY CONTROLLER

M37274EFSP

PRELIMINARY

Notice:

This

is not

a final

specification.

Some

paramentic

limits

are

subject

to change.

MITSUBISHI MICROCOMPUTERS

(13) Scan Mode

M37274EFSP has the bi-scan mode for corresponding to HSYNC of

double speed frequency. In the bi-scan mode, the vertical start dis-

play position and the vertical size is two times as compared with the

normal scan mode. The scan mode is selected by bit 1 of the OSD

control register (refer to Figure 64).

(14) Window Function

This function sets the top and bottom boundary of display limit on a

screen. The window function is valid only in the CC mode. The top

boundary is set by window H registers 1 and 2. The bottom bound-

ary is set by window L registers 1 and 2. This function is turned on

and off by bit 5 of the OSD control register (refer to Figure 64).

The window H registers 1 and 2 is shown in Figures 96 and 97, of

window L registers 1 and 2 is shown in Figures 98 and 99.

Notes 1: Set values except “0016” and “0116” to the window H regis-

ter 1 when the window H register 2 is “0016.”

2: Set the register value fit for the following condition :

(WH1 + WH2) < (WL1 + WL2)

Bit 1 of OSD control register

Vertical display start position

Vertical dot size

Table 18. Setting for Scan Mode

Normal Scan

Value of vertical position register ! 1H

1TC ! 1/2H

1TC ! 1H

2TC ! 2H

3TC ! 3H

Bi-Scan

Value of vertical position register ! 2H

1TC ! 1H

1TC ! 2H

2TC ! 4H

3TC ! 6H

Scan Mode

Parameter

Fig. 95. Example of Window Function

EXOSD mode

Window

FG H

CC mode

M N O

CC mode

PQ R

CC mode

OSD mode

Bottom

boundary

of window

Top

boundary

of window

Screen

A BCD E

W X

M37274EFSP датащи(PDF) 96 Page - Renesas Technology Corp

M37274EFSP датащи(HTML) 96 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL