參數(shù)資料
型號(hào)： M37281EKSP
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述： 單芯片8位CMOS微機(jī)隱蔽字幕解碼器和屏幕顯示控制器
文件頁數(shù)： 83/172頁
文件大小： 1319K
代理商： M37281EKSP
Rev.1.01 2003.07.16 page 83 of 170
M37281MAH
–
XXXSP,M37281MFH
–
XXXSP,M37281MKH
–
XXXSP, M37281EKSP
8.11.6 Memory for OSD
There are 2 types of memory for OSD : OSD ROM (addresses
10800
16
to 157FF
16
and 18000
16
to 1ACFF
16
) used to specify char-
acter dot data and OSD RAM (addresses 0700
16
to 07A7
16
and
0800
16
to 0FDF
16
) used to specify the kinds of display characters,
display colors, and SPRITE display. The following describes each
type of memory.
Fig. 8.11.20 Character Font Data Storing Address
(1) OSD ROM (addresses 10800
16
to 157FF
16
, 18000
16
to
1ACFF
16
)
The dot pattern data for OSD characters is stored in the charac-
ter font area in the OSD ROM and the CD font data for OSD
characters is stored in the color dot font area in the OSD ROM.
To specify the kinds of the character font and the CD font, it is
necessary to write the character code into the OSD RAM.
The modes are selected by bit 3 of the OSD control register 3 for
each screen.
The character font data storing address is shown in Figure 8.11.20.
The CD font data storing address is shown in Figure 8.11.21.
The 510 kinds of character font and 62 kinds of CD font can be
stored.
Character font
Line
number
02
16
03
16
04
16
05
16
06
16
07
16
08
16
09
16
0A
16
11
16
12
16
13
16
14
16
0B
16
0C
16
0D
16
0E
16
0F
16
10
16
15
16
Left area
Right area
b0
b7
b0
b7
OSD ROM address of character font data
AD16 AD15 AD14 AD13 AD12 AD11 AD10
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
OSD ROM
address bit
1
Line number
Area
bit
Line number /
Character code /
Area bit
Line number =
“
02
16
”
to
“
15
16
”
Character code =
“
00
16
”
to
“
1FF
16
”
(
“
0FF
16
”
and
“
100
16
”
can not be used. Write
“
FF
16
”
to corresponding addresses.)
Area bit = 0: Left area
1: Right area
Character code
0
相關(guān)PDF資料
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M37281MAH-XXXSP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
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參數(shù)描述
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M37281MKH-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
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